Icom IC-R1500 User manual

INSTRUCTION MANUAL
iR1500
COMMUNICATIONS RECEIVER

i
FOREWORD
Thank you for purchasing this Icom product. The IC-R1500
COMMUNICATIONS RECEIVER is designed and built with Icom’s
state of the art technology and craftsmanship. With proper
care, this product 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 your IC-R1500 your radio of choice, and hope
you agree with Icom’s philosophy of “technology first.” Many
hours of research and development went into the design of
your IC-R1500.
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
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-R1500.
EXPLICIT DEFINITIONS
WORD DEFINITION
RWARNING!
CAUTION
NOTE
Personal injury, fire hazard or electric shock
may occur.
Equipment damage may occur.
Recommended for optimum use. No risk of
personal injury, fire or electric shock.
Icom, Icom Inc. and the logo are registered trademarks of Icom Incor-
porated (Japan) in the United States, the United Kingdom, Germany, France,
Spain, Russia and/or other countries.

ii
RWARNING! NEVER connect the receiver via the OPC-
254L to anAC outlet. This may pose a fire hazard or result in an elec-
tric shock.
RWARNING! NEVER operate the receiver while driving a
vehicle. Safe driving requires your full attention— anything less may
result in an accident.
NEVERconnect the receiver to a power source of more than 14 V
DC. This will damage the receiver.
NEVERconnect the receiver to a power source using reverse po-
larity. 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.
NEVER expose the receiver to rain, snow or any liquids. The re-
ceiver 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 operating 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 alcohol
when cleaning, as they can damage the receiver’s surfaces.
For U.S.A. only
CAUTION: Changes or modifications to this device, not ex-
pressly approved by Icom Inc., could void your authority to
operate this device under FCC regulations.
PRECAUTIONS

iii
SUPPLIED ACCESSORIES
Supplied accessories is described in the IC-PCR1500’s In-
struction manual.
TABLE OF CONTENTS
FOREWORD ........................................................................................... i
IMPORTANT ............................................................................................ i
EXPLICIT DEFINITIONS ......................................................................... i
PRECAUTIONS ...................................................................................... ii
SUPPLIED ACCESSORIES .................................................................. iii
SPECIFICATIONS ................................................................................. iii
OPTIONS ............................................................................................... iii
TABLE OF CONTENTS ......................................................................... iii
1CONNECTION .............................................................................. 1–2
■Rear panel connection.................................................................... 1
■Antenna installation ........................................................................ 2
2PANEL DESCRIPTION ................................................................. 3–7
■Front panel—controller .................................................................. 3
■Function display—controller ........................................................... 5
■Rear panel—main unit ................................................................... 7
3SETTING A FREQUENCY .......................................................... 8–10
■Turning power ON/OFF ................................................................. 8
■Mode selection ............................................................................... 8
■Tuning step selection ..................................................................... 9
■Setting a frequency ........................................................................ 9
■Receive mode selection ............................................................... 10
4BASIC OPERATION ................................................................. 11–15
■Receiving ..................................................................................... 11
■Monitor function ............................................................................ 11
■Lock function ................................................................................ 11
■Attenuator function........................................................................ 12
■NB function .................................................................................. 12
■AGC function ................................................................................ 12
OPTIONS
UT-106* DSP UNIT
Provides AF DSP functions such as noise reduction and auto notch.
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
*: UT-106 installation is described in the IC-PCR1500’s Instruction
manual.
SPECIFICATIONS
Specifications is described in the IC-PCR1500’s Instruction
manual.

iv
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
■AFC function ................................................................................ 13
■VSC function ................................................................................ 13
■IF filter selection ........................................................................... 14
■IF shift function ............................................................................. 14
■Duplex operation .......................................................................... 15
5MEMORY OPERATION ............................................................ 16–24
■General description ...................................................................... 16
■Memory channel selection ........................................................... 16
■Programming a memory channel ................................................. 17
■Programming channel names ..................................................... 18
■Copying memory contents ........................................................... 19
■Memory clearing .......................................................................... 21
■Memory bank setting .................................................................... 22
■Memory bank selection ................................................................ 23
■Transferring bank contents .......................................................... 23
6SCAN OPERATION .................................................................. 25–29
■Scan types ................................................................................... 25
■Scan start/stop ............................................................................. 26
■Scan edges programming ............................................................ 27
■Skip scan ..................................................................................... 28
■Scan resume condition ................................................................ 29
7PRIORITY WATCH .......................................................................... 30
■Priority watch types ...................................................................... 30
■Priority watch operation ............................................................... 30
8POCKET BEEP AND TONE SQUELCH ................................... 31–34
■Pocket beep operation ................................................................. 31
■Tone/DTCS squelch operation ..................................................... 33
■Tone scan ..................................................................................... 34
9SET MODE ................................................................................ 35–41
■General ........................................................................................ 35
■Set mode items ............................................................................ 35
10 OTHER FUNCTIONS ................................................................ 42–46
■Weather channel operation .......................................................... 42
■DSP operation .............................................................................. 43
■DATA cloning ................................................................................ 44
■Partial reset................................................................................... 45
■All reset......................................................................................... 45
■Internal audio switch..................................................................... 46
11 TROUBLESHOOTING .................................................................... 47
12 DOC ................................................................................................. 48

