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INSTRUCTION MANUAL
iR2500
COMMUNICATION RECEIVER
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.
i
FOREWORD
Thank you for purchasing this Icom receiver. The IC-R2500
COMMUNICATIONS RECEIVER
is designed and built with Icom’s
state of the art technology and craftsmanship. With proper
care, this receiver should provide you with years of trouble-
free operation.
We want to take a couple of moments of your time to thank
you for making the IC-R2500 your radio of choice, and hope
you agree with Icom’s philosophy of “technology rst.” Many
hours of research and development went into the design of
your IC-R2500.
DD
FEATURES
Wide frequency coverage with all-mode re-
ceive
Both Remote controller operation and PC
control application are available
ANF and NR functions are available
(Only when the optional DSP unit is installed.)
IF shift function
Dualwatch operation/Diversity operation
DV and P25 Digital modes are available
(Only when the specific digital unit is installed.)
IMPORTANT
READ ALL INSTRUCTIONS carefully and completely
before using the receiver.
SAVE THIS INSTRUCTION MANUAL— This in-
struction manual contains important operating instructions for
the IC-R2500.
EXPLICIT DEFINITIONS
WORD DEFINITION
R WARNING!
CAUTION
NOTE
Personal injury, re hazard or electric shock
may occur.
Equipment damage may occur.
Recommended for optimum use. No risk of
personal injury, re or electric shock.
Icom, Icom Inc. and the logo are registered trademarks of Icom
Incorporated (Japan) in the United States, the United Kingdom, Ger-
many, France, Spain, Russia and/or other countries.
ii
SUPPLIED ACCESSORIES
q Antenna …………………………………………………… 1
w AC adapter* ……………………………………………… 1
e USB cable ………………………………………………… 1
r CD ………………………………………………………… 1
t Foot pad sheet……………………………………………… 1
y Cable hanger ……………………………………………… 1
*Not supplied with some versions.
y
t
re
qw
OPTIONS
UT-106*
DSP UNIT
Provides AF DSP functions such as noise reduction and auto
notch.
UT-108*
DTMF DECODER UNIT
Provides DTMF decode function for sub band.
UT-118*
DIGITAL UNIT
Provides DV (digital) mode operation.
UT-122*
DIGITAL UNIT
Provides P25 (digital) mode operation.
CP-12L
CIGARETTE LIGHTER CABLES
For operation and charging via a 12 V cigarette lighter socket.
OPC-254L
DC POWER CABLES
For operation and charging via an external power supply.
SP-10
EXTERNAL SPEAKER
For all-round mobile operation. Cable length: 1.5 m; 4.9 ft
OPC-1156
SEPARATION CABLE
For extended separate installation. 3.5 m; 11.5 ft
MB-84
REMOTE CONTROLLER BRACKET
Mounts the remote controller in a convenient location.
MB-65
MOUNTING BASE
Mounts the controller with the MB-84. Adjustable angle and direction
for optimum positioning.
*: The optional units UT-106, UT-108, UT-118, UT-122 installations
are described in the IC-PCR1500/IC-PCR2500’s Instruction man-
ual.
SPECIFICATIONS
Specications are provided in the IC-PCR1500/IC-PCR2500’s
Instruction manual.
iii
RWARNING! NEVER connect the receiver via the
OPC-254L to an AC outlet. This may pose a re hazard or re-
sult in an electric shock.
RWARNING! NEVER operate the receiver while dri-
ving a vehicle. Safe driving requires your full attention— any-
thing less may result in an accident.
NEVER connect the receiver to a power source of more
than 14 V DC. This will damage the receiver.
NEVER connect the receiver to a power source using re-
verse polarity. This will damage the receiver.
NEVER cut the DC power cable between the DC plug and
fuse holder. If an incorrect connection is made after cutting,
the receiver may be damaged.
DO NOT leave the main unit powered ON and connected
to a vehicle’s electrical system. The main unit draws approx.
550 mA. This will eventually drain the vehicle’s battery.
NEVER expose the receiver to rain, snow or any liquids.
The receiver may be damaged.
NEVER operate or touch the receiver with wet hands. This
may result in an electric shock or damage the receiver.
NEVER place the receiver where normal operation of the
vehicle may be hindered or where it could cause bodily injury.
NEVER let objects impede the operation of the cooling fan
on the rear panel.
AVOID using or placing the receiver in direct sunlight or in
areas with temperatures below –10°C (+14°F) or above
+60°C (+140°F).
BE CAREFUL! The receiver will become hot when op-
erating it continuously for long periods.
AVOID setting the receiver in a place without adequate
ventilation. Heat dissipation may be affected, and the receiver
may be damaged.
AVOID the use of chemical agents such as benzine or al-
cohol when cleaning, as they can damage the receiver’s sur-
faces.
For U.S.A. only
CAUTION: Changes or modications to this device, not ex-
pressly approved by Icom Inc., could void your authority to
operate this device under FCC regulations.
PRECAUTIONS
iv
ABOUT APCO PROJECT 25
This device made under license under one or more of the fol-
lowing US patents: #4,590,473, #4,636,791, #5,148,482,
#5,185,796, #5,271,017, #5,377,229.
The IMBE™ voice coding technology embodied in this product
is protected by intellectual property rights including patent
rights, copyrights and trade secrets of Digital Voice Systems,
Inc. This voice coding Technology is licensed solely for use
within this communications equipment. The user of this tech-
nology is explicitly prohibited from attempting to decompile, re-
verse engineer, or disassemble the object code, or in any
other way convert the object code into a human-readable
form. U.S. Pat. nos. #5,870,405, #5,826,222, #5,754,974,
#5,701,390, #5,715,365, #5,649,050, #5,630,011, #5,581,656,
#5,517,511, #5,491,772, #5,247,579, #5,226,084, #5,195,166.
