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iC- r8500
COMMUNICATIONS RECEIVER
INSTRUCTION MANUAL
Versions of the IC-R8500 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, and that any applicable Essential Test Suite
measurements have been performed.
UNPACKING
PRECAUTIONS
IMPORTANT
READ THIS INSTRUCTION MANUAL
CAREFULLY before attempting to operate the
receiver.
SAVE THIS INSTRUCTION MANUAL. This
instruction manual contains important safety and oper-
ating instructions for the IC-R8500.
EXPLICIT DEFINITIONS
RINDOOR USE ONLY! NEVER expose the
IC-R8500 or AC adapter to rain, snow or any liquids.
RNEVER connect the receiver to an AC outlet
directly. This may pose a fire hazard or result in an
electric shock. Always use the supplied AC adapter or
connect to a 13.8 V DC power source.
RNEVER connect to an AC outlet that exceeds the
suggested voltage for each AC adapter version. This
could cause a fire or ruin the AC adapter and/or
receiver.
RNEVER use non-rated fuses. Non-rated fuses
could cause a fire or ruin the receiver.
NEVER let metal, wire or other objects touch any
internal part or connectors on the rear panel of the
receiver. This will cause electric shock.
AVOID using or placing the receiver in areas with tem-
peratures below –10°C (+14°F) or above +50°C
(+122°F).
AVOID placing the receiver in excessively dusty envi-
ronments or in direct sunlight.
AVOID placing the receiver against walls or putting
anything on top of the receiver. This will obstruct heat
dissipation.
RESPECT other people’s privacy. Information over-
heard but not intended for you cannot lawfully be used
in any way.
i
Accessories included with the IC-R8500:
Qty.
q AC adapter (AD-55A)*........................................... 1
w DC power cable (OPC-023C) ................................ 1
e Mini plug (2-conductor, 3.5d) ................................. 1
r Phono (RCA) plugs ...............................................2
t Fuse (FGMB 125 V 3 A; internal use) ................... 1
y Fuses (FGB 3 A; for DC cable) .............................2
u Screws (M4 × 12 for optional MB-23) ..................... 2
i Screws (C0 3 × 8 for optional MB-23 feet) ............. 4
o Allen bolts (M5 × 8 for optional IC-MB12) ..............4
*Some versions are not supplied with an AC adapter.
q
w
e
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o
WORD DEFINITION
RWARNING
Personal injury, fire hazard or electric
shock may occur.
CAUTION
Equipment damage may occur.
NOTE
If disregarded, inconvenience only. No risk
of personal injury, fire or electric shock.
TABLE OF CONTENTS
IMPORTANT ............................................................. i
EXPLICIT DEFINITIONS .......................................... i
PRECAUTIONS ........................................................ i
UNPACKING............................................................. i
TABLE OF CONTENTS ............................................ ii
1 PANEL DESCRIPTION .....................................1–6
Front panel ................................................................... 1
Rear panel ...................................................................5
Function display ...........................................................6
2 CONNECTIONS ..............................................7–10
Mounting installation ....................................................7
Required connections ..................................................8
Antenna connection .....................................................9
Grounding ....................................................................9
Tape recorder connections ........................................ 10
Transceive function .................................................... 10
Connecting to a PC ................................................... 10
Data demodulation terminal ....................................... 10
3 FREQUENCY SETTING ................................ 11–12
Read me first .............................................................. 11
Using the keypad ....................................................... 11
Using the main dial ....................................................12
Lock function .............................................................. 12
4 RECEIVE FUNCTIONS ................................. 13–16
Initial settings .............................................................13
Mode selection ........................................................... 13
Squelch function ........................................................ 14
Functions for FM ........................................................ 14
Functions for SSB/CW ............................................... 14
Data communications .................................................16
5 MEMORY CHANNELS ..................................17–22
General ......................................................................17
Bank selection ........................................................... 17
Channel selection ...................................................... 18
Programming .............................................................19
Copy and paste (memory editing) .............................. 19
Clearing ..................................................................... 19
Channel/bank names ................................................. 20
Assigning channels numbers .....................................21
6 SCANS ..........................................................23–28
Operation ...................................................................23
Mode select function .................................................. 25
Specifying skip channel and frequency ..................... 25
Automatic bank limit/skip functions ............................ 26
Voice scan control function ........................................ 26
Programming scan edge frequencies ........................ 27
Scan speed/delay functions ....................................... 27
7 SLEEP TIMER .....................................................29
8 SET MODE ..........................................................30
General ......................................................................30
Quick set mode items ................................................ 31
Initial set mode items ................................................. 31
9 CONNECTOR INFORMATION ...................... 33– 34
10 CONTROL COMMANDS ............................ 35–36
Command table ......................................................... 35
Data format ................................................................35
11 MAINTENANCE ................................................. 37
Disassembly .............................................................. 37
Fuse replacement ......................................................37
Level adjustments ...................................................... 37
Memory backup ......................................................... 37
CPU resetting ............................................................ 37
Cleaning ..................................................................... 37
12 OPTIONAL INSTALLATIONS ..................... 38– 39
UT-102
VOICE SYNTHESIZER UNIT
................................ 38
FL-52A
CW NARROW FILTER
........................................ 38
CR-293
HIGH STABILITY CRYSTAL UNIT
......................... 39
13 TROUBLESHOOTING ................................. 40–41
14 SPECIFICATIONS .............................................42
15 OPTIONS ........................................................... 43
16 DOC ...................................................................44
ii
q POWER SWITCH [POWER]
Turns power ON and OFF.
w SLEEP/SET SWITCH [SLEEP/SET]
Push momentarily to set the sleep timer (p. 29).
Selectable times are 30, 60, 90, 120 min. or OFF.
” appears in the function display when the
sleep timer is set.
