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INSTRUCTION MANUAL
HF/50 MHz
ALL MODE TRANSCEIVER
i756PRO™
This device complies with Part 15 of the FCC rules. Operation is sub-
ject to the following two conditions: (1) This device may not cause
harmful interference, and (2) this device must accept any interference
received, including interference that may cause undesired operation.
IC-756PROII.qxd 02.1.8 15:51 Page a
i
IMPORTANT
READ THIS INSTRUCTION MANUAL
CAREFULLY before attempting to operate the
transceiver.
SAVE THIS INSTRUCTION MANUAL. This
manual contains important safety and operating in-
structions for the IC-756PROII.
EXPLICIT DEFINITIONS
R WARNING HIGH VOLTAGE! NEVER at-
tach an antenna or internal antenna connector during
transmission. This may result in an electrical shock or
burn.
R NEVER apply AC to the [DC13.8V] jack on the
transceiver rear panel. This could cause a fire or ruin
the transceiver.
RNEVER apply more than 16 V DC, such as a 24 V
battery, to the [DC13.8V] jack on the transceiver rear
panel. This could cause a fire or ruin the transceiver.
RNEVER let metal, wire or other objects touch any
internal part or connectors on the rear panel of the
transceiver. This may result in an electric shock.
NEVER expose the transceiver to rain, snow or any
liquids.
AVOID using or placing the transceiver in areas with
temperatures below –10°C (+14°F) or above +50°C
(+122°F). Be aware that temperatures on a vehicle’s
dashboard can exceed 80°C (+176°F), resulting in per-
manent damage to the transceiver if left there for ex-
tended periods.
AVOID placing the transceiver in excessively dusty en-
vironments or in direct sunlight.
AVOID placing the transceiver against walls or putting
anything on top of the transceiver. This will obstruct
heat dissipation.
Place unit in a secure place to avoid inadvertent use
by children.
During mobile operation, DO NOT operate the trans-
ceiver without running the vehicle’s engine. When
transceiver power is ON and your vehicle’s engine is
OFF, the vehicle’s battery will soon become ex-
hausted.
Make sure the transceiver power is OFF before start-
ing the vehicle. This will avoid possible damage to the
transceiver by ignition voltage spikes.
During maritime mobile operation, keep the transceiver
and microphone as far away as possible from the mag-
netic navigation compass to prevent erroneous indica-
tions.
BE CAREFUL! The heatsink will become hot when op-
erating the transceiver continuously for long periods.
BE CAREFUL! If a linear amplifier is connected, set
the transceiver’s RF output power to less than the lin-
ear amplifier’s maximum input level, otherwise, the lin-
ear amplifier will be damaged.
Use Icom microphones only (supplied or optional).
Other manufacturer’s microphones have different pin
assignments, and connection to the IC-756PROII may
damage the transceiver.
PRECAUTIONS
Spurious may be received near the following frequencies.
These are made in the internal circuit and does not indicate a
transceiver malfunction:
6.144 MHz, 8.000 MHz,
12.288 MHz, 12.890 MHz (when spectrum scope is ON),
18.433 MHz, 24.573 MHz
WORD DEFINITION
RR
WARNING
Personal injury, fire hazard or electric
shock may occur.
CAUTION Equipment damage may occur.
NOTE
If disregarded, inconvenience only. No
risk or personal injury, fire or electric
shock.
Icom, Icom Inc. and the are registered trademarks of
Icom Incorporated (Japan) in the United States, the United
Kingdom, Germany, France, Spain, Russia and/or other
countries.
IC-756PROII.qxd 02.1.8 15:51 Page b
SUPPLIED ACCESSORIES
The transceiver comes with the following accessories.
Qty.
q DC power cable (OPC-025D) ............................ 1
w Hand microphone (HM-36) ................................ 1
e Spare fuses (FGB 30 A) .................................... 2
r Spare fuse (FGB 5 A) ........................................ 1
t CW keyer plug (AP-330) .................................... 1
1
1
TABLE OF CONTENTS
qwe
r
t
IMPORTANT ........................................ i
EXPLICIT DEFINITIONS ..................... i
PRECAUTIONS ................................... i
1 TABLE OF CONTENTS ................ 1
2 PANEL DESCRIPTION ........... 2 13
Front panel ..................................... 2
Microphone (HM-36) ...................... 9
LCD display .................................. 10
Screen menu arrangement ........... 11
Rear panel .................................... 12
3 INSTALLATION AND
CONNECTIONS ................... 14 20
Unpacking .................................... 14
Selecting a location ...................... 14
Grounding ..................................... 14
Antenna connection ...................... 14
Required connections ................... 15
Advanced connections ................. 16
Power supply connections ............ 17
Linear amplifier connections ......... 18
External antenna tuner
connections .................................. 19
Transverter jack information ......... 19
FSK and AFSK (SSTV)
connections .................................. 20
4 FREQUENCY SETTING ....... 21 24
When first applying power
(CPU resetting) ............................. 21
Initial settings ................................ 21
VFO description ............................ 22
Frequency setting with the
tuning dial ..................................... 23
Direct frequency entry with
the keypad .................................... 23
Advanced tuning functions ........... 24
5 RECEIVE AND TRANSMIT .. 25 50
Mode selection ............................. 25
Twin PBT operation ...................... 25
Notch function .............................. 26
Noise reduction ............................ 26
Noise blanker ............................... 27
DSP filter shape ............................ 27
RTTY filter/Twin peak filter ........... 28
CW reverse mode ........................ 28
RTTY reverse mode ..................... 28
CW pitch control ........................... 29
IF filter selection ........................... 29
AGC function ................................ 30
Dualwatch operation ..................... 31
Split frequency operation .............. 32
Quick split function ....................... 33
RIT and TX ................................ 34
Monitor function ............................ 35
VOX function ................................ 35
Meter function ............................... 36
SWR reading ................................ 36
Speech compressor ..................... 37
Preamp ......................................... 37
Digital voice recorder .................... 38
RTTY decoder .............................. 42
RTTY tuning meter ....................... 42
Electronic CW keyer ..................... 43
Memory keyer ............................... 44
Spectrum scope screen ................ 45
Automatic antenna selection ........ 46
Dial lock function .......................... 46
Repeater operation ....................... 47
Tone squelch operation ................ 48
Antenna tuner operation ............... 49
Optional external tuner
operation ...................................... 50
6 MEMORY OPERATION ........ 51 56
Memory channels ......................... 51
Memory channel selection ............ 51
Memory channel screen ............... 52
Memory channel programming ..... 53
Frequency transferring ................. 54
Memory names ............................. 55
Memory clearing ........................... 55
Memo pads ................................... 56
7 SCANS ................................. 57 61
Scan types .................................... 57
Preparation ................................... 57
Programmed scan operation ........ 58
F scan operation ........................ 58
Fine programmed scan/
fine F scan ................................. 59
Memory scan operation ................ 59
Select memory scan operation ..... 60
Setting select memory channels .. 60
Scan set mode ............................. 61
Tone scan ..................................... 61
8 CLOCK AND TIMERS .......... 62 63
Setting the current time ................ 62
Timer function activity.................... 62
Setting power-on time .................. 63
Setting power-off period ............... 63
Timer operation ............................ 63
9 SET MODE ........................... 64 73
Set mode description .................... 64
Level set mode ............................. 65
Display set mode .......................... 66
DSP filter set mode ....................... 67
Timer set mode ............................. 68
Miscellaneous (others) set mode .. 68
10 OPTION INSTALLATION ............ 74
Opening the transceiver’s case .... 74
UT-102
VOICE SYNTHESIZER UNIT
... 74
11 MAINTENANCE ................... 75 77
Troubleshooting ............................ 75
Fuse replacement ......................... 76
Clock backup battery
replacement .................................. 76
Tuning dial brake adjustment ....... 77
Frequency calibration
(approximate) ................................ 77
12 INTERNAL VIEWS ...................... 78
13 CONTROL COMMAND ......... 79– 82
Remote jack (CI-V) information .... 79
14 SPECIFICATIONS ....................... 83
15 OPTIONS ..................................... 84
16 ABOUT CE ................................... 85
IC-756PROII.qxd 02.1.8 15:51 Page 1
Front panel
q POWER SWITCH [POWER/TIMER]
Push momentarily to turn power ON.
Turn the optional DC power supply ON in advance.
A/D converter calibration of the DSP unit starts and it
takes approx. 10 sec.
Push momentarily to toggle the timer function ON
and OFF. (p. 63)
The power switch lights while the timer function is ON.
Push for 1 sec. to turn power OFF.
w TRANSMIT SWITCH [TRANSMIT]
Selects transmitting or receiving.
The [TX] indicator lights red while transmitting and the
[RX] indicator lights green when the squelch is open.
e HEADPHONE JACK [PHONES]
Accepts headphones.
Output power: 5 mW with an 8 load.
When headphones are connected, the internal speaker
or connected external speaker does not function.
r ELECTRONIC KEYER JACK [ELEC-KEY] (p. 43)
Accepts a paddle to activate the internal electronic
keyer for CW operation.
Selection between the internal electronic keyer, bug-key
and straight key operation can be made in keyer set
mode. (p. 43)
A straight key jack is separately available on the rear
panel. See [KEY] on p. 12.
Keyer polarity (dot and dash) can be reversed in keyer
set mode. (p. 43)
4-channel memory keyer is available for your conve-
nience. (p. 44)
t MICROPHONE CONNECTOR [MIC]
Accepts the supplied or optional microphone.
See p. 84 for appropriate microphones.
See p. 9 for microphone connector information.
y AF CONTROL [AF] (inner control)
Varies the audio output level from the speaker.
u MIC GAIN CONTROL [MIC GAIN]
Adjusts microphone input gain.
The transmit audio tone in SSB mode can be adjusted in
set mode. (p. 65)
How to set the microphone gain.
Set the [MIC] control so that the ALC meter sometimes
swings during normal voice transmission in SSB mode.
MIC GAIN
Recommended level for
an Icom microphone
IncreasesDecreases
AF RF/SQL
No audio output
Max. audio output
Decreases Increases
(dot)
(com)
(dash)
2
2
PANEL DESCRIPTION
TIMER
POWER
TRANSMIT
PHONES
ELEC-KEY
MIC
TUNER MONITOR NB NR
AF BAL NRRF/SQL
MIC GAIN RF POWER COMP BK-IN DELAY KEY SPEED
F-1 F-2 F-3 F-4 F-5
HF/50MHz TRANSCEIVER
i756PRO™
SSB
CW/RTTY
AM/FM FILTER EXIT/SET
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IC-756PROII.qxd 02.1.8 15:51 Page 2
2
3
PANEL DESCRIPTION
i RF GAIN CONTROL/SQUELCH CONTROL
[RF/SQL] (outer control)
Adjusts the RF gain and squelch threshold level.
The squelch removes noise output from the
speaker (closed condition) when no signal is re-
ceived.
The squelch is particularly effective for FM. It is also
available for other modes.
12 to 1 oclock position is recommended for any setting
of the [RF/SQL] control.
The control can be set as Auto (RF gain control in SSB,
CW and RTTY; squelch control in AM and FM) or
squelch control (RF gain is fixed at maximum) in set
mode as follows. (p. 69)
When setting as RF gain/squelch control
While rotating the RF gain control, noise may be
heard. This comes from the DSP unit and does not
indicate an equipment malfunction.
o RF POWER CONTROL [RF POWER]
Continuously varies the RF output power from min-
imum (5 W*) to maximum (100 W*)
.
* AM mode: 5 W to 40 W
!0 BALANCE CONTROL [BAL] (inner control; p. 31)
Adjusts the audio output balance between main and
sub readout frequencies while in dualwatch.
!1 NOISE REDUCTION LEVEL CONTROL [NR]
(outer control; p. 26)
Adjusts the noise reduction level when the noise re-
duction is in use. Set for maximum readability.
!2 NOISE REDUCTION SWITCH [NR] (p. 26)
Switches the noise reduction ON and OFF.
!3 NOISE BLANKER SWITCH [NB] (p. 27)
Switches the noise blanker ON and OFF when
pushed. The noise blanker reduces pulse-type
noise such as that generated by automobile igni-
tion systems. This function cannot be used for
FM, or non-pulse-type noise.
Enters the noise blanker level set mode when
pushed for 1 sec.
!4 S/RF METER (p. 36)
Shows the signal strength while receiving. Shows
the relative output power, SWR, ALC or compres-
sion levels while transmitting.
!5 MONITOR SWITCH [MONITOR] (p. 35)
Monitors your transmitted IF signal.
The CW sidetone functions when [MONITOR] is OFF in
CW mode.
!6 ANTENNA TUNER SWITCH [TUNER] (p. 49)
Turns the antenna tuner ON and OFF (bypass)
when pushed momentarily.
Starts to tune the antenna manually when
pushed for 1 sec.
When the tuner cannot tune the antenna, the tuning
circuit is bypassed automatically after 20 sec.
Noise blanker OFF Noise blanker ON
NB NB
Noise reduction OFF Noise reduction ON
NR NR
BAL NR
Decreases
OFF
Increases
BAL NR
Increases main
readout gain
Increases sub
readout gain
RF POWER
IncreasesDecreases
MODE
SSB, CW
RTTY
AM, FM
AUTO
RF GAIN
SQL
SQL
SET MODE SETTING
SQL
SQL
RF GAIN + SQL
RF GAIN + SQL
RF GAIN + SQL
Recommended level
Minimum RF gain
Adjustable
range
RF gain
adjustable
range
Maximum
RF gain
Maximum
RF gain
Squelch is
open.
S-meter
squelch
S-meter squelch
threshold
Noise squelch
threshold
(FM mode)
Shallow Deep
S-meter
squelch
Noise squelch (FM mode)
Noise squelch (FM mode)
Squelch is
open.
When functioning as RF gain control
(Squelch is xed open; SSB, CW, RTTY only)
When functioning as squelch control
(RF gain is xed at maximum.)
IC-756PROII.qxd 02.1.8 15:51 Page 3
4
2
PANEL DESCRIPTION
Front panel (continued)
!7
COMPRESSION LEVEL CONTROL [COMP] (p. 37)
Adjusts the speech compression level in SSB.
!8
SEMI BREAK-IN DELAY CONTROL [BK-IN DELAY]
Adjusts the transmit-to-receive switching delay time
for CW semi break-in operation.
!9 ELECTRONIC CW KEYER SPEED CONTROL
[KEY SPEED] (p. 43)
Adjusts the internal electronic CW keyers speed.
6 wpm (min.) to 60 wpm (max.) can be set.
@0 MODE SWITCHES
Selects the desired mode. (p. 25)
Announces the selected mode when an optional UT-102
is installed. (pgs. 71, 74)
Selects USB and LSB mode alternately.
Selects SSB data mode
(USB-D, LSB-D)
when pushed for 1 sec. in SSB mode.
Selects CW and RTTY mode alternately.
Switches CW and CW-R (CW reverse)
mode when pushed for 1 sec. in CW
mode.
Switches RTTY and RTTY-R (RTTY re-
verse)
mode when pushed for 1 sec. in
RTTY mode.
Selects AM and FM mode alternately.
Selects AM/FM data mode (AM-D, FM-D)
when pushed for 1 sec. AM/FM mode.
@1 LCD FUNCTION SWITCHES [F-1][F-5]
Push to select the function indicated in the LCD dis-
play above these switches.
Functions vary depending on the operating condition.
@2 FILTER SWITCH [FILTER] (p. 29)
Selects one of 3 IF lter settings.
Enters the lter set mode when pushed for 1 sec.
@3 EXIT/SET SWITCH [EXIT/SET]
Exits from a set mode, etc. when pushed.
Selects the set mode screen when pushed for
1 sec. (p. 64)
@4 REC/PLAY SWITCH [REC/PLAY] (p. 38)
Play back the recorded audio in the channel R4
of the voice memory when pushed.
Records the receiving signal contents into the
channel R4 (max. 15 sec.) of the voice memory
when pushed for 1 sec.
@5 TUNING DIAL (p. 23)
Changes the displayed frequency, selects set mode
items, etc.
@6 MAIN/SUB SWITCH [MAIN/SUB]
Selects access to the main or sub readout.
The sub readout frequency is displayed in outline or
mesh font. The sub readout functions only during split
operation or dualwatch.
@7 VFO/MEMORY SWITCH [VFO/MEMO]
Switches the selected readout operating mode
between the VFO mode and memory mode when
pushed. (pgs. 22, 51)
AM/FM
CW/RTTY
SSB
Slow Fast
KEY SPEED
BK-IN DELAY
Short delay for
high speed keying
(2 dot)
Long delay for
slow speed keying
(13 dot)
COMP
Compression
level decreases
Compression
level increases
NB NR
BAL NR
COMP BK-IN DELAY KEY SPEED
LOCKTX
RX
TWIN PBT
CW PITCH
F-1 F-2 F-3 F-4 F-5
REC/PLAY
LOCK/SPEECH
RIT/ TX
TXRIT CLEAR
SPLIT
MP-W MP-R
DUAL
WATCH
VFO/
MEMO
MAIN/
SUB
CHANGE
1.8 3.5 7
10 14 18
21 24 28
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AM/FM FILTER EXIT/SET
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IC-756PROII.qxd 02.1.8 15:51 Page 4
5
2
PANEL DESCRIPTION
Transfers the memory contents to VFO when
pushed for 1 sec. (p. 54)
@8 MAIN/SUB CHANGE SWITCH [CHANGE]
Switches the frequency and selected memory
channel between main and sub readouts when
pushed.
Switches between transmit frequency and receive fre-
quency when the split frequency function is ON.
(p. 32)
Equalizes the sub readout frequency to the main
readout frequency when pushed for 1 sec.
@9 MULTI-FUNCTION SWITCHES
Push to select the functions indicated in the LCD
display to the right of these switches.
Functions vary depending on the operating condition.
Switches the antenna connector selec-
tion between ANT1 and ANT2 when
pushed. (p. 46)
Switches the [RX ANT]
(receive antenna)
ON and OFF when pushed for 1 sec.
When the receive antenna is activated, the
antenna which is connected to the [ANT1] or
[ANT2] is used for transmit only.
When a transverter is in use, this [ANT]
does not function and XVERT appears.
Selects RF power (Po), SWR, ALC or
COMP metering during transmit. (p. 36)
Switches the multi-function digital meter
ON and OFF when pushed for 1 sec.
Selects one of 2 receive RF preamps or
bypasses them. (p. 37)
•“P. AMP1 activates 10 dB preamp.
•“P. AMP2 activates 16 dB high-gain preamp.
What is the preamp?
The preamp amplies received signals in the front end cir-
cuit to improve the S/N ratio and sensitivity. Select P. AMP1
or P. AMP2 when receiving weak signals.
Selects 6 dB, 12 dB or 18 dB attenuator,
or bypasses them.
What is the attenuator?
The attenuator prevents a desired signal from distorting
when very strong signals are near the desired frequency, or
when very strong electric elds, such as from a broadcast-
ing station, are near your location.
Activates or selects fast, middle or slow
AGC time constant when pushed. (p. 30)
•“FAST is only available for FM mode.
Enters the AGC set mode when pushed
for 1 sec. (p. 30)
AGC time constant can be set between 0.1 to
8.0 sec.
(depends on mode), or turned OFF. While
OFF is selected, the S-meter does not function.
What is the AGC?
The AGC controls receiver gain to produce a constant audio
output level, even when the received signal strength is varied
by fading, etc. Select FAST for tuning and select MID or
SLOW depending on the receiving condition.
Turns the VOX function ON and OFF
when pushed in non-CW modes. (p. 35)
Enters the VOX set mode when pushed
for 1 sec. in non-CW modes. (p. 35)
What is the VOX function?
The VOX function (voice operated transmission) starts trans-
mission without pushing the transmit switch or PTT switch
when you speak into the microphone; then, automatically re-
turns to receive when you stop speaking.
Selects semi break-in, full break-in oper-
ation, or turns the break-in operation
OFF when pushed in CW mode.
What is the break-in function?
The break-in function switches transmit and receive with CW
keying. Full break-in (QSK) can monitor the receive signal
during keying.
Turns the RTTY filter ON and OFF in
RTTY mode. (p. 28)
When the RTTY filter is turned ON, [TWIN
PBT] functions as the IF shift control.
Enters the RTTY filter set mode when
pushed for 1 sec. in RTTY mode. (p. 28)
What is the IF shift?
The IF shift function electronically changes the center of the
IF (Intermediate Frequency) passband frequency to reject in-
terference. Only the inner control of [TWIN PBT] can be used
for the IF shift control.
Turns the speech compressor ON and
OFF in SSB mode. (p. 37)
Switches the narrow, middle or wide
transmit lter when pushed for 1 sec.
What is the speech compressor?
The speech compressor compresses the transmitter audio
input to increase the average audio output level. Therefore,
talk power is increased. This function is effective for long dis-
tance communication or when propagation conditions are poor.
Turns the
1
4 function ON and OFF in
SSB data, CW and RTTY modes. (p. 24)
1
4 function sets dial rotation to
1
4 of normal
for ne tuning.
Switches the tone encoder, tone squelch
function and no tone operation when
pushed in FM mode. (pgs. 47, 48)
Enters the tone set mode when pushed
for 1 sec. in FM mode. (pgs. 47, 48)
BK-INBK-IN
OFFOFF
VOXVOX
OFFOFF
AGCAGC
MIDMID
ATTATT
OFFOFF
P.AMPP.AMP
OFFOFF
METERMETER
PoPo
ANTANT
1
RTTYRTTY
FILFIL
OFFOFF
COMPCOMP
OFFOFF
WIDEWIDE
1/41/4
OFFOFF
TONETONE
IC-756PROII.qxd 02.1.8 15:51 Page 5
Front panel (continued)
#0
LOCK/SPEECH SWITCH [LOCK/SPEECH]
Push momentarily to toggle the dial lock function
ON and OFF. (p. 46)
Pushing for 1 sec. announces the S-meter indi-
cation and the selected readout frequency when
an optional UT-102 is installed. (p. 74)
#1 RIT/
TX CONTROL [RIT/
TX] (p. 34)
Shifts the receive and/or transmit frequency without
changing the transmit and/or receive frequency
while the RIT and/or TX functions are ON.
Rotate the control clockwise to increase the frequency,
or rotate the control counterclockwise to decrease the
frequency.
The shift frequency range is ±9.999 kHz in 1 Hz steps
(or ±9.99 kHz in 10 Hz steps).
#2 RIT SWITCH [RIT] (p. 34)
Turns the RIT function ON and OFF when pushed.
Use the [RIT/TX] control to vary the RIT frequency.
Adds the RIT shift frequency to the operating fre-
quency when pushed for 1 sec.
What is the RIT function?
The RIT (Receiver Incremental Tuning) shifts the receive fre-
quency without shifting the transmit frequency.
This is useful for ne tuning stations calling you on an off-fre-
quency or when you prefer to listen to slightly different-
sounding voice characteristics, etc.
#3
TX SWITCH [
TX] (p. 34)
Turns the TX function ON and OFF when
pushed.
Use the [RIT/TX] control to vary the TX frequency.
Adds the TX shift frequency to the operating
frequency when pushed for 1 sec.
What is the
TX function?
The TX shifts the transmit frequency without shifting the re-
ceive frequency. This is useful for simple split frequency op-
eration in CW, etc.
#4 CLEAR SWITCH [CLEAR] (p. 34)
Clears the RIT/TX shift frequency when pushed
for 1 sec. or when pushed momentarily, depending
on the quick RIT/TX clear function setting (p. 72).
#5 CW PITCH CONTROL [CW PITCH]
(outer control; p. 29)
Shifts the received CW audio pitch and monitored
CW audio pitch without changing the operating fre-
quency.
#6 MANUAL NOTCH FILTER CONTROL [NOTCH]
(inner control; p. 26)
Varies the peak frequency of the manual notch l-
ter to pick out a receive signal from interference
while the manual notch function is ON.
Notch lter center frequency:
SSB : 0 Hz to 5100 Hz
CW : 900 Hz + CW pitch freq. to 4200 Hz + CW
pitch freq.
AM : 5100 Hz to 5100 Hz
NOTCH
CW PITCH
Lower frequency Higher frequency
Approx. 300 Hz
Approx. 900 Hz
Lower frequency Higher frequency
NOTCH
CW PITCH
RIT/TX
Low shift High shift
6
2
PANEL DESCRIPTION
NB NR
BAL NR
COMP BK-IN DELAY KEY SPEED
LOCKTX
RX
TWIN PBT
CW PITCH
F-1 F-2 F-3 F-4 F-5
REC/PLAY
LOCK/SPEECH
RIT/ TX
TXRIT CLEAR
SPLIT
MP-W MP-R
DUAL
WATCH
VFO/
MEMO
MAIN/
SUB
CHANGE
1.8
1
3.5
2
7
3
10
4
14
5
18
6
21
7
24
8
28
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#9
#4
#6
#5
#3
#8
#7
#2
#1
#0
$2$3$4
IC-756PROII.qxd 02.1.8 15:51 Page 6
7
2
PANEL DESCRIPTION
#7 PBT CLEAR SWITCH [PBT CLR] (p. 25)
Clears the PBT settings when pushed for 1 sec.
The [PBT CLR] indicator lights when PBT is in use.
#8 NOTCH SWITCH [NOTCH] (p. 26)
Switches the notch function between auto, man-
ual and OFF in SSB and AM modes.
Turns the manual notch function ON and OFF
when pushed in CW mode.
Turns the auto notch function ON and OFF when
pushed in FM mode.
•“AN appears when auto notch is in use.
•“MN appears when manual notch is in use.
What is the notch function?
The notch function eliminates unwanted CW or AM carrier
tones while preserving the desired signals audio response.
The ltering frequency is adjusted to effectively eliminate un-
wanted tones via the DSP circuit.
#9 PASSBAND TUNING CONTROLS [TWIN PBT]
Adjust the receivers passband width of the DSP
lter. (p. 25)
Passband width and shift frequency are displayed in the
LCD.
Push [PBT CLR] for 1 sec. to clear the settings when not
in use.
Variable range is set to half of the IF filter passband
width. 25 Hz steps and 50 Hz steps are available.
These controls function as an IF shift control while in AM
mode and when the RTTY lter is turned ON. Only the
inner control may function in this case.
What is the PBT control?
General PBT function electronically narrows the IF passband
width to reject interference. This transceiver uses the DSP
circuit for the PBT function.
$0 LOCK INDICATOR [LOCK] (p. 46)
Lights when the dial lock function is activated.
$1 MEMO PAD-READ SWITCH [MP-R] (p. 56)
Each push calls up a frequency and operating
mode in a memo pad. The 5 (or 10) most recently
programmed frequencies and operating modes can
be recalled, starting from the most recent.
The memo pad capacity can be expanded from 5 to 10
in set mode for your convenience. (p. 71)
$2 KEYPAD
Pushing a key selects the operating band.
[GENE] selects the general coverage band.
Pushing the same key 2 or 3 times calls up other
stacked frequencies in the band. (p. 23)
Icoms triple band stacking register memorizes 3 fre-
quencies in each band.
After pushing [F-INP], enters a keyed frequency
or memory channel. Pushing [(F-INP)ENT] or
[Y]/[Z] is necessary at the end. (pgs. 23, 51)
e.g. to enter 14.195 MHz, push [F-INP] [1] [4] [] [1]
[9] [5] [(F-INP)ENT].
$3 DUALWATCH SWITCH [DUALWATCH] (p. 31)
Turns the dualwatch function ON and OFF when
pushed.
Turns the dualwatch function ON and equalizes
the sub readout frequency to the main readout
when pushed for 1 sec. (Quick dualwatch function)
The quick dualwatch function can be turned OFF
using set mode. (p. 69)
$4 SPLIT SWITCH [SPLIT] (p. 32)
Turns the split function ON and OFF when
pushed.
Turns the split function ON, equalizes the sub
readout frequency to the main readout and sets
the sub readout for frequency input when pushed
for 1 sec. in non-FM modes. (Quick split function)
The offset frequency is shifted from the main readout
frequency in FM mode. (pgs. 47, 69)
The quick split function can be turned OFF using set
mode. (p. 69)
Turns the split function ON and shifts the sub
readout frequency after inputting an offset
4 MHz in 1 kHz steps).
$5 MEMO PAD-WRITE SWITCH [MP-W] (p. 56)
Programs the selected readout frequency and op-
erating mode into a memo pad.
The 5 most recent entries remain in memo pads.
The transmit frequency is programmed when pushed to-
gether with [XFC].
The memo pad capacity can be expanded from 5 to 10
in set mode for your convenience. (p. 71)
$6 RECEIVE INDICATOR [RX]
Lights green while receiving a signal and when the
squelch is open.
$7 TRANSMIT INDICATOR [TX]
Lights red while transmitting.
PBT1
PBT2
TWIN PBT
Low cut High cutCenter
TWIN PBT TWIN PBT TWIN PBT
+
NOTCHNOTCH
Notch OFF Notch ON
IC-756PROII.qxd 02.1.8 15:51 Page 7
8
2
PANEL DESCRIPTION
Front panel (continued)
$8 LCD FUNCTION DISPLAY (See p. 10 for details.)
Shows the operating frequency, function switch
menus, spectrum screen, memory channel screen,
set mode settings, etc.
$9 MEMORY UP/DOWN SWITCHES [
YY
]/[
ZZ
] (p. 51)
Select the memory channel number for the se-
lected readout.
Memory channels can be selected both in VFO and
memory modes.
Select the desired memory channel directly after
pushing [F-INP] and a memory channel number.
%0 MEMORY WRITE SWITCH [MW] (p. 53)
Stores the selected readout frequency and operat-
ing mode into the displayed memory channel when
pushed for 1 sec.
This function is available both in VFO and memory
modes.
%1 MEMORY CLEAR SWITCH [M-CL] (p. 55)
Clears the selected readout memory channel con-
tents when pushed for 1 sec. in memory mode.
The channel becomes a blank channel.
This switch does not function in VFO mode.
%2 QUICK TUNING SWITCH [TS] (p. 24)
Turns the quick tuning step ON and OFF.
While the quick tuning indicator is displayed, the fre-
quency can be changed in programmed kHz steps.
0.1, 1, 5, 9, 10, 12.5, 20 and 25 kHz quick tuning
steps are available.
While the quick tuning step is OFF, turns the 1 Hz
step ON and OFF when pushed for 1 sec.
1 Hz indications appear in both readouts and the fre-
quency can be changed in 1 Hz steps.
While the quick tuning step is ON, enters the
quick tuning step set mode when pushed for
1 sec.
%3 TRANSMIT FREQUENCY CHECK SWITCH
[XFC]
Monitors the transmit frequency when pushed and
held when the split frequency function is ON.
While pushing this switch, the transmit frequency can be
changed with the tuning dial, keypad, memo pad or the
[Y]/[Z] switches.
When the split lock function is turned ON, pushing [XFC]
cancels the dial lock function. (p. 69)
BWBW
2.4k2.4k
SFTSFT
0
FIL2FIL2
qw:pp
TXTX
CWCW
qr.qpp.pp
21.076.5021.076.50
VFOVFO
USBUSB
1
METER
Po
ANT
1
Quick tuning indicator
NB NR
BAL NR
COMP BK-IN DELAY KEY SPEED
LOCKTX
RX
TWIN PBT
CW PITCH
F-1 F-2 F-3 F-4 F-5
REC/PLAY
LOCK/SPEECH
RIT/ TX
TXRIT CLEAR
SPLIT
MP-W MP-R
DUAL
WATCH
VFO/
MEMO
MAIN/
SUB
CHANGE
1.8
1
3.5
2
7
3
10
4
14
5
18
6
21
7
24
8
28
9
GENE
50
0
F-INP
ENT
Y
Z
MW
M-CL
TS
XFC
EIVER
756PRO™
PBT CLR NOTCH
NOTCH
SSB
CW/RTTY
AM/FM FILTER EXIT/SET
$9 %0 %1 %2 %3
$8
IC-756PROII.qxd 02.1.8 15:51 Page 8
9
2
PANEL DESCRIPTION
MICROPHONE CONNECTOR
(Front panel view)
HM-36 SCHEMATIC DIAGRAM
CAUTION:
DO NOT short pin 2 to ground as this
can damage the internal 8 V regulator.
NOTE: DC voltage is applied to pin 1 for micro-
phone operation. Take care when using a non-Icom
microphone.
y GND (PTT ground)
t PTT
r Main readout squelch switch
q Microphone input
w +8 V DC output
e Frequency up/down
u GND
(Microphone ground)
i Main readout AF output
(varies with [AF]/[BAL])
Microphone (HM-36)
q UP/DOWN SWITCHES [UP]/[DN]
Change the selected readout frequency or memory
channel.
Continuous pushing changes the frequency or memory
channel number continuously.
While pushing [XFC], the transmit readout frequency can
be controlled while in spilt frequency operation.