P25 digital mode is available when the optional UT-122
DIG
-
ITAL UNIT
is installed.
v
TABLE OF CONTENTS
FOREWORD .............................................................. i
IMPORTANT ............................................................... i
EXPLICIT DEFINITIONS ............................................ i
SUPPLIED ACCESSORIES ...................................... ii
SPECIFICATIONS ..................................................... ii
OPTIONS ................................................................... ii
PRECAUTIONS ........................................................ iii
ABOUT APCO PROJECT 25 .................................... iv
TABLE OF CONTENTS ............................................. v
1 CONNECTION ................................................. 1–2
Rear panel connection....................................... 1
Antenna installation .......................................... 2
2PANEL DESCRIPTION .................................. 3–10
Front panel—controller ..................................... 3
Function display ................................................ 7
Rear panel—main unit ...................................... 9
3 SETTING A FREQUENCY ........................... 11–13
Preparation ..................................................... 11
Tuning step selection ...................................... 12
Using the tuning dial ....................................... 13
Receive mode selection ................................. 13
4 BASIC OPERATION .................................... 14–22
Receiving ........................................................ 14
Monitor function .............................................. 14
Lock function .................................................. 15
Attenuator function .......................................... 15
NB function ..................................................... 16
AGC function .................................................. 16
AFC function ................................................... 17
VSC function ................................................... 17
IF lter selection ............................................. 18
IF shift function ............................................... 18
Duplex operation ............................................ 19
Weather channel operation
(USA/CANADA versions only).............................. 20
Single band operation ..................................... 22
5 MEMORY OPERATION ............................... 23–32
General description ........................................ 23
Memory channel selection .............................. 23
Programming a memory channel ................... 24
Programming channel names ........................ 25
Copying memory contents .............................. 27
Memory clearing ............................................. 29
Memory bank setting ...................................... 30
Memory bank selection ................................... 31
Transferring bank contents ............................. 31
6 SCAN OPERATION ..................................... 33–37
Scan types ...................................................... 33
Scan start/stop ................................................ 34
Scan edges programming .............................. 35
Skip scan ........................................................ 36
Scan resume condition ................................... 37
vi
1
2
3
4
5
6
7
8
9
10
11
12
13
14
7 PRIORITY WATCH ............................................ 38
Priority watch types ........................................ 38
Priority watch operation .................................. 38
8 POCKET BEEP AND TONE SQUELCH ..... 39–42
Pocket beep operation .................................... 39
Tone/DTCS squelch operation ........................ 41
Tone scan ....................................................... 42
9 DIGITAL MODE OPERATION ..................... 43–48
Digital mode operation .................................... 43
Pocket beep operation .................................... 43
Digital squelch operation ................................ 45
Call sign programming (for DV mode) ............... 47
ID code programming (for P25 mode) ............... 48
10 SET MODE ................................................... 49–64
General ........................................................... 49
Set mode items ............................................... 49
11 OTHER FUNCTIONS ................................... 65–68
DSP operation (Optional UT-106 is required)....... 65
DATA cloning
(IC-PCR2500 control software must be installed) ... 66
Partial reset ..................................................... 67
All reset............................................................ 67
Internal audio switch........................................ 68
12 TROUBLESHOOTING ....................................... 69
13 DOC ................................................................... 70
1
CONNECTION
1
Rear panel connection
D DC power supply connection
Use a 12 V DC power supply with at least 4 A capacity.
Make sure the ground terminal of the DC power supply is
grounded.
CONNECTING TO A DC POWER SUPPLY
OPC-254L
(optional)
black
white
R CAUTION! NEVER remove the fuse-
holders from the DC power cable.
Connect to a 12 V DC
battery. Pay attention
to polarities. NEVER
connect to a 24 V bat-
tery. This could dam-
age the receiver.
Solder
Crimp
NOTE: Use the terminals as shown
below for the cable connections.
D Fuse replacement
Receiver
Fuses (4 A)
DC power
supply 12 V
to an
AC outlet
Ferrite core*
*: Ferrite core may not be present on all versions.
Controller
CP-12L
(optional)
To a cigarette lighter socket
Fuse (4 A)
Or
Receiver
To ground
Supplied antenna
The antenna holder is backed with double-sided
tape. Remove the protective paper when the
antenna is fixed to any place.
To AC adapter
The dualwatch operation or diversity
operation requires antennas connected
to both [ANT1] and [ANT2].
2
1
CONNECTION
1
DD
OPC-1156 connection
q Connect the controller plug to the OPC-1156 jack.
w Detach the ferrite core from the controller cable, then at-
tach it to the OPC-1156 as shown below.
• Make sure to wind the cable on the ferrite core.
e Connect the OPC-1156 plug to the [CONTROLLER] con-
nector of the receiver.
Antenna installation
D Antenna location
To obtain maximum performance from the receiver, select a
high-quality antenna and mount it in a good location. It is not
necessary to use radials on a magnetic mount (“mag mount”)
antenna.
Receiver
OPC-1156
Controller
Jack
Ferrite core*
*: Ferrite core may not be present on all versions.
3
PANEL DESCRIPTION
2
MAIN
AGC
S.MW
TS
VFO/MR
MHz
MAIN
NB
S.MW
VFO/MR
TS
MHz
VOLVOL
DIALDIAL
SQLSQL
MONI
T/T-SCAN
MODE
SCAN
ATT
PRIO
COMMUNICATIONS RECEIVER
iR2500
PWR
SET
SKIP
Function display (pgs. 7, 8)
qw
ert
The keys w to t are for the main band only.
Front panel—controller
4
2
PANEL DESCRIPTION
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
qPOWER KEY [PWR ]
Push and hold for 1 sec. to turn the controller power ON
and OFF. (p. 11)
Continue to hold this key down for 2 sec. after power
ON to turn the lock function ON and OFF. (p. 15)
wSET•SKIP KEY [SET•SKIP]
Push to enter set mode
. (p. 49)
Push and hold for 1 sec. to turn the channel skip setting
ON and OFF for memory/VFO skip scan operation.
(p. 36)
e ATTENUATOR/PRIORITY KEY [ATT•PRIO]
Push to turn the ATT (Attenuator) function ON and OFF.
(p. 15)
Push and hold for 1 sec. to start priority watch. (p. 38)
r MODE•SCAN KEY [MODE•SCAN]
Push and hold for 1 sec. to enter receive mode select
mode. (p. 13)
Rotate main band’s [DIAL] to select the desired receive
mode.
Push and hold for 1 sec. to start a scan. (p. 34)
Cancels a scan when pushed during scan.
t MONITOR•TONE•TONE SCAN KEY
[MONI•T/T-SCAN]
Push to turn the monitor function ON and OFF. (p. 14)
Push and hold for 1 sec. to enter the tone function se-
lection mode. (pgs. 34, 41, 44, 46)
Pocket beep (CTCSS), tone squelch, pocket beep (DTCS),
DTCS squelch or tone function OFF can be selected in FM
mode.
Pocket beep (DSQL), digital call sign squelch, pocket beep
(CSQL), digital code squelch or digital squelch function OFF
can be selected in DV*
1
mode.
Pocket beep (NAC), digital NAC squelch, pocket beep (Se-
lective), digital selective squelch or digital squelch function
OFF can be selected in P25*
2
mode.
*
1
: The optional UT-118 is required.
*
2
: The optional UT-122 is required.
Some versions already come with the UT-122 installed.