1
CONNECTION
1
■Rear panel connection DDC 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
RCAUTION! NEVER remove the fuse-
holders from the DC power cable.
Connects 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.
DFuse replacement
Receiver
Fuses (4 A)
DC power
supply 12 V
to an
AC outlet
−⊕
Ferrite core
Controller
CP-12L
(optional)
To a cigarette lighter socket
Fuse (4 A)
Or
Receiver
To ground
Supplied antenna
The double sided tape is set to the antenna holder.
Remove the protective paper when the antenna is
fixed to any place.
To AC adapter

2
1
CONNECTION
1
DDOPC-1156 connection
qConnect the controller plug to the OPC-1156 joint.
wDetach the ferrite core from the controller cable, then at-
tach it to the OPC-1156 as shown below.
• Make sure to roll the cable to the ferrite core.
eConnect the OPC-1156 plug to the [CONTROLLER] con-
nector of the receiver.
■Antennal installation
DAntenna location
To obtain maximum performance from the receiver, select a
high-quality antenna and mount it in a good location. A non-
radial antenna should be used when using a magnetic mount.
Receiver
OPC-1156
Controller
Joint
Ferrite core

3
PANEL DESCRIPTION
2
qSET•LOCK SWITCH [SET•LOCK]
➥Push to enter set mode. ((p. 35))
➥Push and hold for 1 sec. to turn the lock function ON
and OFF. ((p. 11))
wTUNING STEP/MODE SWITCH [TS•MODE]
➥Push to enter tuning step selection mode. ((p. 9))
•Rotate [DIAL] to select the desired tuning step.
➥Push and hold for 1 sec. to enter receive mode selec-
tion mode. ((p. 10))
•Rotate [DIAL] to select the desired operating mode.
eVOLUME CONTROL [VOL] ((p. 11))
Adjusts the audio level.
rPOWER SWITCH FOR CONTROLLER [PWR]
Push to turn the controller power ON when it’s OFF.
•Push and hold for 1 sec. to turn the controller power OFF when
it’s ON.
tSQUELCH CONTROL [SQL]
Varies the squelch level. ((p. 11))
S
E
T
L
O
C
K
S
.
M
W
M
W
rewq
!2 !1 !0 oiuy t
Function display ((p. 5))
■Front panel—controller

4
2
PANEL DESCRIPTION
2
yMONITOR•TONE•TONE SCAN SWITCH
[MONI•T/T-SCAN]
➥Push to turn the monitor function ON and OFF. ((p. 11))
➥Push and hold for 1 sec. to enter tone squelch selection
mode. ((pgs. 31, 33))
•Tone squelch, pocket beep (CTCSS), tone squelch reverse
action, DTCS squelch, pocket beep (DTCS), DTCS squelch
reverse action or tone function OFF can be selected.
➥Push and hold for 1 sec. during tone squelch selection
mode to start the tone scan. ((p. 34))
uNOISE BLANKER/AUTOMATIC GAIN CONTROL
SWITCH [NB•AGC]
➥Push to turn the NB (Noise Blanker) function ON and
OFF. ((p. 12))
•The noise blanker function cannot be used in FM/WFM modes.
➥Push and hold for 1 sec. to select the AGC (Automatic
Gain Control) function Slow and Fast. ((p. 12))
While in FM or WFM mode, theAGC function is fixed
as Fast and AGC Slow cannot be selected.
iATTENUATOR/PRIORITY SWITCH [ATT•PRIO]
➥Push to turn theATT (Attenuator) function ON and OFF.
((p. 12))
➥Starts priority watch when pushed and held for 1 sec.
((p. 30))
oMEMORY/SKIP SWITCH [MR•SKIP]
➥Push to select the memory channel, memory bank or
weather channel* modes. ((pgs. 16, 23, 42))
*Weather channels are available for USA/CANADA versions
only.
➥Push and hold for 1 sec. to turn the channel skip setting
ON and OFF for memory/frequency skip scan operation.
((p. 28))
!0 VFO/MHz TUNING•SCAN SWITCH [V/MHz•SCAN]
➥Selects and toggles VFO mode and band selection,
1MHz or 10 MHz tuning when pushed. ((p. 9))
➥Starts scan when pushed and held for 1 sec. ((p. 26))
•Cancels a scan when pushed during scan.
!1 TUNING DIAL [DIAL]
Selects the operating frequency ((p. 9)), memory channel
((p. 16)), the setting of the set mode item ((p. 35)) and the
scanning direction ((p. 26)).
!2 MEMORY WRITE SWITCH [S.MW•MW] ((pgs. 17, 18, 21))
➥Selects a memory channel for programming when
pushed.
➥Programs the selected memory channel when pushed
and held for 1 sec.
!3 POWER SWITCH FOR RECEIVER [POWER]
Turns the receiver power ON and OFF.
!3