The [UP]/[DN] switch can simulate a key paddle. Preset
in the keyer set mode. (p. 43)
w PTT SWITCH
Push and hold to transmit; release to receive.
q
w
+
+
q
w
e
r
t
y
u
i
4700p
4700p
10µ
0.33µ
MICROPHONE
MIC
ELEMENT
2k
470
DOWN UP
PTT
RECEIVE
TRANSMIT
MICROPHONE CABLE MICROPHONE PLUG
[MIC]
FUNCTION DESCRIPTION
Pin No.
w +8 V DC output Max. 10 mA
e
Frequency up Ground
Frequency down Ground through 470
r
Squelch open Low level
Squelch closed High level
IC-756PROII.qxd 02.1.8 15:51 Page 9
10
2
PANEL DESCRIPTION
LCD display
q TX INDICATOR
Indicates the frequency readout for transmit.
w VFO/MEMORY CHANNEL INDICATOR
(pgs. 22, 51)
Indicates the VFO mode or selected memory chan-
nel number.
e SELECT MEMORY CHANNEL INDICATOR (p. 60)
Indicates the displayed memory channel is set as a
select memory channel.
r MULTI-FUNCTION SWITCH GUIDE
Indicates the function of the multi-function switches.
t LCD FUNCTION SWITCH GUIDE
Indicates the function of the LCD function switches
([F-1] [F-5]).
y MULTI-FUNCTION SCREEN (p. 11)
Shows the screens for the multi-function digital
meter, spectrum scope, voice recorder, memory
channel, scan, memory keyer, RTTY decoder, IF l-
ter selection or set modes, etc.
u MEMORY CHANNEL READOUTS (p. 51)
Show the selected memory channel contents in
VFO mode.
Show the VFO contents in memory mode.
i FREQUENCY READOUTS (p. 23)
Show the operating frequency.
Outline characters are used for non-accessing readout.
o CLOCK READOUT (p. 62)
Shows the current time.
!0 RTTY TUNING INDICATOR (p. 42)
Shows the tuning level in RTTY mode.
!1 QUICK TUNING INDICATOR (p. 24)
Appears when the quick tuning step function is in
use.
!2 PASSBAND WIDTH INDICATOR (p. 25)
Graphically displays the passband width for twin
PBT operation and center frequency for IF shift op-
eration.
!3 IF FILTER INDICATOR (p. 29)
Shows the selected IF lter number.
!4 SHIFT FREQUENCY INDICATOR (p. 25)
Shows the shift frequency of the IF lter.
!5 MODE INDICATOR (p. 25)
Shows the selected mode.
!6 BAND WIDTH INDICATOR (p. 29)
Shows the passband width of the IF lter.
ANT
1
COMP
OFF
WIDE
HOLD
SUB
MARKER
ATT
10dB
Grid
10k
10dB
SPAN
ATT
MARKER
HOLD
SET
METER
Po
P.AMP
1
AGC
MID
ATT
OFF
VOX
OFF
+12.5k+12.5k
-12.5k-12.5k
SPECTRUM SCOPESPECTRUM SCOPE
BW
2.4k
SFT
0
USB
qw:pp
VFO 21.085.00
TX
CW
FIL2
qr.qqy.pp
qr.qpp.pp
56ß
USB
21.085.00 CW
VFO
FIL2
t
i
i
!6 !4!5 !2!3 !1 !0 o
y
u
u
r
q
w
e
w
IC-756PROII.qxd 02.1.8 15:51 Page 10
11
2
PANEL DESCRIPTION
ATT
0FF
METER
Po
P.AMP
1
BK-IN
OFF
1/4
OFF
BW
2.4k
SFT
0
VFO
FIL2
CW
qw:pp
AGC
MID
1
TX
VFO
1
USB
CW
CW
FIL2
qr.qpp.pp
qr.qpp.pp
--. ---. --
--. ---. --
SCOPE
VOICE KEYER
MEMORY
SCAN
ANT
1
BK-INBK-IN
OFFOFF
1/41/4
OFFOFF
AGCAGC
MIDMID
CQ TEST CQ TEST DE ICOM ICOMCQ TEST CQ TEST DE ICOM ICOM
TEST
QRZ?
CFM TU
UR 5NN001 BK
M1
M2
M3
M4
M1
M2
M3
M4
-1
BK-IN
OFF
1/4
OFF
AGC
MID
T4 -
-
-
T1
-
-
-
T3
-
-
-
VOICE RECORDER
T2
-
-
-
TX MEMORY
T1
T2
T3
T4
T/R
BK-INBK-IN
OFFOFF
1/41/4
OFFOFF
AGCAGC
MIDMID
GridGrid
2.5k2.5k
10dB10dB
+12. 5k+12. 5k
-12. 5k-12. 5k
SPECTRUM SCOPESPECTRUM SCOPE
SPANSPAN
ATTATT
MARKERMARKER
HOLDHOLD
SET
BK-INBK-IN
OFFOFF
1/41/4
OFFOFF
AGCAGC
MIDMID
SCANSCAN
F SpanSpan : ± 10kHz 10kHz
ProgrammedProgrammed P1:P1: 0.500.00MHz0.500.00MHz
scan edgesscan edges P2:P2: 29.999.99MHz29.999.99MHz
PROGPROG
F
FINEFINE
F SPANF SPAN
SETSET
BK-INBK-IN
OFFOFF
1/41/4
OFFOFF
AGCAGC
MIDMID
SCANSCAN
F
SpanSpan : ± 10kHz 10kHz
ProgrammedProgrammed P1:P1: 0.500.00MHz0.500.00MHz
scan edgesscan edges P2:P2: 29.999.99MHz29.999.99MHz
MEMOMEMO
F
SELECTSELECT
F SPANF SPAN
SETSET
THRESHOLD 9
RTTYRTTY
FILFIL
ONON
AGCAGC
MIDMID
RTTY DECODERTTY DECODE
MEMORY KEYERMEMORY KEYER
**** RTTY Decode Monitor ******** RTTY Decode Monitor ****
45bps BAUDOT Mark=2125,Shift=170 45bps BAUDOT Mark=2125,Shift=170
UnShift On Space support (SET-OTHERS) UnShift On Space support (SET-OTHERS)
New Line Code selectable (SET-OTHERS) New Line Code selectable (SET-OTHERS)
If RTTY-FIL is OFF, Please turn ON. If RTTY-FIL is OFF, Please turn ON.
1/41/4
OFFOFF
HOLDHOLD
CLRCLR
ADJADJ
WIDEWIDE
BK-INBK-IN
OFFOFF
1/41/4
OFFOFF
AGCAGC
MIDMID
MEMORYMEMORY
9999
--.---.----.---.-- ------------ ------
PP 11 00 0.500.000.500.00 USBUSB FL2 SCAN EDGEFL2 SCAN EDGE
P2P2 29.999.9929.999.99 USBUSB FL2 SCAN EDGEFL2 SCAN EDGE
1 1 --.---.----.---.-- ------------ ------
2 2 --.---.----.---.-- ------------ ------
33 --.---.----.---.-- ------------ ------
4 4 --.---.----.---.-- ------------ ------
ROLLROLL
SETSET
SELECTSELECT
NAMENAME
WIDEWIDE
Start up screen
Voice recorder screen (p. 38)
Memory keyer screen (CW mode: p. 43)
Spectrum scope screen (p. 45)
Memory channel screen (p. 52)
Programmed scan screen (VFO mode: p. 58)
RTTY decoder screen (RTTY mode: p. 42)
Memory scan screen (Memory mode: p. 59)
F-1
F-1
F-4F-2
F-5
F-3
F-5
F-3
F-2 F-3 F-4 F-5
Screen menu arrangement
The following screens can be selected from the start
up screen. Choose the desired screen using the fol-
lowing chart.
Pushing [EXIT/SET] several times returns to the start
up screen. See p. 64 for set mode arrangement.
IC-756PROII.qxd 02.1.8 15:51 Page 11
12
2
PANEL DESCRIPTION
Rear panel
q TRANSVERTER JACK [XVERT] (p. 19)
External transverter input/output jack. Activated by
voltage applied to [ACC(2)] pin 6.
w RECEIVE ANTENNA CONNECTOR [RX ANT]
(p. 16)
Connects a 50 general coverage antenna with an
RCA connector.
e TUNER CONTROL SOCKET [TUNER] (p. 16)
Accepts the control cable from an optional AH-4
HF/50 MHz AUTOMATIC ANTENNA TUNER or AH-3 HF
AUTOMATIC ANTENNA TUNER
.
r ACCESSORY SOCKET 1 [ACC(1)]
t ACCESSORY SOCKET 2 [ACC(2)]
Enable connection of external equipment such as a
linear amplifier, an automatic antenna selector/
tuner, TNC for data communications, etc.
See p.13 for socket information.
y STRAIGHT KEY JACK [KEY] (p. 15)
Accepts a straight key or external electronic keyer
with
1
4 inch standard plug.
[ELEC-KEY] on the front panel can be used for a straight
key or external electronic keyer. Deactivate the internal
electronic keyer in keyer set mode. (p. 43)
If you use an external electronic keyer, make
sure the voltage retained by the keyer is less
than 0.4 V when the key is ON.
u CI-V REMOTE CONTROL JACK [REMOTE]
(p. 16)
Designed for use with a personal computer for re-
mote control of transceiver functions.
Used for transceive operation with another Icom
CI-V transceiver or receiver.
i EXTERNAL SPEAKER JACK [EXT SP]
(pgs. 16, 84)
Accepts an 48 speaker.
o ALC INPUT JACK [ALC] (p. 18)
Connects to the ALC output jack of a non-Icom lin-
ear amplier.
!0 SEND CONTROL JACK [SEND] (p. 18)
Goes to ground while transmitting to control exter-
nal equipment such as a linear amplier.
Max. control level: 16 V DC/0.5 A
!1 DC POWER SOCKET [DC 13.8V] (p. 15)
Accepts 13.8 V DC through the supplied DC power
cable (OPC-025D).
Rear panel view
(+)
(_)
q w!0
!1
ertyuio
!4 !3 !2
IC-756PROII.qxd 02.1.8 15:51 Page 12
13
2
PANEL DESCRIPTION
!2 ANTENNA CONNECTOR 1 [ANT1]
!3 ANTENNA CONNECTOR 2 [ANT2] (pgs. 14, 15)
Accept a 50 antenna with a PL-259 connector.
When using an optional AH-4 HF/50 MHz AUTO-
MATIC ANTENNA TUNER
or AH-3
HF AUTOMATIC AN-
TENNA TUNER
, connect it to the [ANT1] connector.
The internal antenna tuner activates for [ANT2] and
deactivates for [ANT1] when connecting the AH-4 or
AH-3.
DACC SOCKETS
!4 GROUND TERMINAL [GND] (pgs. 14, 15)
Connect this terminal to a ground to prevent electri-
cal shocks, TVI, BCI and other problems.
If the CW side tone level limit or beep level limit is in
use, the CW side tone or beep tone decreases from
the xed level when the [AF] control is rotated above
a specied level, respectively. (p. 65)
ACC (1)
PIN No.
NAME DESCRIPTION SPECIFICATIONS
1
2
3
4
5
6
7
8
High level : More than 2.4 V
1 RTTY Controls RTTY keying Low level : Less than 0.6 V
Output current : Less than 2 mA
2 GND Connects to ground. Connected in parallel with ACC(2) pin 2.
Input/output pin.
Ground level : 0.5 V to 0.8 V
3 SEND Goes to ground when transmitting.
Output current : Less than 20 mA
When grounded, transmits.
Input current (Tx) : Less than 200 mA
Connected in parallel with ACC(2) pin 3.
4 MOD
Modulator input. Input impedance : 10 k
Connects to a modulator. Input level : Approx. 100 mV rms
AF detector output.
Output impedance : 4.7 k
5 AF Fixed, regardless of [AF] position
Output level : 100300 mV rms
in default settings. (see notes below)
6 SQLS
Squelch output. SQL open : Less than 0.3 V/5 mA
Goes to ground when squelch opens.
SQL closed : More than 6.0 V/100 µA
7 13.8 V 13.8 V output when power is ON.
Output current : Max. 1 A
Connected in parallel with ACC(2) pin 7.
Control voltage : 4 V to 0 V
8 ALC ALC voltage input. Input impedance : More than 10 k
Connected in parallel with ACC(2) pin 5.
ACC
PIN No.
NAME DESCRIPTION SPECIFICATIONS
1
2
3
4
5
6
7
1 8 V Regulated 8 V output.
Output voltage : 8 V ±0.3 V
Output current : Less than 10 mA
2 GND Same as ACC(1) pin 2.
3 SEND Same as ACC(1) pin 3.
4 BAND
Band voltage output.
Output voltage : 0 to 8.0 V
(Varies with amateur band)
5 ALC Same as ACC (1) pin 8.
6TRV
Activates [XVERT] input/output Input impedance : More than 10 k
when HIGH voltage is applied. Input voltage : 2 to 13.8 V
7
13.8 V
Same as ACC(1) pin 7.
Rear panel view
Rear panel view
IC-756PROII.qxd 02.1.8 15:51 Page 13
3
14
INSTALLATION AND CONNECTIONS
Unpacking
After unpacking, immediately report any damage to the
delivering carrier or dealer. Keep the shipping cartons.
For a description and a diagram of accessory equip-
ment included with the IC-756PROII, see Supplied ac-
cessories on p. 1 of this manual.
Selecting a location
Select a location for the transceiver that allows ade-
quate air circulation, free from extreme heat, cold, or
vibrations, and away from TV sets, TV antenna ele-
ments, radios and other electro magnetic sources.
The base of the transceiver has an adjustable stand
for desktop use. Set the stand to one of two angles de-
pending on your operating conditions.
Grounding
To prevent electrical shock, television interference
(TVI), broadcast interference (BCI) and other prob-
lems, ground the transceiver through the GROUND
terminal on the rear panel.
For best results, connect a heavy gauge wire or strap
to a long earth-sunk copper rod. Make the distance be-
tween the [GND] terminal and ground as short as pos-
sible.
RWARNING: NEVER connect the [GND]
terminal to a gas or electric pipe, since the connec-
tion could cause an explosion or electric shock.
Antenna connection
For radio communications, the antenna is of critical im-
portance, along with output power and sensitivity. Se-
lect antenna(s), such as a well-matched 50 antenna,
and feedline. 1.5:1 or better of Voltage Standing Wave
Ratio (VSWR) is recommended for your desired band.
Of course, the transmission line should be a coaxial
cable.
When using 1 antenna, use the [ANT1] connector.
CAUTION: Protect your transceiver from lightning
by using a lightning arrestor.
Antenna SWR
Each antenna is tuned for a specified frequency
range and SWR may be increased out-of-range.
When the SWR is higher than approx. 2.0:1, the
transceivers power drops to protect the nal transis-
tor. In this case, an antenna tuner is useful to match
the transceiver and antenna. Low SWR allows full
power for transmitting even when using the antenna
tuner. The IC-756PROII has an SWR meter to mon-
itor the antenna SWR continuously.
PL-259 CONNECTOR INSTALLATION EXAMPLE
30 mm
9
8
in 10 mm
3
8
in 12 mm
1
16
in
30 mm
10 mm (soft solder)
10 mm
12 mm
solder solder
Soft
solder
Coupling ring
Slide the coupling ring
down. Strip the cable
jacket and soft solder.
Slide the connector
body on and solder it.
Screw the coupling
ring onto the
connector body.
Strip the cable as
shown at left. Soft sol-
der the center con-
ductor.
q
w
e
r
IC-756PROII.qxd 02.1.8 15:51 Page 14
3
15
INSTALLATION AND CONNECTIONS
Required connections
Front panel
Rear panel
SWR
S
COMP
ALC
Po
0
10
10
25 50
100
20
1
0
1.5
2
3
1
5
9
+20
+40
+6 0dB
dB
RIT/ TX
TX
F-1
SSB
F-2 F-3 F-4 F-5
CW/RTTY
AM/FM FILTER EXIT/SET
1
2
3
4
5
6
7
8
9
0
ENT
NOTCH
PBT CLR
LOCKTX
RX
NOTCH
TWIN PBT
CW PITCH
REC/PLAY
LOCK/SPEECH
RIT CLEAR
SPLIT
MP-W MP-R
DUAL
WATCH
VFO/
MEMO
MAIN/
SUB
CHANGE
1.8 3.5 7
10 14 18
21 24 28
GENE
50
F-INP
MW
M-CL
TS
XFC
i756PRO™
TIMER
POWER
TRANSMIT
PHONES
ELEC-KEY
MIC
TUNER MONITOR NB NR
AF BAL NRRF/SQL
MIC GAIN RF POWER COMP KEY SPEEDBK-IN DELAY
HF/50MHz TRANSCEIVER
CW KEY
A straight key can be used
when the internal electronic
keyer is turned OFF in keyer
set mode. (p. 43)
MICROPHONES (p. 84)
SM-20HM-36
GROUND (p. 14)
Use the heaviest gauge wire
or strap available and make
the connection as short as
possible.
Grounding prevents electrical
shocks, TVI and other
problems.
ANTENNA 1, 2 (p. 14)
[Example]: ANT1 for 1.818 MHz bands
ANT2 for 2150 MHz bands
DC POWER SUPPLY (p.17)
STRAIGHT KEY
PS-125
IC-756PROII.qxd 02.1.8 15:51 Page 15
Advanced connections
Front panel
Rear panel
16
3
INSTALLATION AND CONNECTIONS
SWR
S
COMP
ALC
Po
0
10
10
25 50
100
20
1
0
1.5
2
3
1
5
9
+20
+40
+6 0dB
dB
RIT/ TX
TX
F-1
SSB
F-2 F-3 F-4 F-5
CW/RTTY
AM/FM FILTER EXIT/SET
1
2
3
4
5
6
7
8
9
0
ENT
NOTCH
PBT CLR
LOCKTX
RX
NOTCH
TWIN PBT
CW PITCH
REC/PLAY
LOCK/SPEECH
RIT CLEAR
SPLIT
MP-W MP-R
DUAL
WATCH
VFO/
MEMO
MAIN/
SUB
CHANGE
1.8 3.5 7
10 14 18
21 24 28
GENE
50
F-INP
MW
M-CL
TS
XFC
i756PRO™
TIMER
POWER
TRANSMIT
PHONES
ELEC-KEY
MIC
TUNER MONITOR NB NR
AF BAL NRRF/SQL
MIC GAIN RF POWER COMP KEY SPEEDBK-IN DELAY
HF/50MHz TRANSCEIVER
HEADPHONES
MIC
The AFSK modulation signal
can be input from [MIC]. (p. 20)
ANTENNA 1, 2 (pgs. 18, 19)
Connects a linear amplifier,
antenna selector, etc.
EXTERNAL SPEAKER (p. 84)
ACC SOCKETS (pgs. 13, 20)
RX ANTENNA
TRANSVERTER
(p. 19)
Connects a transverter
for V/UHF band use.
SP-21
AH-4/AH-3
(p. 19)
AH-2b
[REMOTE] (p. 79)
Used for computer control and transceive operation.
[SEND], [ALC]
(p. 18)
Used for connecting a
non-Icom linear ampli-
fier.
When using the AH-4/AH-3,
it must be connected to the
[ANT1] connector.
IC-756PROII.qxd 02.1.8 15:51 Page 16
17
3
INSTALLATION AND CONNECTIONS
Power supply connections
Use the optional PS-125 DC power supply with a 25 A
capacity when operating the transceiver with AC
power. Refer to the diagrams below.
CAUTION: Before connecting the DC power
cable, check the following important items. Make
sure:
The [POWER] switch is OFF.
Output voltage of the power source is 1215 V
when you use a non-Icom power supply.
DC power cable polarity is correct.
Red : positive + terminal
Black : negative _ terminal
CONNECTING A DC POWER SUPPLY
to DC power
socket
A DC power supply
AC outlet
AC cable
30 A fuses
Supplied
DC power cable
13.8 V; at least 23 A
Black
_
Red
+
Transceiver
CONNECTING A VEHICLE BATTERY
12 V
battery
Supplied
DC power cable
+ red
_ black
Crimp
Solder
Grommet
NEVER connect to
a 24 V battery.
NOTE: Use terminals for
the cable connections.
NEVER connect to a battery without supplied DC fuses,
otherwise a re hazard may occur.
CONNECTING PS-125 DC POWER SUPPLY
PS-125
Connect to an AC outlet
using the supplied AC cable.
DC power cable
DC power
socket
Transceiver
IC-756PROII.qxd 02.1.8 15:51 Page 17
18
3
INSTALLATION AND CONNECTIONS
Linear amplier connections
Use the [ANT1] connector when connecting a linear
amplier.
CONNECTING THE IC-PW1
Turn OFF the transceivers antenna tuner while tuning the IC-PW1s tuner.
To an
antenna
ACC-1
ANT
ANT2
ANT1
ACC(2)
INPUT1
INPUT2
REMOTE
EXCITER
1
1&2
GND
GND
IC-PW1
AC outlet
(Non-European versions: 100120/220240 V
European version : 230 V)
Ground
Transceiver
REMOTE
Remote control cable (supplied with the IC-PW1)
ACC cable (supplied with the IC-PW1)
Be sure to connect the cable
to the 7-pin ACC(2) jack.
Coaxial cable
(supplied with the IC-PW1)
Coaxial cable
(optional)
Connect
[INPUT2]
if necessary
CONNECTING A NON-ICOM LINEAR AMPLIFIER
R WARNING:
Set the transceiver output power
and linear amplifier ALC output
level referring to the linear amplier
instruction manual.
The ALC input level must be in the
range 0 V to 4 V, and the trans-
ceiver does not accept positive volt-
age. Non-matched ALC and RF
power settings could cause a re or
ruin the linear amplier.
The specications for the SEND relay are 16 V DC 0.5 A. If this
level is exceeded, a large external relay must be used.
RF OUTPUT RF INPUT
ALC
SEND
50 coaxial cable
Transceiver
ANT1
ALC SEND
To an
antenna
Non-Icom linear amplifier
IC-756PROII.qxd 02.1.8 15:51 Page 18
External antenna tuner connection
CONNECTING THE AH-4/AH-3
The AH-4 or AH-3 must be connected to [ANT1].
19
3
INSTALLATION AND CONNECTIONS
When 2 to 13.8 V is applied to pin 6 of [ACC(2)], the
[XVERT] jack is activated for transverter operation
and the antenna connectors do not receive or trans-
mit any signals. (p. 13)
While receiving, the [XVERT] jack can be activated as
an input terminal from an external transverter.
While transmitting, the [XVERT] jack outputs signals
of the displayed frequency at 20 dBm (22 mV) as
signals for the external transverter.
Transverter jack
Transverter jack information
Coaxial cable (from the AH-4 or AH-3)
ANT1
Control cable
Transceiver
Ground
AH-4 or AH-3
Long wire or optional AH-2b
IC-756PROII.qxd 02.1.8 15:51 Page 19
20
3
INSTALLATION AND CONNECTIONS
AF input
Ground (GND)
PTT
SQUELCH input*
RTTY keying
* Connect the SQUELCH line when required.
Terminal unit (TU) or
Terminal Node Controller (TNC)
[ACC(1)] socket
(Rear panel view)
1
2
3
4
5
6
7
8
AFSK output
AF input
Ground (GND)
Ground (GND)
PTT
SQUELCH input*
* Connect the SQUELCH line when required.
Terminal Node Controller (TNC)
or Scan converter
[ACC(1)] socket
(Rear panel view)
1
2
3
4
5
6
7
8
AF input
Ground (GND)
AFSK output
PTT
SQUELCH input*
* Connect the SQUELCH line when required.
Terminal Node Controller (TNC)
or Scan converter
[MIC] connector
(Front panel view)
1
2
3
4
5
6
7
8
FSK and AFSK (SSTV) connections
To connect a terminal unit, TNC or scan converter,
refer to the diagram below.
For RTTY operation:
Narrow filter settings may not pass RTTY signals.
Be sure to select the appropriate IF filter settings
corresponding to the signal width. (p. 29)
FSK (RTTY) connection
Use RTTY mode for
operation
AFSK and SSTV connections
Use SSB or FM mode
for operation
AFSK and SSTV connections via microphone connector
Use SSB or FM mode
for operation
When connected to the [MIC] connector, [MIC
GAIN] and [AF] control adjustment is required.
IC-756PROII.qxd 02.1.8 15:51 Page 20
4
21
FREQUENCY SETTING
Before rst applying power, make sure all connections
required for your system are complete by referring to
Chapter 3. Then, reset the transceiver using the fol-
lowing procedure.
Resetting CLEARS all programmed contents in
memory channels and returns programmed values
in set mode to default values.
q Make sure the transceiver power is OFF.
w While pushing [M-CL] and [F-INP], push [POWER]
to turn power ON.
The internal CPU is reset.
A/D convertor calibration of the DSP unit starts and it
takes 10 sec.
The transceiver displays its initial VFO frequencies when
resetting is complete.
e Correct the set mode settings after resetting, if de-
sired.
Initial settings
After resetting the transceiver, set controls and
switches as shown in the gure below.
Under cooler temperatures, the LCD may appear
dark and unstable after turning power ON. This is
normal and does not indicate any equipment mal-
function.
CW : Max. clockwise
CCW : Max. counterclockwise
When rst applying power (CPU resetting)
[POWER] [M-CL]
[F-INP]
Turn power ON, then check the display. If any of the
following indicators appear, turn them OFF as follows:
Quick tuning step indicator : Push [TS].
1 Hz frequency readout : Push [TS] for 2 sec.
(while quick tuning
step is OFF)
RIT indicator “” : Push [RIT].
TX indicator “” : Push [TX].
Split indicator “” : Push [SPLIT].
Dualwatch indicator “”: Push
[DUAL WATCH].
Twin peak lter indicator “”
: Push [RTTY FIL].
Auto notch indicator “” : Push [NOTCH].
Manual notch indicator “”: Push [NOTCH].
MN
AN
TPFTPF
DUAL-WDUAL-W
SPLITSPLIT
TXTX
RITRIT
IC-756PROII.qxd 02.1.8 15:51 Page 21
22
4
FREQUENCY SETTING
VFO description
VFO is an abbreviation of Variable Frequency Oscilla-
tor, and traditionally refers to an oscillator.
The transceivers VFO is somewhat different. The VFO
of the IC-756PROII acts like a computers window and
can show one frequency and one operating mode.
You can call up a desired frequency to the VFO with
the keypad, memo pad-read switch (see p. 56) or the
memory transfer function (see p. 54). You can also
change the frequency with the tuning dial and select
the operating mode with the mode switches.
During dualwatch or split frequency operation, the sub
VFO is functional (non-outline, non-spotted, larger fre-
quency characters). While pushing [XFC] during split
frequency operation, you can change the transmit
readout frequency with the keypad, memo pad-read
switch or the memory transfer function.
METER
Po
ANT
1
BWBW
2.4k2.4k
SFTSFT
0
VFOVFO
FIL2FIL2
USBUSB
qw:pp
TXTX
1
CWCW
qr.qpp.pp
21.076.5021.076.50
Select
TUNING DIAL
MEMORY
CHANNEL
MODE
SWITCHES
MEMO PAD
KEYPAD
(BAND KEY)
Transfer
Transfer
Transfer
Change
21.295 MHz
28.025 MHz
7.001 MHz
Differences between VFO mode and memory mode
VFO MODE
VFO shows a frequency and operating mode. If the
frequency or operating mode is changed, the VFO
automatically memorizes the new frequency or new
operating mode.
When a VFO is selected from another band or mem-
ory mode, the frequency and operating mode last
used for that VFO appear.
[EXAMPLE]
MEMORY MODE (pgs. 5155)
Each memory channel shows a frequency and oper-
ating mode like a VFO. Even if the frequency or mode
is changed, the memory channel does not memorize
the new frequency or operating mode.
When the memory channel is selected from another
memory channel or VFO mode, the memorized fre-
quency and operating mode appear.
[EXAMPLE]
METER
METER
Po
Po
ANT
ANT
1
METER
METER
Po
Po
ANT
ANT
1
METER
METER
Po
Po
ANT
ANT
1
METER
METER
Po
Po
ANT
ANT
1
BW
BW
2.4k
2.4k
SFT
SFT
0
VFO
VFO
FIL2
FIL2
USB
USB
qw:pp
TX
TX
1
CW
CW
qr.qwe.pp
21.076.50
21.076.50
BW
BW
500
500
SFT
SFT
0
BPF
BPF
1
FIL2
FIL2
CW
CW
qw:pp
TX
TX
VFO
VFO
USB
USB
wq.puy.tp
14.123.00
14.123.00
BW
BW
2.4k
2.4k
SFT
SFT
0
VFO
VFO
FIL2
FIL2
USB
USB
qw:pp
TX
TX
1
CW
CW
qr.qwe.pp
21.076.50
21.076.50
BW
BW
2.4k
2.4k
SFT
SFT
0
VFO
VFO
FIL2
FIL2
USB
USB
qw:pp
TX
TX
1
CW
CW
qr.qpp.pp
21.076.50
21.076.50
BW
BW
2.4k
2.4k
SFT
SFT
0
FIL2
FIL2
USB
USB
qw:pp
TX
TX
VFO
VFO
USB
USB
qr.qpp.pp
14.100.00
14.100.00
BW
BW
2.4k
2.4k
SFT
SFT
0
FIL2
FIL2
USB
USB
qw:pp
TX
TX
VFO
VFO
USB
USB
wq.wrt.pp
14.100.00
14.100.00
BW
BW
2.4k
2.4k
SFT
SFT
0
FIL2
FIL2
USB
USB
qw:pp
TX
TX
VFO
VFO
USB
USB
qr.qwe.pp
14.100.00
14.100.00
BW
BW
2.4k
2.4k
SFT
SFT
0
1
FIL2
FIL2
USB
USB
qw:pp
TX
TX
VFO
VFO
USB
USB
qr.qpp.pp
14.100.00
14.100.00
1
12
12
1
METER
METER
Po
Po
ANT
ANT
1
METER
METER
Po
Po
ANT
ANT
1
METER
METER
Po
Po
ANT
ANT
1
METER
METER
Po
Po
ANT
ANT
1
VFO is selected.
The frequency is changed.
Memory mode is selected.
VFO is selected again.
Memory channel 1 is selected.
The frequency is changed.
Another memory channel is selected.
Memory channel 1 is selected again.
Changed frequency (14.123 MHz) appears.
Changed frequency (14.123 MHz) does not appear and
memorized frequency (14.100 MHz) appears instead.
IC-756PROII.qxd 02.1.8 15:51 Page 22
23
4
FREQUENCY SETTING
Direct frequency entry with the keypad
Frequency setting with the tuning dial
For ham band use
q Push the desired band key on the keypad 13
times.
3 different frequencies can be selected on each band
with the band key. (See Triple band stacking register
below.)
w Rotate the tuning dial to set the desired frequency.
e Select the desired operating mode with the mode
switch. (p. 25)
For general coverage receiver use
q Push [GENE] on the keypad 13 times.
The [GENE] key calls up a frequency for general cov-
erage receiver use.
w Rotate the tuning dial to set the desired frequency.
For quick tuning, use the quick tuning step function.
(p. 24)
e Select the desired operating mode with the mode
switch. (p. 25)
BWBW
2.4k2.4k
SFTSFT
0
VFOVFO
FIL2FIL2
USBUSB
qw:pp
TXTX
1
CWCW
o.uip.pp
21.076.5021.076.50
METER
Po
ANT
1
METER
Po
ANT
1
BWBW
2.4k2.4k
SFTSFT
0
VFOVFO
FIL2FIL2
USBUSB
qw:pp
TXTX
1
CWCW
qt.qpp.pp
21.076.5021.076.50
METER
Po
ANT
1
BWBW
2.4k2.4k
SFTSFT
0
VFOVFO
FIL2FIL2
USBUSB
qw:pp
TXTX
1
CWCW
wq.wot.pp
21.076.5021.076.50
METER
Po
ANT
1
BWBW
2.4k2.4k
SFTSFT
0
VFOVFO
FIL2FIL2
USBUSB
qw:pp
TXTX
1
CWCW
wq.wpp.pp
21.076.5021.076.50
The transceiver has a keypad for direct frequency
entry as described below.
q Push [F-INP].
•“ appears.
w Input the desired frequency.
Input “•” (decimal point) between the MHz units and
kHz units.
e Push [(F-INP)ENT] to enter the input frequency.
To cancel the input, push [MAIN/SUB] instead of
[(F-INP)ENT].
[EXAMPLE]
If the dial lock function is activated, the lock indicator lights, and the tuning dial does
not function. In this case, push [LOCK/SPEECH] to deactivate the lock function.
TRIPLE BAND STACKING REGISTER
The triple band stacking register provides 3 memories
in one band. 3 sets of a frequency and mode on each
band are automatically stored when used.
If a band key is pushed once, the frequency and
mode last used are called up. When the key is
pushed again, another stored frequency and mode
are called up.
This function is convenient when you operate 3
modes on one band. For example, one register is
used for a CW frequency, another for an SSB fre-
quency and the other one for an RTTY frequency.