Push and hold for 1 sec. during tone function selection
mode to start the tone scan. (p. 42)
5
2
PANEL DESCRIPTION
MAIN
AGC
S.MW
TS
VFO/MR
MHz
MAIN
NB
S.MW
VFO/MR
TS
MHz
VOLVOL
DIALDIAL
SQLSQL
MONI
T/T-SCAN
MODE
SCAN
ATT
PRIO
COMMUNICATIONS RECEIVER
iR2500
PWR
SET
SKIP
Left band Right band
o
o
yb
u
i
!0
ya
u
i
!0
!1!1
The same controls for both the left and right bands are arranged symmetrically.
6
2
PANEL DESCRIPTION
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
ya MAIN•AGC KEY [MAIN•AGC]
Push to select the left band as main band. (p. 11)
Push and hold for 1 sec. to turn the AGC (Automatic
Gain Control) function ON and OFF. (p. 16)
yb MAIN•NB KEY [MAIN•NB]
Push to select the right band as main band. (p. 11)
Push and hold for 1 sec. to turn the NB (Noise Blanker)
function ON and OFF. (p. 16)
u
VFO/MEMORY•MEMORY WRITE KEY [VFO/MR•S.MW]
Push to select from VFO, memory and weather chan-
nel* modes. (pgs. 11, 20, 23)
*Weather channels available for USA/CANADA versions only.
Push and hold for 1 sec. to enter select memory write
mode for memory channel programming. (pgs. 24, 25,
35)
iMHz TUNING•TUNING STEP [MHz•TS]
Push to select from band selection, 1 MHz or 10 MHz
tuning. (p. 13)
Push and hold for 1 sec. to enter tuning step select
mode. (p. 12)
Rotate [DIAL] to select the desired tuning step.
oVOLUME CONTROL [VOL] (p. 14)
Adjusts the audio level for left and right band.
!0TUNING DIAL [DIAL]
Selects the operating frequency (p. 13), memory channel
(p. 23), the setting of the set mode item and the scanning
direction (p. 34) for left and right band.
!1SQUELCH CONTROL [SQL]
Varies the squelch level for left and right band. (p. 14)
7
2
PANEL DESCRIPTION
Function display
qMAIN INDICATOR (p. 11)
Indicates the main band for function control.
wRECEIVE MODE INDICATORS FOR ANALOG
Shows the selected receive mode.
SSB (LSB/USB), CW, AM and FM (FM/WFM) are available.
eRECEIVE MODE INDICATOR FOR DIGITAL
Appears while the digital mode is selected.
The optional UT-118 for DV mode or UT-122 for P25 mode is re-
quired. Some versions come with the UT-122 installed.
rAUTO POWER-OFF INDICATOR (p. 52)
Appears while the auto power OFF function is activated.
tFREQUENCY READOUT
Shows the operating frequency, channel names, set mode
contents, etc.
Frequency decimal point blinks while scanning. (p. 34)
yMEMORY CHANNEL NUMBER INDICATORS
Shows the selected memory channel number. (p. 11)
Shows the selected bank initial. (p. 31)
“L” appears when the lock function is activated. (p. 15)
Left band Right band
t
t
!3
qewqwr
yyuuoo!0!0
!2
!1!1 ii
!4
!3
!4
!2
*Display indicators are arranged identically for both
the left and right bands.
8
2
PANEL DESCRIPTION
2
uSKIP INDICATORS (p. 36)
~” appears when the displayed memory channel is
specied as a skip channel.
P
~” appears when the displayed frequency is speci-
ed as a program skip frequency.
iMEMORY INDICATOR (pgs. 11, 23)
Appears when memory mode
is selected.
oVSC INDICATOR (p. 17)
Appears when the VSC function is in use.
!0S-METER INDICATORS
Shows the relative signal strength while receiving signals.
(p. 14)
!1TONE INDICATORS
During FM mode operation:
“”appears while the tone squelch function is in use.
(p. 41)
“”appears while the DTCS squelch function is in
use. (p. 41)
During DV*
1
(Digital) mode operation:
“”appears while the digital call sign squelch func-
tion is in use. (p. 45)
“”appears while the digital code squelch function
is in use. (p. 45)
During P25*
2
(Digital) mode operation:
“”appears while the digital NAC squelch function is
in use. (p. 45)
“”appears while the digital selective squelch func-
tion is in use. (p. 45)
S” appears with the “ or “ ” indicator while the
pocket beep function is in use. (pgs. 39, 43)
*
1
: The optional UT-118 is required.
*
2
: The optional UT-122 is required.
Some versions come with the UT-122 installed.
!2PRIORITY INDICATOR (p. 38)
Appears while priority watch is activated; blinks while pri-
ority watch is paused.
!3ATT INDICATOR (p. 15)
Appears when the ATT function is in use.
!4BUSY INDICATOR
Appears when a signal is being received or the squelch
is open. (p. 14)
Blinks while the monitor function is in use. (p. 14)
9
2
PANEL DESCRIPTION
Rear panel—main unit
Front
Top
Rear
Power switch
Speaker
DATA
PACKET 1
USB EXT SP
ANT 1 ANT 2
DC IN
GND
PACKET 2
qwe r q
t
i
uy
2-conductor 3.5 (d) mm (
1
8˝)/100 k
PACKET jack connection
2-conductor 3.5 (d) mm (
1
8˝)/8
EXT SP jack connection
AUDIO
GND
AUDIO
GND
Left band Right band
10
2
PANEL DESCRIPTION
2
qANTENNA CONNECTORS [ANT]
Connect a 50 antenna with a BNC connector and a
50 coaxial cable.
[ANT1] for left band, [ANT2] for right band.
wDATA JACK [DATA]
Connect to a PC via an RS-232 cable (D-sub 9 pin) for DV
*
1
mode data communication in RS-232 format.
*
1
: The optional UT-118 is required.
ePACKET JACKS [PACKET]
Connect a TNC (Terminal Node Controller), etc. for data
communications. The receiver can support 9600 bps
packet communication (AFSK).
rUSB CONNECTOR [USB]
Connects to a PC via a supplied USB cable. This connec-
tor is only used for control software operation.
No connection is necessary when the IC-R2500’s controller is in
use.
CAUTION: NEVER insert any other object than a USB
cable, such as a metallic object, otherwise the Main unit
may be damaged.
tEXTERNAL SPEAKER JACK [EXT SP]
Connect an 8 external speaker.
Audio output power is more than 0.5 W.
yCONTROLLER [CONTROLLER]
Connects to a controller via an extension cable. This con-
nector is only used for IC-R2500’s controller operation.
• No connection is necessary when the control software is in use.