Push for 1 sec. to enter quick set mode (p. 30).
Use the [M-CH] selector and main dial to select items
and contents, respectively.
e
RECORDER REMOTE JACK [REC REMOTE] (p. 10)
Controls the running of a tape recorder for record-
ing. Connects to the REMOTE jack on a tape
recorder.
r RECORDER JACK [REC OUT] (p. 10)
Outputs an audio signal. Connect to the AUX or
LINE IN jack on a tape recorder.
t HEADPHONE JACK [PHONES]
Accepts headphones with 4–16 impedance.
When headphones are connected, no receive audio comes
from the speaker.
Stereo headphones can be connected, however, output
is monaural.
y MODE SWITCHES [WFM]/[FM]/[AM]/[SSB/CW]
(p. 13)
Push to select an operating mode.
The following keys toggle between several modes:
[FM] .................FM, FM narrow
[AM] .................AM, AM narrow, AM wide
[SSB/CW] ........USB, LSB, CW, optional CW narrow
When SSB/CW mode is selected, push [SSB/CW]
for 1 sec. to adjust the BFO frequency. (p. 15).
u NOISE BLANKER/AFC SWITCH [NB]/[AFC]
Activates the noise blanker function or automatic fre-
quency control function.
The noise blanker is used for removing pulse-type noise
when SSB, CW or AM mode is selected (p. 15).
The automatic frequency control tunes the displayed fre-
quency automatically when an off-center frequency is re-
ceived. It activates when FM or WFM is selected (p. 14).
i AUDIO FREQUENCY GAIN CONTROL
[AF GAIN] (p. 13)
Rotate clockwise to increase the audio output; rotate
counterclockwise to decrease the audio output.
o AUTOMATIC GAIN CONTROL [AGC] (p. 15)
Toggles the time constant of the AGC circuit be-
tween “slow” and “fast.”
When “fast” is selected, “AGC-F” appears.
Cannot be used in FM or WFM modes.
!0 SQUELCH CONTROL [SQUELCH] (p. 14)
Varies the squelch threshold level (to mute noise
when receiving no signal).
!1 IF SHIFT CONTROL [IF SHIFT] (p. 14)
Shifts the center frequency of the receiver’s IF pass-
band to reject interfering signals.
Cannot be used in FM, WFM and AM modes.
1
1
PANEL DESCRIPTION
MODE
WFM
NB/AFC AGC 10dB 20dB
FM AM
APF
TS
TS
SPCH
SSB/CW
AF GAIN SQUELCH
PHONES
REC OUT
SLEEP/
REC
REMOTE
IF SHIFTAPF
SET
LOCK
COMMUNICATION RECEIVER
iC- r8500
POWER
SIGNAL
S
13579
+
20dB
+
60dB
@0
q
w
e
r
t
yio!0 !1 !2 !3 !4u
FM
RECV
BANK
10-ATT-20
APF-NAGC-FAFCNB
SLEEP
LOCK
ICOM
S-meter squelch
threshold
Noise squelch
threshold (not
available in SSB,
CW, WFM and
AM narrow modes)
Signals below the
S-meter level
are muted.
Front panel
2
1
PANEL DESCRIPTION
!2 AUDIO PEAK FILTER CONTROL [APF] (p. 15)
Adjusts the audio peak lter setting to pick up a de-
sired audio frequency. Only valid when the [APF]
switch is ON.
Clockwise rotation adjusts the lter setting higher; coun-
terclockwise rotation adjusts the lter setting lower.
!3
ATTENUATOR SWITCHES [10dB]/[20dB]
Push to activate one of the attenuators.
Push [10dB] to activate the 10 dB attenuator.
Push [20dB] to activate the 20 dB attenuator.
Push [10dB] + [20dB] to activate the 30 dB attenuator.
10 dB and 30 dB attenuator cannot be used below 500 kHz.
!4 AUDIO PEAK FILTER SWITCH [APF] (p. 15)
Push momentarily to toggle the audio peak lter
circuit ON and OFF.
Use the [APF] control to adjust the center of the audio
peak passband.
When the audio peak lter circuit is ON, push for
1 sec. to toggle the lter setting between normal
and narrow.
•‘Narrow is available for SSB, CW and AM only.
!5
SPEECH/LOCK SWITCH [SPCH/LOCK]
Push momentarily to activate the voice synthesiz-
er function and have the displayed frequency
announced.
An optional UT-102
SPEECH SYNTHESIZER UNIT
is nec-
essary to activate the voice synthesizer function (p.38).
Automatic announcement at signal detection during
scan is available. Refer to the REC SPCH item on
p. 31 for details.
Push for 1 sec. to activate the lock function (p. 12).
Push for 1 sec. again to cancel the lock function.
The lock function action can be selected in set mode
to cover the main dial only, or to cover both the main
dial and front panel switches.
!6
TUNING STEP SWITCHES [TS]/[TS] (p. 12)
Select the tuning step for the main dial. Push [TS]
to select a larger tuning step; push [TS] to select
a smaller tuning step.
10 Hz, 50 Hz, 100 Hz, 1 kHz, 2.5 kHz, 5 kHz, 9 kHz, 10
kHz, 12.5 kHz, 20 kHz, 25 kHz, 100 kHz and 1 MHz are
selectable.
Programmable tuning steps can be set between 0.5 and
199.5 kHz.
To set programmable tuning steps, enter the desired
steps via the keypad, then push [TSY]or [TSZ].
!7
MAIN DIAL
Changes the operating frequency, set mode contents,
etc.
!8 BRAKE ADJUSTMENT SCREW
Adjusts the main dial tension.
!9 FUNCTION DISPLAY (p. 6)
Shows the selected frequency, mode, memory
name, etc.
@0 S-METER
Shows the strength of the received signal.
Shows the squelch threshold level when the
[SQUELCH] is rotated past the center position.