[EXAMPLE]
21
7
21
7
14
5
14.025.00
CW
14.090.00
RTTY
14.195.00
USB
14 MHz band
Push
14
5
21.025.00
CW
21.090.00
RTTY
21.295.00
USB
21 MHz band
Push
F-INP
ENT
21.280 21.245
14.025 MHz
1 04 2 5
08 7 2 5
ENT7 0 6
F-INP ENT
2 4 5
F-INP ENT
18.0725 MHz
1F-INP
706 kHz
F-INP ENT
15
5.100 MHz
F-INP ENT
7
7.000 MHz
IC-756PROII.qxd 02.1.8 15:51 Page 23
24
4
FREQUENCY SETTING
Advanced tuning functions
SELECTING THE 1 Hz STEP
The minimum tuning step of 1 Hz can be used for ne
tuning.
q Turn OFF the quick tuning step.
•“ does not appear.
w Push [TS] for 1 sec. to toggle the 1 Hz tuning step
ON and OFF.
RIT and/or TX also functions in 1 Hz tuning step when
used.
SCOPESCOPE
VOICEVOICE
MEMORYMEMORY
SCANSCAN
BWBW
2.4k2.4k
SFTSFT
0
FIL2FIL2
USBUSB
qw:pp
1
TXTX
VFOVFO
1
USBUSB
USBUSB
USBUSB
FIL2FIL2
qr.qot.ppp
qr.wpt.ppp
14.100.0014.100.00
14.100.0014.100.00
VFOVFO
ATTATT
0FF0FF
METERMETER
PoPo
P.AMPP.AMP
1
VOXVOX
OFFOFF
COMPCOMP
OFFOFF
WIDEWIDE
AGCAGC
MIDMID
ANTANT
1
1 Hz step indicator
1
4 TUNING STEP FUNCTION
(SSB data/CW/RTTY only)
While operating in SSB data/CW/RTTY, the
1
4 func-
tion is available for critical tuning. Dial rotation is re-
duced to
1
4 of normal when the
1
4 function is in use.
Push [1/4] to toggle the
1
4 function ON and OFF.
1/4
OFF
1/4
ON
1
4 tuning step OFF
1
4 tuning step ON
AUTO TUNING STEP FUNCTION
When rotating the tuning dial rapidly, the quick tuning
step is automatically selected by the auto tuning step
function.
The auto tuning step function can be turned OFF in
set mode (p. 72)
QUICK TUNING STEP
The operating frequency can be changed in kHz
steps (0.1, 1, 5, 9, 10, 12.5, 20 or 25 kHz selectable)
for quick tuning.
q Push [TS] momentarily to display the quick tuning
indicator.
w Rotate the tuning dial to change the frequency in
programmed kHz steps.
e Push [TS] again to turn OFF the indicator.
r Rotate the tuning dial for normal tuning if desired.
SELECTING THE kHz STEP
q Push [TS] momentarily to turn the quick tuning
step ON.
w Push [TS] for 1 sec. to enter the quick tuning step
setting display.
Selected tuning steps for all modes appear.
e Select the desired operating mode.
r Rotate the tuning dial to select the desired tuning
step from 0.1, 1, 5, 9, 10, 12.5, 20 or 25 kHz.
t Repeat steps e and r to select quick tuning
steps for other modes, if desired.
y Push [EXIT/SET] to exit the setting display.
DEFDEF
TSTS
FMFMAMAM
1010
(kHz)(kHz)
1111
SSBSSB CWCW RTTYRTTY
VOXVOX
OFFOFF
COMPCOMP
OFFOFF
WIDEWIDE
AGCAGC
MIDMID
BWBW
2.4k2.4k
SFTSFT
0
FIL2FIL2
qw:pp
TXTX
CWCW
qr.qpp.pp
21.076.5021.076.50
VFOVFO
USBUSB
1
METER
Po
ANT
1
Quick tuning indicator
IC-756PROII.qxd 02.1.8 15:51 Page 24
5
25
RECEIVE AND TRANSMIT
Mode selection
Twin PBT operation
General PBT (Passband Tuning) function electronically
narrows the IF passband width by shifting the IF fre-
quency to slightly outside of the IF lter passband to
reject interference. This transceiver uses the DSP cir-
cuit for the PBT function. Moving both [TWIN PBT]
controls to the same position shifts the IF.
The LCD shows the passband width and shift fre-
quency graphically.
Push [FILTER] for 1 sec. to enter the lter set mode.
Current passband width and shift frequency is dis-
played in the lter set mode screen.
To set the [TWIN PBT] controls to the center posi-
tions, push [PBT CLR] for 1 sec.
The variable range depends on the passband width
and mode. The edge of the variable range is half of the
passband width, and PBT is adjustable in 25 or 50 Hz
steps. These controls function as an IF shift control
while in AM mode and when the RTTY lter is turned
ON. Only the inner control may function in this case.
IF shift is adjustable in 20/40 Hz steps in RTTY (RTTY
lter is turned ON) or 150/300/500 Hz steps in AM.
[TWIN PBT] should normally be set to the center posi-
tions (PBT setting is cleared) when there is no interfer-
ence.
When PBT is used, the audio tone may be changed.
Not available for FM mode.
While rotating [TWIN PBT], noise may occur. This comes
from the DSP unit and does not indicate an equipment
malfunction.
The following modes are available in the IC-
756PROII:
SSB (LSB/USB), CW, CW-R (CW reverse), RTTY,
RTTY-R (RTTY reverse), AM and FM. Data modes of
SSB, AM and FM are also available.
Microphone signals are muted when data mode is
selected.
To select a mode of operation, push the desired mode
switch momentarily. Push the switch again to toggle
between USB and LSB, CW/CW-R and RTTY/RTTY-
R, AM and FM, if necessary. Push the switch for
1 sec. to toggle between CW and CW-R, RTTY and
RTTY-R, or to select data mode, if necessary.
See the diagram below for the order of selection.
PBT OPERATION EXAMPLE
SSB
CW/RTTY
AM/FM
USB-D USB
CW-R CW
AM-D AM
Push mode switch
for 1 sec.
Push mode switch
momentarily.
LSB LSB-D
RTTY RTTY-R
FM FM-D
TWIN PBT TWIN PBT
TWIN PBT
IF center frequency Interference Desired signal
Passband
Both controls at
center position
Cutting a lower
passband
Cutting both higher and
lower passbands
Interference Interference
Desired signal
Passband
IC-756PROII.qxd 02.1.8 15:51 Page 25
26
5
RECEIVE AND TRANSMIT
Notch function
This transceiver has auto and manual notch func-
tions. The auto notch function automatically attenu-
ates more than 3 beat tones, tuning signals, etc.,
even if they are moving. The manual notch can be set
to attenuate a frequency via the [NOTCH] control.
Push [NOTCH] to toggle the notch function be-
tween auto, manual and OFF in SSB and AM
modes.
Push [NOTCH] to turn the manual notch function
ON and OFF in CW mode.
Push [NOTCH] to turn the auto notch function ON
and OFF in FM mode.
Set to attenuate a frequency for manual notch via the
[NOTCH] control.
•“AN appears when auto notch is in use.
•“MN appears when manual notch is in use.
While operating the manual notch, noise may be
heard. This comes from the DSP unit and does not
indicate an equipment malfunction.
Unwanted tone
frequency
Desired
signal (AF)
Desired
signal (AF)
Particular frequency
is attenuated
Auto notch OFF Auto notch ON
Noise reduction
The noise reduction function reduces noise compo-
nents and picks out desired signals which are buried
in noise. The received signals are converted to digital
signals and then the desired signals are separated
from the noise.
q Push the [NR] switch to turn the noise reduction
ON.
[NR] indicator lights.
w Rotate the [NR] control to adjust the noise reduc-
tion level.
e Push the [NR] switch to turn the noise reduction
OFF.
[NR] indicator lights off.
Deep rotation of the [NR] control results in audio
signal masking or distortion. Set the [NR] control
for maximum readability.
BAL
NR
Noise reduction OFF Noise reduction activated
Desired
signal (CW)
Noise components
BAL
NR
IC-756PROII.qxd 02.1.8 15:51 Page 26
27
5
RECEIVE AND TRANSMIT
Noise blanker
The noise blanker eliminates pulse-type noise such
as from car ignitions. The noise blanker is not avail-
able for FM mode.
q Push the [NB] switch to turn the noise blanker ON.
[NB] indicator lights.
w Push the [NB] switch for 1 sec. to enter the noise
blanker level set mode.
e Rotate the tuning dial to adjust the noise blanker
level.
Push [(F-3)DEF] for 1 sec. to return to default value.
r Push the [NB] switch to turn the noise blanker
OFF.
[NB] indicator goes off.
When using the noise blanker, received signals
may be distorted if they are excessively strong.
[NB] switch Tuning dial
VOX
VOX
ON
ON
COMP
COMP
OFF
OFF
WIDE
WIDE
AGC
AGC
MID
MID
NB
NB
NB Level
NB Level
50%
50%
DEF
DEF
DSP lter shape
The type of DSP lter shape for each SSB and CW
can be selected independently from soft and sharp.
q Push the [EXIT/SET] several times to close a
multi-function screen, if necessary.
w Push the [EXIT/SET] switch for 1 sec. to enter set
mode.
e Push the [(F-3)DSP] switch to enter the DSP lter
set mode.
r Push one of [(F2)SSB-FIL] or [(F4)CW-FIL] to se-
lect the desired DSP filter shape from sharp and
soft for each SSB or CW mode, respectively.
t Push the [ENTER/SET] twice to exit the set mode.
[EXIT/SET] switch
[(F-3)DSP] switch
AGC
AGC
MID
MID
BK-IN
BK-IN
OFF
OFF
1/4
1/4
OFF
OFF
DSP FILTER SET
SSB
SSB
SHARP
SHARP
CW
CW
SHARP
SHARP
SSB-FIL
SSB-FIL
CW-FIL
CW-FIL
SSB
SSB
SOFT
SOFT
CW
CW
SOFT
SOFT
F-4
Push
F-2
Push
IC-756PROII.qxd 02.1.8 15:51 Page 27
28
5
RECEIVE AND TRANSMIT
The transceiver has 5 RTTY lters in addition to nor-
mal IF filters. The passband width can be selected
from 1 kHz, 500 Hz, 350 Hz, 300 Hz and 250 Hz.
When the RTTY lter is turned ON, the RTTY tuning
meter can be used. (p. 42)
Moreover, the twin peak lter changes the receive fre-
quency response by boosting 2 particular frequencies
(2125 and 2295 Hz) for better copying of desired RTTY
signals.
q Push [CW/RTTY] once or twice to select RTTY
mode.
w Push [RTTY FIL] to turn the RTTY lter ON.
•“TPF appears when the twin peak lter is turned ON.
RTTY lter selection
q Push [EXIT/SET] several times to close a multi-
function screen, if necessary.
w Select RTTY mode.
e Push [RTTY FIL] for 1 sec. to enter RTTY lter set
mode.
r Push [(F-1)Y] to select band width item.
t Rotate the tuning dial to select the RTTY filter
width from 1 kHz, 500 Hz, 350 Hz, 300 Hz and
250 Hz.
Push [(F-3)DEF] for 1 sec. to select a default value.
y Push [(F-2)Z] to select twin peak lter item.
The received audio volume may become greater when
the twin peak lter is turned ON.
u Rotate the tuning dial to turn the twin peak filter
function ON or OFF.
i Push [EXIT/SET] to exit the RTTY lter set mode.
BWBW
350350
SFTSFT
0
VFOVFO
FIL2FIL2
RTTYRTTY
qw:pp
TXTX
1
CWCW
qr.qpp.pp
21.076.5021.076.50
TPFTPF
METERMETER
PoPo
ANTANT
1
[RTTY FIL]
[CW/RTTY]
TPF indicator
RTTY reverse mode
Received characters are occasionally garbled when
the receive signal is reversed between MARK and
SPACE. This reversal can be caused by incorrect
TNC connections, settings, commands, etc.
To receive a reversed RTTY signal correctly, select
RTTY-R (RTTY Reverse) mode.
q Push [CW/RTTY] once or twice to select RTTY
mode.
w Push [CW/RTTY] for 1 sec. to select RTTY or
RTTY-R mode.
Check the receive signal.
RTTY lter/Twin peak lter
CW reverse mode
CW-R (CW Reverse) mode receives CW signals with
a reverse side CW carrier point like that of LSB and
USB modes.
Use when interfering signals are near a desired signal
and you want to change the interference tone.
q Push [CW/RTTY] once or twice to select CW
mode.
w Push [CW/RTTY] for 1 sec. to select CW or CW-R
mode.
Check the interfering tone.
Push for 1 sec.
BFO
CW-R mode (USB side)
BFO
Desired signal
CW mode (LSB side)
Interference
Desired signalInterference
CW/RTTY
IC-756PROII.qxd 02.1.8 15:51 Page 28
29
5
RECEIVE AND TRANSMIT
CW pitch control
The received CW audio pitch and monitored CW
audio can be adjusted to suit your preferences (300 to
900 Hz) without changing the operating frequency.
The received CW audio pitch can be adjusted in
25 Hz steps.
The lter set mode screen graphically displays the
CW pitch operations. (See below.)
IF lter selection
The transceiver has 3 passband width IF filters for
each mode.
For SSB and CW modes, the passband width can be
set within 50 to 3600 Hz in 50 or 100 Hz steps. A total
of 41 passband widths are available.
For RTTY mode, the passband width can be set
within 50 to 2700 Hz in 50 or 100 Hz steps. A total of
32 passband widths are available.
For AM and FM modes, the passband width is xed
and 3 passband widths are available.
The filter selection is automatically memorized in
each mode.
The PBT shift frequencies are automatically mem-
orized in each lter.
IF lter selection
q Select the desired mode.
w For RTTY mode, turn OFF the RTTY lter by push-
ing [RTTY FIL].
e Push [FILTER] several times to select the IF lter
1, 2 or 3.
The selected passband width and lter number is dis-
played in the LCD.
Filter passband width setting
(SSB, CW and RTTY mode only)
q Select SSB, CW or RTTY mode.
Passband widths for AM and FM modes are xed and
cannot be set.
w For RTTY mode, turn OFF the RTTY lter by push-
ing [RTTY FIL].
e Push [FILTER] for 1 sec. to enter lter set mode.
r Push [FILTER] several times to select the desired
IF lter.
t While pushing [(F-1)BW], rotate the tuning dial to
set the desired passband width.
In SSB and CW modes, the passband width can be set
within the following range.
50 to 500 Hz 50 Hz steps
600 to 3600 Hz 100 Hz steps
In RTTY mode, the passband width can be set within
the following range.
50 to 500 Hz 50 Hz steps
600 to 2700 Hz 100 Hz steps
Push [(F-3)DEF] to select the default value.
y Repeat steps r to t if desired.
u Push [EXIT/SET] to exit the lter set mode screen.
The PBT shift frequencies are cleared when the
passband width is changed.
This lter set mode screen graphically displays the
PBT shift frequencies and CW pitch operations.
BWBW
DEFDEF
SFTSFT
0
FIL2FIL2
USBUSB
qw:pp
TXTX
VFOVFO
USBUSB
USBUSB
USBUSB
FIL2FIL2
qr.qot.pp
qr.wpt.pp
14.100.0014.100.00
14.100.0014.100.00
1
1
VFOVFO
BWBW
2.4k2.4k
FILTERFILTER
SSBSSB
FIFIL 1
FIFIL 2
FIFIL 3
3.0k3.0k
2.4K2.4K
1.8K1.8K
PBT2PBT2
PBT1PBT1
300300 15001500 27002700
ANTANT
1
COMPCOMP
OFFOFF
WIDEWIDE
METERMETER
PoPo
P.AMPP.AMP
1
AGCAGC
MIDMID
ATTATT
OFFOFF
VOXVOX
OFFOFF
Passband
width
Selected
IF filter
SFTSFT
0
FIL2FIL2
USBUSB
qw:pp
TXTX
VFOVFO
USBUSB
USBUSB
USBUSB
FIL2FIL2
qr.qot.pp
qr.wpt.pp
14.100.0014.100.00
14.100.0014.100.00
1
1
VFOVFO
BWBW
2.4k2.4k
ANTANT
1
METERMETER
PoPo
P.AMPP.AMP
1
ATTATT
OFFOFF
Passband
width
Selected
IF filter
IC-756PROII.qxd 02.1.8 15:51 Page 29
30
5
RECEIVE AND TRANSMIT
AGC function
The AGC (auto gain control) controls receiver gain to
produce a constant audio output level even when the
received signal strength is varied by fading, etc.
The transceiver has 3 AGC characteristics (time con-
stant; fast, mid, slow) for non-FM mode.
The FM mode AGC time constant is fixed as
FAST (0.1 sec.) and AGC time constant cannot be
selected.
AGC time constant selection
q Select non-FM mode.
w Push [AGC] several times to select AGC fast, AGC
medium (MID) or AGC slow.
Selectable AGC time constant (unit: sec.)
Setting the AGC time constant
q Select the desired mode except FM mode.
w Push [AGC] for 1 sec. to enter AGC set mode.
e Push [AGC] several times to select FAST time
constant.
r Rotate the tuning dial to set the desired time con-
stant for AGC FAST.
AGC time constant can be set between 0.1 to 8.0 sec.
(depends on mode) or turned OFF.
Push [(F-3)DEF] to select a default value.
t Push [AGC] to select medium time constant.
y Rotate the tuning dial to set the desired time con-
stant for AGC MID.
AGC time constant can be set between 0.1 to 8.0 sec.
(depends on mode) or turned OFF.
Push [(F-3)DEF] to select a default value.
u Push [AGC] to select slow time constant.
i Rotate the tuning dial to set the desired time con-
stant for AGC SLOW.
AGC time constant can be set between 0.1 to 8.0 sec.
(depends on mode) or turned OFF.
Push [(F-3)DEF] to select a default value.
o Select another mode except FM. Repeat steps e
to i if desired.
!0 Push [EXIT/SET] to exit the AGC set mode screen.
DEFDEF
SFTSFT
0
FIL2FIL2
USBUSB
qw:pp
TXTX
VFOVFO
USBUSB
USBUSB
USBUSB
FIL2FIL2
qr.qot.pp
qr.wpt.pp
14.100.0014.100.00
14.100.0014.100.00
1
1
VFOVFO
BWBW
2.4k2.4k
AGCAGC
(sec)(sec)
FMFM
AMAM
0.10.1
3.03.0
5.05.0
7.07.0
1.21.2
0.50.5
0.10.1
0.10.1
0.30.3
2.02.0
6.06.0
0.50.5
1.21.2
------
------
SSBSSB
FASTFAST
SLOWSLOW
MIDMID
CWCW RTTYRTTY
ANTANT
1
COMPCOMP
OFFOFF
WIDEWIDE
METERMETER
PoPo
P.AMPP.AMP
1
AGCAGC
MIDMID
ATTATT
OFFOFF
VOXVOX
OFFOFF
Medium AGC time constant
Slow AGC time constant
Fast AGC time constant
AGC
MID
AGC
SLOW
AGC
FAST
Mode Default Selectable AGC time constant
0.3 (FAST)
OFF, 0.1, 0.2, 0.3, 0.5, 0.8, 1.2,
SSB 2.0 (MID)
1.6, 2.0, 2.5, 3.0, 4.0, 5.0, 6.0
6.0 (SLOW)
0.1 (FAST)
OFF, 0.1, 0.2, 0.3, 0.5, 0.8, 1.2,
CW 0.5 (MID)
1.6, 2.0, 2.5, 3.0, 4.0, 5.0, 6.0
1.2 (SLOW)
0.1 (FAST)
OFF, 0.1, 0.2, 0.3, 0.5, 0.8, 1.2,
RTTY 0.5 (MID)
1.6, 2.0, 2.5, 3.0, 4.0, 5.0, 6.0
1.2 (SLOW)
3.0 (FAST)
OFF, 0.3, 0.5, 0.8, 1.2, 1.6, 2.0,
AM 5.0 (MID)
2.5, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0
7.0 (SLOW)
FM 0.1 (FAST) Fixed
IC-756PROII.qxd 02.1.8 15:51 Page 30
31
5
RECEIVE AND TRANSMIT
Dualwatch operation
Dualwatch monitors 2 frequencies with the same
mode simultaneously.
During dualwatch, both frequencies should be on the
same band, because the bandpass lter in the RF cir-
cuit is selected for the main readout frequency.
q Set a desired frequency.
w Push [DUALWATCH] for 1 sec.
Equalized receive frequency and “” appear in
the LCD. This quick dualwatch function can be turned
OFF in set mode. (p. 69)
Pushing [DUALWATCH] momentarily activates the du-
alwatch with the previously operated frequency.
e Set another desired frequency using the tuning
dial.
r Adjust [BAL] to set a suitable signal strength bal-
ance between the main and sub readout frequen-
cies.
S-meter shows the combined signal strength.
t To transmit on the sub readout frequency, push
[CHANGE] or [SPLIT].
RIT function can be used for the main readout only.
TX function can be used for the transmit readout
(main readout when the split function is OFF; sub
readout when the split function is ON).
BWBW
2.4k2.4k
SFTSFT
0
FIL2FIL2
USBUSB
qw:pp
VFOVFO
TXTX
5656
1
USBUSB
USBUSB
USBUSB
FIL2FIL2
wq.wop.pp
wq.wop.pp
14.100.0014.100.00
14.100.0014.100.00
VFOVFO
DUAL-WDUAL-W
ANTANT
1
METERMETER
PoPo
P.AMPP.AMP
1
ATTATT
OFFOFF
DUAL-WDUAL-W
Scanning during dualwatch
Scanning operates only for the main readout. To op-
erate the scan during dualwatch, scan on the main
readout and use the sub readout for your QSO using
both dualwatch and split frequency operation.
q Program the desired programmed scan edges in
the same amateur band. See p. 53 for program-
ming.
If you plan to operate a F scan, programming the
scan edges may not be necessary.
w Push [SPLIT] to turn the split frequency function
ON.
•“ appears.
e Select VFO mode for the main readout.
r Set the desired operating frequency for the main
readout.
t Push [DUALWATCH] for 1 sec.
The main and sub readout frequencies are equalized
and the dualwatch function is turned ON.
y Push [(F-4)SCAN] to select the scan screen.
Push [EXIT/SET] several times to close a multi-func-
tion screen, if necessary.
u Push [(F-1)PROG] or [(F-2)F] to start the pro-
grammed scan or F scan, respectively.
Scan activates on the main readout between the pro-
grammed scan edges or within the F span.
Transmitting on the sub readout stops the scan.
i To cancel the scan, push [EXIT/SET].
wq.wop.pp
BWBW
2.4k2.4k
SFTSFT
0
FIL2FIL2
USBUSB
qw:pp
VFOVFO
USBUSB
USBUSB
USBUSB
FIL2FIL2
wq.wtp.pp
14.100.0014.100.00
14.100.0014.100.00
VFOVFO
SPLITSPLIT
1
1
DUAL-WDUAL-W
PROGPROG
F
FINEFINE
F SPANF SPAN
SETSET
SCANSCAN
TXTX
ANTANT
1
COMPCOMP
OFFOFF
WIDEWIDE
METERMETER
PoPo
P.AMPP.AMP
1
AGCAGC
MIDMID
ATTATT
OFFOFF
VOXVOX
OFFOFF
PROGRAM SCANPROGRAM SCAN
F SpanSpan: ±±10kHz10kHz
ProgrammedProgrammed P1:P1: 21.000.00MHz21.000.00MHz
scanscan edgesedges P2:P2: 21.450.00MHz21.450.00MHz
wq.wop.pp
BWBW
2.4k2.4k
SFTSFT
0
FIL2FIL2
USBUSB
qw:pp
VFOVFO
USBUSB
USBUSB
USBUSB
FIL2FIL2
wq.wop.pp
14.100.0014.100.00
14.100.0014.100.00
VFOVFO
SPLITSPLIT
1
1
DUAL-WDUAL-W
TXTX
ANTANT
1
METERMETER
PoPo
P.AMPP.AMP
1
ATTATT
OFFOFF
BWBW
2.4k2.4k
SFTSFT
0
FIL2FIL2
USBUSB
qw:pp
VFOVFO
USBUSB
USBUSB
USBUSB
FIL2FIL2
wq.wop.pp
14.100.0014.100.00
14.100.0014.100.00
VFOVFO
qr.wpt.pp
SPLITSPLIT
1
1
TXTX
ANTANT
1
METERMETER
PoPo
P.AMPP.AMP
1
ATTATT
OFFOFF
SPLITSPLIT
IC-756PROII.qxd 02.1.8 15:51 Page 31
32
5
RECEIVE AND TRANSMIT
Split frequency operation
Split frequency operation allows you to transmit and
receive in the same mode on two different frequen-
cies. The split frequency operation is basically per-
formed using 2 frequencies on the main and sub
readouts.
The following is an example of setting 21.290 MHz for
receiving and 21.310 MHz for transmitting.
q Set 21.290 MHz (USB) in VFO mode.
w Push [SPLIT] momentarily, then push [CHANGE]
for 1 sec.
The quick split function is much more convenient for
selecting the transmit frequency. See the next section
for details.
The equalized transmit frequency and “” appear
on the LCD.
•“TX appears to show the transmit frequencys readout.
e Rotate the tuning dial while pushing [XFC] to set
the transmit frequency to 21.310 MHz.
The transmit frequency can be monitored while pushing
[XFC] or using dualwatch.
r Now you can receive on 21.290 MHz and transmit on
21.310 MHz.
To change the transmit and receive frequencies, push
[CHANGE] to exchange the main and sub readouts.
DIRECT SHIFT FREQUENCY INPUT
The shift frequency can be entered directly.
q Push [F-INP].
w Enter the desired shift frequency with the digit
keys.
1 kHz to 1 MHz can be set.
When you require a minus shift direction, push [ ] in
advance.
e Push [SPLIT].
The shift frequency is input in the sub readout and the
split function is turned ON.
[EXAMPLE]
DUALWATCH FUNCTION
The dualwatch function is convenient for tuning the
transmit frequency while monitoring both frequencies
used for transmitting and receiving.
SPLIT LOCK FUNCTION
Accidentally releasing the [XFC] switch while rotating
the tuning dial changes the receive frequency. To pre-
vent this, use both the split lock and dial lock func-
tions to change the transmit frequency only. The split
lock function cancels the dial lock function while push-
ing [XFC] during split frequency operation.
The dial locks effectiveness during split frequency op-
eration can be selected in the set mode for both re-
ceive and transmit frequencies; or only the receive
frequency. (p. 69)
CONVENIENT
CONVENIENT
1F-INP SPLIT
F-INP 3 SPLIT
To operate on 1 kHz
higher frequency:
To operate on 3 kHz
lower frequency:
CONVENIENT
BWBW
2.4k2.4k
SFTSFT
0
FIL2FIL2
USBUSB
qw:pp
VFOVFO
USBUSB
USBUSB
USBUSB
FIL2FIL2
wq.wop.pp
14.100.0014.100.00
14.100.0014.100.00
VFOVFO
wq.eqp.pp
1
1
SPLITSPLIT
TXTX
ANTANT
1
METERMETER
PoPo
P.AMPP.AMP
1
ATTATT
OFFOFF
BWBW
2.4k2.4k
SFTSFT
0
FIL2FIL2
USBUSB
qw:pp
VFOVFO
USBUSB
USBUSB
USBUSB
FIL2FIL2
wq.wop.pp
14.100.0014.100.00
14.100.0014.100.00
VFOVFO
wq.wop.pp
1
1
SPLITSPLIT
TXTX
ANTANT
1
METERMETER
PoPo
P.AMPP.AMP
1
ATTATT
OFFOFF
SPLITSPLIT
BWBW
2.4k2.4k
SFTSFT
0
FIL2FIL2
USBUSB
qw:pp
TXTX
VFOVFO
USBUSB
USBUSB
USBUSB
FIL2FIL2
wq.wop.pp
14.100.0014.100.00
14.100.0014.100.00
VFOVFO
qr.wpt.pp
1
1
ANTANT
1
METERMETER
PoPo
P.AMPP.AMP
1
ATTATT
OFFOFF
IC-756PROII.qxd 02.1.8 15:51 Page 32
33
5
RECEIVE AND TRANSMIT
Quick split function
When you nd a DX station, an important considera-
tion is how to set the split frequency.
When you push the [SPLIT] switch for 1 sec., split fre-
quency operation is turned ON, the sub readout is
equalized to the main readout frequency and enters
standby for transmit frequency input.
This shortens the time needed to start split frequency
operation.
The quick split function is ON by default. For your
convenience, it can be turned OFF in set mode.
(p. 69) In this case, the [SPLIT] switch does not
equalize the main and sub readout frequencies.
q Suppose you are operating at 21.290 MHz (USB)
in VFO mode.
w Push [SPLIT] for 1 sec.
Split frequency operation is turned ON.
The sub readout is equalized to the main readout fre-
quency.
The sub readout enters standby for transmit frequency
input.
e Rotate the tuning dial to set the transmit fre-
quency; or, input the transmit frequency using the
keypad and [ENT]; or, input a shift frequency using
the keypad and [SPLIT].
The transmit frequency can be monitored while pushing
[XFC] or using dualwatch.
BWBW
2.4k2.4k
SFTSFT
0
FIL2FIL2
USBUSB
VFOVFO
USBUSB
USBUSB
USBUSB
FIL2FIL2
wq.wop.pp
14.100.0014.100.00
14.100.0014.100.00
VFOVFO
wq.eqp.pp
1
1
SPLITSPLIT
TXTX
qw:pp
ANTANT
1
METERMETER
PoPo
P.AMPP.AMP
1
ATTATT
OFFOFF
BWBW
2.4k2.4k
SFTSFT
0
FIL2FIL2
USBUSB
VFOVFO
USBUSB
USBUSB
USBUSB
FIL2FIL2
wq.wop.pp
14.100.0014.100.00
14.100.0014.100.00
VFOVFO
wq.wop.pp
1
1
SPLITSPLIT
TXTX
ANTANT
1
METERMETER
PoPo
P.AMPP.AMP
1
ATTATT
OFFOFF
BWBW
2.4k2.4k
SFTSFT
0
FIL2FIL2
USBUSB
qw:pp
TXTX
VFOVFO
USBUSB
USBUSB
USBUSB
FIL2FIL2
wq.wop.pp
14.100.0014.100.00
14.100.0014.100.00
VFOVFO
qr.wpt.pp
1
1
ANTANT
1
METERMETER
PoPo
P.AMPP.AMP
1
ATTATT
OFFOFF
When you are searching for DX stations and you
suspect that a DX station may say up X kHz for
their receive frequency:
OPERATION 1
q Push [SPLIT] for 1 sec. to standby for split opera-
tion.
w If the DX stations operator says up 10 kHz:
Push [1], [0] then [SPLIT].
Or, rotate the tuning dial.
OPERATION 2
If the DX stations operator says down 5 kHz be-
fore you enter standby for split operation:
Push [F-INP], [], [5] then [SPLIT].
The split function is turned ON and 5 kHz down fre-
quency is entered in the sub readout.
PRACTICAL EXAMPLE
When you receive a pile-up and you want to start
split frequency operation to simplify picking out sta-
tions:
q Push [SPLIT] momentarily and push [CHANGE]
for 1 sec.
The sub readout frequency is equalized to the main
readout frequency and “” appears.
w Rotate the tuning dial to set your receive fre-
quency in the main readout.
e Announce your receive frequency.
r After you catch one of the calling stations call
signs, push and hold the PTT switch to respond.
While pushing [XFC], you can monitor your transmit
frequency.
SPLITSPLIT
PRACTICAL EXAMPLE
IC-756PROII.qxd 02.1.8 15:51 Page 33
34
5
RECEIVE AND TRANSMIT
RIT and
TX
RIT function
The RIT function shifts the receive frequency up to
±9.999 kHz in 1 Hz steps (10 Hz steps when can-
celling the 1 Hz step readout) without moving the
transmit frequency.
See #2 on p. 6 for function description.
q Push the [RIT] switch.
w Rotate the [RIT/TX] control.
e To reset the RIT frequency, push [CLEAR] for
1 sec.
Push [CLEAR] momentarily to reset the RIT frequency
when the quick RIT/TX clear function is ON. (p. 72)
r To cancel the RIT function, push [RIT] again.
•“ disappears.
TX function
The TX function shifts the transmit frequency up to
±9.999 kHz in 1 Hz steps (10 Hz steps when can-
celling the 1 Hz step readout) without moving the re-
ceive frequency.
See #3 on p. 6 for function description.
q Push the [TX] switch.
w Rotate the [RIT/TX] control.
e To reset the TX frequency, push [CLEAR] for
1 sec.
Push [CLEAR] momentarily to reset the RIT frequency
when the quick RIT/TX clear function is ON. (p. 72)
r To cancel the TX function, push [TX] again.
•“ disappears.
∂TX
BWBW
2.4k2.4k
SFTSFT
0
FIL2FIL2
USBUSB
qw:pp
TXTX
USBUSB
qr.qot.pp
14.100.0014.100.00
p.pp
:
TX
1
VFOVFO
ANTANT
1
METERMETER
PoPo
P.AMPP.AMP
1
Reset to
0.00
RIT/TX
Low shift High shift
BWBW
2.4k2.4k
SFTSFT
0
FIL2FIL2
USBUSB
qw:pp
TXTX
USBUSB
qr.qot.pp
14.100.0014.100.00
q.wt
:
TX
1
VFOVFO
ANTANT
1
METERMETER
PoPo
P.AMPP.AMP
1
TX
appears.