5
2PANEL DESCRIPTION
qAFC INDICATOR
Appears when the AFC function is in use. ((p. 13))
wFM CENTER INDICATORS
➥“”or “ ” appears when the received signal is not
tuned to its center frequency; or the squelch is closed.
➥“”appears when the received signal is tuned to its
center frequency.
eRECEIVE MODE INDICATORS
Shows the selected receive mode.
•SSB (LSB/USB), CW, AM and FM (FM/WFM) are available.
rAGC INDICATOR ((p. 12))
Appears when theAGC fast is selected in SSB, CW or AM
mode.
tNB INDICATOR ((p. 12))
Appears when the NB function is in use.
e r t yq w
!7 !6 !5 !4 !3 !0
o
u
!8
!2 !1
i
!9
■Function display—controller

6
2
PANEL DESCRIPTION
2
yDSP INDICATOR ((p. 43))
Appears when the DSP digital filter function is in use.
•The DSP function requires an optional UT-106 installation.
uFREQUENCY READOUT
Shows the operating frequency, channel names, set mode
contents, etc.
•Frequency decimal point blinks while scanning. ((p. 26))
iMEMORY INDICATOR ((p. 16))
Appears when memory mode is selected.
oAUTO POWER-OFF INDICATOR ((p. 36))
Appears while the auto power OFF function is in use.
!0PRIORITY INDICATOR ((p. 30))
Appears while the priority watch is activated; blinks while
the watch is paused.
!1MEMORY CHANNEL NUMBER INDICATORS
➥Shows the selected memory channel number. ((p. 16))
➥Shows the selected bank initial. ((p. 23))
➥“L” appears when the lock function is activated. ((p. 11))
!2SKIP INDICATORS ((p. 28))
➥“~” appears when the displayed memory channel is
specified as a skip channel.
➥“
P
~” appears when the displayed frequency is speci-
fied as a program skip frequency.
!3VSC INDICATOR ((p. 13))
Appears when the VSC function is in use.
!4TONE SQUELCH INDICATOR ((p. 33))
Appears when the tone squelch function is in use.
!5POCKET BEEP INDICATOR ((p. 32))
Appears with “ ” or “ ” while the pocket beep function
(with CTCSS or DTCS) is in use.
!6DTCS SQUELCH INDICATOR ((p. 33))
Appears while the DTCS squelch function is in use.
!7ATT INDICATOR ((p. 12))
Appears when the ATT function is in use.
!8BUSY INDICATOR
➥Appears when a signal is being received or the squelch
is open. ((p. 11))
➥Blinks while the monitor function is in use. ((p. 11))
!9S-METER INDICATORS
Shows the relative signal strength while receiving signals.
((p. 11))

7
2PANEL DESCRIPTION
qANTENNA CONNECTOR [ANT]
Connects a 50 Ωantenna with a BNC connector and a 50
Ωcoaxial cable.
wDATA JACK [PACKET]
Connects a TNC (Terminal Node Controller), etc. for data
communications. The receiver can receive 9600 bps
packet communication (AFSK).
eUSB CONNECTOR [USB]
Connects to a PC via the supplied USB cable.
rEXTERNAL SPEAKER JACK [EXT SP]
Connects an 8 Ωexternal speaker.
•Audio output power is more than 0.5 W.
tCONTROLLER [CONTROLLER]
Connects to a controller via an extension cable.
yPOWER JACK [DC IN]
Accepts 12 V DC ±15% with the supplied DC power cable.
uGROUND TERMINAL [GND]
Connect this terminal to a ground.
Front
Top
Rear Power switch
Speaker
qwer
u
yt
2-conductor 3.5 (d) mm (1⁄8˝)/100 kΩ
PACKET jack connection
2-conductor 3.5 (d) mm (1⁄8˝)/8 Ω
EXT SP jack connection
PACKET
GND
SP
GND
■Rear panel—main unit