MEMO
SEL SKIP VSC
DLY
SCAN/
NAME
SCAN SET
PROG AUTO PRIO
M-SET BANK
M-CL MW
DELAY/SPEEDM-CH
D/S
1 QZ
GHI
PRS TUV WXY
ENT
BANK
BANK
JKL MNO
ABC DEF
.
;
,
4
78
0CE
ENT
M-CH
.
9
56
23
!9
!5
!6
!8
!7
SEL-CH SKIP-CH
OFF
kHz
DLY
M
IC-R8500
Center frequency
is shifted up.
Center frequency
is shifted down.
@1 MEMORY SET SWITCH [M-SET] (p. 19)
Used to copy and paste the displayed frequency
into another memory channel.
The rst push is used to copy ( appears), and the sec-
ond push is used to paste ( disappears).
Frequency, mode, tuning step, memory name, etc. can
be programmed into a temporary memory.
@2
MEMORY CLEAR SWITCH [M-CL] (p. 19)
Push and hold to clear the contents of the displayed
memory.
Bank names cannot be cleared.
@3
MEMORY WRITE SWITCH [MW] (p. 19)
Push and hold to store the displayed frequency,
mode, tuning step, etc. into the selected memory
channel.
@4 BANK SWITCH [BANK] (p. 17)
Push momentarily to toggle the bank limit func-
tion ON and OFF (p. 18).
While BANK appears, only memory channels within
the selected bank can be selected via the [M-CH] se-
lector.
Push for 1 sec. to increase/decrease the number of
memory channels in the selected bank (p. 21).
@5 MEMORY CHANNEL SELECTOR [M-CH] (p. 18)
Selects a memory channel in normal use.
Clockwise rotation selects higher memory channel
numbers; counterclockwise rotation selects lower
memory channel numbers.
Selects a set mode item when quick set mode or
initial set mode is selected (p. 30).
@6 DELAY/SPEED CONTROL [DELAY/SPEED] (p. 28)
Adjusts the scan delay time or scan speed depend-
ing on the [DLY ] switch setting.
When scan delay time is assigned, this control adjusts
the scan delay time (scan pausing interval) during signal
reception. This setting is effective when “” is
selected for the scan resume condition.
When scan speed is assigned, this control adjusts the
scan speed. In this case, scan delay time is determined
while setting.
@7
SCAN SWITCHES [SCAN ]
All of these switches are related to the scan function
in some way as follows:
[MEMO] (p. 23)
Push momentarily to start/stop memory scan.
Push numeral keys, then this key to start memo-
ry scan in the specied bank.
Push this key, then a mode switch to activate
mode select scan function.
Push for 1 sec. to set automatic bank and skip
functions.
The bank limit function and/or memory skip functions
are activated automatically when AUTO is selected
and scan is started.
[SEL] (p. 23)
Push momentarily to start/stop memory select
scan.
Push for 1 sec. to set the memory channel as a
select channel.
[PROG] (p. 24)
Push momentarily to start/stop programmed scan.
Push numeral keys, before or after pushing this
key to start programmed scan using the specied
scan edge group.
10 scan edge groups are available.
Push for 1 sec. to program scan edges for pro-
grammed scan.
M
M
3
1
PANEL DESCRIPTION
4
1
PANEL DESCRIPTION
[SKIP] (p. 25)
Push momentarily to toggle the skip function ON
and OFF for any scan.
Automatic skip activation is available with the [MEMO]
switch.
Push for 1 sec. to set the memory channel as a skip
channel.
[AUTO] (p. 24)
Push momentarily to start/stop auto write scan.
Push for 1 sec. to select the written memories
condition for the auto write scan.
Two conditions are available, clear auto-written mem-
ories before scan starts; and, keep auto written mem-
ories before scan start.
[VSC] (p. 26)
Push to toggle the voice scan control function ON
and OFF.
The VSC function resumes the scan when a detected sig-
nal does not contain voice components.
•“VSC appears while the voice scan control function is
activated.
[PRIO] (p. 25)
Push momentarily to start/stop priority scan.
Priority scan can be used in combination with other
scans.
Push for 1 sec. to enter the priority channel pro-
gramming condition.
[DLY ] (p. 27)
Push momentarily to select a scan resume condi-
tion.
OFF is underscored: scan pauses on a signal until it
disappears, then resumes 3 sec. after that.
DLY is underscored: scan resumes according to the
[DELAY/SPEED] control setting. When a signal dis-
appears, scan resumes 3 sec. later.
is underscored: scan is cancelled when receiving
a signal.
Push for 1 sec. to enter the delay time/scan speed
setting condition.
The function of the [DELAY/SPEED] control can be se-
lected.
@8
KEYPAD
The keypad can be used for several functions as below:
Keypad then [ENT] (then [MW])
Direct frequency input.
Keypad then [M-CH]
Memory channel selection.
[CE
NAME] then keypad
Alphanumeric input for memory, bank names, etc.
Keypad then [TSY] or [TSZ]
Arbitrary tuning step setting.
Keypad then [MEMO] or [SEL]
Specify memory bank then start memory scan or se-
lect memory scan.
Keypad then [PROG] or [AUTO]
Specify scan edge group, then start programmed
scan or auto write scan.
MEMO
SEL SKIP VSC
DLY
SCAN/
NAME
SCAN SET
PROG AUTO PRIO
M-SET BANK
M-CL MW
DELAY/SPEEDM-CH
D/S
1 QZ
GHI
PRS TUV WXY
ENT
BANK
BANK
JKL MNO
ABC DEF
.
;
,
4
78
0CE
ENT
M-CH
.