RITRIT
BWBW
2.4k2.4k
SFTSFT
0
FIL2FIL2
USBUSB
qw:pp
TXTX
USBUSB
qr.qot.pp
14.100.0014.100.00
p.pp
RIT
1
VFOVFO
ANTANT
1
METERMETER
PoPo
P.AMPP.AMP
1
Reset to
0.00
RIT/TX
Low shift High shift
BWBW
2.4k2.4k
SFTSFT
0
FIL2FIL2
USBUSB
qw:pp
TXTX
USBUSB
qr.qot.pp
14.100.0014.100.00
q.wt
RIT
1
VFOVFO
ANTANT
1
METERMETER
PoPo
P.AMPP.AMP
1
RIT
appears.
When RIT and TX are ON at the same time, the [RIT/TX] control shifts both the
transmit and receive frequencies from the displayed frequency at the same time.
Calculate function
The shift frequency of the RIT or TX function can
be added/subtracted to the displayed frequency.
While displaying the RIT and/or TX shift frequency,
push [RIT] or [TX] for 1 sec.
Practical example
When you nd a DX station on 21.025 MHz/CW and
the station is picking up stations transmitting slightly
up from 21.025 MHz.
q Push [RIT] and [TX] to turn both the RIT and
TX functions ON.
w Rotate [RIT/TX] to nd the DX stations receive
frequency.
e When you nd the DX stations receive frequency,
push [RIT] to turn the RIT function OFF.
Now you can transmit the DX stations receive fre-
quency and receive the DX stations transmit fre-
quency (21.025 MHz).
r Start transmitting while the station is standing by.
BW
BW
2.4k
2.4k
SFT
SFT
0
FIL2
FIL2
USB
USB
qw:pp
TX
TX
USB
USB
qr.qot.pp
14.100.00
14.100.00
p.wt
RIT
BW
BW
2.4k
2.4k
SFT
SFT
0
FIL2
FIL2
USB
USB
qw:pp
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TX
USB
USB
qr.qot.wt
14.100.00
14.100.00
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RIT
1
VFO
VFO
1
VFO
VFO
ANT
ANT
1
METER
METER
Po
Po
P.AMP
P.AMP
1
ANT
ANT
1
METER
METER
Po
Po
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1
Push and hold
RIT
IC-756PROII.qxd 02.1.8 15:51 Page 34
35
5
RECEIVE AND TRANSMIT
Monitor function
The monitor function allows you to monitor your trans-
mit IF signals in any mode through the speaker. Use
this to check voice characteristics while adjusting
SSB transmit tones. (p. 65) The CW sidetone func-
tions regardless of the [MONITOR] switch setting.
q Push [MONITOR].
The indicator lights when the monitor function is ON.
w Push [EXIT/SET] several times to close a multi-
function screen, if necessary.
e Push [EXIT/SET] for 1 sec. then [(F-1)LEVEL] to
enter level set mode.
r Push [(F-1)Y] or [(F-2)Z ] to select the monitor
level item.
t Adjust monitor gain using the tuning dial.
Pushing [(F-3)DEF] sets the selected item to the default
value of the item.
y Push [EXIT/SET] twice to exit level set mode.
Use headphones to prevent feedback.
Set the transmit tone settings to the 0 dB posi-
tions to check the unaltered characteristics of
transmitter or microphone.
BWBW
2.4k2.4k
SFTSFT
0
FIL2FIL2
USBUSB
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TXTX
VFOVFO
USBUSB
USBUSB
USBUSB
FIL2FIL2
qr.qot.pp
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14.100.0014.100.00
14.100.0014.100.00
1
1
VFOVFO
é
è
DEF
LEVEL SET
ANTANT
1
COMPCOMP
OFFOFF
WIDEWIDE
METERMETER
PoPo
P.AMPP.AMP
1
AGCAGC
MIDMID
ATTATT
OFFOFF
VOXVOX
OFFOFF
SSBTX Tone (Bass) 0dB
SSBTX Tone (Treble) 0dB
MonitorLevel 50%
SideTone Level 50%
SideTone Level Limit ON
BeepLevel 50%
BeepLevel Limit ON
[MONITOR] switch
[PHONES]
jack
VOX function
The VOX (Voice-Operated Transmission) function
switches between transmit and receive with your
voice. This function provides an opportunity to input
log entries into your computer, etc., while operating.
Using the VOX function
q Select a phone mode (SSB, AM, FM).
w Push [VOX] to turn the VOX function ON or OFF.
Adjusting the VOX function
q Select a phone mode (SSB, AM, FM).
w Push [VOX] to turn VOX function ON.
e Push [VOX] for 1 sec. to enter VOX set mode.
r Select the VOX gain item using [(F-1)Y] or [(F-
2)Z].
t While speaking into the microphone, rotate the
tuning dial to the point where the transceiver is
continuously transmitting.
y Adjust the VOX delay for a convenient interval be-
fore returning to receive.
- Select the VOX delay item using [(F-1)Y] or [(F-2)Z].
- Rotate the tuning dial.
u If the receive audio from the speaker switches to
transmit, adjust the anti VOX to the point where it
has no effect.
BWBW
2.4k2.4k
SFTSFT
0
FIL2FIL2
USBUSB
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TXTX
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USBUSB
USBUSB
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qr.qot.pp
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14.100.0014.100.00
14.100.0014.100.00
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1
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è
DEF
VOX
ANTANT
1
COMPCOMP
OFFOFF
WIDEWIDE
METERMETER
PoPo
P.AMPP.AMP
1
AGCAGC
MIDMID
ATTATT
OFFOFF
VOXVOX
OFFOFF
VOXGain 50%
Anti-VOX 50%
VOXDelay 0.2s
[VOX] switch in phone modes
IC-756PROII.qxd 02.1.8 15:51 Page 35
36
5
RECEIVE AND TRANSMIT
Meter function
The transceiver has 4 transmit meter functions for
your convenience. Select the desired meter with the
[METER] switch.
Analog transmit meter
Push [METER] to select RF power (Po), SWR, ALC
or compression level (COMP).
In addition, the transceiver can display the multi-func-
tion digital meter in the LCD display, which displays
all transmit meters simultaneously.
Multi-function digital meter
q Push [METER] for 1 sec. to turn the multi-function
digital meter ON or OFF.
w Push [(F-1)P-HOLD] to toggle the peak level hold
function ON or OFF.
•“P-HOLD appears on the window title when the peak
level hold function is turned ON.
P-HOLDP-HOLD
BWBW
2.4k2.4k
SFTSFT
0
FIL2FIL2
USBUSB
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VFOVFO
USBUSB
USBUSB
USBUSB
FIL2FIL2
qr.qot.pp
qr.wpt.pp
14.100.0014.100.00
14.100.0014.100.00
1
1
VFOVFO
.1...3...5...7...9..1...3...5...7...9.....+20+20......+40+40......+60dB+60dB
0∑∑∑∑∑∑∑∑∑∑∑∑∑∑∑∑∑∑∑∑∑∑2525∑∑∑∑∑∑∑∑∑∑∑∑∑∑∑∑∑∑∑50 ∑∑∑∑∑∑∑∑∑∑∑∑∑∑∑∑∑∑∑∑∑∑∑∑∑∑∑∑∑∑∑∑∑∑∑∑∑∑ 100%100%
1 1.51.5 2 2.52.5 3
S
PoPo
ALCALC
COMPCOMP
SWRSWR
P-HOLDP-HOLD MULTI-FUNCTION METERMULTI-FUNCTION METER
ANTANT
1
COMPCOMP
OFFOFF
WIDEWIDE
METERMETER
PoPo
P.AMPP.AMP
1
AGCAGC
MIDMID
ATTATT
OFFOFF
VOXVOX
OFFOFF
0 5 10 15 20 dB
[METER] switch
SWR reading
The SWR meter indicates the SWR over the trans-
mission line in all modes.
q Push [TUNER] to turn the antenna tuner OFF.
w Push [METER] several times to select the Po
meter.
e Push [CW/RTTY] once or twice to select RTTY
mode.
r Push [TRANSMIT].
t Rotate [RF POWER] clockwise past the 12 oclock
position for more than 30 W output power (30%).
y Push [METER] once to select the SWR meter as
the transmit meter.
u Read the SWR on the SWR meter.
The built-in antenna tuner matches the transmitter
to the antenna when the SWR is lower than 3 :1.
SWR
S
COMP
ALC
Po
0
10
10
25 50
100
20
1
0
1. 5
2
3
1
5
9
+20
+40
+60dB
dB
SWR meter
Less than 1.5:1
DISPLAY
MEASUREMENT
INDICATION
Po
Indicates the relative RF output power in %.
SWR
Indicates the SWR over the transmission
line.
ALC
Indicates the ALC level. When the meter
movement shows the input signal level ex-
ceeds the allowable level, the ALC limits
the RF power. In such cases, reduce the
[MIC GAIN] control.
COMP
Indicates the compression level when the
speech compressor is in use.
IC-756PROII.qxd 02.1.8 15:51 Page 36
37
5
RECEIVE AND TRANSMIT
Speech compressor
The RF speech compressor increases average RF
output power, improving signal strength and readabil-
ity in SSB.
Speech compressor
q Select USB or LSB mode.
w Push [COMP] momentarily to turn the speech
compressor ON and OFF.
e Push [COMP] for 1 sec. to toggle between narrow,
middle or wide transmit lter.
Transmit lter width:
NAR 2.0 kHz
MID 2.6 kHz
WIDE 2.9 kHz
Compression level setting
q Select USB or LSB mode.
w Preset the transceiver as follows:
[COMP] function : OFF
[METER] function : ALC
[MIC GAIN] control : Center position
[COMP] control : Center position
[RF POWER] control : Max. counterclockwise
e Transmit at your normal voice level.
r Adjust the [MIC GAIN] control so that the ALC
meter reads within the ALC zone, whether or not
you speak softly or loudly.
t Push [COMP] momentarily to turn the speech
compressor ON.
y Push [METER] once to select the COMP meter.
u Adjust the [COMP] control so that the COMP
meter reads within 10 dB and 20 dB.
When the ALC meter peaks above the ALC zone,
your transmitted voice may be distorted.
[METER] switch
[COMP] switch[MIC GAIN] control
[COMP] control[RF POWER] control
SWR
S
COMP
ALC
Po
0
10
10
25 50
100
20
1
0
1. 5
2
3
1
5
9
+20
+40
+60dB
dB
COMP meter
Preamp
The preamp amplifies received signals in the front
end circuit to improve the S/N ratio and sensitivity.
The transceiver has 2 preamp types.
Push [P.AMP] to select one of 2 receive RF pre-
amps or to bypass them.
•“P. AMP1 activates 10 dB preamp for HF all bands.
•“P. AMP2 activates 16 dB high-gain preamp for
24 MHz band and above.
Regarding the use of the P.AMP 2
(Pre-amplier 2)
The P.AMP 2 is a high gain receive amplier. When
the P.AMP 2 is used during times of strong electric
fields, distortion sometimes results. In such cases,
use the transceiver with the P.AMP 1 or P.AMP
OFF setting.
The P.AMP 2 is most effective when:
Used on bands above 24 MHz and when electric
elds are weak.
Receive sensitivity is insufcient during low gain, or
while using a narrow band antenna (such as small
loop, a Beverage antenna or a short Yagi antenna,
etc.) is used.
[P.AMP] switch
IC-756PROII.qxd 02.1.8 15:51 Page 37
38
5
RECEIVE AND TRANSMIT
Digital voice recorder
The transceiver has a total of 8 memory channels, 4
each for transmit and receive, of digital voice memo-
ries. A maximum message length of 15 sec. can be
recorded in each receive channel, and a total message
length of 90 sec. can be recorded in transmit channels.
Providing a transmission memory is very convenient
for repeated CQ and number transmissions at contest
times, as well as when making consecutive calls in
DXpedition.
Recording a received audio
q Push [EXIT/SET] several times to close a multi-
function screen, if necessary.
w Select the desired mode by pushing [SSB],
[CW/RTTY] or [AM/FM].
e Push [(F-2)VOICE] to call up the voice recorder
screen.
If the transmit voice memory channel (T1T4) appears,
push [(F-5)T/R] to select receive voice memory chan-
nel.
r Push the desired memory channel switch,
[(F-1)R1] [(F-4)R4], for 1 sec. to start recording.
•“REC ashes and the recording timer counts up.
The operating frequency, mode and current time are
programmed as the memory names automatically.
Previously recorded contents are cleared.
t Push the selected memory channel switch,
[(F-1)R1] [(F-4)R4], again to stop recording.
Recording is automatically terminated after 30 min.
IMPORTANT!
Push one of [(F-1)R1][(F-4)R4] to stop record-
ing before, or when 15 sec. has passed from the
start of recording.
The voice recorder memory records the 15 sec.
(max.) of audio before one of [(F-1)R1][(F-
4)R4] is pushed.
For example, when recording 20 sec. of audio,
the rst 5 sec. audio will be over-recorded with
the last 5 sec., so that the total of audio
recorded is 15 sec. only.
y Push [EXIT/SET] twice to exit the voice memory
screen.
Playing the recorded audio
q Push [EXIT/SET] several times to close a multi-
function screen, if necessary.
w Push [(F-2)VOICE] to call up the voice recorder
screen.
If the transmit voice memory channel (T1T4) appears,
push [(F-5)T/R] to select receive voice memory chan-
nel.
e Push the desired memory channel switch,
[(F-1)R1] [(F-4)R4], momentarily to playback.
•“PLAY appears.
r Push the selected memory channel switch,
[(F-1)R1] [(F-4)R4], again to stop playback if de-
sired.
Playback is terminated automatically when all of the
recorded contents in the channel are played, or after
15 sec.
t Push [EXIT/SET] twice to exit the voice memory
screen.
VOICE RECORDERVOICE RECORDER
COMPCOMP
OFFOFF
WIDEWIDE
AGCAGC
MIDMID
VOXVOX
OFFOFF
R1R1
R2R2
R3R3 R4R4
T/RT/R
PLAYPLAY
R1R1 14.195.0014.195.00 USBUSB 10:1010:10 5s5s
R2R2
------
R3R3
------
R4R4
------
RXRX MEMORYMEMORY
R1R1
R2R2
R3R3 R4
T/RT/R
VOICE RECORDERVOICE RECORDER
COMPCOMP
OFFOFF
WIDEWIDE
AGCAGC
MIDMID
VOXVOX
OFFOFF
R1R1 14.100.0014.100.00 USBUSB 15:3015:30 8s8s
R2R2
------
R3R3
------
R4R4 ------
RXRX MEMORYMEMORY
VOICE RECORDERVOICE RECORDER
COMPCOMP
OFFOFF
WIDEWIDE
AGCAGC
MIDMID
VOXVOX
OFFOFF
R1
R2R2
R3R3 R4R4
T/RT/R
RECREC
R1R1 14.195.0014.195.00 USBUSB 10:1010:10 10s10s
R2R2
------
R3R3
------
R4R4
------
RXRX MEMORYMEMORY
R1R1
R2R2
R3R3 R4R4
T/RT/R
VOICE RECORDERVOICE RECORDER
COMPCOMP
OFFOFF
WIDEWIDE
AGCAGC
MIDMID
VOXVOX
OFFOFF
R1R1 14.100.0014.100.00 USBUSB 15:3015:30 8s8s
R2R2
------
R3R3
------
R4R4 ------
RXRX MEMORYMEMORY
IC-756PROII.qxd 02.1.8 15:51 Page 38
39
5
RECEIVE AND TRANSMIT
One-touch voice recording
To record the receiving signal contents immediately,
one-touch voice recording is available.
q Push [REC/PLAY] for 1 sec. while receiving a sig-
nal to start recording.
•“REC ashes.
Records audio into the channel R4.
w Push [REC/PLAY] momentarily to stop recording.
Recording is automatically terminated after 30 min.
IMPORTANT!
Push [REC/PLAY] to stop recording before, or
when 15 sec. has passed from the start of
recording.
One-touch playback
The recorded audio in the channel R4 can be play-
back without selecting the voice memory screen.
q Push [REC/PLAY] to playback.
•“PLAY appears.
Playback the recorded audio in the channel R4.
w Push [REC/PLAY] again to stop playback if de-
sired.
Playback is terminated automatically when all of the
recorded contents in the channel R4 are played, or
after 15 sec.
BWBW
2.4k2.4k
SFTSFT
0
FIL2FIL2
USBUSB
RECREC
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TXTX
VFOVFO
USBUSB
USBUSB
USBUSB
FIL2FIL2
qr.qot.pp
qr.wpt.pp
14.100.0014.100.00
14.100.0014.100.00
1
1
VFOVFO
ANTANT
1
COMPCOMP
OFFOFF
WIDEWIDE
METERMETER
PoPo
P.AMPP.AMP
1
AGCAGC
MIDMID
ATTATT
OFFOFF
VOXVOX
OFFOFF
SCOPESCOPE
VOICEVOICE
MEMORYMEMORY
SCANSCAN
[REC/PLAY] switch
Digital voice recorder (continued)
IC-756PROII.qxd 02.1.8 15:51 Page 39
RECEIVE AND TRANSMIT
5
40
Digital voice recorder (continued)
Recording a message for transmit
To transmit a message using a voice recorder, record
the desired message in advance as described below.
q Push [EXIT/SET] several times to close a multi-
function screen, if necessary.
w Push [(F-2)VOICE] to call up the voice recorder
screen.
e Push [(F-2)MIC REC] to select the voice memory
recording screen.
r Push the desired memory channel switch,
[(F-1)T1] [(F-4)T4], for 1 sec. to start recording.
Speak into the microphone without pushing the [PTT]
switch.
Previously recorded contents are cleared.
t Adjust the [MIC GAIN] control so that the [REC
LEVEL] indicator reads within 100%.
y Push the selected memory channel switch,
[(F-1)T1] [(F-4)T4], again to stop recording.
Recording is automatically terminated when the total
time of recorded messages, T1T4, becomes 90 sec.
u Push [EXIT/SET] twice to exit the voice memory
screen.
Conrming a message for transmit
q Push [EXIT/SET] several times to close a multi-
function screen, if necessary.
w Push [(F-2)VOICE] to call up the voice recorder
screen.
e Push [(F-2)MIC REC] to select the voice memory
recording screen.
r Push the desired memory channel switch,
[(F-1)T1][(F-4)T4], momentarily to start playback
and conrmation.
t Push the selected memory channel switch,
[(F-1)T1] [(F-4)T4], again to stop playback if de-
sired.
y Push [EXIT/SET] twice to exit the voice memory
screen.
Programming a memory name for
transmit
Memory channels can be tagged with alphanumeric
names of up to 20 characters each.
Capital letters, small letters, numerals, some symbols
(! # $ % & ¥ ? " ' ` ^ + /
.,
: ; = < > ( ) [ ] { } | _
_
)
and spaces can be used. (See step t below.)
q Record a message as described at left.
w Call up the voice memory recording screen as de-
scribed in steps q to e at left.
e Push [(F-5)NAME] to enter memory name edit
condition.
A cursor appears and blinks.
r Push [(F-5)T1..T4] several times to select the de-
sired voice memory.
t Input the desired character by rotating the tuning
dial or by pushing the band key for number input.
Push [ABC] or [abc] to toggle capital and small letters.
Push [123] or [etc] to toggle numerals and symbols.
Push [(F-1)] or [(F-2)] for cursor movement.
Push [(F-3)DEL] to delete the selected character.
Push [(F-4)SPACE] to input a space.
Pushing the transceivers keypad, [0][9], can also
enter numerals.
y Push [EXIT/SET] to input and set the name.
The cursor disappears.
u Repeat steps r to y to program another voice
memorys name, if desired.
i Push [EXIT/SET] twice to exit the voice memory
screen.
ABCABC
123123
T4T4 -
-
-
T1T1 10s10s
T3T3
-
-
-
VOICE MIC-RECORDVOICE MIC-RECORD
T2T2 -
-
-
ABCABC
ç
å
DELDEL
SPACESPACE
T1..T4T1..T4
Character
group
keys
Selected
character
VOICE MIC-RECORDVOICE MIC-RECORD
COMPCOMP
OFFOFF
WIDEWIDE
AGCAGC
MIDMID
VOXVOX
OFFOFF
RECREC LEVELLEVEL
0
5050
100100
% % RemainRemain
80s 80s
T1T1
T2T2
T3T3 T4T4
NAMENAME
PLAYPLAY
T1T1 10s10s
T2T2
------
T3T3
------
T4T4 ------
COMPCOMP
OFFOFF
WIDEWIDE
AGCAGC
MIDMID
VOXVOX
OFFOFF
RECREC LEVELLEVEL
0
5050
100100
% % RemainRemain
80s 80s
VOICE MIC-RECORDVOICE MIC-RECORD
T1T1
T2T2
T3T3 T4T4
NAMENAME
RECREC
T1T1 10s10s
T2T2
------
T3T3
------
T4T4
------
VOICE MIC-RECORDVOICE MIC-RECORD
COMPCOMP
OFFOFF
WIDEWIDE
AGCAGC
MIDMID
VOXVOX
OFFOFF
RECREC LEVELLEVEL
0
5050
100100
% % RemainRemain
90s 90s
T1T1
T2T2
T3T3 T4T4
NAMENAME
T1T1 ------
T2T2
------
T3T3
------
T4T4
------
VOICE RECORDERVOICE RECORDER
COMPCOMP
OFFOFF
WIDEWIDE
AGCAGC
MIDMID
VOXVOX
OFFOFF
PLAYPLAY
MIC RECMIC REC
TX LEV.TX LEV.
SETSET
VOICE RECORDER MENUVOICE RECORDER MENU
PLAY PLAY TX Variable TX Variable 4ch (Total 90s) 4ch (Total 90s)
RX 15s Endless RX 15s Endless 4ch (TOT 30m) 4ch (TOT 30m)
MIC REC Mic Record/Record check MIC REC Mic Record/Record check
TX LEV. Recorder Output Adjust TX LEV. Recorder Output Adjust
SET Auto Monitor SET SET Auto Monitor SET
IC-756PROII.qxd 02.1.8 15:51 Page 40
41
5
RECEIVE AND TRANSMIT
Digital voice recorder (continued)
Sending a message for transmit
q Push [EXIT/SET] several times to close a multi-
function screen, if necessary.
w Select a phone mode by pushing [SSB] or
[AM/FM].
e Push [(F-2)VOICE] to call up the voice recorder
screen.
If the receive voice memory channel (R1R4) appears,
push [(F-5)T/R] to select transmit voice memory chan-
nel.
r Push the desired memory channel switch,
[(F-1)T1] [(F-4)T4], momentarily to transmit the
contents.
t Push the selected memory channel switch,
[(F-1)T1] [(F-4)T4], again to stop, if desired.
y Push [EXIT/SET] twice to exit the voice memory
screen.
For your information
When an external keypad is connected to the pin 3
and pin 7 of the [MIC] connecter, the recorded
message, T1T4, can be transmitted without open-
ing the voice recorder set screen.
See page 73 for details.
Transmit monitor function
The monitor function can be automatically turned ON
while transmitting a voice memory message.
q Call up the voice recorder screen as described at
left.
w Push [EXIT/SET] then [(F-5)SET] to select the
voice recorder set screen.
e Rotate the tuning dial to turn the monitor function
ON and OFF.
Push [(F-3)DEF] for 1 sec. to select the default condi-
tion.
r Push [EXIT/SET] to return to the voice recorder
screen.
Transmit level setting
q Call up the voice recorder screen as described at
left.
w Push [(F-3)TX LEV.] to select the voice memory
transmit level set mode screen.
e Push the desired memory channel switch,
[(F-1)T1] [(F-4)T4], momentarily to transmit the
contents.
r Rotate the tuning dial to adjust the transmit voice
level.
Push [(F-5)DEF] to select the default condition.
t Push [EXIT/SET] to return to the voice recorder
screen.
VOICE RECORDERVOICE RECORDER
TXTX_LEVELLEVEL 50%50%
COMPCOMP
OFFOFF
WIDEWIDE
AGCAGC
MIDMID
VOXVOX
OFFOFF
T1T1
T2T2
T3T3 T4T4
DEF
SENDSEND
T1T1 CQCQJA3YUAJA3YUA 10s10s
T2T2
------
T3T3
------
T4T4
------
VOICE RECORDERVOICE RECORDER
TXTX LEVELLEVEL 50%50%
COMPCOMP
OFFOFF
WIDEWIDE
AGCAGC
MIDMID
VOXVOX
OFFOFF
T1T1
T2T2
T3T3 T4T4
DEF
T1T1 CQCQJA3YUAJA3YUA 10s10s
T2T2
------
T3T3
------
T4T4
------
VOICE SET
COMPCOMP
OFFOFF
WIDEWIDE
AGCAGC
MIDMID
VOXVOX
OFFOFF
DEFDEF
AutoAutoMonitorMonitor ONON
VOICE RECORDERVOICE RECORDER
COMPCOMP
OFFOFF
WIDEWIDE
AGCAGC
MIDMID
VOXVOX
OFFOFF
T1T1
T2T2
T3T3 T4T4
T/RT/R
SENDSEND
TXTX MEMORYMEMORY
T1T1 CQ JA3YUACQ JA3YUA 10s10s
T2T2
------
T3T3
------
T4T4
------
VOICE RECORDERVOICE RECORDER
COMPCOMP
OFFOFF
WIDEWIDE
AGCAGC
MIDMID
VOXVOX
OFFOFF
T1T1
T2T2
T3T3 T4T4
T/RT/R
T1T1 CQ JA3YUACQ JA3YUA 10s10s
T2T2
------
T3T3
------
T4T4
------
TXTX MEMORYMEMORY
IC-756PROII.qxd 02.1.8 15:51 Page 41
42
5
RECEIVE AND TRANSMIT
RTTY decoder
The transceiver has an RTTY decoder for Baudot
(mark freq.: 2125 Hz, shift freq.: 170 Hz, 45 bps).
An external terminal unit (TU) or terminal node con-
troller (TNC) is not necessary for receiving a Baudot
signal.
q Push [EXIT/SET] several times to close a multi-
function screen, if necessary.
w Push [CW/RTTY] to select RTTY mode.
e Push [(F-3)DECODE] to turn the RTTY decoder
ON.
RTTY decoder screen appears.
r If the RTTY lter is turned OFF, push [RTTY FIL]
to turn the function ON.
The RTTY decoder does not function when the RTTY
lter is turned OFF.
t Push [(F-1)HOLD] to freeze the current screen.
•“HOLD appears while the function is in use.
y Push [(F-5)WIDE] to toggle the normal or wide
screen space.
u Push [(F-2)CLR] for 1 sec. to clear the displayed
characters.
i Push [EXIT/SET] to exit the RTTY decoder screen.
Setting the decoder threshold level
Adjust the RTTY decoder threshold level if some
characters are displayed when no signal is received.
q Call up the RTTY decoder screen as described at
left.
w Push [(F-4)ADJ] to select the threshold level set-
ting condition.
e Rotate the tuning dial to adjust the RTTY decoder
threshold level.
Push [(F-3)DEF] to select the default condition.
r Push [EXIT/SET] to exit the RTTY decoder screen.
The UnShift On Space (USOS) function and new
line code can be set in the miscellaneous (others)
set mode. (p. 71)
THRESHOLDTHRESHOLD 9 9
ADJADJ
AGCAGC
MIDMID
1/41/4
OFFOFF
RTTYRTTY
FILFIL
ONON
DEFDEF ADJADJ
WIDEWIDE
********RTTYRTTYDecodeDecodeMonitorMonitor********
45bps45bpsBAUDOTBAUDOTMark=2125,Mark=2125,Shift=170Shift=170
UnShiftUnShiftOnOnSpaceSpacesupportsupport (SET-OTHERS)(SET-OTHERS)
NewNewLineLineCodeCodeselectableselectable(SET-OTHERS)(SET-OTHERS)
IfIfRTTY-FILRTTY-FIL isisOFF,OFF, PleasePleaseturnturn ON.ON.
----------------------------------------------------------------------------------------
RTTY DECODERTTY DECODE
SFTSFT
0
qw:pp
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350 350
RTTY DECODERTTY DECODE
VFOVFO
VFOVFO
qr≥qot≥pp
14.100.00
RTTY RTTY FILFIL2
RTTY RTTY FILFIL2
TXTX
AGCAGC
MIDMID
1/41/4
OFFOFF
RTTYRTTY
FILFIL
ONON
METERMETER
PoPo
P.AMPP.AMP
1
ATTATT
OFFOFF
ANTANT
1
HOLDHOLD
CLRCLR
ADJADJ
WIDEWIDE
********RTTYRTTYDecodeDecodeMonitorMonitor********
45bps45bpsBAUDOTBAUDOTMark=2125,Mark=2125,Shift=170Shift=170
UnShiftUnShiftOnOnSpaceSpacesupportsupport (SET-OTHERS)(SET-OTHERS)
NewNewLineLineCodeCodeselectableselectable(SET-OTHERS)(SET-OTHERS)
IfIfRTTY-FILRTTY-FIL isisOFF,OFF, PleasePleaseturnturn ON.ON.
----------------------------------------------------------------------------------------
CQ CQ CQ THIS IS JA3YUA JA3YUA OSAKA JAPANCQ CQ CQ THIS IS JA3YUA JA3YUA OSAKA JAPAN
CQ CQ CQ THIS IS JA3YUA JA3YUA OSAKA JAPANCQ CQ CQ THIS IS JA3YUA JA3YUA OSAKA JAPAN
CQ CQ CQ THIS IS JA3YUA JA3YUA OSAKA JAPANCQ CQ CQ THIS IS JA3YUA JA3YUA OSAKA JAPAN
THRESHOLDTHRESHOLD 9
AGCAGC
MIDMID
1/41/4
OFFOFF
RTTYRTTY
FILFIL
ONON
HOLDHOLD
CLRCLR
ADJADJ
WIDEWIDE
********RTTYRTTYDecodeDecodeMonitorMonitor********
45bps45bpsBAUDOTBAUDOTMark=2125,Mark=2125,Shift=170Shift=170
UnShiftUnShiftOnOnSpaceSpacesupportsupport (SET-OTHERS)(SET-OTHERS)
NewNewLineLineCodeCodeselectableselectable(SET-OTHERS)(SET-OTHERS)
IfIfRTTY-FILRTTY-FIL isisOFF,OFF, PleasePleaseturnturn ON.ON.
----------------------------------------------------------------------------------------
THRESHOLDTHRESHOLD 9
RTTY DECODERTTY DECODE
RTTY tuning meter
The transceiver has an RTTY tuning indicator to be
tuned correctly and easily.
The RTTY tuning meter is automatically displayed
when the RTTY lter is turned ON.
q Push [CW/RTTY] to select RTTY mode.
w Push [RTTY FIL] to activate the RTTY filter and
RTTY tuning meter.
SFTSFT
0
FIL2FIL2
RTTYRTTY
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OFFOFF
ANTANT
1
RTTY tuning meter
IC-756PROII.qxd 02.1.8 15:51 Page 42
43
5
RECEIVE AND TRANSMIT
Electronic CW keyer
The transceiver has an electronic keyer. Keying
speed can be adjusted with [KEY SPEED]. Keying
weight, the ratio of dot :space: dash, can be set from
1:1:2.8 to 1 :1: 4.5 in keyer set mode.
Setting the electronic keyer
q Push [EXIT/SET] several times, if necessary.
w Push [CW/RTTY] to select CW mode.
e Push [KEYER] then [EXIT/SET] to select keyer set
mode.
r Push [(F-4)CW KEY] to select memory keyer set
mode.
t Select the Keyer Repeat Time item using [(F-
1)].
y Rotate the tuning dial to select the memory keyer
repeat interval. See the next page for details.
1, 2, 3, 10 or 30 sec. can be set.
Push [(F-3)DEF] for 1 sec. to select a default value.
u Push [(F-2)] to select the Dot/Dash Ratio item.
i Rotate the tuning dial to select the keying weight.
1: 1: 2.8 to 1: 1: 4.5 can be set.
Check the ratio with side tone in CW mode.
Push [(F-3)DEF] to select a default ratio of 1: 1: 3.0.
o Push [(F-2)] to select the Rise Time item.
!0 Rotate the tuning dial to select the time which the
output power becomes the set transmit power.
!1 Push [(F-2)] to select the Paddle Polarity item.
!2 Rotate the tuning dial to select the paddle polarity
between normal and reverse polarity.
!3 Push [(F-2)] to select the Keyer Type item.
!4 Rotate the tuning dial to set the electronic keyer
function to electronic keyer, bug-key or straight key
(electronic keyer OFF).
Bug-key setting can be substituted for a bug-key while
operating with a paddle. Set to Straight for a real bug-
key, or connect the bug-key to [KEY] on the rear panel.
!5 Push [(F-2)] to select the MIC Up/Down Keyer
item.
!6 Rotate the tuning dial to turn the substitute paddle
function ON or OFF.
The up/down keys of the microphone can be substi-
tuted for a paddle. When ON is selected, they do not
function as up/down keys in all modes.
!7 Push [EXIT/SET] to exit keyer set mode.