CAUTION: NEVER insert any other object than the con-
troller cable, such as a metallic object, otherwise the
Main unit may be damaged.
uPOWER JACK [DC IN]
Accepts 12 V DC ±15% via the supplied DC power cable.
iGROUND TERMINAL [GND]
Connect this terminal to a ground.
Pin 2 (RxD),
Pin 5 (GND)
to the [DATA] jack
2.5(d) mm Less than
10(d) mm
GND
RxD
1
5
69
RS-232
(DB-9 female)
Two antennas must be connected to [ANT1] and [ANT2]
during dualwatch operation or diversity operation.
Diversity operation requires two antennas of the same
performance in suitable places. Ask your antenna dealer
for installation details.
11
SETTING A FREQUENCY
3
Preparation
D Turning power ON/OFF
Push [PWR ] for 1 sec. to turn power ON and OFF.
D MAIN band
The IC-R2500 can receive signals on both the left and right
bands simultaneously.
Push the desired band’s [MAIN•AGC] or [MAIN•NB] to se-
lect the main band.
•“Q” indicates the main band.
D VFO and memory modes
The receiver has 2 basic operating modes: VFO mode and
memory mode
. Select VFO mode rst to set an operating fre-
quency.
Push the desired band’s [VFO/MR•S.MW] to select VFO
mode.
Push [VFO/MR•S.MW] again to select memory mode
.
•“!” indicator appears when memory mode is selected.
!” indicator appears when
memory mode is selected
[VFO/MR•S.MW]
[MAIN•AGC]
[MAIN•NB]
[PWR• ]
Tuning step selection
When using the tuning dial to change the frequency, or when
a scan function is activated, the frequency changes in incre-
ments determined by the set tuning step. This can be
changed if desired.
The following tuning step are available.
• 0.01 kHz (10 Hz) • 0.02 kHz (20 Hz) • 0.05 kHz (50 Hz)
• 0.1 kHz (100 Hz) • 0.5 kHz (500 Hz) • 1 kHz
• 2.5 kHz • 5 kHz • 6.25 kHz
• 8.33 kHz • 9 kHz • 10 kHz
• 12.5 kHz • 15 kHz • 20 kHz
• 25 kHz • 30 kHz • 50 kHz
• 100 kHz • 125 kHz • 150 kHz
• 200 kHz • 500 kHz • 1000 kHz (1 MHz)
q Push the desired band’s [MAIN] to select the main band.
Push the same band’s [VFO/MR•S.MW] to select VFO mode, if
necessary.
wPush and hold [MHz•TS] for 1 sec. to enter tuning step se-
lect mode.
eRotate the same band’s [DIAL] to select the desired tun-
ing step.
rPush [MHz•TS] to exit tuning step select mode
.
Or push any other keys for the same band or any of the shared
keys below the display to exit tuning step select mode.
[DIAL]
[MHz•TS]
12
3
SETTING A FREQUENCY
3
13
3
SETTING A FREQUENCY
Using the tuning dial
qRotate the desired band’s [DIAL] to set the frequency.
If VFO mode is not selected, push the same band’s
[VFO/MR•S.MW] to select VFO mode.
• The frequency changes in the selected tuning steps. (p. 12)
wTo change the frequency band or tune in 1 MHz (10 MHz)
steps, push [MHz•TS], then rotate the band’s [DIAL].
ePush [MHz•TS] to return to the normal display.
Receive mode selection
Receive modes are determined by the physical properties of
the radio signals. The receiver has 6 receive modes: USB
LSB, CW, AM, WFM and FM modes. The mode selection is
stored independently in each memory channel.
Additionally, IC-R2500 has a DV or P25 mode when the op-
tional UT-118 or UT-122 units are installed, respectively. In
DV or P25 mode, the right band can select AM, FM and WFM
mode only.
Typically, AM mode is used for the AM broadcast stations
(0.495–1.620 MHz), air band (118–135.995 MHz), and short-
wave broadcasts. WFM is used for FM broadcast stations
(76–107.9 MHz). WFM mode can be selected on 1300 MHz
band or below.
qPush [MODE•SCAN] to enter receive mode select mode
.
wRotate main band’s [DIAL] to select the desired mode.
ePush any key for main band to exit receive mode select
mode.
[DIAL]
[MODE•SCAN]
While the band selection mode is selected,
the digits below 100 kHz disappear.
While 1 MHz tuning step is
selected, the 1 MHz digit
blinks.
While 10 MHz tuning step is
selected, the 10 MHz digit
blinks.
Push [VFO/MR•S.MW]
Rotate [DIAL]
14
4
BASIC OPERATION
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Receiving
qSet the audio level for the main band.
Push the desired band’s [MAIN].
Push [MONI•T/T-SCAN] to open the squelch.
Rotate the main band’s [VOL] to adjust the audio level.
Push [MONI•T/T-SCAN] to close the squelch.
wSet the squelch level.
Rotate the main band’s [SQL] fully counterclockwise in
advance, then rotate [SQL] clockwise until the noise
just disappears.
eSet the operating frequency in the main band. (pgs. 11–13)
When interference due to strong signals is received, push
[ATT•PRIO] to turn the attenuator function ON. (p. 15)
rWhen a signal is received on the set frequency, squelch
opens and the receiver emits audio.
“BUSY” appears and the S-meter shows the relative signal
strength for the received signal.
Monitor function
This function is used to listen to weak signals without disturb-
ing the squelch setting or to open the squelch manually even
when mute functions such as the tone squelch are in use.
After pushing [MAIN] to select the desired band (left or
right) as the main band, push [MONI•T/T-SCAN] for 1 sec.
to open the squelch.
• “BUSY” blinks.
Push [MONI•T/T-SCAN] again to cancel the function.
[MONI•T/T-SCAN]
Appears when receiving a signal.
Lock function
To prevent accidental frequency changes and unintentional
function access, use the lock function.
Continue to hold [PWR• ] down for 2 sec. after power
ON to turn the lock function ON and OFF.
[MONI•T/T-SCAN] (monitor function only), [VOL], [SQL],
[MAIN•AGC] (main band selection only) and [MAIN•NB] (main
band selection only) can be used while the lock function is in
use.
Attenuator function
The attenuator prevents a desired signal from being distorted
when very strong signals are near the desired frequency or
when very strong RF elds, such as from a broadcasting sta-
tion, are near your location. The attenuator reduces signal
strength by about 20 dB and this function can be activated on
1300 MHz or below.
Push [ATT•PRIO] momentarily to toggle the attenuator
function ON and OFF.
Push [MAIN] to select the desired band (left or right) as the main
band in advance.
•“ATT” appears when the attenuator function is in use.
[ATT•PRIO]
Appears
[PWR• ]
2 “L”s appear while the lock function is activated.