9
56
23
@2 @3@1 @4 @5 @6
@7
@8
SEL-CH SKIP-CH
OFF
kHz
DLY
M
IC-R8500
5
1
PANEL DESCRIPTION
Rear panel
q
RS-232C CONNECTOR (p. 10)
Connects an RS-232C cable. An RS-232C cable
can be used to connect the IC-R8500 to a PC. In this
way commands can be sent to the receiver via the
PC.
w CI-V REMOTE CONTROL JACK (p. 10)
Allows connection to an Icom CI-V system trans-
ceiver or another receiver for the transceive function.
Also connects to a PC with several receivers for
command control via an optional CT-17
CI
-
V LEVEL
CONVERTER
.
e IF OUT JACK
Outputs a 10.7 MHz IF signal with 9 V DC for an ex-
ternal equipment.
r AGC JACK (p. 16)
This jack has functions which are selectable through
internal receiver settings.
Outputs an AGC signal for an external equipment (de-
fault).
Outputs audio detected signal without de-emphasis for
9600 bps data detection (FM mode only).
t DC 13.8 V JACK (p. 8)
Plug in the jumper connector here when using the
supplied* AC adapter.
Connects to a 13.8 V DC power source using the
supplied DC cable when the AC adapter is not
connected.
*Not supplied with some versions.
y EXTERNAL SPEAKER JACK
Connects an 8 external speaker.
When an external speaker is connected, the internal
speaker does not function.
u DC IN JACK (p. 8)
Connects the supplied* AC adapter.
A regulator circuit has been designed between this con-
nector and the DC 13.8 V jack.
Be sure the jumper connector is connected to the DC
13.8 V jack.
*Not supplied with some versions.
i HF 50 ANTENNA CONNECTOR (p. 8)
Connects an antenna to cover the frequency range
below 30 MHz.
Use a coaxial cable and a PL-259 connector.
Be sure this connector is selected in quick set mode
(p. 31).
o GROUND TERMINAL (p. 9)
Connect this terminal to a ground.
!0 HF 500 ANTENNA CONNECTOR (p. 8)
When a 500 long wire antenna is used for HF band
receiving, this connector is used instead of the 50
antenna connector.
Set the HF ANT item to 500 to use this connector
(p. 31).
!1 VHF/UHF ANTENNA CONNECTOR (p. 8)
Connects an antenna to cover the frequency range
over 30 MHz.
Use a coaxial cable and type-N connector.
q w e r y u
t
o
i
!0!1
6
1
PANEL DESCRIPTION
Function display
q
REMOTE INDICATOR (p. 35)
Appears when a level control command is received from a
PC via CI-V data.
When this indicator appears, the control knobs setting is
ignored.
This indicator will disappear when the control knob is rotated.
w MODE INDICATORS (p. 13)
Show the operating mode.
e FREQUENCY READOUT
Shows the operating frequency.
r SKIP INDICATOR (p. 25)
Appears when the skip function is activated.
Flashes during scan when the skip function is ac-
tivated by the auto skip function.
t VSC INDICATOR (p. 26)
Appears when the voice scan control function is
activated.
y
SCAN RESUME CONDITION INDICATORS (p. 27)
Show the selected scan resume condition.
u TUNING STEP INDICATORS (p. 12)
Show the selected tuning step.
“” appears when a programmable tuning step is selected.
i TEMPORARY MEMORY INDICATOR (p. 19)
Appears when [M-SET] is pushed to indicate that
a frequency is being temporarily saved.
Disappears when the temporary memory is past-
ed into another memory channel.
o MEMORY CHANNEL READOUT (p. 17)
Shows the selected memory channel number.
!0 SKIP CHANNEL INDICATOR (p. 25)
Appears when the selected memory channel is set
as a skip channel.
!1 MEMORY NAME INDICATORS (p. 20)
Display names programmed into a memory, or scan
group.
!2 SELECT CHANNEL INDICATOR (p. 23)
Appears when the selected memory channel is set
as a select channel.
!3 BANK NUMBER INDICATOR (p. 17)
Shows the selected memory bank number.
!4 BANK INDICATOR (p. 18)
Appears when the bank limit function is activated.
Flashes during scan when the bank limit function
is activated by the auto bank function.
!5 BANK NAME INDICATOR (p. 20)
Displays names programmed into a bank.
!6 AUDIO PEAK FILTER INDICATOR (p. 15)
APF or APF-N appears when the audio peak l-
ter function is activated.
!7 ATTENUATOR INDICATORS
Appear when the RF attenuator is activated.
!8 AUTOMATIC GAIN CONTROL INDICATOR (p. 15)
AGC-F appears when AGC fast is selected; no indi-
cation appears when AGC slow is selected.
!9 RECEIVE INDICATOR
Appears while receiving.
@0 FM CENTER INDICATORS (p. 14)
Appear when the received signal is not tuned to its
center frequency.
@1 NOISE BLANKER INDICATOR (p. 15)
Appears when the noise blanker circuit is activated.
@2 AFC INDICATOR (p. 14)
Appears when the automatic frequency control
function is activated in either FM or WFM modes.
@3 LOCK INDICATOR (p. 12)
Appears when the main dial or front panel switches
are locked.
@4 SLEEP INDICATOR (p. 29)
Appears when the sleep timer is set.
P
REMOTE
WFM
RECV
AMUSBLSBCW
BANK
10-ATT-20
APF-NAGC-FAFCNB
SEL-CH SKIP-CH
WIDE NAR
SKIP VSC
OFF
MHz kHz
DLY
SLEEP
LOCK
M
P
qwerty
u
io!0!1!2!3!4!5!6!7!8!9@0 @0
@1
@2
@3
@4
7
2
CONNECTIONS
Mounting installation
D Location
Select a location for the receiver that allows adequate
air circulation and access to the front and rear panels.
Do not place in areas subject to extreme heat, cold, or
vibrations, or near TV sets, radios and electromagnetic
sources.