KEYING WEIGHT EXAMPLE: Morse code K
DASH
Weight setting:
1:1:3 (default)
Weight setting:
Adjusted
DASH
DOT
(Fixed*)
Adjustable range SPACE (Fixed*)
*SPACE and DOT length can be adjusted with [KEY
SPEED] only.
KEYER CW-KEYKEYER CW-KEY
é
è
AGCAGC
MIDMID
1/41/4
OFFOFF
BK-INBK-IN
OFFOFF
DEFDEF
KeyerKeyer RepeatRepeat TimeTime 2s 2s
Dot/DashDot/Dash RatioRatio 1:1:3.01:1:3.0
RiseRiseTimeTime 4ms4ms
PaddlePaddlePolarityPolarity NormalNormal
KeyerKeyer TypeType ELEC-KEYELEC-KEY
MICMIC Up/DownUp/Down KeyerKeyer OFFOFF
KEYER CW-KEYKEYER CW-KEY
é
è
AGCAGC
MIDMID
1/41/4
OFFOFF
BK-INBK-IN
OFFOFF
DEFDEF
KeyerKeyer RepeatRepeat TimeTime 2s 2s
Dot/DashDot/Dash RatioRatio 1:1:3.01:1:3.0
RiseRiseTimeTime 4ms4ms
PaddlePaddlePolarityPolarity NormalNormal
KeyerKeyer TypeType ELEC-KEYELEC-KEY
MICMIC Up/DownUp/Down KeyerKeyer OFFOFF
DEFDEF
KEYER CW-KEYKEYER CW-KEY
é
è
AGCAGC
MIDMID
1/41/4
OFFOFF
BK-INBK-IN
OFFOFF
KeyerKeyer RepeatRepeat TimeTime 2s 2s
Dot/DashDot/Dash RatioRatio 1:1:3.01:1:3.0
RiseRiseTimeTime 4ms4ms
PaddlePaddlePolarityPolarity NormalNormal
KeyerKeyer TypeType ELEC-KEYELEC-KEY
MICMIC Up/DownUp/Down KeyerKeyer OFFOFF
DEFDEF
KEYER CW-KEYKEYER CW-KEY
é
è
AGCAGC
MIDMID
1/41/4
OFFOFF
BK-INBK-IN
OFFOFF
KeyerKeyer RepeatRepeat TimeTime 2s 2s
Dot/DashDot/Dash RatioRatio 1:1:3.01:1:3.0
RiseRiseTimeTime 4ms4ms
PaddlePaddlePolarityPolarity NormalNormal
KeyerKeyer TypeType ELEC-KEYELEC-KEY
MICMIC Up/DownUp/Down KeyerKeyer OFFOFF
DEFDEF
KEYER CW-KEYKEYER CW-KEY
é
è
KeyerKeyer RepeatRepeat TimeTime 2s 2s
Dot/DashDot/Dash RatioRatio 1:1:3.01:1:3.0
RiseRiseTimeTime 4ms4ms
PaddlePaddlePolarityPolarity NormalNormal
KeyerKeyer TypeType ELEC-KEYELEC-KEY
MICMIC Up/DownUp/Down KeyerKeyer OFFOFF
AGCAGC
MIDMID
1/41/4
OFFOFF
BK-INBK-IN
OFFOFF
BWBW
500500
SFTSFT
0
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MEMORY KEYERMEMORY KEYER
BPFBPF
AGCAGC
MIDMID
1/41/4
OFFOFF
BK-INBK-IN
OFFOFF
METERMETER
PoPo
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SENDSEND
EDITEDIT
001001 CW KEYCW KEY
MEMORY KEYER MENUMEMORY KEYER MENU
SENDSENDMax.55Max.55 CharactersCharactersx 4ch4ch
EDITEDITMemoryMemory EditorEditor
001001001001StyleStyle ContestContestNumberNumber
CWCWKEYKEY Memo-key,Elec-key,CWMemo-key,Elec-key,CWWaveWaveFormForm SetSet
[KEYER] switch[CW/RTTY] switch
IC-756PROII.qxd 02.1.8 15:51 Page 43
44
5
RECEIVE AND TRANSMIT
Memory keyer
The memory keyer memorizes and can re-transmit 4
CW key codes for often-used CW sentences, antenna
types, etc. Total capacity of the memory keyer is 55
characters in each memory channel.
Programming the memory keyer
q Push [EXIT/SET] several times, if necessary.
w Push [CW/RTTY] to select CW mode.
e Push [(F-3)KEYER] then [EXIT/SET] to select
keyer set mode.
r Push [(F-2)EDIT] to enter the keyer edit screen.
t Push [(F-5)M1..M4] several times to select the de-
sired keyer memory channel.
y Select the desired character group by pushing the
character group keys ([ABC] or [abc], [123] or
[etc]) several times.
u Select the desired character by rotating the tuning
dial or by pushing the band key for number input.
Push [(F-1)] or [(F-2)] for cursor movement.
Push [(F-3)DEL] to delete the selected character.
Push [(F-4)SPACE] to input a space.
•“* is for contact numbers and can be input for the
count up trigger channel (“” appears).
i Repeat step u until the desired contents are input.
o Push [(F-5)M1..M4] to select the next memory
channel and repeat step u for character input, if
desired.
!0 Push [EXIT/SET] twice to exit the keyer set mode.
Transmitting memory keyer contents
q Push [EXIT/SET] several times, if necessary.
w Push [CW/RTTY] to select CW mode.
e Push [(F-3)KEYER] to select the memory keyer
screen.
r Push [(F-1)M1] [(F-4)M4] momentarily to trans-
mit the contents one time; push these keys for 1
sec. to transmit the contents repeatedly.
•“M1”–“M4 are highlighted while transmitting.
•“ appears while transmitting repeatedly.
Set the repeat interval of the memory keyer to 1, 2, 3,
10 or 30 sec. See the previous page for keyer set mode.
To count down the contact number, push [(F-5)1].
t Push [EXIT/SET] twice to exit the memory keyer
screen.
For your information
When an external keypad is connected to the pin 3
and pin 7 of the [MIC] connecter, the programmed
contents, M1M4, can be transmitted without open-
ing the memory keyer screen.
See page 73 for details.
Setting the contact (serial) number
Contact number can be automatically transmitted
from one of the memory keyer channels. The Morse
cut numbers can be used as the contact numbers.
The maximum number for contact numbers is 9999.
q Push [EXIT/SET] several times, if necessary.
w Push [CW/RTTY] to select CW mode.
e Push [(F-3)KEYER] then [EXIT/SET] to select
keyer set mode.
r Push [(F-3)001] to enter contact number screen.
t Rotate the tuning dial to select the cut number
type, if desired.
•“Normal does not use Morse cut numbers.
•“190 ANO sets 1 as A, 9 as N and Ø as O.
•“190 ANT sets 1 as A, 9 as N and Ø as T.
•“90 NO sets 9 as N and Ø as O.
•“90 NT sets 9 as N and Ø as T.
y
Push [(F-2)] to select the Count Up Trigger item.
u Rotate the tuning dial to select the desired mem-
ory channel for contest numbers.
i Push [(F-2)] to select the Present Number item.
o Push [(F-3)001CLR] for 1 sec. to clear the contact
number.
!0 Push [EXIT/SET] twice to exit the keyer set mode.
KEYER 001KEYER 001
NumberNumberStyleStyle
NormalNormal
CounCountUPUPTriggerTrigger M1M1
PresentPresentNumberNumber 001001
AGCAGC
MIDMID
1/41/4
OFFOFF
BK-INBK-IN
OFFOFF
é
è
001CLR001CLR
KEYER 001KEYER 001
NumberNumberStyleStyle
NormalNormal
CounCountUPUPTriggerTrigger M1M1
PresentPresentNumberNumber 001001
AGCAGC
MIDMID
1/41/4
OFFOFF
BK-INBK-IN
OFFOFF
é
è
DEFDEF
KEYER 001KEYER 001
NumberNumberStyleStyle
NormalNormal
CounCountUPUPTriggerTrigger M1M1
PresentPresentNumberNumber 001001
AGCAGC
MIDMID
1/41/4
OFFOFF
BK-INBK-IN
OFFOFF
é
è
DEFDEF
MEMORY KEYERMEMORY KEYER
M1M1
M2M2
M3M3
M4M4
CQCQ TESTTEST CQCQ TESTTEST DEDE ICOMICOM ICOMICOM
TESTTEST
QRZ?QRZ?
CFMCFM TUTU
URUR 5NN5NN001001 BKBK
AGCAGC
MIDMID
1/41/4
OFFOFF
BK-INBK-IN
OFFOFF
M1M1
M2M2
M3M3 M4M4
-1-1
ç
å
DELDEL
SPACESPACE M1..M4M1..M4
KEYER EDITKEYER EDIT
M1M1
M2M2
M3M3
M4M4
CQCQ TESTTEST CQCQ TESTTEST DEDE ICOMICOM ICOMICOM
TESTTEST
QRZ?QRZ?
CFMCFM TUTU
URUR 5NN5NN001001 BKBK
ABCABC
ABCABC
123123
Character
group
keys
Selected
character
Memory ch
select
IC-756PROII.qxd 02.1.8 15:51 Page 44
45
5
RECEIVE AND TRANSMIT
Spectrum scope screen
This function allows you to display the relative
strengths of signals around the center frequency. The
span can be set to ±12.5 kHz, ±25 kHz, ±50 kHz and
±100 kHz. Ideal for monitoring band conditions in an
instant.
q Push [EXIT/SET] several times to close a multi-
function screen, if necessary.
w Push [(F-1)SCOPE] to select the scope screen.
e Push [(F-1)SPAN] several times to select the
scope span.
r Push [(F-2)ATT] several times to activate an atten-
uator or turn the attenuator OFF.
10, 20 and 30 dB attenuators are available.
t Push [(F-3)MARKER] several times to select the
marker (sub readout or transmit frequency) or turn
the marker OFF.
•“TX MARKER displays the marker at the transmit fre-
quency.
•“SUB MARKER displays the marker at the sub readout
frequency.
y Push [(F-4)HOLD] to freeze the current spectrum
waveform.
•“HOLD appears while the function is in use.
u Push [EXIT/SET] to exit the scope screen.
Spectrum scope during transmitting
The spectrum scope shows the transmit signal wave-
form while transmitting. This can be deactivated if de-
sired.
When OFF is selected, the spectrum scope holds
the received waveform while transmitting and does
not show the transmit waveform.
q Call up the scope screen as described at left.
w Push [(F-5)SET] to select the spectrum scope set
mode.
e Push [(F-1)] to select the Scope during Tx item.
r Rotate the tuning dial to display the spectrum
scope while transmitting or not.
t Push [EXIT/SET] to exit spectrum scope set mode.
Maximum level hold function
The spectrum scope shows the peak level holding
function. Peak levels are displayed in the background
of the current spectrum in a different color until the re-
ceive frequency changes. This can be deactivated if
desired.
q Call up the scope screen as described at left.
w Push [(F-5)SET] to select the spectrum scope set
mode.
e Push [(F-2)] to select the Max Hold item.
r Rotate the tuning dial to turn the peak level holding
function ON or OFF.
t Push [EXIT/SET] to exit spectrum scope set mode.
If a strong signal is received, a ghost waveform
may appear. Push [(F-2)ATT] several times to acti-
vate the spectrum scope attenuator in this case.
DEFDEF
é
è
VOXVOX
OFFOFF
COMPCOMP
OFFOFF
WIDEWIDE
AGCAGC
MIDMID
ScopeScope duringduring TxTx ONON
MaxMax HoldHold ONON
SCOPESCOPE SETSET
DEFDEF
é
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OFFOFF
COMPCOMP
OFFOFF
WIDEWIDE
AGCAGC
MIDMID
ScopeScope duringduring TxTx ONON
MaxMax HoldHold ONON
SCOPESCOPE SETSET
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GridGrid
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SPECTRUM SCOPESPECTRUM SCOPE
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SETSET
SPANSPAN
ATTATT
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Appears when the
marker is out of range.
Sub readout
or TX marker
Appears when the
marker is out of range.
ANTANT
1
METERMETER
PoPo
ATTATT
OFFOFF
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OFFOFF
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SETSET
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SPANSPAN
ATTATT
MARKERMARKER
IC-756PROII.qxd 02.1.8 15:51 Page 45
46
5
RECEIVE AND TRANSMIT
Automatic antenna selection
The transceiver covers 0.160 MHz over 10 bands.
Each band key has a band memory which can mem-
orize a selected antenna (ANT1, ANT2, ANT1/RX an-
tenna and ANT2/RX antenna). When you change the
operating frequency beyond a band, the previously
used antenna is automatically selected for the new
band. This function is convenient when you use 2 or 3
antennas.
To use the band memory, enter set mode and conrm
that Auto is selected as the [ANT] switch item.
(p. 70)
When OFF is selected, the [ANT] switch does not function
and [ANT1] is always selected.
When Manual is selected, the [ANT] switch functions,
however, band memory does not function. In this case,
you must select an antenna manually.
When Auto is selected (default setting), the antenna
tuner ON/OFF condition is also memorized in the band
memory.
When Auto or Manual is selected, the antenna tuner
ON/OFF condition is consistent with the [ANT] switch.
Antenna switch selection example
Under the following condition, Auto should be se-
lected as the [ANT] switch set mode item.
- When you use 2 antennas.
Under the following conditions, Manual should be
selected as the [ANT] switch set mode item.
- When using 1 antenna.
- When using an external antenna selector for more
than 3 antennas (except for receive antenna).
- When using an external antenna tuner.
DEFDEF WIDEWIDE
é
è
VOXVOX
OFFOFF
COMPCOMP
OFFOFF
WIDEWIDE
AGCAGC
MIDMID
FMFMSPLITSPLIT Offset(HF)Offset(HF) -0.100MHz-0.100MHz
FMFMSPLITSPLIT Offset(50M)Offset(50M) -0.500MHz-0.500MHz
SPLITSPLIT LOCKLOCK OFFOFF
TunerTuner (Auto(Auto Start)Start) OFFOFF
TunerTuner (PTT(PTTStart)Start) OFFOFF
[ANT][ANT] SwitchSwitch AutoAuto
RTTYRTTYMark FrequencyMark Frequency 21252125
OTHERSOTHERSSETSET
Dial lock function
The dial lock function prevents changes by accidental
movement of the tuning dial. The lock function elec-
tronically locks the dial.
Push [LOCK/SPEECH] to toggle the dial lock func-
tion ON and OFF.
The [LOCK] indicator lights when the dial lock function
is in use.
[LOCK/SPEECH] switch
[LOCK] indicator
IC-756PROII.qxd 02.1.8 15:51 Page 46
47
5
RECEIVE AND TRANSMIT
Repeater operation
A repeater amplies received signals and retransmits
them at a different frequency. When using a repeater,
the transmit frequency is shifted from the receive fre-
quency by an offset frequency. A repeater can be ac-
cessed using split frequency operation with the shift
frequency set to the repeaters offset frequency.
For accessing a repeater which requires a repeater
tone, set the repeater tone frequency in set mode
as described below.
q Set the offset frequencies (HF, 50 MHz) and turn
ON the quick split function in set mode (others) in
advance. (p. 69)
w Push [VFO/MEMO] to select VFO mode.
e Push the desired band key.
r Push [AM/FM] several times to select FM mode.
t Set the receive frequency (repeater output fre-
quency).
y Push [SPLIT] for 1 sec. to start repeater operation.
Repeater tone is turned ON automatically.
Shifted transmit frequency and TX appear in the sub
readout.
The transmit frequency can be monitored while pushing
[XFC] or using dualwatch.
u Push and hold [PTT] to transmit; release [PTT] to
receive.
i To return to simplex, push [SPLIT] momentarily to
clear the sub display.
Setting the repeater tone
Some repeaters require subaudible tones to be ac-
cessed. Subaudible tones are superimposed over
your normal signal and must be set in advance. The
transceiver has 50 tones from 67.0 Hz to 254.1 Hz.
Each memory channel can store an independent set-
ting.
q Select FM mode.
w Push [TONE] for 1 sec. to enter tone set mode.
e Push [(F-1)] to select the repeater tone item.
r Rotate the tuning dial to select the desired re-
peater tone frequency.
t Push [EXIT/SET] to exit tone set mode.
Available repeater tones (Unit: Hz)
Store repeater tone frequencies and ON/OFF settings
in memory channels for easy recall.
CONVENIENT
T-SCANT-SCAN
é
è
DEFDEF
TONE FREQUENCYTONE FREQUENCY
88.5Hz88.5Hz
88.5Hz88.5HzT-SQL TONET-SQL TONE
REPEATER TONEREPEATER TONE
TONETONE
AGCAGC
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matically turned ON.
Shifted frequency appears.
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1
VFOVFO
ANTANT
1
METERMETER
PoPo
ATTATT
OFFOFF
P.AMPP.AMP
1
67.0
69.3
71.9
74.4
77.0
79.7
82.5
085.4
088.5
091.5
094.8
097.4
100.0
103.5
107.2
110.9
114.8
118.8
123.0
127.3
131.8
136.5
141.3
146.2
151.4
156.7
159.8
162.2
165.5
167.9
171.3
173.8
177.3
179.9
183.5
186.2
189.9
192.8
196.6
199.5
203.5
206.5
210.7
218.1
225.7
229.1
233.6
241.8
250.3
254.1
IC-756PROII.qxd 02.1.8 15:51 Page 47
48
5
RECEIVE AND TRANSMIT
Tone squelch operation
The tone squelch opens only when receiving a signal
containing a matching subaudible tone. You can
silently wait for calls from group members using the
same tone.
q Push [VFO/MEMO] to select VFO mode.
w Push the desired band key.
e Push [AM/FM] several times to select FM mode.
r Push [TONE] several times until TSQL appears
in the function display.
t When the received signal includes a matching
tone, squelch opens and the signal can be heard.
When the received signals tone does not match, tone
squelch does not open, however, the S-indicator shows
signal strength.
To open the squelch manually, push [XFC].
y Operate the transceiver in the normal way.
u To cancel the tone squelch, push [TONE] to clear
TSQL.
Setting the tone squelch tone
The transceiver has 50 tones from 67.0 Hz to
254.1 Hz.
q Select FM mode.
w Push [TONE] for 1 sec. to enter tone set mode.
e Push [(F-2)] to select the tone squelch tone item.
r Rotate the tuning dial to select the desired tone
squelch frequency.
t Push [EXIT/SET] to exit tone set mode.
Available tone squelch tones (Unit: Hz)
Store tone squelch frequencies and ON/OFF settings
in memory channels for easy recall.
CONVENIENT
T-SCANT-SCAN
é
è
DEFDEF
TONE FREQUENCYTONE FREQUENCY
88.5Hz88.5Hz
88.5Hz88.5HzT-SQL TONET-SQL TONE
REPEATER TONEREPEATER TONE
TONETONE
AGCAGC
FASTFAST
VOXVOX
OFFOFF
BWBW
15k15k
SFTSFT
0
FIL2FIL2
FMFM
qw:pp
VFOVFO
FMFM
USBUSB
USBUSB
FIL2FIL2
wo.yip.pp
wo.tip.pp
14.100.0014.100.00
14.100.0014.100.00
1
1
VFOVFO
TSQLTSQL
TSQLTSQL
TXTX
ANTANT
1
METERMETER
PoPo
ATTATT
OFFOFF
P.AMPP.AMP
1
BWBW
2.4k2.4k
SFTSFT
0
FIL2FIL2
USBUSB
qw:pp
TXTX
VFOVFO
USBUSB
USBUSB
USBUSB
FIL2FIL2
wq.wop.pp
qr.wpt.pp
14.100.0014.100.00
14.100.0014.100.00
1
1
VFOVFO
ANTANT
1
METERMETER
PoPo
ATTATT
OFFOFF
P.AMPP.AMP
1
67.0
69.3
71.9
74.4
77.0
79.7
82.5
085.4
088.5
091.5
094.8
097.4
100.0
103.5
107.2
110.9
114.8
118.8
123.0
127.3
131.8
136.5
141.3
146.2
151.4
156.7
159.8
162.2
165.5
167.9
171.3
173.8
177.3
179.9
183.5
186.2
189.9
192.8
196.6
199.5
203.5
206.5
210.7
218.1
225.7
229.1
233.6
241.8
250.3
254.1
IC-756PROII.qxd 02.1.8 15:51 Page 48
49
5
RECEIVE AND TRANSMIT
Antenna tuner operation
The internal automatic antenna tuner matches the
transceiver to the connected antenna automatically.
Once the tuner matches an antenna, the variable ca-
pacitor angles are memorized as a preset point for
each frequency range (100 kHz steps). Therefore,
when you change the frequency range, the variable
capacitors are automatically preset to the memorized
point.
CAUTION:
NEVER transmit with the tuner ON
when no antenna is connected. This will damage
the transceiver. Be careful of the antenna selection.
TUNER OPERATION
Push the [TUNER] switch to turn the internal an-
tenna tuner ON. The antenna is tuned automati-
cally when the antenna SWR is higher than 1.5:1.
When the tuner is ON, the [TUNER] switch lights.
[TUNER] switch
MANUAL TUNING
During SSB operation at low voice levels, the internal
tuner may not be tuned correctly. In such cases, man-
ual tuning is helpful.
Push [TUNER] for 1 sec., to start manual tuning.
A side tone is emitted and [TUNER] blinks while tuning.
If the tuner cannot reduce the SWR to less than 1.5:1
after 20 sec. of tuning, the [TUNER] switch indicator
goes out.
Push [TUNER] for 1 sec.
AUTOMATIC TUNER START (HF bands only)
If you want to deactivate the tuner under conditions
of VSWR 1.5:1 or less, use the auto tuner start func-
tion and turn the tuner OFF. This function activates
the tuner automatically when the SWR exceeds 1.5:1.
This function is turned ON in set mode. (p. 70).
PTT TUNER START
The tuner is always tuned when the PTT is pushed
after the frequency is changed (more than 1% from
last-tuned frequency). This function removes the
push and hold [TUNER] operation and activates for
the rst transmission on a new frequency.
This function is turned ON in set mode. (p. 70).
NOTES:
If the tuner cannot tune the antenna
Check the following and try again:
the [ANT] connector selection.
the antenna connection and feedline.
the unaltered antenna SWR. (Less than 3:1 for HF bands;
Less than 2.5:1 for 50 MHz band)
the transmit power. (8 W for HF bands; 15 W for 50 MHz
band)
the power source voltage/capacity.
If the tuner cannot reduce the SWR to less than 1.5:1
after checking the above, perform the following:
repeat manual tuning several times.
tune with a 50 dummy load and re-tune the antenna.
turn power OFF and ON.
adjust the antenna cable length.
(This is effective for higher frequencies in some cases.)
Tuning a narrow bandwidth antenna
Some antennas, especially for low bands, have a nar-
row bandwidth. These antennas may not be tuned at
the edge of their bandwidth, therefore, tune such an
antenna as follows:
Suppose you have an antenna which has an SWR of
1.5:1 at 3.55 MHz and an SWR of 3:1 at 3.8 MHz.
q Push [TUNER] to turn the antenna tuner ON.
w Select CW mode.
e Turn OFF the break-in function. (p. 5)
r Push [TRANSMIT] to set to the transmit condition.
t Set 3.55 MHz and key down.
y Set 3.80 MHz and key down.
u Push [TRANSMIT] to return to the receive condition.
IC-756PROII.qxd 02.1.8 15:51 Page 49
50
5
RECEIVE AND TRANSMIT
Optional external tuner operation
AH-4/AH-3 HF AUTOMATIC ANTENNA
TUNER
The AH-4 matches the IC-756PROII to a long wire
antenna more than 7 m/23 ft long (3.5 MHz and above).
The AH-3 matches the IC-756PROII to a long wire
antenna more than 3 m/10 ft long (3.5 MHz and above)
or more than 12 m/40 ft long (1.8 MHz and above)
.
See p. 19 for the transceiver and AH-4/AH-3 connection.
See the AH-4/AH-3 instruction manual for AH-4/AH-3 in-
stallation and antenna connection details.
AH-4/AH-3 setting example:
RWARNING: HIGH VOLTAGE!
NEVER touch the antenna element while tuning
or transmitting.
NEVER operate the AH-4/AH-3 without an antenna
wire. The tuner and transceiver will be damaged.
NEVER operate the AH-4/AH-3 when it is not
grounded.
Transmitting before tuning may damage the trans-
ceiver. Note that the AH-4/AH-3 cannot tune when
using a
1
2 λ long wire or multiple of the operating fre-
quency.
When connecting the AH-4/AH-3, the antenna
connector assignments are [ANT2] for the internal
tuner and [ANT1] for the AH-4/AH-3. The antenna
indicator in the LCD displays ANT1(EXT) when
the AH-4/AH-3 is connected and selected.
The AH-3 can be used for HF bands only. It can-
not be used for the 50 MHz band.
AH-4/AH-3 operation
Tuning is required for each frequency. Be sure to
re-tune the antenna before transmitting when you
change the frequencyeven slightly.
q Set the desired frequency in an HF or 50 MHz
band for use with the AH-4. Set the desired fre-
quency in an HF band for use with the AH-3.
The AH-4/AH-3 will not operate on frequencies outside
of ham bands.
w Push [TUNER] for 1 sec.
The [TUNER] light blinks while tuning.
e The [TUNER] light lights constantly when tuning is
complete.
When the connected wire cannot be tuned, the
[TUNER] light goes out and the AH-4/AH-3 is by-
passed. At that point the antenna wire connection rout
is to the transceiver directly, and not via the AH-4/AH-3
antenna tuner.
r
To bypass the AH-4/AH-3 manually, push [TUNER].
[TUNER] switch
For mobile operation
For outdoor operation
Long wire
Optional AH-2b
antenna element
ANTENNA TUNER OF THE IC-PW1
When using an external antenna tuner such as the
IC-PW1s tuner, tune with the external antenna tuner,
while the internal tuner is turned OFF. After tuning is
completed, turn the internal tuner ON. Otherwise,
both tuners tune simultaneously and correct tuning
may not be obtained.
See the instruction manual included with each an-
tenna tuner for their respective operations.
IC-756PROII.qxd 02.1.8 15:51 Page 50
6
51
MEMORY OPERATION
Memory channels
The transceiver has 101 memory channels. The mem-
ory mode is very useful for quickly changing to often-
used frequencies.
All 101 memory channels are tuneable which means
the programmed frequency can be tuned temporarily
with the tuning dial, etc. in memory mode.
Memory channel selection
Using the [
YY
] or [
ZZ
] keys
q Push [VFO/MEMO] to select memory mode.
w Push [Y]/[Z] several times to select the desired
memory channel.
Push and hold [Y]/[Z] for continuous selection.
[UP] and [DN] on the microphone can also be used.
e To return to VFO mode, push [VFO/MEMO] again.
Using the keypad
q Push [VFO/MEMO] to select memory mode.
w Push [F-INP].
e Push the desired memory channel number using
the keypad.
Enter 100 or 101 to select scan edge channel P1 or P2,
respectively.
r Push [Y] or [Z] to select the desired memory
channel.
SFT
SFT
0
FIL2
FIL2
CW
CW
qw:pp
TX
TX
USB
USB
qr.qot.pp
14.100.00
14.100.00
BPF
BPF
1
VFO
VFO
BW
BW
500
500
SFT
SFT
0
FIL2
FIL2
USB
USB
qw:pp
TX
TX
CW
CW
qr.qpp.pp
14.195.00
14.195.00
VFO
VFO
1
BW
BW
2.4k
2.4k
SFT
SFT
0
FIL2
FIL2
USB
USB
qw:pp
TX
TX
wr.oyp.pp
12
12
BW
BW
2.4k
2.4k
CW
CW
14.195.00
14.195.00
VFO
VFO
ANT
ANT
1
METER
METER
Po
Po
ANT
ANT
1
METER
METER
Po
Po
ANT
ANT
1
METER
METER
Po
Po
VFO/
MEMO
or
F-INP
ENT
SFT
SFT
0
FIL2
FIL2
USB
USB
qw:pp
TX
TX
CW
CW
qr.qpp.pp
14.195.00
14.195.00
VFO
VFO
1
BW
BW
2.4k
2.4k
SFT
SFT
0
FIL2
FIL2
USB
USB
TX
TX
CW
CW
.qpp.qw
14.195.00
14.195.00
VFO
VFO
1
BW
BW
2.4k
2.4k
SFT
SFT
0
FIL2
FIL2
USB
USB
qw:pp
TX
TX
wr.oyp.pp
12
12
BW
BW
2.4k
2.4k
CW
CW
14.195.00
14.195.00
VFO
VFO
ANT
ANT
1
METER
METER
Po
Po
ANT
ANT
1
METER
METER
Po
Po
ANT
ANT
1
METER
METER
Po
Po
1
2
or
then
MEMORY
MEMORY
TRANSFER OVER-
CHANNEL
CHANNEL CAPABILITY
TO VFO WRITING
CLEAR
NUMBER
Regular memory
199
One frequency and one mode
Yes Yes Yes
channels in each memory channel.
Scan edge
One frequency and one mode in
memory P1, P2 each memory channel as scan Yes Yes No
channels edges for programmed scan.
IC-756PROII.qxd 02.1.8 15:51 Page 51
52
6
MEMORY OPERATION
Memory channel screen
The memory channel screen simultaneously shows 7
memory channels and their programmed contents. 13
memory channels can be displayed in the wide mem-
ory channel screen.
You can select a desired memory channel from the
memory channel screen.
Selecting a memory channel using the
memory channel screen
q Push [EXIT/SET] several times to close a multi-
function screen, if necessary.
w Push [(F-4)MEMORY] to select the memory chan-
nel screen.
[(F-5)WIDE] switches the standard and wide screens.
e Rotate the tuning dial while pushing [(F-2)SET] to
select the desired memory channel.
[Y] and [Z] can also be used.
r Push [EXIT/SET] to exit the memory channel
screen.
Conrming programmed memory
channels
q Select the memory channel screen as described
above.
w Rotate the tuning dial while pushing [(F-1)ROLL]
to scroll the screen.
e Push [(F-2)SET] to select the highlighted memory
channel, if desired.
r Push [EXIT/SET] to exit the memory channel
screen.
Setting a memory channel as a select
memory
Select memory channels are used for select memory
scan. Select memory scan repeatedly scans the se-
lect memory channels only. This is useful to speed up
the memory scan interval. Of course, select memory
channels are also scanned during normal memory
scan.
q Select the memory channel screen as described at
left.
w Rotate the tuning dial while pushing [(F-1)ROLL]
or [(F-2)SET] to select the desired memory chan-
nel.
[Y] and [Z] can also be used.
e Push [(F-3)SELECT] to set the memory channel
as a select memory or not.
r Repeat steps w to e to program another memory
channel as a select memory channel, if desired.
t Push [EXIT/SET] to exit the memory channel
screen.
Setting select memory channels is also possible in
the scan screen.
ROLLROLL
SETSET
SELECTSELECT
NAMENAME
WIDEWIDE
SFTSFT
0
FIL2FIL2
USBUSB
qw:pp
TXTX
VFOVFO
USBUSB
USBUSB
USBUSB
FIL2FIL2
qr.qot.pp
qr.wpt.pp
14.100.0014.100.00
14.100.0014.100.00
1
1
ß
ß
VFOVFO
BWBW
2.4k2.4k
9999 --.---.----.---.-- ------------ ------
P1P1 0.500.000.500.00 LSBLSB FL2FL2 SCAN EDGESCAN EDGE
P2P2 29.999.9929.999.99 USBUSB FL2FL2 SCAN EDGESCAN EDGE
1 ß 14.100.0014.100.00 USBUSB FL2FL2
2 --.---.----.---.-- ------------ ------
3 --.---.----.---.-- ------------ ------
4 --.---.----.---.-- ------------ ------
MEMORYMEMORY
ANTANT
1
COMPCOMP
OFFOFF
WIDEWIDE
METERMETER
PoPo
P.AMPP.AMP
1
AGCAGC
MIDMID
ATTATT
OFFOFF
VOXVOX
OFFOFF
ß appears for select memory channel.
ROLLROLL
SETSET
SELECTSELECT
NAMENAME
WIDEWIDE
9999 --.---.----.---.-- ------------ ------
P1P1 0.500.000.500.00 LSBLSB FL2FL2 SCAN EDGESCAN EDGE
P2P2 29.999.9929.999.99 USBUSB FL2FL2 SCAN EDGESCAN EDGE
1 ß 14.100.0014.100.00 USBUSB FL2FL2
2 --.---.----.---.-- ------------ ------
3 --.---.----.---.-- ------------ ------
4 --.---.----.---.-- ------------ ------
MEMORYMEMORY
COMPCOMP
OFFOFF
WIDEWIDE
AGCAGC
MIDMID
VOXVOX
OFFOFF
appears when the memory
channel is selected.