15
4
BASIC OPERATION
16
4
BASIC OPERATION
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
NB function
The NB (noise blanker) function removes pulse-type noise
when SSB, CW or AM mode is selected.
After pushing [MAIN] to select the desired band (left or
right) as the main band, push and hold [MAIN•NB] for 1
sec. to toggle the NB function ON and OFF.
•“nb-On” or “nb-OF” appears for a moment when the NB function
is turned ON or OFF, respectively.
AGC function
The AGC (Automatic Gain Control) function controls receiver
gain to produce a constant audio output level even when the
received signal strength varies from fading, etc. A slow-re-
sponse AGC function is selectable for SSB, CW or AM mode.
After pushing [MAIN] to select the desired band (left or
right) as the main band, push and hold [MAIN•AGC] for 1
sec. to toggle the AGC function Slow and Fast.
•“AGC-S” or “AGC-F” appears for a moment when the AGC func-
tion is selected Slow or Fast, respectively.
While in FM or WFM mode, the AGC function is xed as
Fast and AGC Slow cannot be selected.
[MAIN•AGC]
[MAIN•NB]
17
4
BASIC OPERATION
AFC function [
The AFC (Automatic Frequency Control) function tunes the
displayed frequency automatically when an off-center fre-
quency is received. It activates in FM mode and only when
the selected IF lter is 6 kHz or 15 kHz.
q Push the desired band’s [MAIN] to select the main band.
w Select FM mode.
e Push [SET•SKIP] to enter set mode
.
r Push [SET•SKIP] or [ATT•PRIO] several times until “AFC”
appears.
t Rotate the main band’s [DIAL] to toggle the AFC function
ON and OFF.
y Push any key for the main band to exit set mode
.
VSC function [
The VSC (Voice Squelch Control) function opens the squelch
only when receiving a modulated signal. This function is very
useful while scanning, the VSC pauses only when modulated
signals are received. Scanning continues when unmodulated
or beat signals are received.
q Push the desired band’s [MAIN] to select the main band.
w Push [SET•SKIP] to enter set mode
.
e Push [SET•SKIP] or [ATT•PRIO] several times until “VSC”
appears.
r Rotate the main band’s [DIAL] to toggle the VSC function
ON and OFF.
t Push any key for the main band to exit set mode
.
[SET•SKIP]
[DIAL]
[ATT•PRIO]
[SET•SKIP]
[DIAL]
[ATT•PRIO]
18
4
BASIC OPERATION
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
IF lter selection [
The receiver has 2 to 4 IF passband filter widths for each
mode. Selectable passband widths are 3, 6, 15, 50 and 230
(depending on the selected mode).
• Selectable passband width for each mode.
SSB mode : 3 (2.8 kHz) or 6 kHz
CW mode : 3 (2.8 kHz) or 6 kHz
AM mode : 3 (2.8 kHz), 6 kHz, 15 kHz or 50 kHz
WFM mode: 50 kHz or 230 kHz
FM mode : 6 kHz, 15 kHz or 50 kHz
q Push the desired band’s [MAIN] to select the main band.
w Push [SET•SKIP] to enter set mode
.
e Push [SET•SKIP] or [ATT•PRIO] several times until “FIL”
appears.
r Rotate the main band’s [DIAL] to select the desired IF
passband width.
t Push any key for the main band to exit set mode
.
IF shift function [
The IF shift function electronically changes the passband fre-
quency of the IF (Intermediate frequency) cutting out higher
or lower frequency components of the IF to reject interfer-
ence. This function is available when the receive mode is
SSB or CW mode, and shifts the IF frequency up to ±25 steps
(in 1 step: 50 Hz).
q After pushing [MAIN] to select the desired band (left or
right) as the main band, push [SET•SKIP] to enter set
mode.
w Push [SET•SKIP] or [ATT•PRIO] several times until “SFt”
appears.
e Rotate the main band’s [DIAL] to set the shifting direction
and frequency range.
r Push any key for the main band to exit set mode
.
Center position
(default)
HighestLowest
[SET•SKIP]
[DIAL]
[ATT•PRIO]
[SET•SKIP]
[DIAL]
[ATT•PRIO]
19
4
BASIC OPERATION
Duplex communication uses two different frequencies for
transmitting and receiving. Generally, duplex is used in com-
munication through a repeater, some utility communications,
etc.
During duplex operation, the transmit station frequency is
shifted from the receive station frequency by the offset fre-
quency. Repeater information (offset frequency and shift di-
rection) can be programmed into memory channels. (p. 24)
DD
Setting [
qPush the desired band’s [MAIN] to select the main band.
wPush [SET•SKIP] to enter set mode
.
ePush [SET•SKIP] or [ATT•PRIO] several times until the
duplex direction setting item “OFF
dP,” “DUP– dP” or “DUP+
dP” appears.
rRotate the main band’s [DIAL] to select the duplex direc-
tion, “DUP–
dP” or “DUP+ dP.”
tPush [SET•SKIP] once to advance to the offset frequency
setting item.
yRotate the main band’s [DIAL] to set the desired offset fre-
quency within 0.000–1000.000 MHz range.
• The tuning step, selected in VFO mode, is used for setting.
•Push [MHz•TS] then rotate the main band’s [DIAL] to change
the frequency in 10 MHz steps, or push again then rotate the
main band’s [DIAL] to change the frequency in 1 MHz steps.
(Each push toggles 1MHz, 10 MHz or selected tuning steps.)
uPush any key for main band to exit set mode.
[SET•SKIP]
[DIAL]
[ATT•PRIO]
Duplex operation
20
4
BASIC OPERATION
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
DD
Operation
qSet the receive station frequency (repeater output frequency).
wPush [MONI•T/T-SCAN] to monitor the transmit station fre-
quency
(repeater input frequency) directly.
Weather channel operation
(USA/CANADA versions only)
DD
Weather channel selection
q Push [VFO/MR•S.MW] to select memory mode in the de-
sired band (left or right).
w Push [MHz•TS] to enter memory type selection mode
.
e Rotate [DIAL] to select the weather channel group.
r Push any key for main band or any of the shared keys
below the display to set the channel indication.
Channel number appears.
t Rotate [DIAL] to select the desired weather channel.
y To return to regular memory mode
, repeat steps w to r
and select “bAnk --” at step e.
[DIAL]
[MHz•TS]
[VFO/MR•S.MW]
Weather channel group indicaiton
[MONI•T/T-SCAN]
Frequency shifts
the offset frequency
22
4
BASIC OPERATION
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Single band operation
DD
Single band/Dualwatch operation
Dualwatch operation monitors two frequencies simultane-
ously. The IC-R2500 has two independent receiver circuits:
left band, and right band
(available frequencies, operating mode
and functions are different depending on bands).