Be careful of the internal temperature of the receiver.
Installation into a rack or other enclosed area may in-
crease the internal temperature over the useable tem-
perature range. Specifications are not guaranteed
under such conditions.
D Receiver stand
The base of the IC-R8500 has an adjustable stand for
desktop use. Set the stand to one of two angles de-
pending on your operating conditions.
D Optional bracket and carrying handle
Mounting bracket
An optional mounting bracket is available to install the
radio under a table, on a wall, in a vehicle, etc.
Select an area to mount the receiver keeping in mind
that the weight of the IC-R8500 is approx. 7 kg.
Carrying handle
An optional handle allows you to easily carry and
transport the receiver.
Attach the MB-23
CARRYING HANDLE
with the supplied
rubber feet as shown.
CAUTION: The screws supplied with the MB-23
cannot be used with the IC-R8500. Use the screws
supplied with the IC-R8500 when attaching the
MB-23.
Flat washer
Spring
washer
Allen bolt
supplied with
the IC-R8500.
8
2
CONNECTIONS
Required connections
IC-R8500
Supplied DC power cable
Unplug the jumper plug
from the [DC13.8V] jack.
AC adapter AD-55/A/V
Connect
either power
source
The jumper plug must be
connected to the [DC 13.8V]
jack.
Ground connection (p. 9)
HF antennaLong wire antennaVHF/UHF wide band
antenna
Computer control
(p. 10)
External speaker
(p. 43)
High speed data
connection (p. 16)
0.1–30 MHz coverage0.1–30 MHz coverage30 MHz –2 GHz coverage
The optional AH-7000 is
available for 25 MHz to 1.3
GHz coverage.
Select the active antenna connector in quick set mode (p. 31)
9
2
CONNECTIONS
Antenna connection
Antennas play a very important role in receiver opera-
tion. Connecting a poor quality antenna to the
IC-R8500 will result in less than optimum performance.
The IC-R8500 requires at least 2 antennas for full fre-
quency coverage: one for 0.1 to 30 MHz and one for
30 to 2000 MHz.
D Using a long wire antenna for HF bands
The IC-R8500 has a 500 phono (RCA) antenna
connector for the HF bands. When using a long wire
antenna, instead of a 50 matched antenna, use one
as long as possible (at least 10 m, 33 ft) and select the
active connector as follows:
q Push [SLEEP/ ] for 1 sec. to enter quick set
mode.
w Rotate the [M-CH] selector to select the HF ANT
item.
e
Rotate the main dial to select the antenna connector.
r Push [SLEEP/ ] momentarily to exit quick set
mode.
Grounding
To prevent accidents involving electricity and interfer-
ence from transceivers, ground the receiver through
the [GND] terminal on the rear panel.
For best results, connect a heavy gauge cable to a
water pipe or long, earth-sunk copper rod. Make the
distance between the [GND] terminal and ground as
short as possible.
RWARNING: NEVER use a gas pipe or electri-
cal conduit pipe for grounding.
30 mm
10 mm (soft solder)
10 mm
12 mm
solder solder
Soft
solder
Coupling ring
PL-259 CONNECTOR INSTALLATION EXAMPLE
qe
r
w
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
solder the center con-
ductor.
(10 mm
3
8 in)
15 mm
Clamp
3 mm 6 mm
Center conductor
Washer
Nut Rubber gasket
TYPE-N CONNECTOR INSTALLATION EXAMPLE
qe
r
w
Slide the nut, washer,
rubber gasket and
clamp over the
coaxial cable, then
cut the end of the
cable evenly.
Soft solder the center
conductor. Install the
center conductor pin and
solder it.
Carefully slide the plug
body into place aligning
the center conductor pin
on the cable. Tighten the
nut onto the plug body.
Be sure the center
conductor is the same
height as the plug body.
Strip the cable and
fold the braid back
over the clamp.
(10 mm
3
8 in)
Plug body
No space
Solder hole
500 HF ANT
10
2
CONNECTIONS
Tape recorder connections
The [REC OUT] jack has 350 mV rms/4.7 k output
for connection to other audio equipment.
Transceive function
Icom CI-V transceivers or receivers can be connect-
ed via the [REMOTE] jack. The frequency and mode
become the same* when either radio is changed.
* When a set frequency is out-of-range for one of the con-
nected transceivers or receivers, the connected radios
frequency/mode does not change.
Connecting to a PC
Data demodulation terminal
See p. 16 for details regarding connection and opera-
tion.
The IC-R8500 can connect directly to a personal
computer providing control of multiple functions such
as instant frequency/name programming using
appropriate software. See pgs. 35, 36 for the control
command table.
Personal computer
IC-R8500
RS-232C
cable
13
25 14
2.RXD (data input)
3.TXD (data output)
1
20 6
8
IC-R8500
SCAN SET
[REC
REMOTE]
[REC OUT]
350 mVrms
4.7 k
[AUX IN] or
[LIVE IN] jack
Convenient:
When an optional UT-102
VOICE SYNTHESIZER UNIT
is
installed, detected frequencies during scanning can
be recorded. See pgs. 31, 32 for settings.
[REC REMOTE] jack: Grounds when a signal is
received and squelch opens. If a tape recorder has
a control terminal, this jack can be used for record-
ing control. (2 A/DC max.)
Connect to [REMOTE] jack
Be sure the CIV TRAN item is turned ON in initial set mode (p. 32).
A DB9/DB25 adapter may be
required depending on the PCs
connector.
15
4
RECEIVE FUNCTIONS
The noise blanker reduces pulse-type noise such as
that generated by automobile ignition systems. This
function is not effective for FM and WFM mode or for
non pulse-type noise and wide width pulses.
Push [NB] to toggle the noise blanker ON and OFF.
•“NB appears when the noise blanker is activated.