ROLLROLL
SETSET
SELECTSELECT
NAMENAME
WIDEWIDE
SFTSFT
0
FIL2FIL2
USBUSB
qw:pp
TXTX
VFOVFO
USBUSB
USBUSB
USBUSB
FIL2FIL2
qr.qot.pp
qr.wpt.pp
14.100.0014.100.00
14.100.0014.100.00
1
1
VFOVFO
BWBW
2.4k2.4k
9999 --.---.----.---.-- ------------ ------
P1P1 0.500.000.500.00 LSBLSB FL2FL2 SCAN EDGESCAN EDGE
P2P2 29.999.9929.999.99 USBUSB FL2FL2 SCAN EDGESCAN EDGE
1 14.100.0014.100.00 USBUSB FL2FL2
2 --.---.----.---.-- ------------ ------
3 --.---.----.---.-- ------------ ------
4 --.---.----.---.-- ------------ ------
MEMORYMEMORY
ANTANT
1
COMPCOMP
OFFOFF
WIDEWIDE
METERMETER
PoPo
P.AMPP.AMP
1
AGCAGC
MIDMID
ATTATT
OFFOFF
VOXVOX
OFFOFF
IC-756PROII.qxd 02.1.8 15:51 Page 52
53
6
MEMORY OPERATION
Memory channel programming
Memory channel programming can be preformed ei-
ther in VFO mode or in memory mode.
Programming in VFO mode
q Set the desired frequency and operating mode in
VFO mode.
w Push [Y]/[Z] several times to select the desired
memory channel.
Memory channel screen is convenient for selecting the
desired channel.
Memory channel contents appear in the memory chan-
nel readout (below the frequency readout).
•“--.---.-- appears if the selected memory channel is a
blank channel (and does not have contents).
e Push [MW] for 1 sec. to program the displayed fre-
quency and operating mode into the memory
channel.
[EXAMPLE]: Programming 7.088 MHz/LSB into
memory channel 12.
7
3
SSB
MW
or
Push for 1 sec.
Beep
Beep
Beep
SFTSFT
0
FIL2FIL2
USBUSB
qw:pp
TXTX
USBUSB
qr.qpp.pp
14.195.0014.195.00
1
VFOVFO
BWBW
2.4k2.4k
SFTSFT
0
FIL2FIL2
LSBLSB
qw:pp
TXTX
USBUSB
u.pii.pp
14.195.0014.195.00
1
VFOVFO
BWBW
2.4k2.4k
SFTSFT
0
FIL2FIL2
LSBLSB
qw:pp
TXTX
u.pii.pp
--.---.----.---.--
1212
VFOVFO
BWBW
2.4k2.4k
SFTSFT
0
FIL2FIL2
LSBLSB
qw:pp
TXTX
LSBLSB
u.pii.pp
7.088.007.088.00
1212
VFOVFO
BWBW
2.4k2.4k
ANTANT
1
METERMETER
Po
ANTANT
1
METERMETER
Po
ANTANT
1
METERMETER
PoPo
ANTANT
1
METERMETER
PoPo
Programming in memory mode
q Select the desired memory channel with [Y]/[Z] in
memory mode.
Memory channel contents appear in the memory chan-
nel readout (below the frequency readout).
•“--.---.-- appears if the selected memory channel is a
blank channel (and does not have contents).
w Set the desired frequency and operating mode in
memory mode.
To program a blank channel, use direct frequency entry
with the keypad or memo pads, etc.
e Push [MW] for 1 sec. to program the displayed fre-
quency and operating mode into the memory
channel.
[EXAMPLE]: Programming 21.280 MHz/USB into
memory channel 18.
SFTSFT
0
FIL2FIL2
LSBLSB
qw:pp
TXTX
USBUSB
u.pii.pp
14.195.0014.195.00
VFOVFO
1212
BWBW
2.4k2.4k
SFTSFT
0
FIL2FIL2
CWCW
qw:pp
TXTX
USBUSB
e.tpw.pp
14.195.0014.195.00
VFOVFO
1818
BWBW
500500
BPFBPF
SFTSFT
0
FIL2FIL2
USBUSB
qw:pp
TXTX
USBUSB
wq.wip.pp
14.195.0014.195.00
VFOVFO
1818
BWBW
2.4k2.4k
SFTSFT
0
FIL2FIL2
USBUSB
qw:pp
TXTX
USBUSB
wq.wip.pp
14.195.0014.195.00
1818
BWBW
2.4k2.4k
ANTANT
1
METERMETER
Po
ANTANT
1
METERMETER
Po
ANTANT
1
METERMETER
PoPo
ANTANT
1
METERMETER
PoPo
21
7
MW
or
Push for 1 sec.
Beep
Beep
Beep
SSB
IC-756PROII.qxd 02.1.8 15:51 Page 53
54
6
MEMORY OPERATION
Frequency transferring
The frequency and operating mode in a memory chan-
nel can be transferred to the VFO.
Frequency transferring can be performed in either VFO
mode or memory mode.
Transferring in VFO mode
This is useful for transferring programmed contents to
VFO.
q Select VFO mode with [VFO/MEMO].
w Select the memory channel to be transferred with
[Y]/[Z].
Memory channel screen is convenient for selecting the
desired channel.
Memory channel contents appear in the memory chan-
nel readout (below the frequency readout).
•“--.---.-- appears if the selected memory channel is a
blank channel. In this case transferring is impossible.
e Push [VFO/MEMO] for 1 sec. to transfer the fre-
quency and operating mode.
Transferred frequency and operating mode appear on
the frequency readout.
TRANSFERRING EXAMPLE IN VFO MODE
Operating frequency : 21.320 MHz/USB (VFO)
Contents of M-ch 16 : 14.018 MHz/CW
or
Push for 1 sec.
Beep
Beep
Beep
SFTSFT
0
FIL2FIL2
USBUSB
qw:pp
TXTX
USBUSB
wq.ewp.pp
14.950.0014.950.00
1
VFOVFO
BWBW
2.4k2.4k
SFTSFT
0
FIL2FIL2
USBUSB
qw:pp
TXTX
CWCW
wq.ewp.pp
14.018.0014.018.00
1616
VFOVFO
BWBW
2.4k2.4k
SFTSFT
0
FIL2FIL2
CWCW
qw:pp
TXTX
CWCW
qr.pqi.pp
14.018.0014.018.00
1616
VFOVFO
BWBW
500500
BPFBPF
ANTANT
1
METERMETER
Po
ANTANT
1
METERMETER
PoPo
ANTANT
1
METERMETER
PoPo
VFO/
MEMO
Transferring in memory mode
This is useful for transferring frequency and operat-
ing mode while operating in memory mode.
When you have changed the frequency or operat-
ing mode in the selected memory channel:
Displayed frequency and mode are transferred.
Programmed frequency and mode in the mem-
ory channel are not transferred, and they remain
in the memory channel.
q Select the memory channel to be transferred with
[Y]/[Z] in memory mode.
And, set the frequency or operating mode if required.
w Push [VFO/MEMO] for 1 sec. to transfer the fre-
quency and operating mode.
Displayed frequency and operating mode are trans-
ferred to the VFO.
e To return to VFO mode, push [VFO/MEMO] mo-
mentarily.
TRANSFERRING EXAMPLE IN MEMORY MODE
Operating frequency : 14.020 MHz/CW (M-ch 16)
Contents of M-ch 16 : 14.018 MHz/CW
Push for 1 sec.
Programmed contents appear.
Beep
Beep
Beep
VFO/
MEMO
VFO/
MEMO
SFTSFT
0
FIL2FIL2
CWCW
qw:pp
TXTX
USBUSB
qr.pwp.pp
21.320.0021.320.00
VFOVFO
1616
BWBW
500500
SFTSFT
0
FIL2FIL2
CWCW
qw:pp
TXTX
CWCW
qr.pwp.pp
14.018.0014.018.00
1616
VFOVFO
BWBW
500500
SFTSFT
0
FIL2FIL2
CWCW
qw:pp
TXTX
CWCW
qr.pwp.pp
14.020.0014.020.00
VFOVFO
1616
BWBW
500500
BPFBPF
BPFBPF
BPFBPF
ANTANT
1
METERMETER
PoPo
ANTANT
1
METERMETER
PoPo
ANTANT
1
METERMETER
PoPo
IC-756PROII.qxd 02.1.8 15:51 Page 54
55
6
MEMORY OPERATION
Memory names
All memory channels (including scan edges) can be
tagged with alphanumeric names of up to 10 charac-
ters each.
Capital letters, small letters, numerals, some symbols
(! # $ % & ¥ ? " ` ^ + /
.,
: ; = < > ( ) [ ] { } | _
_
)
and spaces can be used.
Editing (programming) memory names
q Push [EXIT/SET] several times to close a multi-
function screen, if necessary.
w Push [(F-4)MEMORY] to select the memory chan-
nel screen.
e Select the desired memory channel.
r Push [(F-4)NAME] to edit memory channel name.
A cursor appears and blinks.
Memory channel names of blank channels cannot be
edited.
t Input the desired character by rotating the tuning
dial or by pushing the band key for number input.
Push [ABC] or [abc] to toggle capital and small letters.
Push [123] or [etc] to toggle numerals and symbols.
Push [(F-1)] or [(F-2)] for cursor movement.
Push [(F-3)DEL] to delete the selected character.
Push [(F-4)SPACE] to input a space.
Pushing the transceivers keypad, [0][9], can also
enter numerals.
y Push [EXIT/SET] to input and set the name.
The cursor disappears.
u Repeat steps e to y to program another memory
channels name, if desired.
i Push [EXIT/SET] to exit the memory channel
screen.
123123
ABCABC
SFTSFT
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1
1
VFOVFO
BWBW
2.4k2.4k
9999 --.---.----.---.-- ------------ ------
P1P1 0.500.000.500.00 LSBLSB FL2FL2 SCAN EDGESCAN EDGE
P2P2 29.999.9929.999.99 USBUSB FL2FL2 SCAN EDGESCAN EDGE
1 14.100.0014.100.00 USBUSB FL2FL2 _
2 --.---.----.---.-- ------------ ------
3 --.---.----.---.-- ------------ ------
4 --.---.----.---.-- ------------ ------
MEMORYMEMORY
ç
å
DELDEL
SPACESPACE WIDEWIDE
ABCABC
Character
group
keys
Selected
character
ROLLROLL
SETSET
SELECTSELECT
NAMENAME
WIDEWIDE
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14.100.0014.100.00
14.100.0014.100.00
1
1
VFOVFO
BWBW
2.4k2.4k
9999 --.---.----.---.-- ------------ ------
P1P1 0.500.000.500.00 LSBLSB FL2FL2 SCAN EDGESCAN EDGE
P2P2 29.999.9929.999.99 USBUSB FL2FL2 SCAN EDGESCAN EDGE
1 14.100.0014.100.00 USBUSB FL2FL2
2 --.---.----.---.-- ------------ ------
3 --.---.----.---.-- ------------ ------
4 --.---.----.---.-- ------------ ------
MEMORYMEMORY
ANTANT
1
COMPCOMP
OFFOFF
WIDEWIDE
METERMETER
PoPo
P.AMPP.AMP
1
AGCAGC
MIDMID
ATTATT
OFFOFF
VOXVOX
OFFOFF
Memory clearing
Any unnecessary memory channels can be cleared.
The cleared memory channels become blank chan-
nels.
q Select memory mode with [VFO/MEMO].
w Select the desired memory channel with [Y]/[Z].
e Push [M-CL] for 1 sec. to clear the contents.
The programmed frequency and operating mode dis-
appear.
r To clear other memory channels, repeat steps w
and e.
SFTSFT
0
FIL2FIL2
USBUSB
qw:pp
TXTX
wr.oyp.pp
1212
BWBW
2.4k2.4k
SFTSFT
0
qw:pp
TXTX
CWCW
qotpp
14.195.0014.195.00
VFOVFO
1212
BWBW
2.4k2.4k
CWCW
14.195.0014.195.00
VFOVFO
ANTANT
1
METERMETER
Po
ANTANT
1
METERMETER
Po
Push for 1 sec.
M-CL
Beep
Beep
Beep
IC-756PROII.qxd 02.1.8 15:51 Page 55
56
6
MEMORY OPERATION
Memo pads
The transceiver has a memo pad function to store fre-
quency and operating mode for easy write and recall.
The memo pads are separate from memory channels.
The default number of memo pads is 5, however, this
can be increased to 10 in set mode if desired. (p. 71)
Memo pads are convenient when you want to memo-
rize a frequency and operating mode temporarily, such
as when you nd a DX station in a pile-up, or when a
desired station is busy for a long time and you want to
temporarily search for other stations.
Use the transceivers memo pads instead of relying on
hastily scribbled notes that are easily misplaced.
Writing frequencies and operating
modes into memo pads
You can simply write the accessed readout frequency
and operating mode by pushing [MP-W].
When you write a 6th frequency and operating mode,
the oldest written frequency and operating mode are
automatically erased to make room for the new set-
tings.
Each memo pad must have its own unique combi-
nation of frequency and operating mode; memo
pads having identical settings cannot be written.
Displayed frequency and mode
Push
Newest
The oldest written frequency
and mode are erased.
Oldest
MP-W
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MEMO
PADS
Calling up a frequency from a memo pad
You can simply call up the desired frequency and op-
erating mode of a memo pad by pushing [MP-R] sev-
eral times.
Both VFO and memory modes can be used.
The frequency and operating mode are called up, starting
from the most recently written.
When you call up a frequency and an operating mode
from memo pads with [MP-R], the previously dis-
played frequency and operating mode are automati-
cally stored in a temporary pad. The frequency and
operating mode in the temporary pad can be recalled
by pushing [MP-R] several times.
You may think there are 6 memo pads because 6 different
frequencies (5 are in memo pads and 1 is in the tempo-
rary pad) are called up by [MP-R].
If you change the frequency or operating mode
called up from a memo pad with the tuning dial,
etc., the frequency and operating mode in the tem-
porary pad are erased.
VFO or MEMORY
mode display
MEMO PADS
TEMPORARY PAD
Push
Pushing [MP-R] calls up the
frequency and operating
mode in a memo pad and
the temporary pad sequen-
tially.
Frequency and mode before
pushing [
MP-R].
MP-R
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IC-756PROII.qxd 02.1.8 15:51 Page 56
7
57
SCANS
Scan types
Preparation
Channels
For programmed scan:
Program scan edge frequencies into scan edge mem-
ory channels P1 and P2.
For
F scan:
Set the F span (F scan range) in the scan screen.
For memory scan:
Program 2 or more memory channels except scan
edge memory channels.
For select memory scan:
Designate 2 or more memory channels as select mem-
ory channels. To designate the channel as a select
memory channel, choose a memory channel, then
push [(F-3)SELECT] in the scan screen (memory
mode) or in the memory channel screen.
Scan resume ON/OFF
You can select the scan to resume or cancel when de-
tecting a signal, in set mode. Scan resume ON/OFF
must be set before operating a scan. See p. 61 for
ON/OFF setting and scan resume condition details.
Scan speed
Scan speed can be selected from 2 levels, high or low,
in set mode. See p. 61 for details.
Squelch condition
The scan function can be used on the main readout only.
You can operate a scan while operating on a frequency using
the dualwatch or split functions. See p. 31 for details.
PROGRAMMED SCAN
Repeatedly scans between two scan edge frequencies
(scan edge memory channels P1 and P2).
This scan operates in VFO mode.
SELECT MEMORY SCAN
Repeatedly scans all select memory channels.
F SCAN
Repeatedly scans within F span area.
This scan operates in memory mode.This scan operates in memory mode.
This scan operates in both VFO and memory modes.
Scan
Scan edge
P1 or P2
Scan edge
P2 or P1
Jump
Mch 1 Mch 5
Mch 2 Mch 3 Mch 4
Mch 6Mch 7Mch 99
MEMORY SCAN
Repeatedly scans all programmed memory channels.
Mch 1 Mch 5
Mch 2 Mch 3 Mch 4
Mch 6Mch 7Mch 99
ß (select)
ß (select)ß (select)
ß (select)
ß (select)
Blank channel Blank channel
ß (select)
ß (select)ß (select)
ß (select)
ß (select)
ScanScan
F frequency +F frequency
Start frequency
Jump
SQUELCH
CLOSED
SQUELCH
OPEN
Scan stops when detecting a signal.
If you set scan resume ON in set mode, the
scan pauses for 10 sec. when detecting a
signal, then resumes. When a signal disap-
pears while scan is paused, scan resumes
2 sec. later.
The scan continues
until it is stopped
manually, and does
not pause even if it
detects signals.
Scan pauses on
each channel when
the scan resume is
ON; not applicable
when OFF.
SCAN
PROGRAMMED
STARTS
SCAN
MEMORY SCAN
WITH
IC-756PROII.qxd 02.1.8 15:51 Page 57
58
7
SCANS
Programmed scan operation
q Push [EXIT/SET] several times to close a multi-
function screen, if necessary.
w Select VFO mode.
e Select the desired operating mode.
The operating mode can also be changed while scan-
ning.
r Push [(F-5)SCAN] to select the scan screen.
t Set [RF/SQL] open or closed.
See previous page for scan condition.
If the [RF/SQL] control function is set as AUTO, the
squelch is always open in SSB, CW and RTTY modes.
See pgs. 3, 69 for details.
y Push [(F-1)PROG] to start the programmed scan.
Decimal points blink while scanning.
u When the scan detects a signal, the scan stops,
pauses or ignores it depending on the resume set-
ting and the squelch condition.
i To cancel the scan, push [(F-1)PROG].
If the same frequencies are programmed into the
scan edge memory channel P1 and P2, pro-
grammed scan does not start.
SFTSFT
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1
VFOVFO
BWBW
2.4k2.4k
SCANSCAN
ANTANT
1
COMPCOMP
OFFOFF
WIDEWIDE
METERMETER
PoPo
P.AMPP.AMP
1
AGCAGC
MIDMID
ATTATT
OFFOFF
VOXVOX
OFFOFF
PROGPROG
F FINEFINE
F SPANF SPAN
SETSET
PROGRAM SCANPROGRAM SCAN
F SpanSpan: ±±10kHz10kHz
ProgrammedProgrammed P1:P1:0.500.00MHz0.500.00MHz
scanscan edgesedges P2:P2: 29.999.99MHz29.999.99MHz
PROGPROG
F FINEFINE
F SPANF SPAN
SETSET
SCANSCAN
COMPCOMP
OFFOFF
WIDEWIDE
AGCAGC
MIDMID
VOXVOX
OFFOFF
F SpanSpan: ±±10kHz10kHz
ProgrammedProgrammed P1:P1:0.500.00MHz0.500.00MHz
scanscan edgesedges P2:P2: 29.999.99MHz29.999.99MHz
F scan operation
q Push [EXIT/SET] several times to close a multi-
function screen, if necessary.
w Select VFO mode or a memory channel.
e Select the desired operating mode.
The operating mode can also be changed while scan-
ning.
r Push [(F-5)SCAN] to select the scan screen.
t Set [RF/SQL] open or closed.
See previous page for scan condition.
If the [RF/SQL] control function is set as AUTO, the
squelch is always open in SSB, CW and RTTY modes.
See pgs. 3, 69 for details.
y Set the F span by pushing [(F-4)F SPAN].
±5 kHz, ±10 kHz, ±20 kHz, ±50 kHz, ±100 kHz,
±500 kHz and ±1000 kHz are selectable.
u Set center frequency of the F span.
i Push [(F-2)F] to start the F scan.
Decimal points blink while scanning.
o When the scan detects a signal, the scan stops,
pauses or ignores it depending on the resume set-
ting and the squelch condition.
!0 To cancel the scan, push [(F-2)F].
SFTSFT
0
FIL2FIL2
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VFOVFO
USBUSB
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14.100.0014.100.00
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1
1
VFOVFO
BWBW
2.4k2.4k
SCANSCAN
ANTANT
1
COMPCOMP
OFFOFF
WIDEWIDE
METERMETER
PoPo
P.AMPP.AMP
1
AGCAGC
MIDMID
ATTATT
OFFOFF
VOXVOX
OFFOFF
PROGPROG
F FINEFINE
F SPANF SPAN
SETSET
F SCANSCAN
F CenterCenter: 14.195.00MHz14.195.00MHz
F SpanSpan: ±±10kHz10kHz
ProgrammedProgrammed P1:P1:0.500.00MHz0.500.00MHz
scanscan edgesedges P2:P2: 29.999.99MHz29.999.99MHz
PROGPROG
F FINEFINE
F SPANF SPAN
SETSET
SCANSCAN
COMPCOMP
OFFOFF
WIDEWIDE
AGCAGC
MIDMID
VOXVOX
OFFOFF
F SpanSpan: ±±10kHz10kHz
ProgrammedProgrammed P1:P1:0.500.00MHz0.500.00MHz
scanscan edgesedges P2:P2: 29.999.99MHz29.999.99MHz
IC-756PROII.qxd 02.1.8 15:51 Page 58
59
7
SCANS
Fine programmed scan/ne F scan
Fine scan functions as programmed or F scan, but
scan speed decreases when the squelch opens but
does not stop. The scanning tuning step shifts from
50 Hz to 10 Hz while the squelch opens.
q Push [EXIT/SET] several times to close a multi-
function screen, if necessary.
w Push [(F-5)SCAN] to select the scan screen.
e Set for programmed scan or F scan as described
on previous page.
r Push [(F-1)PROG] or [(F-2)F] to start a scan.
Decimal points blink while scanning.
t Push [(F-3)FINE] to start a ne scan.
•“FINE PROGRAM SCAN or FINE F SCAN ap-
pears.
y When the scan detects a signal, the scan speed
decreases but does not stop.
u Push [(F-1)PROG] or [(F-2)F] to stop the scan;
push [(F-3)FINE] to cancel the ne scan.
SFTSFT
0
FIL2FIL2
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1
VFOVFO
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2.4k2.4k
SCANSCAN
ANTANT
1
COMPCOMP
OFFOFF
WIDEWIDE
METERMETER
PoPo
P.AMPP.AMP
1
AGCAGC
MIDMID
ATTATT
OFFOFF
VOXVOX
OFFOFF
PROGPROG
F FINEFINE
F SPANF SPAN
SETSET
FINE PROGRAM SCANFINE PROGRAM SCAN
F SpanSpan: ±±10kHz10kHz
ProgrammedProgrammed P1:P1:0.500.00MHz0.500.00MHz
scanscan edgesedges P2:P2: 29.999.99MHz29.999.99MHz
SFTSFT
0
FIL2FIL2
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1
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VFOVFO
BWBW
2.4k2.4k
SCANSCAN
ANTANT
1
COMPCOMP
OFFOFF
WIDEWIDE
METERMETER
Po
P.AMPP.AMP
1
AGCAGC
MIDMID
ATTATT
OFFOFF
VOXVOX
OFFOFF
PROGPROG
F FINEFINE
F SPANF SPAN
SETSET
PROGRAM SCANPROGRAM SCAN
F SpanSpan: ±±10kHz10kHz
ProgrammedProgrammed P1:P1:0.500.00MHz0.500.00MHz
scanscan edgesedges P2:P2: 29.999.99MHz29.999.99MHz
Memory scan operation
q Push [EXIT/SET] several times to close a multi-
function screen, if necessary.
w Select memory mode.
e Push [(F-5)SCAN] to select the scan screen.
r Set [RF/SQL] open or closed.
See p. 57 for scan condition.
If the [RF/SQL] control function is set as AUTO, the
squelch is always open in SSB, CW and RTTY modes.
See pgs. 3, 69 for details.
t Push [(F-1)MEMO] to start the memory scan.
Decimal points blink while scanning.
y When the scan detects a signal, the scan stops,
pauses or ignores it depending on the resume set-
ting and the squelch condition.
u To cancel the scan, push [(F-1)MEMO].
2 or more memory channels must be programmed
for memory scan to start.
SFTSFT
0
FIL2FIL2
USBUSB
qw:pp
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VFOVFO
USBUSB
USBUSB
USBUSB
FIL2FIL2
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1
VFOVFO
12 12
BWBW
2.4k2.4k
SCANSCAN
ANTANT
1
COMPCOMP
OFFOFF
WIDEWIDE
METERMETER
PoPo
P.AMPP.AMP
1
AGCAGC
MIDMID
ATTATT
OFFOFF
VOXVOX
OFFOFF
MEMOMEMO
F SELECTSELECT
F SPANF SPAN
SETSET
MEMORY SCANMEMORY SCAN
F SpanSpan: ±±10kHz10kHz
ProgrammedProgrammed P1:P1:0.500.00MHz0.500.00MHz
scanscan edgesedges P2:P2: 29.999.99MHz29.999.99MHz
SFTSFT
0
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BWBW
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SCANSCAN
ANTANT
1
COMPCOMP
OFFOFF
WIDEWIDE
METERMETER
Po
P.AMPP.AMP
1
AGCAGC
MIDMID
ATTATT
OFFOFF
VOXVOX
OFFOFF
MEMOMEMO
F SELECTSELECT
F SPANF SPAN
SETSET
F SpanSpan: ±±10kHz10kHz
ProgrammedProgrammed P1:P1:0.500.00MHz0.500.00MHz
scanscan edgesedges P2:P2: 29.999.99MHz29.999.99MHz
IC-756PROII.qxd 02.1.8 15:51 Page 59
60
7
SCANS
Select memory scan operation
q Push [EXIT/SET] several times to close a multi-
function screen, if necessary.
w Select memory mode.
e Push [(F-5)SCAN] to select the scan screen.
r Set [RF/SQL] open or closed.
See p. 57 for scan condition.
If the [RF/SQL] control function is set as AUTO, the
squelch is always open in SSB, CW and RTTY modes.
See pgs. 3, 69 for details.
t Push [(F-1)MEMO] to start the memory scan.
Decimal points blink while scanning.
y Push [(F-3)SELECT] to start select memory scan;
push [(F-3)SELECT] again to return to memory
scan, if desired.
u When the scan detects a signal, the scan stops,
pauses or ignores it depending on the resume set-
ting and the squelch condition.
i To cancel the scan, push [(F-1)MEMO].
2 or more memory channels must be designated
as select memory channels for select memory
scan to start.
SFTSFT
0
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VFOVFO
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2.4k2.4k
SCANSCAN
1212ß
ANTANT
1
COMPCOMP
OFFOFF
WIDEWIDE
METERMETER
PoPo
P.AMPP.AMP
1
AGCAGC
MIDMID
ATTATT
OFFOFF
VOXVOX
OFFOFF
MEMOMEMO
F SELECTSELECT
F SPANF SPAN
SETSET
SELECT MEMORY SCANSELECT MEMORY SCAN
F SpanSpan: ±±10kHz10kHz
ProgrammedProgrammed P1:P1:0.500.00MHz0.500.00MHz
scanscan edgesedges P2:P2: 29.999.99MHz29.999.99MHz
SFTSFT
0
FIL2FIL2
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VFOVFO
12 12
BWBW
2.4k2.4k
SCANSCAN
ANTANT
1
COMPCOMP
OFFOFF
WIDEWIDE
METERMETER
PoPo
P.AMPP.AMP
1
AGCAGC
MIDMID
ATTATT
OFFOFF
VOXVOX
OFFOFF
MEMOMEMO
F SELECTSELECT
F SPANF SPAN
SETSET
F SpanSpan: ±±10kHz10kHz
ProgrammedProgrammed P1:P1:0.500.00MHz0.500.00MHz
scanscan edgesedges P2:P2: 29.999.99MHz29.999.99MHz
Setting select memory channels
q Push [EXIT/SET] several times to close a multi-
function screen, if necessary.
w Select memory mode.
e Push [(F-5)SCAN] to select the scan screen.
r Select the desired memory channel to set as a se-
lect memory channel.
t Push [(F-3)SELECT] to set the memory channel
as a select memory or not.
y Repeat steps r to t to program another memory
channel as a select memory channel, if desired.
u Push [EXIT/SET] to exit the scan screen.
Select memory channels can also be set in the
memory channel screen. (p. 52)
1212ß
SFTSFT
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FIL2FIL2
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VFOVFO
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2.4k2.4k
SCANSCAN
ANTANT
1
COMPCOMP
OFFOFF
WIDEWIDE
METERMETER
PoPo
P.AMPP.AMP
1
AGCAGC
MIDMID
ATTATT
OFFOFF
VOXVOX
OFFOFF
MEMOMEMO
F SELECTSELECT
F SPANF SPAN
SETSET
ß appears for select memory channels.
F SpanSpan: ±±10kHz10kHz
ProgrammedProgrammed P1:P1:0.500.00MHz0.500.00MHz
scanscan edgesedges P2:P2: 29.999.99MHz29.999.99MHz
SFTSFT
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VFOVFO
12 12
BWBW
2.4k2.4k
SCANSCAN
ANTANT
1
COMPCOMP
OFFOFF
WIDEWIDE
METERMETER
PoPo
P.AMPP.AMP
1
AGCAGC
MIDMID
ATTATT
OFFOFF
VOXVOX
OFFOFF
MEMOMEMO
F SELECTSELECT
F SPANF SPAN
SETSET
F SpanSpan: ±±10kHz10kHz
ProgrammedProgrammed P1:P1:0.500.00MHz0.500.00MHz
scanscan edgesedges P2:P2: 29.999.99MHz29.999.99MHz
IC-756PROII.qxd 02.1.8 15:51 Page 60
61
7
SCANS
Scan set mode
Scan set mode is used for programming scanning
speed and scan resume condition.
Scan speed
The transceiver has 2 speeds for scanning, high and
low.
q Push [EXIT/SET] several times to close a multi-
function screen, if necessary.
w Push [(F-5)SCAN] to select the scan screen.
e Push [(F-5)SET] to select the scan set mode
screen.
r Push [(F-1)Y] to select the scan speed item.
t Rotate the tuning dial to select the scan speed.
Push [(F-3)DEF] to select the default condition.
y Push [EXIT/SET] to exit the scan set mode.
Scan resume condition
This item sets the scan resume function ON or OFF.
ON: scan resumes 10 sec. after stopping on a signal
(or 1 sec. after a signal disappears); OFF: scan does
not resume after stopping on a signal.
q Push [EXIT/SET] several times to close a multi-
function screen, if necessary.
w Push [(F-5)SCAN] to select the scan screen.
e Push [(F-5)SET] to select the scan set mode
screen.
r Push [(F-2)Z] to select the scan resume condition
item.
t Rotate the tuning dial to turn the scan resume
function ON or OFF.
Push [(F-3)DEF] to select the default condition.
y Push [EXIT/SET] to exit the scan set mode.
é
è
DEF
SCAN SET
COMPCOMP
OFFOFF
WIDEWIDE
AGCAGC
MIDMID
VOXVOX
OFFOFF
SCAN SpeedSCAN Speed HIGHHIGH
SCAN ResumeSCAN Resume ONON
é
è
DEF
SCAN SET
COMPCOMP
OFFOFF
WIDEWIDE
AGCAGC
MIDMID
VOXVOX
OFFOFF
SCAN SpeedSCAN Speed HIGHHIGH
SCAN ResumeSCAN Resume ONON
PROGPROG
F FINEFINE
F SPANF SPAN
SETSET
SCANSCAN
COMPCOMP
OFFOFF
WIDEWIDE
AGCAGC
MIDMID
VOXVOX
OFFOFF
F SpanSpan: ±±10kHz10kHz
ProgrammedProgrammed P1:P1:0.500.00MHz0.500.00MHz
scanscan edgesedges P2:P2: 29.999.99MHz29.999.99MHz
Tone scan
The transceiver can detect the subaudible tone fre-
quency in a received signal. By monitoring a signal
that is being transmitted on a repeater input fre-
quency, you can determine the tone frequency re-
quired to access the repeater.
q Set the desired frequency or memory channel to
be checked for a tone frequency.
w Push [AM/FM] several times to select FM mode.
e Push [TONE] for 1 sec. to enter the tone frequency
screen.
r Push [(F-1)Y] or [(F-2)Z] to check the repeater
tone frequency or tone squelch frequency, respec-
tively. (pgs. 47, 48)
t Push [(F-5)T-SCAN] to start the tone scan.
•“SCAN ashes while scanning.
y When the tone frequency is detected, the tone
scan pauses.
The tone frequency is set temporarily on a memory
channel. Program into the memory channel to store the
tone frequency permanently.
The decoded tone frequency is used for the repeater
tone frequency or tone squelch frequency.
u To stop the scan, push [(F-5)T-SCAN].
i Push [EXIT/SET] to exit the tone frequency
screen.
TONE FREQUENCYTONE FREQUENCY
188.8Hz188.8Hz SCANSCAN
88.5Hz88.5HzT-SQL TONET-SQL TONE
REPEATER TONEREPEATER TONE
TONETONE
AGCAGC
FASTFAST
VOXVOX
OFFOFF
T-SCANT-SCAN
T-SCANT-SCAN
é
è
DEFDEF
TONE FREQUENCYTONE FREQUENCY
88.5Hz88.5Hz
88.5Hz88.5HzT-SQL TONET-SQL TONE
REPEATER TONEREPEATER TONE
TONETONE
AGCAGC
FASTFAST
VOXVOX
OFFOFF
IC-756PROII.qxd 02.1.8 15:51 Page 61
8
62
CLOCK AND TIMERS
Setting the current time
The transceiver has a built-in 24-hour clock with
power-off and power-on timer functions. This is useful
when logging QSOs and so on. The clock indication
is always displayed except after pushing [F-INP].
q Push [EXIT/SET] several times to close a multi-
function screen, if necessary.
w Push [EXIT/SET] for 1 sec. then [(F-4)TIME] to
enter timer set mode.
e Push [(F-1)Y] to select the Time (Now) item.
r Set the current time using the tuning dial.