Single band operation is useful when only one frequency is
being watched. The right band can be inhibited.
qSelect the left band as the main band.
Push [MAIN•AGC] once to select left band, if necessary.
wPush [SET•SKIP] to enter set mode
.
ePush [SET•SKIP] or [ATT•PRIO] several times to select
“SUb” item.
rRotate the left band’s [DIAL] to turn the sub band ON for
dualwatch or OFF for single band operation.
tPush any key for main band to exit set mode
.
When the dualwatch operation is in use, IC-R2500 must be
connected to two antennas. ([ANT1] and [ANT2])
DD
Diversity operation
The diversity receiving compares the receiving signal strength
from two different antennas, ANT1 and ANT2, and automati-
cally selects the strongest signal. This feature is useful when
you are listening in a moving vehicle or the transmitting sta-
tion itself is moving. Diversity receiving is available from 50
MHz to 1300 MHz on FM, P25 and DV modes only.
qTurn the sub band OFF to select single band operation as
described at left.
wRotate right band’s [DIAL] to turn the diversity function ON
or OFF.
With the squelch open in FM mode while receiving a
weak signal, diversity receiving does not work properly.
AGC is disabled during diversity receiving.
[DIAL]
“ ” indicator appears while [ANT1] is selected,
“ ” indicator appears while [ANT2] is selected.
[DIAL]
[MAIN•AGC] [SET•SKIP]
[ATT•PRIO]
23
MEMORY OPERATION
5
General description
The receiver has 1100 memory channels including 100 scan
edge memory channels (50 pairs) for storage of often-used
frequencies. And a total of 21 memory banks, A to H, J to R,
T, U, W and Y are available for storing groups of frequencies,
etc. Up to 100 channels can be assigned to a bank.
DD
Memory channel contents
The following information can be programmed into memory
channels:
Operating frequency (p. 13)
Receive mode (p. 13)
•Tuning step (p. 12)
Attenuator ON/OFF (p. 15)
IF lter selection (p. 18)
Duplex direction (DUP+ or DUP–) with an offset fre-
quency (p. 19)
Squelch control system ON/OFF and its frequency or
code (pgs. 39, 41, 43, 45)
Scan skip information (p. 36), etc.
Memory channel selection
q Push the desired band’s [VFO/MR•S.MW] once or twice
to select memory mode
.
•“M” indicator appears.
w
Rotate the same band’s [DIAL] to select the desired mem-
ory channel.
Programmed memory channels only can be selected.
!” indicator appears when
memory mode is selected
[VFO/MR•S.MW]
If memory banks or weather channels* mode appears at
step q, push [MHz•TS] and rotate [DIAL] to select
“bAnk --,” then push any keys for the main band or any of
the shared keys below the display to return to channel se-
lection.
*Available for USA/CANADA versions only.
27
5
MEMORY OPERATION
[EXAMPLE]: Transferring the contents of memory channel 30 to VFO.
Push to select memory mode.
Rotate for selecting memory channel. Push for 3 sec.
S.MW
VFO/MR
S.MW
VFO/MR
This function transfers a memory channel’s contents to VFO
(or another memory channel). This is useful when searching
for signals near a memory channel frequency and for recalling
the subaudible tone frequency, etc.
D MemoryVFO
qSelect the desired band’s (left or right) memory channel to
be transferred.
Push the desired band’s [VFO/MR•S.MW] several times
to select memory mode
, then rotate the same band’s
[DIAL] to select the desired memory channel.
•“!” and memory channel number appear.
wPush and hold [VFO/MR•S.MW] for 3 sec. to transfer the
selected memory channel contents to VFO mode
.
VFO mode is selected automatically.
Copying memory contents
28
5
MEMORY OPERATION
5
D Memorymemory
qSelect the desired band’s (left or right) memory channel to
be transferred.
Push the desired band’s [VFO/MR•S.MW] several times
to select memory mode
, then rotate the same band’s
[DIAL] to select the desired memory channel.
•“!” and memory channel number appear.
w Push and hold the same band’s [VFO/MR•S.MW] for 1
sec. to enter select memory write mode
.
•“!” and memory channel number blink.
e Rotate the same band’s [DIAL] to select the target mem-
ory channel.
• Scan edge channels, 0A/0B to 49A/49B can also be selected.
r Push and hold [VFO/MR•S.MW] for 1 sec. to transfer the
selected memory channel contents to the target memory
channel.
The targeted memory channel and transferred contents are dis-
played.
[EXAMPLE]: Transferring the contents of memory channel 22 to channel 23.
Push to select memory mode.
Select the target channel.
Rotate for selecting memory channel.
Push for 1 sec.
S.MW
VFO/MR
S.MW
VFO/MR
Push for 1 sec.
S.MW
VFO/MR
5
MEMORY OPERATION
29
Contents of programmed memories can be cleared (erased),
if desired.
q Push [VFO/MR•S.MW] to select VFO mode
in the main
band.
w Push the same band’s [VFO/MR•S.MW] for 1 sec. to enter
select memory write mode
.
•“!” indicator and the memory channel number blink.
e Rotate the same band’s [DIAL] to select the memory
channel to be cleared.
Memory channels not yet programmed are blank.
r Push [SET•SKIP] three times to select “CLEAR,” then
push and hold [VFO/MR•S.MW] for 1 sec.
•3 beeps sound.
The cleared channel display changes to blank.
•“!” and the memory channel number blink continuously.
t Push the same band’s [MAIN] or [MHz•TS] to exit select
memory write mode, or repeat steps e and r to clear an-
other channel.
y Push the same band’s [VFO/MR•S.MW] to return to VFO
mode.
NOTE: Be careful!— the contents of cleared memories
CANNOT be recalled.
[EXAMPLE]: Clearing memory channel 20.
Push to select VFO. Rotate for selecting memory channel.Push for 1 sec.
S.MW
VFO/MR
S.MW
VFO/MR
S.MW
VFO/MR
Push any switch for main band
other than , then push to return to VFO.
S.MW
VFO/MR
S.MW
VFO/MR
Push three times, then push for 1 sec.
SET
SKIP
Beep
Beep
Beep
Memory clearing
5
MEMORY OPERATION
30
5
Memory bank setting
[
The IC-R2500 has a total of 21 banks (A to H, J to R, T, U,
W, Y). Regular memory channels, 0 to 999, may assigned
into the desired bank for easy memory management.
q Select the desired memory channel.
Push [VFO/MR•S.MW] to select memory mode
in the
main band, then rotate the same band’s [DIAL] to se-
lect the desired memory channel.