NOTE: When a strong signal is received while the
noise blanker is ON, the output audio may be dis-
torted. In such cases, the noise blanker should be
turned OFF.
The APF (audio peak lter) adjusts the peak fre-
quency of the received audio. The APF can be used
for adjusting the audio response. The IC-R8500 has
two selectable width lters.* Use the appropriate lter
width for optimum receiving.
q Push the [APF] switch.
w Rotate the [APF] control to adjust the peak fre-
quency.
e To change the lter width*, push [APF] for 1 sec.
*Available for SSB, CW and AM only.
BFO stands for beat frequency oscillator. This func-
tion is useful in conjunction with the IF shift function.
When eliminating interference with the IF shift func-
tion, the audio characteristics of the received signal
are often changed. Use the BFO adjustment function
to adjust the audio quality of the received signal to
that desired.
q Push [SSB/CW] to select SSB or CW mode.
w Push [SSB/CW] for 1 sec. to activate the function.
BFO appears.
e Rotate [M-CH] to adjust the BFO.
•–1.2 kHz to +1.2 kHz are selectable.
AGC stands for automatic gain control. This function
controls receiver gain to produce a constant audio
output level even when the received signal strength
is varied by fading, etc. Use AGC slow for normal
phone operation; AGC fast for receiving data and
searching for signals. AGC time constant cannot be
changed in FM and WFM modes.
Push [AGC] to toggle between AGC fast and slow.
AGC-F appears when AGC fast is selected; no indi-
cator appears when AGC slow is selected.
D Noise blanker
D Audio peak lter
D BFO adjustment
D AGC function
BFO
0.00kHz
ICOM-
RECV
AGC-F
NB OFF NB ON
500 1k 2k 5k [Hz]
40
30
20
10
0
[dB]
500 1k 2k 5k [Hz]
40
30
20
10
0
[dB]
APF is selected APF-N is selected
[NB/AFC]
switch
SCAN SET
[APF] control
[APF]
switch
SCAN SET
[SSB/CW]
switch
SCAN SET
[M-CH]
selector
[AGC]
switch
SCAN SET
BFO shift can be set for USB,
LSB and CW separately.
TU or TNC
AF IN
SQUELCH IN
to [REC OUT]
to [REC REMOTE]
SCAN SET
2-conductor 3.5(d) plugs
Personal computer
16
4
RECEIVE FUNCTIONS
Data communications
D Connections
D Receiving method
To use the [AGC] socket for AF output
Change the internal jumper plug as illustrated at
right.
The output is obtained for FM mode only.
Usable for 9600 bps only.
Refer to p. 37 for a description of opening the case.
q Connect a terminal unit as above.
w Select FM mode (or USB, CW modes for HF band
data communications).
e Set the receiver to the desired frequency as below.
r Set the connected terminal unit to the appropriate
settings.
Refer to the terminal units instructions.
Rear
panel
TU or TNC
to [AGC]
RCA plug
Personal computer
[Audio IN] or
[Detector IN]
For high speed data (9600 bps) reception in FM mode
For regular speed data (1200 bps or lower) reception in any mode
Frequency settings depend on the mode used.
FM mode: [Setting frequency(displayed freq.)]=[Desired freq.]
USB mode: [Setting frequency(displayed freq.)]=[Desired freq.][Center of Mark and Space freq.]
CW narrow mode: [Setting frequency(displayed freq.)]=[Desired freq.][Center of Mark and Space freq.]+[600 Hz]
LSB mode (for amateur RTTY): [Setting frequency(displayed freq.)]=[Desired freq.]+ [Mark freq.]
AGC output
(default)
AF direct detector
output
200 mVrms/4.7 k
17
5
MEMORY CHANNELS
To select regular channel banks:
Push [M-CH BANK
] or [ENT BANK
], one or more
times to select the desired channel bank.
The bank indicator shows the selected bank.
Push and hold [BANK
] or [BANK
] to quickly cycle
through the channel banks in the order to , FREE,
AUTO and SKIP.
NOTE: The FREE bank is initially blank and there-
fore cannot be selected. In order to select it at least
1 channel must be programmed into the FREE
bank. See p. 21.
Convenient: Bank names
The default names of USR-A to USR-T can be set
to your own preference. Refer to p. 20 for program-
ming.
To select the programmed scan edge:
Push [PROG] for 1 sec.
PROG and channel number (0P1 to 9P2) appear.
Bank selection
The IC-R8500 has 1000 regular memory channels,
plus 20 programmable scan edge channels and 1 pri-
ority channel. 8-digit memory names are programmed
into all 1000 channels and 5-digit bank names are
programmed into 20 user banks for convenient recall
and organisation of frequencies. Moreover, memory
channels can store mode information, a tuning step,
and ATT (attenuation) information.
NOTE: When memory channels without informa-
tion (blank channels) are selected, the frequency
is not displayed. Only the memory channel num-
ber appears.
The table below gives a general overview of the
IC-R8500s memory channels.
BANK
INITIAL CONTENTS
USAGE
40 memories ×
20 banks
For normal use. Frequency, mode, tuning step, name and ATT information can
be programmed. The number of channels in each bank is user-assignable.
Banks cannot be deleted (they must contain at least 1 channel).
100 memories
Frequencies detected during auto memory write scan are memorised into this
bank in sequence. Mode and tuning step are written at the same time. Note that
when the written memories condition is set as CL&START and auto write scan
is started, all memories in this bank are cleared.
100 memories
Undesired signals such as from beacons, control-coded signals, etc., can be pro-
grammed to be skipped during programmed scan and auto memory write scan.
When [MW] is pushed for 1 sec. while scan is paused, the displayed frequency
is programmed into this bank regardless of the selected bank.
Blank
For temporary storage when assigning channels to banks. Deleted channels
(contents have been cleared) are stored in this bank until being assigned to
another bank. This bank does not appear when no channel are assigned.