•“TIMEset Push [SET] blinks.
t Push [(F-4)SET] to enter the set time.
Push [EXIT/SET] to cancel the setting.
y Push [EXIT/SET] twice to exit timer set mode.
SFTSFT
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ANTANT
1
METERMETER
PoPo
Set time appears.
TIME SETTIME SET
é
è
TimeTime(Now)(Now) 15:2415:24
TimerTimer FunctionFunction ONON
Power-ONPower-ON TimerTimer SetSet 0:000:00
Power-OFFPower-OFF PeriodPeriod 60min60min
TIME-setTIME-setPushPush [SET][SET]
SETSET
COMPCOMP
OFFOFF
WIDEWIDE
AGC
MID
VOX
OFF
SFTSFT
0
FIL2FIL2
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USBUSB
USBUSB
USBUSB
FIL2FIL2
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1
1
VFOVFO
BWBW
2.4k2.4k
TIME SETTIME SET
é
è
TimeTime(Now)(Now) 12:0012:00
TimerTimer FunctionFunction ONON
Power-ONPower-ON TimerTimer SetSet 0:000:00
Power-OFFPower-OFF PeriodPeriod 60min60min
ANTANT
1
COMPCOMP
OFFOFF
WIDEWIDE
METERMETER
PoPo
P.AMPP.AMP
1
AGCAGC
MIDMID
ATTATT
OFFOFF
VOXVOX
OFFOFF
Timer function activity
The timer functions can be switched ON and OFF
q Push [EXIT/SET] several times to close a multi-
function screen, if necessary.
w Push [EXIT/SET] for 1 sec. then [(F-4)TIME] to
enter timer set mode.
e Push [(F-1)Y] or [(F-2)Z] to select the Timer Func-
tion item.
r Select the timer function activity using the tuning
dial.
ON : Activates the timer functions when [POWER]
is pushed momentarily. (default)
OFF : Deactivates the timer functions even when
[POWER] is pushed momentarily.
t Push [EXIT/SET] twice to exit timer set mode.
TIME SETTIME SET
é
è
TimeTime(Now)(Now) 15:2415:24
TimerTimer FunctionFunction OFFOFF
Power-ONPower-ON Timer SetTimer Set 19:3019:30
Power-OFFPower-OFF PeriodPeriod 60min60min
SETSET
COMPCOMP
OFFOFF
WIDEWIDE
AGCAGC
MIDMID
VOXVOX
OFFOFF
TIME SETTIME SET
é
è
TimeTime(Now)(Now) 15:2415:24
TimerTimer FunctionFunction ONON
Power-ONPower-ON Timer SetTimer Set 0:000:00
Power-OFFPower-OFF PeriodPeriod 60min60min
COMPCOMP
OFFOFF
WIDEWIDE
AGCAGC
MIDMID
VOXVOX
OFFOFF
IC-756PROII.qxd 02.1.8 15:51 Page 62
63
8
CLOCK AND TIMERS
Setting power-off period
The transceiver can be set to turn OFF automatically
after being activated via the power-on timer. The
power-off period can be set to 5120 min. in 5 min.
steps.
q Push [EXIT/SET] several times to close a multi-
function screen, if necessary.
w Push [EXIT/SET] for 1 sec. then [(F-4)TIME] to
enter timer set mode.
e Push [(F-2)Z] to select the Power-OFF Period
item.
r Set the desired power-off time using the tuning
dial.
•“TIMER set Push [SET] blinks.
t Push [(F-4)SET] to enter the set time.
Push [EXIT/SET] to cancel the setting.
y Push [EXIT/SET] twice to exit timer set mode.
TIME SETTIME SET
é
è
SETSET
TimeTime(Now)(Now) 15:2415:24
TimerTimer FunctionFunction ONON
Power-ONPower-ON Timer SetTimer Set 19:3019:30
Power-OFFPower-OFF PeriodPeriod 45min45min
TIMER-setTIMER-set PushPush[SET][SET]
COMPCOMP
OFFOFF
WIDEWIDE
AGCAGC
MIDMID
VOXVOX
OFFOFF
TIME SETTIME SET
é
è
TimeTime(Now)(Now) 15:2415:24
TimerTimer FunctionFunction ONON
Power-ONPower-ON Timer SetTimer Set 19:3019:30
Power-OFFPower-OFF PeriodPeriod 60min60min
COMPCOMP
OFFOFF
WIDEWIDE
AGCAGC
MIDMID
VOXVOX
OFFOFF
Timer operation
q Preset the power-on time and power-off period as
described previously.
w Push [POWER] momentarily to turn the timer func-
tion ON.
The [POWER] light lights when the timer function is
ON.
e Push [POWER] for 1 sec. to turn the power OFF.
The [POWER] light lights continuously.
r When the set time arrives, the power is automati-
cally turned ON.
t The transceiver emits 10 beeps and turns OFF
after the power-off period elapses.
The [POWER] light blinks while beeping.
Push [POWER] momentarily to cancel the power-off
timer, if desired.
The timer function in timer set mode must be
turned ON to eanbles the timer operation. See
page 68 for details.
[POWER]
Setting power-on time
The transceiver can be set to turn ON automatically at
a specied time.
q Push [EXIT/SET] several times to close a multi-
function screen, if necessary.
w Push [EXIT/SET] for 1 sec. then [(F-4)TIME] to
enter timer set mode.
e Push [(F-1)Y] or [(F-2)Z] to select the Power-ON
Timer Set item.
r Set the desired power-on time using the tuning
dial.
•“TIMERset Push [SET] blinks.
t Push [(F-4)SET] to enter the set time.
Push [EXIT/SET] to cancel the setting.
y Push [EXIT/SET] twice to exit timer set mode.
TIME SETTIME SET
é
è
TimeTime(Now)(Now) 15:2415:24
TimerTimer FunctionFunction ONON
Power-ONPower-ON Timer SetTimer Set 19:3019:30
Power-OFFPower-OFF PeriodPeriod 60min60min
TIMER-setTIMER-set PushPush[SET][SET]
SETSET
COMPCOMP
OFFOFF
WIDEWIDE
AGCAGC
MIDMID
VOXVOX
OFFOFF
TIME SETTIME SET
é
è
TimeTime(Now)(Now) 15:2415:24
TimerTimer FunctionFunction ONON
Power-ONPower-ON Timer SetTimer Set 0:000:00
Power-OFFPower-OFF PeriodPeriod 60min60min
COMPCOMP
OFFOFF
WIDEWIDE
AGCAGC
MIDMID
VOXVOX
OFFOFF
IC-756PROII.qxd 02.1.8 15:51 Page 63
9
64
SET MODE
Set mode description
Set mode is used for programming infrequently
changed values or conditions of functions. This trans-
ceiver has a level set mode, display set mode, timer
set mode and miscellaneous (others) set mode.
Set mode operation
q Push [EXIT/SET] several times to close a multi-
function screen, if necessary.
w Push [EXIT/SET] for 1 sec. to select the set mode
menu screen.
e Push [(F-1)LEVEL], [(F-2)DISP], [(F-3)DSP], [(F-
4)TIME] or [(F-5)OTHERS] to enter the desired set
mode.
r For display or miscellaneous (others) set mode,
push [(F-5)WIDE] to toggle wide and normal
screen.
t Push [(F-1)Y] or [(F-2)Z] to select the desired item.
y Set the desired condition using the tuning dial.
Push [(F-3)DEF] for 1 sec. to select a default condition
or value.
u For timer set mode, push [(F-4)SET] to enter the set
time.
i Push [EXIT/SET] twice to exit the set mode.
Display set mode (p. 66)
Level set mode (p. 65)
Start up screen
Set mode menu screen
DSP set mode (p. 67)
Timer set mode (pgs. 62, 68)
Miscellaneous (others) set mode (p. 68)
SFTSFT
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VFOVFO
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USBUSB
14.100.0014.100.00
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SET MODESET MODE
LEVEL LEVEL
SETSET
SSB Tx Tone (Bass)SSB Tx Tone (Bass) 0
SSB Tx Tone (Treble)SSB Tx Tone (Treble) 0
Monitor LevelMonitor Level 50%50%
Side Tone LevelSide Tone Level 50%50%
Side Tone Level LimitSide Tone Level Limit ONON
Beep Level Beep Level 50%50%
Beep Level LimitBeep Level Limit ONON
OTHERS OTHERS
SETSET
TIME TIME
SETSET
DISPLAY DISPLAY
SETSET
SCOPESCOPE
VOICEVOICE KEYERKEYER
MEMORYMEMORY
SCANSCAN
LEVELLEVEL
DISPDISP DSPDSP
TIMETIME
OTHERSOTHERS
é
è
DEFDEF
é
è
DEFDEF
WIDEWIDE
é
è
DEFDEF
WIDEWIDE
SSB-FILSSB-FIL
CW-FILCW-FIL
é
è
DSP FILTER SETDSP FILTER SET
SHARPSHARPSSBSSB
SHARPCW
METERMETER
PoPo
P.AMPP.AMP
1
ATTATT
0FF0FF
BK-INBK-IN
OFFOFF
1/41/4
OFFOFF
AGCAGC
MIDMID
ANTANT
1
EXIT/SET
Push
for 1 sec.
SFTSFT
0
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USBUSB
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VFOVFO
BWBW
2.4k2.4k
METERMETER
PoPo
P.AMPP.AMP
1
ATTATT
0FF0FF
BK-INBK-IN
OFFOFF
1/41/4
OFFOFF
AGCAGC
MIDMID
ANTANT
1
BK-INBK-IN
OFFOFF
1/41/4
OFFOFF
AGCAGC
MIDMID
BK-INBK-IN
OFFOFF
1/41/4
OFFOFF
AGCAGC
MIDMID
BK-INBK-IN
OFFOFF
1/41/4
OFFOFF
AGCAGC
MIDMID
BK-INBK-IN
OFFOFF
1/41/4
OFFOFF
AGCAGC
MIDMID
BK-INBK-IN
OFFOFF
1/41/4
OFFOFF
AGCAGC
MIDMID
F-1
F-2
F-3
F-4
F5
SET MODE MENUSET MODE MENU
LEVEL LEVEL TX Tone,Monitor,Side Tone etcTX Tone,Monitor,Side Tone etc
DISP Bright,Contrast,Style,Font etc DISP Bright,Contrast,Style,Font etc
DSP DSP DSP Filter TypeDSP Filter Type
TIME Clock/Timer TIME Clock/Timer
OTHERS OTHERS Other Set ModeOther Set Mode
CalibrationCalibrationMarkerMarker OFFOFF
Beep(Confirmation)Beep(Confirmation) ONON
Beep(BandBeep(Band Edge)Edge) ONON
RF/SQLRF/SQLControlControl RF+SQLRF+SQL
QuickQuick DualwatchDualwatch ONON
QuickQuick SPRITSPRIT ONON
FMFMSPLITSPLIT Offset(HF)Offset(HF) -0.100MHz-0.100MHz
TimeTime(Now)(Now) 12:0012:00
Timer FunctionTimer Function ONON
Power-ONPower-ON TimerTimer SetSet 0:000:00
Power-OFFPower-OFF PeriodPeriod 60min60min
Contrast(LCD) 60%
Bright(LCD) 50%
Horizon 4
Backlight(Switches) 8
DisplayType A
DisplayFont Basic1
MemoryName ON
IC-756PROII.qxd 02.1.8 15:51 Page 64
65
9
SET MODE
Level set mode
SSSSBB TTxx TToonnee ((BBaassss))
This item adjusts the bass level of the transmit audio
tone in SSB mode from 5 dB to +5 dB in 1 dB steps.
0dB
0 dB (default)
SSSSBB TTxx TToonnee ((TTrreebbllee))
This item adjusts the treble level of the transmit audio
tone in SSB mode from 5 dB to +5 dB in 1 dB steps.
0dB
0 dB (default)
MMoonniittoorr LLeevveell
This item adjusts the transmit IF signal monitor level
from 0% to 100% in 1% steps.
See p. 35 for details.
50%
50% (default)
SSiiddee TToonnee LLeevveell
This item adjusts the CW side tone level from 0% to
100% in 1% steps.
See p. 35 for details.
50%
50% (default)
BBeeeepp LLeevveell
This item adjusts the volume level for confirmation
beep tones from 0% to 100% in 1% steps. When
beep tones are turned OFF, this setting has no effect.
50%
50% (default)
BBeeeepp LLeevveell LLiimmiitt
This item allows you to set a maximum volume level
for conrmation beep tones. Conrmation beep tones
are linked to the [AF] control until a specied volume
level is reached further rotation of the [AF] control
will not increase the volume of the beep tones.
OONN
Beep level is limited with
[AF] (default)
OOFFFF
Beep level is linked to [AF]
SSiiddee TToonnee LLeevveell LLiimmiitt
This item allows you to set a maximum volume level
for CW side tones. CW side tones are linked to the
[AF] control until a specied volume level is reached
further rotation of the [AF] control will not increase
the volume of the CW side tones.
OONN
CW side tone level is limited
with [AF] (default)
OOFFFF
CW side tone level is linked
to [AF]
IC-756PROII.qxd 02.1.8 15:51 Page 65
66
9
SET MODE
Display set mode
To adjust the LCD contrast or backlight, wait until
the LCD becomes stable (10 min. or more after turn-
ing power ON). This is an inherent characteristic of
LCDs and LCD backlights and does not indicate a
transceiver malfunction.
CCoonnttrraasstt ((LLCCDD))
This item adjusts the contrast of the LCD from 0% to
100% in 1% steps.
60%
60% (default)
BBaacckklliigghhtt ((LLCCDD))
This item adjusts the brightness of the LCD from 0%
to 100% in 1% steps.
50%
50% (default)
HHoorriizzoonn
This item adjusts the horizontal position of the LCD
from 1 to 8.
4
Horizontal position is 4. (default)
BBaacckklliigghhtt((SSwwiittcchheess))
This item adjusts the brightness of the switches from
1 to 8.
8
Backlight level is 8. (Maximum; default)
DDiissppllaayy TTyyppee
This item sets the LCD screen type. There are 8 se-
lectable types: A, B, C, D, E, F, G and H.
AA
A-type LCD screen (default)
DDiissppllaayy FFoonntt
This item sets the font of the frequency readouts.
There are 7 selectable fonts: Basic1, Basic2, Pop,
7seg (7 segment numeral), Italic 1, Italic 2 and Clas-
sic.
IIttaalliicc22
Italic 2 font (default)
MMeemmoorryy NNaammee
This item sets the memory name indication ON and
OFF.
See p. 55 for details.
OONN
Memory name is displayed.
(default)
OOFFFF
Memory name is not dis-
played.
IC-756PROII.qxd 02.1.8 15:52 Page 66
67
9
SET MODE
MMyy CCaallll
Your call sign, etc. can be displayed in the opening
screen when turning power ON. Up to 10 characters
can be programmed.
Capital letters, numerals, some symbols ( /
.
) and
spaces can be used.
q Push [EXIT/SET] several times to close a multi-
function screen, if necessary.
w Push [EXIT/SET] for 1 sec. then [(F-2)DISP] mo-
mentarily to select the display set mode screen.
e Push [(F-2)Z] several times to select the My Call
item.
r Push [(F-4)EDIT] to edit.
A cursor appears and blinks.
t Input the desired character by rotating the tuning
dial or by pushing the band key for number input.
Push [ABC] to select capital letters.
Push [123] or [etc] to toggle numerals and symbols.
Push [(F-1)] or [(F-2)] for cursor movement.
Push [(F-3)DEL] to delete the selected character.
Push [(F-4)SPACE] to input a space.
y Push [EXIT/SET] to input the set name.
The cursor disappears.
u Push [EXIT/SET] to exit the set mode screen.
Opening screen example
NOW CALIBRATING
DIGITAL SIGNAL PROCESSOR
PLEASE WAIT FOR 10sec.
i756PROi756PROi756PRO™
JA3YUA
ç
å
DELDEL
SPACESPACE WIDEWIDE
DISPLAY SET
123123
ABCABC
Character
group
keys
Selected
character
Bright(LCD) 50%
Horizon 4
Backlight(Switches) 8
DisplayType A
DisplayFont Basic1
MemoryName ON
MyCall _A3YUA
ABCABC
é
è
EDIT
WIDEWIDE
DISPLAY SET
VOXVOX
OFFOFF
COMPCOMP
OFFOFF
WIDEWIDE
AGCAGC
MIDMID
Bright(LCD) 50%
Horizon 4
Backlight(Switches) 8
DisplayType A
DisplayFont Basic1
MemoryName ON
MyCall JA3YUA
Display set mode (continued)
DSP lter set mode
To suit your operating style, the type of DSP filter
shape for SSB and CW can be selected.
q Push the [EXIT/SET] several times to close a
multi-function screen, if necessary.
w Push the [EXIT/SET] switch for 1 sec. to enter set
mode.
e Push the [(F-3)DSP] switch to enter the DSP lter
set mode.
r Push one of [(F2)SSB-FIL] or [(F4)CW-FIL] to se-
lect the desired DSP filter shape from sharp and
soft for SSB or CW mode, respectively.
t Push [ENTER/SET] twice to exit the DSP lter set
mode.
AGC
AGC
MID
MID
BK-IN
BK-IN
OFF
OFF
1/4
1/4
OFF
OFF
DSP FILTER SET
SSB
SSB
SHARP
SHARP
CW
CW
SHARP
SHARP
SSB-FIL
SSB-FIL
CW-FIL
CW-FIL
SSB
SSB
SOFT
SOFT
CW
CW
SOFT
SOFT
F-4
Push
F-2
Push
IC-756PROII.qxd 02.1.8 15:52 Page 67
68
9
SET MODE
Timer set mode
TTiimmee ((NNooww))
This item sets the current time for the built-in 24-hour
clock.
See p. 62 for details.
1155::0000
Push [(F-4)SET] to enter the time.
TTiimmeerr FFuunnccttiioonn
This item sets the timer functions ON and OFF.
When the power-ON timer or the power-OFF timer is
used, ON must be selected in this item.
See p. 62 for details.
OONN
The timer functions can be
operated. (default)
OOFFFF
The timer functions cannot
be operated.
PPoowweerr--OOFFFF ppeerriioodd
This item sets the power-off period for automatic shut-
down after the power-on timer has turned power ON.
See p. 63 for details.
6600mmiinn
Push [(F-4)SET] to enter the time.
PPoowweerr--OONN TTiimmeerr sseett
This item sets the power-on time.
See p. 63 for details.
1155::0000
Push [(F-4)SET] to enter the time.
Miscellaneous (others) set mode
CCaalliibbrraattiioonn MMaarrkkeerr
This item is used for a simple frequency check of the
transceiver.
See p. 77 for calibration procedure.
Turn the calibration marker OFF after checking the
frequency of the transceiver.
OONN
Calibration marker ON
OOFFFF
Calibration marker OFF
(default)
BBeeeepp((CCoonnffiirrmmaattiioonn))
A beep sounds each time a switch is pushed to con-
rm it. This function can be turned OFF for silent op-
eration.
The volume level can be set in level set mode. (p. 65)
OONN
Conrmation beep ON
(default)
OOFFFF
Conrmation beep OFF
BBeeeepp((BBaanndd EEddggee))
A beep sounds when an operating frequency enters
or exits an amateur band. This functions independent
of the conrmation beep setting (above).
The volume level can be set in level set mode. (p. 65)
OONN
Band edge beep ON
(default)
OOFFFF
Band edge beep OFF
IC-756PROII.qxd 02.1.8 15:52 Page 68
69
9
SET MODE
Miscellaneous (others) set mode (continued)
QQuuiicckk DDuuaallwwaattcchh
When this item is set to ON, pushing [DUALWATCH]
for 1 sec. sets the sub readout frequency to the main
readout frequency and activates dualwatch operation.
See p. 31 for details.
OONN
Quick dualwatch ON
(default)
OOFFFF
Quick dualwatch OFF
QQuuiicckk SSPPLLIITT
When this item is set to ON, pushing [SPLIT] for 1
sec. sets the sub readout frequency to the main read-
out frequency and activates split operation.
See p. 33 for details.
OONN
Quick split ON
(default)
OOFFFF
Quick split OFF
RRFF//SSQQLL CCoonnttrrooll
The [RF/SQL] control can be set as the RF/squelch
control (default), the squelch control only (RF gain is
xed at maximum) or Auto(RF gain control in SSB,
CW and RTTY; squelch control in AM and FM).
See p. 3 for details.
RRFF++SSQQLL
[RF/SQL] control as RF/squelch control
(default)
SSQQLL
[RF/SQL] control as squelch control
AAUUTTOO
[RF/SQL] control as RF gain control in SSB,
CW and RTTY; squelch control in AM and
FM
FFMM SSPPLLIITT OOffffsseett((HHFF))
This item sets the offset (difference between transmit
and receive frequencies) for the quick split function.
However, this setting is used for HF bands in FM
mode only and is used to input the repeater offset for
an HF band.
The offset frequency can be set from 4 MHz to
+4 MHz in 1 kHz steps.
--00..110000MMHHzz
Minus 0.1 MHz offset
(default)
--44..000000MMHHzz
Minus 4.0 MHz offset
FFMM SSPPLLIITT OOffffsseett((5500MM))
This item sets the offset (difference between transmit
and receive frequencies) for the quick split function.
However, this setting is used for 50 MHz band FM
mode only, and is used to input the repeater offset for
the 50 MHz band.
The offset frequency can be set from 4 MHz to
+4 MHz in 1 kHz steps.
--00..550000MMHHzz
Minus 0.5 MHz offset
(default)
++44..000000MMHHzz
Plus 4.0 MHz offset
SSPPLLIITT LLOOCCKK
When this item is ON, the tuning dial can be used to
adjust the transmit frequency while pushing [XFC]
even while the lock function is activated.
See p. 32 for split frequency operation details.
OONN
Split lock function ON
OOFFFF
Split lock function OFF
(default)
IC-756PROII.qxd 02.1.8 15:52 Page 69
70
9
SET MODE
Miscellaneous (others) set mode (continued)
TTuunneerr ((AAuuttoo SSttaarrtt))
The internal antenna tuner has an automatic start ca-
pability which starts tuning if the SWR is higher than
1.53:1.
When OFF is selected, the tuner remains OFF even
when the SWR is poor (1.53:1). When ON is se-
lected, automatic tune starts even when the tuner is
turned OFF.
OONN
Automatic tuner start
ON
OOFFFF
Automatic tuner start
OFF (default)
TTuunneerr ((PPTTTT SSttaarrtt))
Tuning of the internal antenna tuner can be started
automatically at the moment the PTT is pushed after
the operating frequency is changed (more than 1%
from last-tuned frequency).
OONN
Automatic PTT start
ON
OOFFFF
Automatic PTT start
OFF (default)
RRTTTTYY MMaarrkk FFrreeqquueennccyy
This item selects the RTTY mark frequency. RTTY
mark frequency is switched between 1275, 1615 and
2125 Hz.
22112255
2125 Hz RTTY mark
frequency (default)
11227755
1275 Hz RTTY mark
frequency
RRTTTTYY SShhiifftt WWiiddtthh
This item adjusts the RTTY shift width. There are 3
selectable values: 170, 200 and 425 Hz.
117700
170 Hz RTTY shift
frequency (default)
442255
425 Hz RTTY shift
frequency
RRTTTTYY KKeeyyiinngg PPoollaarriittyy
This item selects the RTTY keying polarity. Normal or
reverse keying polarity can be selected.
When reverse polarity is selected, Mark and Space
are reversed.
- Normal : Key open/close = Mark/Space
- Reverse : Key open/close = Space/Mark
NNoorrmmaall
Normal polarity (default)
RReevveerrssee
Reverse polarity
[[AANNTT]] SSwwiittcchh
You can set the antenna connector selection to auto-
matic, manual or non-selection (when using 1 an-
tenna only).
When Auto is selected, the antenna switch is acti-
vated and the band memory memorizes the selected
antenna. See p. 46 for details.
When Manual is selected, the antenna switch is ac-
tivated and selects an antenna manually.
When OFF is selected, the antenna switch is not ac-
tivated and does not function. The [ANT1] connector
is always selected in this case.
AAuuttoo
Antenna switch is activated and the
selection is automatically memorized.
(default)
MMaannuuaall
Antenna switch is activated.
OOFFFF
Antenna switch is deactivated and
[ANT1] is always selected.
IC-756PROII.qxd 02.1.8 15:52 Page 70
71
9
SET MODE
Miscellaneous (others) set mode (continued)
RRTTTTYY DDeeccooddee UUSSOOSS
This item selects the USOS (UnShift On Space) func-
tion of the internal RTTY decoder.
OONN
Decode as letter code
(default)
OOFFFF
Decode as character code
RRTTTTYY DDeeccooddee NNeeww LLiinnee CCooddee
This item selects the new line code of the internal
RTTY decoder.
CR : Carriage Return
LF : Line Feed
CCRR,,LLFF,,CCRR++LLFF
CR, LF and CR+LF
(default)
CCRR++LLFF
CR+LF only
SSPPEEEECCHH LLaanngguuaaggee
When the optional UT-102
VOICE SYNTHESIZER UNIT
is
installed, you can select between English and Japan-
ese as the language.
See p. 74 for unit installation.
EEnngglliisshh
English announcement
(default)
JJaappaanneessee
Japanese announcement
SSPPEEEECCHH SSppeeeedd
When the optional UT-102
VOICE SYNTHESIZER UNIT
is
installed, you can select between faster or slower
synthesizer output.
See p. 74 for unit installation.
HHIIGGHH
Faster announcement
(default)
LLOOWW
Slower announcement
SSPPEEEECCHH SS--LLeevveell
When the optional UT-102
VOICE SYNTHESIZER UNIT
is
installed, you can have frequency, mode and signal
level announcement. Signal level announcement can
be deactivated if desired.
When OFF is selected, the signal level is not an-
nounced.
See p. 74 for unit installation.
OONN
Signal level announcement
(default)
OOFFFF
No signal level
announcement
MMeemmoo PPaadd NNuummbbeerrss
This item sets the number of memo pad channels
available. 5 or 10 memo pads can be set.
55
5 memo pads
(default)
1100
10 memo pads
IC-756PROII.qxd 02.1.8 15:52 Page 71
72
9
SET MODE
Miscellaneous (others) set mode (continued)
MMAAIINN DDIIAALL AAuuttoo TTSS
This item sets the auto tuning step function. When ro-
tating the tuning dial rapidly, the tuning step automat-
ically changes several times as selected.
There are 2 type of auto tuning steps: HIGH (Fastest)
and LOW (Faster).
HHIIGGHH
Auto tuning step is turned ON.
Fastest tuning step during rapid rotation
(default)
LLOOWW
Auto tuning step is turned ON.
Faster tuning step during rapid rotation
OOFFFF
Auto tuning step is turned OFF.
SSSSBB//CCWW SSyynncchhrroonnoouuss TTuunniinngg
This item selects the displayed frequency shift func-
tion from ON and OFF.
When this function is activated, the receiving signal
can be kept to receive even when the operating mode
is changed between SSB and CW.
The frequency shifting value may differ according
to the CW pitch setting.
OONN
The displayed frequency
shifts when the operating
mode is changed between
SSB and CW.
OOFFFF
The displayed frequency
does not shift.
(default)
CCWW NNoorrmmaall SSiiddee
Selects the carrier point of CW mode from LSB and
USB.
LLSSBB
The carrier point is set to
LSB side.
(default)
UUSSBB
The carrier point is set to
USB side.
MMIICC UUpp//DDoowwnn SSppeeeedd
This item sets the rate at which frequencies are
scanned when the microphone [UP]/[DN] switches
are pushed and held. High or low can be selected.
HHIIGGHH
High speed (default,
50 tuning steps/sec.)
LLOOWW
Low speed
(25 tuning steps/sec.)
QQuuiicckk RRIITT//TTXX CClleeaarr
This item selects the RIT/TX frequency clearing in-
struction with the [CLEAR] switch.
OONN
Clears the RIT/TX fre-
quency when [CLEAR] is
pushed momentarily.
OOFFFF
Clears the RIT/TX fre-
quency when [CLEAR] is
pushed for 1 sec.
(default)
IC-756PROII.qxd 02.1.8 15:52 Page 72
73
9
SET MODE
Miscellaneous (others) set mode (continued)
EExxtteerrnnaall KKeeyyppaadd
This item sets the external keypad capability and
function.
For your information
The following diagram shows the equivalent circuit of
an external keypad and connects to the pin 3 and
pin 7of the [MIC] connector (p. 9).
AAuuttoo
Pushing one of external keypad
switches, transmits the desired voice
memory during a phone mode (SSB,
AM or FM), or memory keyer contents
during CW mode operation.
VVOOIICCEE PPLLAAYY((TTXX))
Pushing one of external keypad
switches, transmits the desired voice
memory contents during a phone
mode operation.
KKEEYYEERR SSEENNDD
Pushing one of external keypad
switches, transmits the desired keyer
memory contents during CW mode
operation.
OOFFFF
External keypad does not function.
(default)
To [MIC] connector pin e
To [MIC] connector pin u
1.5k
±
5%
1.5k
±
5%
2.2k
±
5%
4.7k
±
5%
S1
(T1/M1)
S2
(T2/M2)
S3
(T3/M3)
S4
(T4/M4)
USER EXTERNAL KEYPAD
CCII--VV BBaauudd RRaattee
This item sets the data transfer rate. 300, 1200, 4800,
9600, 19200 bps and Auto are available.
When Auto is selected, the baud rate is automati-
cally set according to the connected controller or re-
mote controller.
AAuuttoo
Auto baud rate
(default)
1199220000
19200 bps
CCII--VV AAddddrreessss
To distinguish equipment, each CI-V transceiver has
its own Icom standard address in hexadecimal code.
The IC-756PROIIs address is 64h.
When 2 or more IC-756PROIIs are connected to an
optional CT-17
CI
-
V LEVEL CONVERTER
, rotate the tun-
ing dial to select a different address for each IC-
756PROII in the range 01h to 7Fh.
6644hh
Address of 64h
(default)
77FFhh
Address of 7Fh
CCII--VV TTrraannsscceeiivvee
Transceive operation is possible with the IC-
756PROII connected to other Icom HF transceivers
or receivers.
When ON is selected, changing the frequency, op-
erating mode, etc. on the IC-756PROII automatically
changes those of connected transceivers (or re-
ceivers) and vice versa.
OONN
Transceive ON
(default)
OOFFFF
Transceive OFF
CCII--VV wwiitthh IICC--773311
When connecting the IC-756PROII to the IC-735 for
transceive operation, you must change the operating
frequency data length to 4 bytes.
This item must be set to ON only when operating the
transceiver with the IC-735.
OONN
4 bytes of frequency data
OOFFFF
5 bytes of frequency data
(default)
IC-756PROII.qxd 02.1.8 15:52 Page 73
10
74
OPTION INSTALLATION
Follow the case and cover opening procedures shown
here when you want to install an optional unit or adjust
the internal units, etc.
CAUTION: DISCONNECT the DC power cable
from the transceiver before performing any work on
the transceiver. Otherwise, there is danger of elec-
tric shock and/or equipment damage.
Opening the transceivers case
The UT-102 announces the accessed readouts fre-
quency, mode, etc. (S-meter level can also be an-
nouncedp. 71) in a clear, electronically-generated
voice, in English (or Japanese).
Push [LOCK/SPEECH] for 1 sec. to announce the
frequency, etc.
q Remove the top and bottom covers as shown
above.
w Remove the protective paper attached to the bot-
tom of the UT-102 to expose the adhesive strip.
e Plug UT-102 into J3502 on the MAIN unit as
shown in the diagram at right.
r Adjust the trimmer SPCH to set the speech level if
desired. Refer to inside views on p. 78.
t Return the top and bottom covers to their original
positions.
UT-102
UT-102
J3502
UT-102
VOICE SYNTHESIZER UNIT
q Remove 2 screws from the left side of the trans-
ceiver to remove the carrying handle as shown
below.
w Remove 7 screws from the top of the transceiver
and 4 screws from the sides, then lift up the top
cover.
e Turn the transceiver upside down.
r Remove 6 screws from the bottom of the trans-
ceiver, then lift up the bottom cover.
IC-756PROII.qxd 02.1.8 15:52 Page 74
11
75
MAINTENANCE
SCAN
Troubleshooting
The following chart is designed to help you correct
problems which are not equipment malfunctions.
If you are unable to locate the cause of a problem or
solve it through the use of this chart, contact your near-
est Icom Dealer or Service Center.
PROBLEM POSSIBLE CAUSE SOLUTION REF.
RECEIVE
POWER
TRANSMIT
Power does not come on
when the [POWER] switch
is pushed.
No sounds come out from
the speaker.
Sensitivity is too low, and
only strong signals are au-
dible.
Received audio is unclear
or distorted.
The [ANT] switch does not
function
Transmitting is impossible.
Output power is too low.
No contact possible with
another station.
Transmit signal is unclear
or distorted.
Repeater cannot be ac-
cessed.