•“!” and memory channel number appear.
w Push and hold the same band’s [VFO/MR•S.MW] for 1
sec. to enter select memory write mode
.
•“!” indicator and the memory channel number blink.
e Push [SET•SKIP] once to select “bAnk.”
r Rotate the same band’s [DIAL] to select the desired bank
and bank channel.
• Push [ATT•PRIO] to toggle the bank or bank channel selection.
• Banks A to H, J to R, T, U, W and Y are available.
Only vacant bank channel numbers will be displayed.
t Push and hold [VFO/MR•S.MW] for 1 sec. to program the
bank and exit select memory write mode
.
Bank selection Bank channel selection
After [SET•SKIP]
released
[SET•SKIP]
[DIAL]
[ATT•PRIO]
[VFO/MR•S.MW]
32
5
MEMORY OPERATION
5
w Push [VFO/MR•S.MW] for 1 sec. to enter select memory
write mode.
•“!” indicator and the memory channel number blink.
e Push [SET•SKIP] once to select “bAnk.”
r Rotate the same band’s [DIAL] to select the desired bank
indicator to transfer or erase.
• Push [ATT•PRIO] to toggle the bank or bank channel selection.
•Select “– –” indication when erasing the contents from the bank.
•Vacant bank channel numbers are only be displayed.
t Push and hold [VFO/MR•S.MW] for 1 sec. to program the
bank and return to regular memory mode
.
y Repeat steps q to t for transferring or erasing an an-
other bank’s contents.
Bank selection Bank channel selection
After [SET•SKIP]
released
Memory channel blinks
33
SCAN OPERATION
6
Scan types
Scanning searches for signals automatically and makes it
easier to locate new stations.
There are 5 scan types and 4 resume conditions to suit your
operating needs.
FULL SCAN (p. 34)
Repeatedly scans all frequen-
cies over the entire band.
Some frequency ranges are
not scanned according to the
frequency coverage of the re-
ceiver’s version.
10
kHz
3299.9999
MHz
Scan
Jump
ALL/SELECTED BANK
SCAN (p. 34)
Repeatedly scans all bank
channels or selected bank
channels. Skip scan is also
available.
SKIP
SKIP
A99
A03
A00 A01 A02
A04
A98
A05
PROGRAMMED SCAN
(p. 34)
Repeatedly scans between
two user-programmed fre-
quencies. Used for checking
for frequencies within a speci-
fied range such as repeater
output frequencies, etc.
Band
edge
xxA xxB
Band
edge
Scan edges
Scan
Jump
MEMORY (SKIP) SCAN
(p. 34)
Repeatedly scans memory
channels except those set as
skip channel. Skip channels
can be turned ON and OFF
by pushing and holding
[SET•SKIP] in memory mode.
SKIP
SKIP
M 0
M 4
M 1 M 2 M 3
M 5
M 199
M 6
FREQUENCY/MEMORY
SKIP FUNCTION (p. 36)
Skips unwanted frequencies
or channels that inconve-
niently stop scanning. This
function can be turned ON
and OFF by pushing and
holding [SET•SKIP] in mem-
ory mode.
Band
edge
Band
edge
Scan
SKIP SKIP
Jump
34
6
SCAN OPERATION
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Scan start/stop
D Preparation
Scan resume condition (p. 37); program scan edges (p. 35);
program two or more memory channels (p. 24); set skip set-
tings (p. 36), if desired.
D Operation
qPush [VFO/MR•S.MW] once or twice to select VFO mode
for full/programmed scan; or to select memory mode for
memory/bank scan.
Select the desired bank in memory type selection mode for bank
scan.
wSet the squelch level to the point where noise is just muted.
ePush and hold [MODE•SCAN] for 1 sec. to start the scan.
•To change the scanning direction, rotate the main band’s [DIAL].
The memory channel readout blinks the scan type as below.
r Push [SET•SKIP] (or [ATT•PRIO]) to select full and pro-
grammed scan (P00 to P49), if VFO is selected in step q.
t To stop the scan, push [MODE•SCAN].
About the scanning steps: The selected tuning step in
each frequency band (in VFO mode
) is used during scan.
The bank-link setting can be changed in set mode
. See
(p. 56) for details.
• During full scan • During programmed scan • During memory scan • During bank scan
Indicates scan edge channels.
• P01 stands for 01A/01B
• P00 to P49 are available when
they are programmed, and se-
lected with [SET•SKIP].
Indicates bank channel.
Push [SET•SKIP] to se-
lect full (ALL) or program-
med scan (P00–P49) in
sequence.
While pushing and holding [MODE•SCAN], rotate [DIAL]
also to select full (ALL) or programmed scan (P00–P49).
NOTE: When SSB, CW, AM, FM, WFM or Digital mode
frequencies are programmed into memory channels randomly,
memory scan is slow because changing modes takes time. In
this case, assign the SSB, CW, AM, FM, WFM or Digital mode
frequencies into separate banks where bank scan can be
used. And using the bank scan is helpful.
IMPORTANT!: To perform memory or bank scan, two or
more memory/bank channels MUST be programmed, oth-
erwise the scan will not start.
35
6
SCAN OPERATION
Scan edges can be programmed in the same manner as
memory channels. Scan edges are programmed into scan
edges, 0A/0B to 49A/49B, in memory channels.
q Push the desired band’s [VFO/MR•S.MW] once or twice
to select VFO mode
.
w Set the edge frequency of the desired frequency range:
Set the frequency using the same band’s [DIAL].
Set other data (e.g. tone squelch, etc.), if desired.
e Push and hold the same band’s [VFO/MR•S.MW] for
1 sec. to enter select memory write mode
.
•“!” indicator and the memory channel number blink.
r Rotate the same band’s [DIAL] to select one of scan edge
channel, 0A to 49A.
t Push and hold [VFO/MR•S.MW] for 1 sec. to program.
•3 beeps sound and VFO mode is automatically selected.
•Scan edge 0B to 49B is automatically selected when continuing
to hold [VFO/MR•S.MW] after programming.
y To program a frequency for the other pair of scan edges,
0B to 49B, repeat steps w to r.
If the same frequency is programmed into a pair of scan edges,
programmed scan will not function.
[EXAMPLE]: Programming 144.000 MHz into scan edge 1A.
Push Rotate for setting frequency, etc. Push for 1 sec.
Rotate Push for 1 sec. and continue to push
Beep
Beep
Beep
Beep
Beep
Beep
S.MW
VFO/MR
S.MW
VFO/MR
S.MW
VFO/MR
Release
S.MW
VFO/MR
Scan edges programming
36
6
SCAN OPERATION
6
D Skip channel/frequency setting
You can set the selected memory channel as a skip channel
which is skipped during memory skip scan. In addition, it can
be set as a skip channel for both memory skip scan and fre-
quency skip scan. These are useful to speed up the scan in-
terval.
q Select a memory channel.