20 memories (xed)
Memorize scan edge frequencies. 10 pairs of scan edges (0P1 to 9P2) are pro-
grammable (upper and lower scan edges). Mode and tuning step are automati-
cally equalised to the last programmed channel in a pair.
General
ENT
BANK
BANK
.
;
,
ENT
M-CH
BANK
BANK
BANK
BANK
USR-A BLANK
BLANK
BLANK
BLANK
USR-B
BANK
BLANK
USR-T
AUTO
BANK
BLANK
FREE
SKIP
*NONAME*
PROG
AUTO
SKIP
FREE
PROG
18
5
MEMORY CHANNELS
q Select the desired bank using [
M-CH BANK
] or
[ENT BANK
].
w Rotate the [M-CH] selector to select the desired
channel.
Bank limit function
While rotating the [M-CH] selector, memory channels
can be selected from within the current bank only; or
from any bank.
Push [BANK] to toggle the bank limit function ON and
OFF.
Convenient: Automatic bank limit
When starting memory scan, the bank limit function
is activated automatically. This automatic selection
can be deactivated. See p. 26.
Memory channels in the current bank can only be
selected via the keypad.
q Select the desired bank using [M-CH BANK
] or
[ENT
BANK
].
w Push keys corresponding to the desired channel.
e Push the [M-CH] key to set the selected memory
channel.
Input for memory channels not available is cancelled.
Channel selection
D Using the [M-CH] selector
D Using the keypad
[M-CH] selector
[BANK ]
[BANK ]
[M-CH] key
[EXAMPLE]: Selecting channel 39 from within the currently selected bank
BANK
M
USR-A
BANK appearsBANK doesn't
appear
BANK
M
USR-A
BANK
SR-
SR-
Bank limit OFF
All memory channels can be
selected via the [M-CH]
selector. [BANK
]
/[BANK
]
can be used.
Bank limit ON
Only memory channels in
the current bank can be se-
lected. Banks can be se-
lected with the
[BANK
]/[BANK
] keys
only.
USR-A ABCD USR-A ABCD USR-A EFGH
WXY
BANK
DEF
.
;
,
M-CH
9
3
[EXAMPLE]: Selecting channel 12 from a different bank (bank 3)
USR-A EFGH USR-D IJKL USR-D MNOP
BANK
.
;
,
M-CH
BANK
.
;
,
M-CH
1 QZ ABC2
(3 times)
19
5
MEMORY CHANNELS
Programming
This is the method most often used to program mem-
ory channels.
q Select the desired memory channel.
w Set the desired frequency.
When the memory channel already contains information,
change the frequency using the main dial or the keypad.
When the memory channel is blank, use keypad entry
only to set the frequency.
e
Set operating mode (p. 13) and tuning steps (p. 12).
r Push and hold [MW] until the receiver emits 3
beeps.
The information is stored in the memory channel.
NOTE: When changing the memory channel
before pushing [MW], the set frequency (and
mode/tuning steps) is erased.
Copy and paste (memory editing)
When the frequency (and mode/tuning steps) is set
for a channel; or, when you want to change a fre-
quency using the contents of another memory chan-
nel, the copy/paste function is helpful to keep (or con-
rm) the previously programmed contents.
q Push [M-SET] to temporarily store the displayed
frequency, mode, etc.
•“M appears.
Only 1 channel can be stored in the temporary space.
w Select the memory channel you wish to program
the frequency into.
e Push [M-SET] again to paste the stored contents.
•“M disappears.
NOTE: Remember that pushing [MW] is always
necessary to program contents into a memory
channel. Pasted contents will be cleared if the
[MW] key is not pushed for 1 sec.
Clearing
Information programmed into a memory channel can
be cleared (erased).
q Select the memory channel to be cleared.
w Push and hold [M-CL] until the receiver emits 3
beeps.
Convenient: Bank assign function
Using the bank assign function, memory channels
can be removed (along with their programmed con-
tents) from a particular memory bank and placed
temporarily in the free bank. See p. 21.
[MW] key
Push for 1 sec.
USR-A
USR-A
BLANK
MW
FM
OFF
kHz
DLY
FM
OFF
kHz
DLY
[M-SET] key
[M-CL] key
20
5
MEMORY CHANNELS
Channel/bank names
Channel names of up to 8 characters and bank names
of up to 5 characters can be programmed for conve-
nience. Programmed names can be easily copied to
other channels using the copy/paste function.
q Select the desired memory channel.
w Set the frequency (and mode/tuning steps), then
push and hold the [MW] key.
When no data is programmed, BLANK appears and
memory names cannot be programmed.
e Push [CE
NAME].
A cursor appears at the rst character space of the
name area.
r Enter the desired name via the keypad.
Push the appropriate keys to input the desired charac-
ters.
To erase a character, overwrite with a space using the
[
M-CH
] key.
To move the cursor forwards or backwards, use the [
]
or [CE
] key.
t Push [ENT] to input the set name.
q Select the desired bank using [M-CH BANK
] or
[ENT BANK
].
w Push [CE
NAME].
A cursor appears at the rst character space of the
name area.
When no data is programmed, (BLANK appears) the
cursor does not appear. Program a frequency or
change the channel in such cases.
e Push [
] to move the cursor to the bank name
area.
r Enter the desired name via the keypad.
Use the same method as for channel names (see
above).
t Push [ENT] to input the set name.
NOTE: When using [CE
] on the last digit of the
bank name, the current name is cleared and the
previous one is substituted. DO NOT forget to
push [ENT] after the bank name is set.