Programmed scan does
not stop.
Programmed scan does
not start.
Memory scan does not
start
Select memory scan does
not start
Power cable is improperly connected.
Fuse is blown.
Volume level is too low.
The squelch is closed.
The transceiver is in transmitting condition.
The antenna is not connected properly.
The antenna for another band is selected.
The antenna is not properly tuned.
The attenuator is activated.
Wrong operating mode is selected.
PBT function is activated.
Noise blanker is turned ON when receiving a
strong signal.
Preamp is activated.
The noise reduction is activated and the [NR]
control is too far clockwise.
The antenna switch has not been activated.
The operating frequency is not set to a ham
band.
[RF POWER] is set too far counterclockwise
[MIC GAIN] is set too far counterclockwise
The antenna for another band is selected.
The antenna is not properly tuned.
RIT or TX function is activated.
Split frequency function and/or dualwatch are
activated.
[MIC GAIN] is set too far clockwise
Split frequency function is not activated.
Programmed subaudible tone frequency is
wrong.
Squelch is open.
[RF/SQL] is assigned to RF gain control and
squelch is open.
The same frequencies have been programmed
in scan edge memory channels P1 and P2.
2 or more memory channels have not been
programmed.
2 or more memory channels have not been
designated as select channels.
Re-connect the DC power cable correctly.
Check for the cause, then replace the fuse with
the spare one.
(Fuses are installed in the DC power cable and
the internal PA unit.)
Rotate [AF] clockwise to obtain a suitable lis-
tening level.
Turn [RF/SQL] to 10 oclock position to open the
squelch.
Push [TRANSMIT] to receive or check the
SEND line of an external unit, if desired.
Re-connect to the antenna connector.
Select an antenna suitable for the operating fre-
quency.
Push [TUNER] for 1 sec. to manually tune the
antenna.
Push [ATT] several times to select ATT OFF.
Select a suitable operating mode.
Push [PBT CLR] for 1 sec. to reset the function.
Push [NB] to turn the noise blanker OFF.
Push [P.AMP] once or twice to turn the function
OFF.
Set the [NR] control for maximum readability.
Set the antenna switch in set mode to Auto or
Manual.
Set the frequency to a ham band.
Rotate [RF POWER] clockwise.
Set [MIC GAIN] to a suitable position.
Select an antenna suitable for the operating fre-
quency.
Push [TUNER] for 1 sec. to manually tune the
antenna.
Push [RIT] or [TX] to turn the function OFF.
Push [SPLIT] and/or [DUALWATCH] to turn the
function OFF.
Set [MIC GAIN] to a suitable position.
Push [SPLIT] to to turn the function ON
Reset the frequency using set mode.
Set [RF/SQL] to the threshold point.
Reset [RF/SQL] control assignment and set it to
the threshold point.
Program different frequencies in scan edge
memory channel P1 and P2.
Program more than 2 memory channels.
Designate more than 2 memory channels as se-
lect channels for the scan.
p. 17
p. 76
p. 2
p. 3
p. 2
pgs. 5,
46
p. 49
p. 5
p. 25
p. 25
p. 27
p. 5
p. 26
p. 46
p. 23
p. 3
p. 2
p. 5
p. 49
p. 6
pgs. 7,
31, 32
p. 2
p. 7
p. 47
p. 3
pgs. 3,
69
p. 53
p. 53
pgs. 52,
60
IC-756PROII.qxd 02.1.8 15:52 Page 75
76
11
MAINTENANCE
Fuse replacement
If a fuse blows or the transceiver stops functioning, try
to nd the source of the problem, and replace the dam-
aged fuse with a new, rated fuse.
CAUTION: DISCONNECT the DC power cable
from the transceiver when changing a fuse.
The IC-756PROII has 2 types of fuses installed for
transceiver protection.
DC power cable fuses ................................FGB 30 A
Circuitry fuse ................................................FGB 5 A
DC POWER CABLE FUSE REPLACEMENT
30 A
fuse
Clock backup battery replacement
The transceiver has a lithium backup battery
(CR2032) inside for clock and timer functions. The
usual life of the backup battery is approximately 2
years.
When the backup battery is exhausted, the trans-
ceiver transmits and receives normally but cannot re-
tain the current time.
See p. 78 for battery location.
CR2032
CIRCUITRY FUSE REPLACEMENT
The 13.8 V DC from the DC power cable is applied to
all units in the IC-756PROII, except for the power am-
plier, through the circuitry fuse. This fuse is installed
in the PA unit.
q Remove the top cover as shown on p. 74.
w Remove 11 screws from the PA shielding plate,
then remove the plate.
e Replace the circuitry fuse as shown in the diagram
below.
r Replace the PA shielding plate and top cover.
Circuitry fuse (FGB 5 A)
PROBLEM POSSIBLE CAUSE SOLUTION REF.
DISPLAY
The displayed frequency
does not change properly.
The dial lock function is activated.
A set mode screen is selected.
The internal CPU has malfunctioned.
Push [LOCK/SPEECH] to turn the function OFF.
Push [EXIT/SET] several times to exit the set
mode screen.
Reset the CPU.
p. 46
pgs. 11,
64
p. 21
IC-756PROII.qxd 02.1.8 15:52 Page 76
77
11
MAINTENANCE
Tuning dial brake adjustment
The tension of the tuning dial may be adjusted to suit
your preference.
The brake adjustment screw is located on the right
side of the tuning dial. See the gure at right.
Turn the brake adjustment screw clockwise or coun-
terclockwise to obtain a comfortable tension level
while turning the dial continuously and evenly in one
direction.
Light
Heavy
Frequency calibration (approximate)
A very accurate frequency counter is required to cali-
brate the frequency of the transceiver. However, a
rough check may be performed by receiving radio
station WWV, or other standard frequency signals.
CAUTION: Your transceiver has been thor-
oughly adjusted and checked at the factory before
being shipped. You should not calibrate frequen-
cies, except for special reasons.
q Push [SSB] to select USB mode.
w Push [PBT CLR] for 1 sec. to clear the PBT set-
tings and make sure that the RIT/TX function is
not activated.
e Set the frequency to the standard frequency sta-
tion minus 1 kHz.
When receiving WWV (10.000.00 MHz) as a standard
frequency, set the operating frequency for
9.999.00 MHz.
Other standard frequencies can also be used.
r Push [EXIT/SET] several times to close a multi-
function screen, if necessary.
t Push [EXIT/SET] for 1 sec. to select the set mode
screen.
y Push [(F-5)OTHERS] to enter miscellaneous (oth-
ers) set mode.
u Push [(F-1)Y] several times to select the Calibra-
tion marker item.
i Rotate the tuning dial clockwise to turn the calibra-
tion marker ON.
Side tone may be heard.
o Adjust the calibration pot on the right side panel of
the transceiver for a zero beat with the received
standard signal as shown below.
Zero beat means that two signals are exactly the same
frequency, resulting in a single tone being emitted.
!0 Rotate the tuning dial counterclockwise to turn the
calibration marker OFF.
!1 Push [EXIT/SET] twice to exit set mode.
DEFDEF WIDEWIDE
é
è
AGCAGC
MIDMID
BK-INBK-IN
OFFOFF
1/41/4
OFFOFF
CalibrationCalibrationMarkerMarker ONON
Beep(Confirmation)Beep(Confirmation) ONON
Beep(BandBeep(Band Edge)Edge) ONON
RF/SQLRF/SQLControlControl RF+SQLRF+SQL
QuickQuick DualwatchDualwatch ONON
QuickQuick SPRITSPRIT ONON
FMFMSPLITSPLIT Offset(HF)Offset(HF) -0.100MHz-0.100MHz
OTHERSOTHERSSETSET
SFTSFT
0
FIL2FIL2
USBUSB
qw:pp
TXTX
USBUSB
o.ooo.pp
14.100.0014.100.00
1
VFOVFO
BWBW
2.4k2.4k
ANTANT
1
METERMETER
PoPo
IC-756PROII.qxd 02.1.8 15:52 Page 77
12
78
INTERNAL VIEWS
PA fuse (FGB 5 A)
PA unit
FILTER unit
Internal antenna
tuner
Top view
RF unit
PLL unit
Space for optional
voice synthesizer
(UT-102)
MAIN unit
Clock backup battery
SPCH
Optional voice
synthesizer level adj.
Bottom view
IC-756PROII.qxd 02.1.8 15:52 Page 78
13
79
CONTROL COMMAND
CI-V connection example
The transceiver can be connected through an optional
CT-17 CI-V LEVEL CONVERTER to a personal computer
equipped with an RS-232C port. The Icom Communi-
cations Interface-V (CI-V) controls the following func-
tions of the transceiver.
Up to 4 Icom CI-V transceivers or transceivers can be
connected to a personal computer equipped with an
RS-232C port. See p. 73 for setting the CI-V condition
using set mode.
Data format
The CI-V system can be operated using the following
data formats. Data formats differ according to com-
mand numbers. A data area or sub command is added
for some commands.
Controller to IC-756PROII
FE FE 64 E0 Cn Sc Data area FD
Preamble
code (fixed)
Transceivers
default address
Controllers
default address
Command number
(see the command table)
Sub command number
(see command table)
BCD code data for
frequency or memory
number entry
End of message
code (fixed)
OK message to controller
FE FE E0 64 FB FD
FE FE E0 64 FA FD
Preamble
code (fixed)
Controllers
default address
Transceivers
default address
OK code
(fixed)
End of message
code (fixed)
NG message to controller
NG code
(fixed)
IC-756PROII to controller
qwert y u
FE FE E0 64 Cn Sc Data area FD
qwert y u
Remote jack (CI-V) information
915 V
DC
personal
computer
ct- 17
BC-25
(optional)
IC-756PROII
mini-plug cable
Command table
Command Sub command Description
00 Send frequency data
01 Same as Send mode data
command 06
02 Read band edge frequencies
03 Read operating frequency
04 Read operating mode
05 Set frequency data
06 00 Select LSB
01 Select USB
02 Select AM
03 Select CW
04 Select RTTY
05 Select FM
07 Select CW-R
08 Select RTTY-R
07 Select VFO mode
B0 Exchange main and sub readouts
B1 Equalize main and sub readouts
C0 Turn the dualwatch OFF
Command Sub command Description
07 C1 Turn the dualwatch ON
D0 Select main readout
D1 Select sub readout
08 Select memory mode
00010101*
1
Select memory channel
*
1
P1=0100, P2=0101
09 Memory write
0A Memory to VFO
0B Memory clear
0E 00 Scan stop
01 Programmed/memory scan start
02 Programmed scan start
03 F scan start
12 Fine programmed scan start
13 Fine F scan start
22 Memory scan start
23 Select memory scan start
IC-756PROII.qxd 02.1.8 15:52 Page 79
80
13
CONTROL COMMAND
Command table (continued)
Command Sub command Description
0E A1A7 Set F scan span (A1=±5 kHz,
A2=±10 kHz, A3=±20 kHz,
A4=±50 kHz, A5=±100 kHz,
A6=±500 kHz, A7=±1 MHz)
B0 Set as non-select channel
B1 Set as select channel
D0 Set scan resume OFF
D3 Set scan resume ON
0F 00 Turn the split function OFF
01 Turn the split function ON
10 00 Select 10 Hz (1 Hz) tuning step
01 Select 100 Hz tuning step
02 Select 1 kHz tuning step
03 Select 5 kHz tuning step
04 Select 9 kHz tuning step
05 Select 10 kHz tuning step
06 Select 12.5 kHz tuning step
07 Select 20 kHz tuning step
08 Select 25 kHz tuning step
11 00 Attenuator OFF
06 Attenuator ON (6 dB)
12 Attenuator ON (12 dB)
18 Attenuator ON (18 dB)
12 00 Select/read antenna selection
01 (00=ANT1, 01=ANT2 : Add 0 or 1
to turn [RX ANT] OFF or ON, re-
spectively.)
13 00 Announce with voice synthesizer
01 (00=all data; 01=frequency and
02 S-meter level; 02=receive mode)
14 01 + Level data [AF] level setting (0=max. CCW to
255=max. CW)
02 + Level data [RF] level setting (0=max. CCW to
255=11 oclock)
03 + Level data [SQL] level setting (0=11 oclock to
255=max. CW)
06 + Level data [NR] level setting (0=min. to
255=max.)
07 + Level data Inside [TWIN PBT] setting or IF
shift setting (0=max. CCW,
128=center, 255=max. CW)
08 + Level data Outside [TWIN PBT] setting
(0=max. CCW, 128=center,
255=max. CW)
09 + Level data [CW PITCH] setting (0=low pitch to
255=high pitch)
0A + Level data [RF POWER] setting (0=mini. to
255=max.)
0B + Level data [MIC GAIN] setting (0=mini. to
255=max.)
0C + Level data [KEY SPEED] setting (0=slow to
255=fast)
0D + Level data [NOTCH] setting (0=low freq. to
255=high freq.)
0E + Level data [COMP] setting (0=mini. to
255=max.)
0F + Level data [BK-IN DELAY] setting (0=short
delay to 255=long delay)
10 + Level data [BAL] level setting (0=max. CCW,
128=center, 255=max. CW)
15 01 Read squelch condition
02 Read S-meter level
Command Sub command Description
16 02 Preamp (0=OFF; 1=preamp 1;
2=preamp 2)
12 AGC selection (1=Fast; 2=Mid;
3=Slow)
22 Noise blanker (0=OFF; 1=ON)
40 Noise reduction (0=OFF; 1=ON)
41 Auto notch (0=OFF; 1=ON)
42 Repeater tone (0=OFF; 1=ON)
43 Tone squelch (0=OFF; 1=ON)
44
Speech compressor (0=OFF; 1=ON)
45 Monitor (0=OFF; 1=ON)
46 VOX function (0=OFF; 1=ON)
47 Break-in (0=OFF; 1=semi break-
in; 2=full break-in)
48 Manual notch (0=OFF; 1=ON)
49 RTTY lter (0=OFF; 1=ON)
19 00 Read the transceiver ID
1A 00 Send/read memory contents (see
p. 82 for details)
01 Send/read band stacking register
contents (see p. 82 for details)
02 Send/read memory keyer con-
tents (see p. 82 for details)
03 Send/read the selected lter width
(0=50 Hz to 40/31=3600/2700 Hz)
04 Send/read the selected AGC time
constant (0=OFF, 1=0.1/0.3 sec. to
13=6.0/8.0 sec.)
0501 Send/read SSB TX Tone (Bass)
level (0 =min. to 10=max.)
0502 Send/read SSB TX Tone (Treble)
level (0=min. to 10=max.)
0503 Send/read MONITOR gain (0=min.
to 255=max.)
0504 Send/read CW side tone gain
(0=min. to 255=max.)
0505 Send/read CW side tone gain limit
(0=OFF, 1=ON)
0506 Send/read beep gain (0=min. to
255=max.)
0507 Send/read beep gain limit (0=OFF,
1=ON)
0508 Send/read LCD contrast (0=0% to
255=100%)
0509 Send/read LCD backlight (0=0% to
255=100%)
0510 Send/read LCD horizontal position
(0=1 to 7=8)
0511 Send/read switch backlight (0=1 to
7=8)
0512 Send/read display type (0=A, 1=B,
2=C, 3=D, 4=E, 5=F, 6=G, 7=H)
0513 Send/read display font (0=Basic1,
1=Basic2, 2=Pop, 3=7seg,
4=Italic1, 5=italic2, 6=Classic)
0514 Send/read memory name (0=OFF,
1=ON)
0515 Send/read my call setting (10-char-
acter: see p. 82)
0516 Send/read current time (0000 to
2359)
0517 Send/read power-ON timer set
(0000 to 2359)
IC-756PROII.qxd 02.1.8 15:52 Page 80
81
13
CONTROL COMMAND
Command table (continued)
Command Sub command Description
1A 0547 Send/read cut number style
(0=Normal, 1=190ANO,
2=190ANT, 3=90NO,
4=90NT)
0548 Send/read count up trigger chan-
nel (1=M1, 2=M2, 3=M3, 4=M4)
0549 Send/read present number
(19999)
0550 Send/read CW keyer repeat time
(1=1 sec. to 60=60 sec.)
0551 Send/read CW keyer dot/dash
ratio (28=1:1:2.8 to 45=1:1:4.5)
0552 Send/read rise time (0=2 msec.,
1=4 msec., 2=6 msec., 3=8 msec.)
0553 Send/read paddle polarity
(0=Normal, 1=Reverse)
0554 Send/read keyer type (0=Straight,
1=Bug-key, 2=ELEC-Key)
0555 Send/read mic. up/down keyer set
(0=OFF, 1=ON)
0556 Send/read scan speed (0=low,
1=high)
0557 Send/read scan resume (0=OFF,
1=ON)
0558 Send/read VOX gain (0=0% to
255=100%)
0559 Send/read anti VOX gain (0=0% to
255=100%)
0560 Send/read VOX delay (0=0.0 sec.
to 20=2.0 sec.)
0561 Send/read RTTY lter bandwidth
(0=250 Hz, 1=300 Hz, 2=350 Hz,
3=500 Hz, 4=1 kHz)
0562 Send/read twin peak lter (0=OFF,
1=ON)
0563 Send/read timer functions (0=OFF,
1=ON)
0564 Send/read DSP lter type
(0=SSB: sharp; CW: sharp,
1=SSB: sharp; CW: soft,
2=SSB: soft CW: sharp,
3=SSB: soft CW: soft)
0565 Send/read quick RIT/TX clear
function (0=OFF, 1=ON)
0566 Send/read SSB/CW synchronous
tuning function (0=OFF, 1=ON)
0567 Send/read CW normal side set
(0=LSB, 1=USB)
0568 Send/read external keypad type
(0=OFF, 1=Keyer send, 2=Voice
play (Tx), 3=Auto)
0569 Send/read NB level (0=0% to
255=100%)
06 Send/read DATA mode (0=OFF,
1=ON)
07 Send/read SSB transmit band-
width (0=Wide, 1=Middle, 2=Nar-
row)
1B 00 Set repeater tone frequency
01 Set tone squelch tone frequency
1C 00 Set the transceiver to receive or
transmit condition (0=Rx; 1=Tx)
Command Sub command Description
1A 0518 Send/read power-OFF period
(5=5 min. to 120=120 min. in
5 min. step)
0519 Send/read calibration marker
(0=OFF, 1=ON)
0520 Send/read conrmation beep
(0=OFF, 1=ON)
0521 Send/read band edge beep
(0=OFF, 1=ON)
0522 Send/read RF/SQL control set
(0=Auto, 1=SQL, 2=RF+SQL)
0523 Send/read quick dualwatch set
(0=OFF, 1=ON)
0524 Send/read quick split set (0=OFF,
1=ON)
0525 Send/read FM split offset (HF)
4.000 to +4.000 MHz
(see p. 82 for details)
0526 Send/read FM split offset (50 MHz)
4.000 to +4.000 MHz
(see p. 82 for details)
0527 Send/read split lock set (0=OFF,
1=ON)
0528 Send/read tuner auto start set
(0=OFF, 1=ON)
0529 Send/read PTT tune set (0=OFF,
1=ON)
0530 Send/read antenna selection
(0=OFF, 1=Manual, 2=Auto)
0531 Send/read RTTY mark frequency
(0=1275 Hz, 1=1615 Hz,
2=2125 Hz)
0532 Send/read RTTY shift width
(0=170 Hz, 1=200 Hz, 2=425 Hz)
0533 Send/read RTTY keying polarity
(0=Normal, 1=Reverse)
0534 Send/read RTTY decode USOS
(0=OFF, 1=ON)
0535 Send/read RTTY decode new line
code (0=CR,LF,CR+LF,
1=CR+LF)
0536 Send/read speech language
(0=English, 1=Japanese)
0537 Send/read speech speed (0=slow,
1=fast)
0538 Send/read S-level speech (0=OFF,
1=ON)
0539 Send/read memo pad numbers
(0=5 ch, 1=10 ch)
0540 Send/read main dial auto TS
(0=OFF, 1=Low, 2=High)
0541 Send/read mic. up/down speed
(0=Low, 1=High)
0542 Send/read CI-V transceive set
(0=OFF, 1=ON)
0543 Send/read CI-V 731 mode set
(0=OFF, 1=ON)
0544 Send/read TX spectrum scope set
(0=OFF, 1=ON)
0545 Send/read spectrum scope max.
hold set (0=OFF, 1=ON)
0546 Send/read voice auto monitor set
(0=OFF, 1=ON)
IC-756PROII.qxd 02.1.8 15:52 Page 81
To send/read memory contents
When sending or reading memory contents, additional code
as follows must be added to appoint the memory channel.
Additional code: 00000101 (0100=P1, 0101=P2)
Band stacking register
To send or read the desired band stacking registers con-
tents, combined code of the frequency band and register
codes as follows are used.
For example, when sending/reading the oldest contents in
the 21 MHz band, the code 0703 is used.
Frequency band code
Register code
Channel code for memory keyer
To send or read the desired memory keyer contents, the
channel and character codes as follows are used.
Channel code
Characters code
Characters code for my call
FM split frequency (HF/50 MHz) setting
The following data sequence is used when sending/reading
the FM split frequency setting.
1 kHz digit: 09
100 Hz digit: 0 (fixed)
100 kHz digit: 09
10 kHz digit: 09
10 MHz digit: 0 (fixed)
1 MHz digit: 04
Direction:
00=+ direction
01= direction
q
0XXXXXX
we
0
r
82
13
CONTROL COMMAND
Code Frequency band Frequency range (unit: MHz)
01 1.8 1.800000 1.999999
02 3.5 3.400000 4.099999
03 7 6.900000 7.499999
04 10 9.90000010.499999
05 14 13.90000014.499999
06 18 17.90000018.499999
07 21 20.90000021.499999
08 24 24.40000025.099999
09 28 28.00000029.999999
10 50 50.00000054.000000
11 GENE Other than above
Code Registered number
01 1 (latest)
02 2
03 3 (oldest)
Character ASCII code Description
093039 Numerals
AZ415A Alphabetical characters
az617A Alphabetical characters
space 20 Word space
/ 2F Symbol
? 3F Symbol
, 2C Symbol
. 2E Symbol
^ 5E e.g., to send
BT
, enter ^4254
2A Inserts contact number (can be
used for 1 channel only)
Code Channel number
01 M1
02 M2
03 M3
04 M4
Character ASCII code Description
093039 Numerals
AZ415A Alphabetical characters
az617A Alphabetical characters
space 20 Word space
2D Symbol
. 2E Symbol
/ 2F Symbol
IC-756PROII.qxd 02.1.8 15:52 Page 82
14
83
SPECIFICATIONS
General
Frequency coverage :
Rx 0.03060.000 MHz*
1
*
2
Tx 1.800 1.999 MHz*
2
3.500 3.999 MHz*
2
7.000 7.300 MHz*
2
10.10010.150 MHz*
2
14.00014.350 MHz*
2
18.06818.168 MHz*
2
21.00021.450 MHz*
2
24.89024.990 MHz*
2
28.00029.700 MHz*
2
50.00054.000 MHz*
2
*
1
Some frequency bands are not guaranteed.
*
2
Depending on version.
Mode : USB, LSB, CW, RTTY, AM, FM
No. of memory channels : 101
(99 regular, 2 scan edges)
Antenna connector : SO-239 ×2 and phono
(RCA; 50 )
Temperature range : 10˚C to +50˚C
; +14˚F to +122˚F
Frequency stability : Less than ±0.5 ppm 1 min. after
power ON.
(10 to +50˚C; +14 to
+122˚F)
Frequency resolution : 1 Hz
Power supply : 13.8 V DC ±15%
(negative ground)
Power consumption :
Transmit Max. power 23 A
Receive Standby 3.0 A (typ.)
Max. audio 3.5 A (typ.)
Dimensions : 340(W)× 111(H)× 285(D) mm
(projections not included) 13
3
8(W) ×4
3
8(H) ×11
7
32(D) in
Weight (approx.) : 9.6 kg; 21 lb 3 oz
ACC 1 connector : 8-pin DIN connector
ACC 2 connector : 7-pin DIN connector
CI-V connector : 2-conductor 3.5 (d) mm (
1
8)
Display : 5-inch
(diagonal) TFT color LCD
Transmitter
Output power (continuously adjustable):
SSB/CW/RTTY/FM Less than 5 to 100 W
AM Less than 5 to 40 W
Modulation system :
SSB PSN modulation
AM Low power modulation
FM Phase modulation
Spurious emission : 50 dB
(HF bands)
60 dB (50 MHz band)
Carrier suppression : 40 dB
Unwanted sideband : 55 dB
suppression
TX variable range : ±9.999 kHz
Microphone connector : 8-pin connector
(600 )
ELEC-KEY connector :
3-conductor 6.35(d) mm
(
1
4)
KEY connector :
3-conductor 6.35(d) mm
(
1
4)
SEND connector : Phono
(RCA)
ALC connector : Phono (RCA)
Receiver
Receive system : Triple conversion
superheterodyne system
Intermediate frequencies :
1st 64.455 MHz
2nd 455 kHz
3rd 36 kHz
Sensitivity (typical) :
SSB, CW, RTTY 0.16 µV
(1.8029.99 MHz)*
1
(10 dB S/N) 0.13 µV (50.054.0 MHz)*
2
AM (10 dB S/N) 13 µV (0.51.799 MHz)
2 µV
(1.8029.99 MHz)*
1
1 µV (50.054.0 MHz)
FM (12 dB SINAD) 0.5 µV (28.029.99 MHz)*
1
0.32 µV
(50.054.0 MHz)*
2
*
1
Pre-amp 1 is ON, *
2
Pre-amp 2 is ON
Squelch sensitivity (Pre-amp: OFF):
SSB, CW, RTTY Less than 5.6 µV
FM Less than 1 µV
Selectivity :
SSB, RTTY More than 2.4 kHz/6 dB
(BW: 2.4 kHz) Less than 3.6 kHz/60 dB
CW (BW: 500 Hz) More than 500 Hz/6 dB
Less than 700 Hz/60 dB
AM (BW: 6 kHz) More than 6.0 kHz/6 dB
Less than 15.0 kHz/60 dB
FM (BW: 15 kHz) More than 12.0 kHz/6 dB
Less than 20.0 kHz/60 dB
Spurious and image : More than 70 dB
rejection ratio
(except IF through on 50 MHz band)
AF output power : More than 2.0 W at 10%
(at 13.8 V DC) distortion with an 8 load
RIT variable range : ±9.999 kHz
PHONES connector : 3-conductor 6.35 (d) mm (
1
4)
External SP connector : 2-conductor 3.5 (d) mm
(
1
8
)/8
Antenna tuner
Matching impedance range:
HF bands 16.7 to 150 unbalanced
(Less than VSWR 3:1)
50 MHz band 20 to 125 unbalanced
(Less than VSWR 2.5:1)
Minimum operating input : 8 W
power
Tuning accuracy : VSWR 1.5:1 or less
Insertion loss
(after tuning) : Less than 1.0 dB
All stated specications are typical and subject to change without no-
tice or obligation.
IC-756PROII.qxd 02.1.8 15:52 Page 83
15
84
OPTIONS
IC-PW1 HF/50 MHz ALL BAND 1 kW LINEAR AMPLIFIER
Full-duty 1 kW linear amplier including an automatic antenna tuner. Has
automatic tuning and band selection capability. Full break-in (QSK) oper-
ation is possible. The amplier/power supply unit and the remote control
unit are separated.
AH-4 HF/50 MHz AUTOMATIC
ANTENNA TUNER
Specially designed to tune a long
wire antenna for portable or mobile
HF operation. The PTT tuner start
function provides simple operation.
Input power rating: 120 W
AH-2b ANTENNA ELEMENT
A 2.5 m long an-
tenna element for
mobile operation
with the AH-4.
Frequency
coverage:
754 MHz bands
with the AH-4
SM-20 DESKTOP MICROPHONE
Unidirectional, electret microphone
for base station operation. Includes
[UP]/[DOWN] switches and a low
cut function.
SP-21 EXTERNAL SPEAKER
Designed for base station opera-
tion.
Input impedance: 8
Max. input power: 5 W
CT-17 CI-V LEVEL CONVERTER
For remote transceiver control
using a personal computer. You
can change frequencies, operating
mode, memory channels, etc.
HM-36 HAND MICROPHONE
Hand microphone equipped with
[UP]/[DOWN] switches.
UT-102 VOICE SYNTHESIZER UNIT
Announces the receive frequency, mode
and S-meter level in a clear, electroni-
cally-generated voice, in English (or
Japanese).
SP-20 EXTERNAL SPEAKER
4 audio lters; headphone jack; can con-
nect to 2 transceivers.
Input impedance: 8
Max. input power: 5 W
PS-125 DC POWER SUPPLY
Light weight switching regulator
system power supply.
Output voltage: 13.8 V DC
Max. current drain: 25 A
About DC power supply
The use of IC-756PROII (#23, #24, #25, #28, #30) in com-
bination with the DC power supply complies with European
Harmonised Standard regulations under the conditions
listed below.
Conditions
In combination with PS-125
About IC-PW1
LINEAR AMPLIFIER
The IC-PW1
LINEAR AMPLIFIER
does not comply with Euro-
pean Harmonised Standard regulations. Please do not use
this equipment within European countries.
IC-756PROII.qxd 02.1.8 15:52 Page 84
16
85
ABOUT CE
INSTALLATION NOTES
For amateur base station installations it is recom-
mended that the forwards clearance in front of the an-
tenna array is calculated relative to the EIRP (Effective
Isotropic Radiated Power). The clearance height below
the antenna array can be determined in most cases
from the RF power at the antenna input terminals.
As different exposure limits have been recommended
for different frequencies, a relative table shows a
guideline for installation considerations.
Below 30 MHz, the recommended limits are specied
in terms of V/m or A/m elds as they are likely to fall
within the near-field region. Similarly, the antennae
may be physically short in terms of electrical length
and that the installation will require some antenna
matching device which can create local, high intensity
magnetic fields. Analysis of such MF installations is
best considered in association with published guidance
notes such as the FCC OET Bulletin 65 Edition 97-01
and its annexes relative to amateur transmitter instal-
lations. The EC recommended limits are almost identi-
cal to the FCC specied uncontrolled limits and tables
exist that show pre-calculated safe distances for differ-
ent antenna types for different frequency bands. Fur-
ther information can be found at http://www.arrl.org/.
Typical amateur radio installation
Exposure distance assumes that the predominant ra-
diation pattern is forwards and that radiation vertically
downwards is at unity gain (sidelobe suppression is
equal to main lobe gain). This is true of almost every
gain antenna today. Exposed persons are assumed to
be beneath the antenna array and have a typical
height to 1.8 m.
The gures assume the worst case emission of con-
stant carrier.
For the bands 10 MHz and higher the following power
density limits have been recommended:
1050 MHz 2 W/sq m
EIRP clearance heights by frequency band
1 Watts 2.1 m
10 Watts 2.8 m
25 Watts 3.4 m
100 Watts 5 m
1000 Watts 12 m
Forward clearance, EIRP by frequency band
100 Watts 2 m
1000 Watts 6.5 m
10,000 Watts 20 m
100,000 Watts 65 m
In all cases any possible risk depends on the transmit-
ter being activated for long periods. (actual recom-
mendation limits are specied as an average during 6
minutes) Normally the transmitter is not active for long
periods of time. Some radio licenses will require that a
timer circuit automatically cuts the transmitter after 12
minutes etc.
Similarly some types of transmitter, SSB, CW, AM etc.
have a lower average output power and the assessed
risk is even lower.
Versions of the IC-756PROII which display
the CE symbol on the serial number seal,
comply with the essential requirements of
the European Radio and Telecommunication
Terminal Directive 1999/5/EC.
This warning symbol indicates that this
equipment operates in non-harmonised fre-
quency bands and/or may be subject to li-
censing conditions in the country of use. Be
sure to check that you have the correct ver-
sion of this radio or the correct programming
of this radio, to comply with national licens-
ing requirement.
IC-756PROII.qxd 02.1.8 15:52 Page 85
<Intended Country of Use>
GER NED ITA AUT
BEL GRE GBR LUX
SWE IRL ESP DEN
FRA POR FIN SUI
IC-756PROII
#23 (Europe)
<Intended Country of Use>
GER NED ITA AUT
BEL GRE GBR LUX
SWE IRL ESP DEN
FRA POR FIN SUI
IC-756PROII
#24 (France)
<Intended Country of Use>
GER NED ITA AUT
BEL GRE GBR LUX
SWE IRL ESP DEN
FRA POR FIN SUI
IC-756PROII
#25 (Denmark)
<Intended Country of Use>
GER NED ITA AUT
BEL GRE GBR LUX
SWE IRL ESP DEN
FRA POR FIN SUI
IC-756PROII
#28 (Italy)
<Intended Country of Use>
GER NED ITA AUT
BEL GRE GBR LUX
SWE IRL ESP DEN
FRA POR FIN SUI
IC-756PROII
#30 (Spain)
1-1-32 Kamiminami, Hirano-ku, Osaka 547-0003 Japan
A-6072H-1EX-w
Printed in Japan
© 2001 Icom Inc.
IC-756PROII.qxd 02.1.8 15:52 Page Z
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