Push the main band’s [VFO/MR•S.MW] once or twice
to select memory mode
, then rotate the same band’s
[DIAL] to select the desired memory channel to be a
skip channel.
•“!” and memory channel number appear.
w Push and hold [SET•SKIP] for 1 sec. several times to set
the skip condition.
• (no indication): The channel is scanned during scan.
~ : The channel is skipped during scan.
P
~ : The channel is skipped during scan and the pro-
grammed frequency is skipped during VFO scan,
such as programmed scan.
D Skip scan setting [
q Push the main band’s [VFO/MR•S.MW] once or twice to
select VFO mode
.
w Push [SET•SKIP] to enter set mode
.
e Push [SET•LOCK] or [ATT•PRIO] several times until
“PSC” appears.
r Rotate the main band’s [DIAL] to toggle the skip scan
function ON and OFF.
t Push any key for the main band to exit set mode
.
y Then start the scan to activate the skip scan (memory skip
scan or frequency skip scan).
[DIAL]
[VFO/MR•S.MW]
[SET•SKIP]
[DIAL]
[VFO/MR•S.MW]
The display shows that
memory channel 16 is
set as a skip channel.
[SET•SKIP]
Skip scan
37
6
SCAN OPERATION
The scan resume condition can be selected a timed timer or
pause scan. The selected resume condition is also used for
priority watch. (p. 38)
q Push
[MAIN•AGC] (or [MAIN•NB])
to select the desired
band (left or right) as the main band.
w Push
[SET•
SKIP
]
to enter set mode.
e Push
[SET•
SKIP
]
or [ATT•PRIO] several times until “SCt”
or “SCP” appears.
r Rotate the main band’s [DIAL] to set the desired timer:
• “SCP-2” : Scan pauses until the signal disappears and then
resumes 2 sec. later.
“SCt-15” : Scan pauses 15 sec. while receiving a signal.
“SCt-10” : Scan pauses 10 sec. while receiving a signal.
• “SCt-5” : Scan pauses 5 sec. while receiving a signal.
t Push any key for the main band to exit set mode.
[DIAL]
[ATT•PRIO]
[SET•SKIP]
[MAIN•AGC]
[MAIN•NB]
[SET•SKIP]
The display shows that the
scan will resume 15 sec. after it
stops.
Scan resume condition
USING
SET MODE
44
9
DIGITAL MODE OPERATION
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
r Rotate the left band’s [DIAL] to select the desired call sign
or code.
• Push [MODE•SCAN] (or [MONI•T/T-SCAN]) to move the cursor.
t Push any key for the main band to exit set mode.
y Push and hold [MONI•T/T-SCAN] for 1 sec. to enter tone
squelch selection mode, then rotate left band’s [DIAL] until
S” or “S ” appears to turn the pocket beep func-
tion ON with digital call sign squelch or digital code
squelch for DV mode (digital NAC squelch or digital selec-
tive squelch for P25 mode), respectively.
• DV mode operation
Appears when the pocket
beep with digital call sign
squelch is turned ON.
Appears when the pocket
beep with digital code
squelch is turned ON.
• P25 mode operation
Appears when the pocket
beep with digital Selective
squelch is turned ON.
Appears when the pocket
beep with digital NAC
squelch is turned ON.
[MONI•T/T-SCAN]
[DIAL]
[DIAL]
[MODE•SCAN]
[MONI•T/T-SCAN]
• Display dimmer• Auto power OFF• Key-touch beep • Beep output level • Display color
• Display contrast
• Rx TGID indication • Rx Unit ID indication
• Auto Rx ID display
• Unit ID setting
• TGID setting
• NAC code setting • P25 unit power setting
Appears when accessing set mode from VFO mode only.
Appears when accessing set mode from memory mode only.
*
1
Available for USA/CANADA versions only.
*
2
Appears while in FM mode only.
*
3
Appears while in SSB/CW mode only.
*
4
Appears when the UT-106 is selected.
*
5
Appears when the UT-118 or UT-122 is installed.
: Push
: Push
SET
SKIP
ATT
PRIO
These items appear
when the UT-122 is
installed, and Optional
items setting is ON.
Set mode items
for DV mode
are described
on ((page 51)).
General
Set mode operation
q Push the desired band’s
[MAIN]
to select the main band.
w Push
[SET•
SKIP
]
to enter set mode.
e Push
[SET•SKIP]
or [ATT•PRIO] to select the desired
item.
r Rotate the main band’s [DIAL] to select the condition or
value.
t Push any key for main band or or any of the shared keys
below the display to exit set mode
.
Set mode items
49
SET MODE
10
52
10
SET MODE
10
DD
Key-touch beep
The key-touch beep can be turned OFF for silent operation.
(default: ON)
Even when this item is set to OFF, the power-on beep and
pocket beep function still sound. The power-on beep can
not be set to OFF.
DD
Beep output level
Adust the beep level from 1 to 9 for key-touch beep, power-on
beep and pocket beep function. (default: 5)
When the previous set mode item “bEP” is set to OFF, this
setting level does not affect key-touch.
DD
Auto power OFF
The receiver can be set to automatically turn OFF with a beep
after a specified period during which no key operations are
performed.
30 min., 1 hour, 2 hours and OFF can be specied. The spec-
ied period is retained even when the receiver is turned OFF
by the auto power OFF function. To cancel the function, select
“OF” for this item in set mode
. (default: OFF)
DD
Display dimmer
Adjust the display lighting level.
The levels 1 (dark) to 4 (bright: default) are available.
67
11
OTHER FUNCTIONS
Partial reset
If you want to initialize the operating conditions (VFO fre-
quency, VFO settings, set mode contents) without clearing
the memory contents, a partial reset function is available.
While pushing either band’s [VFO/MR•S.MW], turn the
power ON to partially reset the both bands at same time.
All reset
The function display may occasionally display erroneous in-
formation (e.g. when first applying power). This may be
caused externally by static electricity or by other factors.
If this problem occurs, turn power OFF. After waiting a few
seconds, turn power ON again. If the problem persists, per-
form the following procedure.
• Partial resetting is also available. See left for details.
IMPORTANT!:
Resetting the receiver CLEARS all memory information
and initializes all values in the receiver to their default set-
tings.
While pushing both band’s [MHz•TS], turn the power ON
to reset the CPU.
[MHz•TS]
While pushing both [MHz•TS], turn power ON.
[MHz•TS]
AT
POWER ON
[VFO/MR•S.MW] [VFO/MR•S.MW]
AT
POWER ON
74

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