[CE
s
NAME] key
1 QZ
ENT
BANK
ENT
WXY
9
NAME
CE
to
USR-A
USR-A
USR-A MEMONAME
USR-A MEMONAME
D Channel name programming
D Bank name programming
USR-A
USR-A
USR-A MEMONAME
MEMONAME
MEMONAME
BANKN MEMONAME
BANKN MEMONAME
ENT
BANK
ENT
.
NAME
CE
5 times
1 QZ
WXY
9
to
21
5
MEMORY CHANNELS
Assigning channel numbers
The IC-R8500 has 20 banks in which memory chan-
nels can be programmed and arranged. By default,
each bank contains 40 memory channels, however,
channels can be deleted from or added (inserted) to
banks to suit your preferences and operating style.
Deleted channels are stored temporarily in the
FREE bank.
NOTE: When shipped from the factory or after
resetting the receivers CPU, the FREE bank has
no memory channels and cannot be selected.
To rearrange bank channel assignments:
q Delete memory channels from banks that have
more memory channels than you need.
Deleted channels are assigned to the free bank auto-
matically.
w Add (or insert) memory channels to banks in which
you want to add channels.
Channels added to a bank are deleted from the free
bank.
q Select the bank and memory channel you wish to
delete.
w Push [BANK] for 1 sec.
One of INS. 1CH, DEL. 1CH, ADD.10CH, or
ADD. 1CH,appears and ashes.
Push [BANK] momentarily to exit the condition and
return to the previous display, if desired.
e Rotate [M-CH] until DEL. 1CH appears in the
display.
r Push [BANK] for 1 sec. to delete the selected
channel.
The memory channel (but not its contents) is moved to
the FREE bank.
Memory channels can only be deleted one at a
time to prevent accidental deletion of multiple
channels; when you want to delete more than
one channel from a bank, repeat the above
steps as many times as necessary.
NOTE1: Deleted channels are moved to the
free bank, however, the programmed contents
are erased.
NOTE2: The number of banks cannot be
decreased. This means that if there is only one
channel in a bank, it cannot be moved to the
free bank.
D Deleting memory channels
[BANK] switch
[
M-CH] control
USR-T DEL. 1CH
BLANK
USR-T
BANK
BANK
BANK
(for 1 sec.)
The number of channels in this bank is
decreased.
USR-T BLANK
INS. 1CH
USR-T
BANK
BANK
BANK
M-CH
(for 1 sec.)
22
5
MEMORY CHANNELS
q Select the bank you wish to add memory chan-
nel(s) to.
w Push [BANK] for 1 sec.
One of INS. 1CH, DEL. 1CH, ADD.10CH, or
ADD. 1CH,appears and ashes.
Push [BANK] momentarily to exit the condition and
return to the previous display, if desired.
e Rotate [M-CH] to select the following:
r Push [BANK] for 1 sec. to perform the selected
operation.
The memory channel(s) are deleted from the FREE
bank and added/inserted to the selected bank.
Memory channels cannot be added/inserted into a
memory bank when the FREE bank is empty.
D Adding/inserting memory channels
USR-T BLANK
USR-T
BANK
BANK
INS. 1CH
USR-T
BANK
BLANK
Insert 1 channel
USR-T
BANK
ADD. 1CH
Add 1 channel
USR-T
BANK
ADD.10CH
Add 10 channels
USR-T
BANK
DEL. 1CH
Delete channel
(see opposite page)
BANK
M-CH
(for 1 sec.)
BANK
(for 1 sec.)
INDICATION DESCRIPTION
INS. 1CH
1 channel will be inserted in front of
the selected channel.
Programmed contents after the inserted
channel are shifted accordingly.
ADD. 1CH
1 channel will be added at the end of
the selected bank.
ADD.10CH
10 channels will be added at the end
of the selected bank.
Operation
D Memory scan
D Memory select scan
23
6
SCANS
All memory channels (except skip channels) in the
selected bank are scanned at up to 40 ch/sec.
q Push [M-CH
BANK
] or [ENT
BANK
] to select
the desired bank.
Direct selection is also available as below.
w Set the [SQUELCH] control to the threshold point.
e Push [MEMO] to start the scan.
•“MEMO appears in the bank name area.
r Push [MEMO] again to stop the scan.
Convenient:
Direct bank selectionMemory scan can be started
in a specic bank without using [BANK
/
]:
Enter one or two digits for the bank number, then
push [MEMO].
Bank selection during memory scanThe selected
bank can be changed without stopping the scan:
Enter one or two digits for the bank number, then
push [ENT].
Bank limit and skip scan releaseWhen starting
memory scan, the bank limit and channel skip functions
are activated automatically. Refer to p. 26.
Memory select scan allows you to increase scan ef-
ciency by searching for specied channels only,
thereby increasing the rate at which the scan cycles
through the memory channels. Set high priority chan-
nels as select channels (memory select scan
searches for signals on these channels) while leaving
out lower priority channels.
Preparationspecifying select channels:
Select the channel you want to specify as a select
channel, then push [SEL] for 1 sec.
Start/stop:
q Select the desired bank using [
M-CH BANK
] or
[
ENT BANK
].
w Set the squelch control to the threshold point.
e Push [SEL] momentarily to start scan.
•“SEL appears in the bank name area.
r Push [SEL] again to stop the scan.
NOTE: Memory select scan does not start unless
2 or more channels in the bank are specied as
select channels.
Convenient:
The same convenient functions are available as de-
scribed above.
Mch 1
Mch 2
Mch 3
Mch 4
Mch 5
Mch 6
Mch 7
Mch 39
Skip
Select
Select
Select
Select
Push [MEMO]
FM
OFF
kHz
DLY
MEMO
MEMO appears
Push [SEL]
FM
OFF
kHz
DLY
SEL
SEL appears
Mch 1
Mch 2
Mch 3
Mch 4
Mch 5
Mch 6
Mch 7
Mch 39
Skip
Select
Select
Select
Select
Select
18

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