8
3
SETTING A FREQUENCY
2
3
■Turning power ON/OFF
➥While receiver’s power is OFF, push [PWR] to turn power
ON.
•While receiver power is ON, push and hold [PWR] for 1 sec. to
turn power OFF.
■Mode selection
DVFO modes
VFO mode is used for the desired frequency setting within the
frequency coverage.
➥Push [V/MHz•SCAN] to select VFO mode.
What is VFO?
VFO is an abbreviation of Variable Frequency Oscillator. Fre-
quencies for receiving are generated and controlled by the
VFO.
DMemory mode/Weather channels*
Memory mode is used for operation of memory channels
which have programmed frequencies. Weather channels* are
monitored each 5 sec. when the weather alert function is
turned ON.
*Available for USA/CANADAversions only.
qPush [MR•SKIP] to select memory mode.
•“!” indicator appears when memory mode is selected.
➥Or push [MR•SKIP] twice and rotate [DIAL] to select the
Weather channel mode, then push [MR•SKIP] again.
•Memory mode, memory banks or Weather channels can be
selected in sequence.
•If weather channel mode is already selected, and you want to
select memory channel mode. Push [MR•SKIP] and rotate
[DIAL] to select “bAnk --,” then push [MR•SKIP] again.
wRotate [DIAL] to select the desired channel.
•Only programmed memory channels can be selected.
•See ((p. 16)) for memory programming details.
[DIAL]
[MR•SKIP]
[V/MHz•SCAN]
[PWR]

9
3SETTING A FREQUENCY
■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)
qPush [V/MHz•SCAN] to select VFO mode, if necessary.
wPush [TS•MODE] to enter tuning step select mode.
eRotate [DIAL] to select the desired tuning step.
rPush any switch to exit tuning step select mode.
■Setting a frequency
qRotate [DIAL] to set the frequency.
•If VFO mode is not selected, push [V/MHz•SCAN] to select VFO
mode.
•The frequency changes in the selected tuning steps.
wTo change the frequency band or in 1 MHz (10 MHz) steps,
push [V/MHz•SCAN], then rotate [DIAL].
•Pushing and holding [V/MHz•SCAN] for 1 sec. starts scan func-
tion. If scan starts, push [V/MHz•SCAN] again to cancel it.
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.
[DIAL]
[V/MHz•SCAN]
[DIAL]
[TS•MODE]

10
3
SETTING A FREQUENCY
3
■Receive mode selection
Receive modes are determined by the physical properties of
the radio signals. The receiver has 6 receive modes: LSB
USB, CW, AM, WFM and FM modes. The mode selection is
stored independently in each memory channels.
Typically, AM mode is used for the AM broadcast stations
(0.495–1.620 MHz) and air band (118–135.995 MHz), and
WFM is used for FM broadcast stations (76–107.9 MHz).
qPush and hold [TS•MODE] for 1 sec. to enter receive
mode select mode.
wRotate [DIAL] to select the desired mode.
ePush any switch to exit receive mode select mode.
[DIAL]
[TS•MODE]

11
BASIC OPERATION
4
■Receiving
qPush and hold [PWR] for 1 sec. to turn power ON.
wSet the audio level.
➥Push [MONI•T/T-SCAN] to open the squelch.
➥Rotate [VOL] to adjust the audio level.
➥Push [MONI•T/T-SCAN] to close the squelch.
eSet the squelch level.
➥Rotate [SQL] fully counterclockwise in advance, then
rotate [SQL] clockwise until the noise just disappears.
•When interference is received, push [ATT•PRIO] momentarily
to turn the attenuator function. ((p. 12))
rSet the receive frequency and mode. ((pgs. 9, 10))
tWhen receiving a signal on the set frequency, squelch
opens and the receiver emits audio.
•“BUSY” appears and the S-meter indicator 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.
➥Push [MONI•T/T-SCAN] to open the squelch.
•Push [MONI•T/T-SCAN] again to cancel the function.
■Lock function
To prevent accidental frequency changes and unnecessary
function access, use the lock function.
➥Push and hold [SET•LOCK] for 1 sec. to turn the lock func-
tion ON and OFF.
•[SET•LOCK] (lock function only), [MONI•T/T-SCAN] (monitor
function only), [PWR], [VOL] and [SQL] can be used while the
lock function is in use.
[SET•LOCK] Appears
[MONI•T/T-SCAN] “BUSY” blinks
[PWR]
[VOL]
[SQL]
[MONI•T/T-SCAN]

12
4
BASIC OPERATION
4
■Attenuator function
The attenuator prevents a desired signal from distorting when
very strong signals are near the desired frequency or when
very strong electric fields, such as from a broadcasting sta-
tion, are near your location. The attenuator gain is 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.
•“ATT” appears when the attenuator function is in use.
■NB function
The NB (noise blanker) function removes pulse-type noise
when SSB, CW or AM mode is selected.
➥Push [NB•AGC] to toggle the NB function ON and OFF.
•“NB” appears when the NB function is in use.
■AGC function
The AGC (Automatic Gain Control) function controls receiver
gain to produce a constant audio output level even when the
received signal strength is varied by fading, etc. This AGC
function is available for SSB, CW or AM mode.
➥Push and hold [NB•AGC] for 1 sec. to toggle the AGC
function Slow and Fast.
•“AGC” appears when the AGC function (FAST) is selected in
SSB, CW or AM mode.
While in FM or WFM mode, the AGC function is fixed as
Fast and AGC Slow cannot be selected.
[NB•AGC] “AGC” appears
[NB•AGC] “NB” appears
[ATT•PRIO] Appears

13
4BASIC 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 filter is 6 kHz or 15 kHz.
qSelect FM mode.
wPush [SET•LOCK] to enter set mode.
ePush [SET•LOCK] or [S.MW•MW] several times until
“AFC” appears.
rRotate [DIAL] to toggle the AFC function ON and OFF.
tPush [TS•MODE] or any switch below the display to exit
set mode.
•“AFC” appears when the AFC function is in use.
■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.
qPush [SET•LOCK] to enter set mode.
wPush [SET•LOCK] or [S.MW•MW] several times until
“VSC” appears.
eRotate [DIAL] to toggle the VSC function ON and OFF.
rPush [TS•MODE] or any switch below the display to exit
set mode.
“VSC” appears
[DIAL]
[S.MW•MW]
[SET•LOCK]
Appears
[DIAL]
[S.MW•MW]
[SET•LOCK]

14
4
BASIC OPERATION
4
■IF filter selection [
The receiver has 2 to 4 passband width IF filters for each
mode. Selectable passband width are from 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
qPush [SET•LOCK] to enter set mode.
wPush [SET•LOCK] or [S.MW•MW] several times until “FIL”
appears.
eRotate [DIAL] to select the desired IF passband width.
rPush [TS•MODE] or any switch below the display to exit
set mode.
■IF shift function [
The IF shift function electronically changes the passband fre-
quency of the IF (Intermediate frequency) and cuts out higher
or lower frequency components of the IF to reject interfer-
ence. This function is available when the receive mode is se-
lected SSB or CW mode, and shifts the IF frequency up to
±25 steps in 1 step (50 Hz).
qPush [SET•LOCK] to enter set mode.
wPush [SET•LOCK] or [S.MW•MW] several times until
“SFt” appears.
eRotate [DIAL] to set the shifting direction and frequency
range.
rPush [TS•MODE] or any switch below the display to exit
set mode.
Center position
(default)
HighestLowest
[DIAL]
[S.MW•MW]
[SET•LOCK]
[DIAL]
[S.MW•MW]
[SET•LOCK]

15
4BASIC OPERATION
Duplex communication uses two different frequencies for trans-
mitting and receiving. Generally, duplex is used in communi-
cation 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. 16))
DDSetting [
qPush [SET•LOCK] to enter set mode.
wPush [SET•LOCK] or [S.MW•MW] several times until the
duplex direction setting item “OFF dP,” “DUP– dP” or “DUP+
dP” appears.
eRotate [DIAL] to select the duplex direction, “DUP– dP” or
“DUP+ dP.”
rPush [SET•LOCK] once to select the offset frequency set-
ting item.
tRotate [DIAL] to set the desired offset frequency within
0.000–1000.000 MHz range.
•The tuning step, selected in VFO mode, is used for setting.
•Push [V/MHz• SCAN] then rotate [DIAL] to change the fre-
quency in 10 MHz steps, or push again then rotate [DIAL] to
change the frequency in 1 MHz steps. (Each push toggles
1MHz, 10 MHz or selected tuning steps.)
yPush [TS•MODE] or any switch below the display to exit
set mode.
DDOperation
qSet the receive station frequency (repeater output frequency).
wPush [MONI•T/T-SCAN] to monitor the transmit station fre-
quency (repeater input frequency) directly.
[MONI•T/T-SCAN] Frequency shifts
the offset frequency
[DIAL]
[S.MW•MW]
[SET•LOCK]
■Duplex operation