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INSTRUCTION MANUAL
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.
iR2
COMMUNICATIONS RECEIVER
i
FOREWORD
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-R2.
EXPLICIT DEFINITIONS
The explicit definitions below apply to this instruction manual.
CAUTIONS
RWARNING! NEVER operate the receiver with a head-
set or other audio accessories at high volume levels. Hearing
experts advise against continuous high volume operation. If
you experience a ringing in your ears, reduce the volume level
or discontinue use.
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).
Even when the receiver power is OFF, a slight current still
flows in the circuits. Remove batteries from the receiver when
not using it for a long time. Otherwise, the installed batteries
will become exhausted.
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.
WORD
R
WARNING
CAUTION
NOTE
DEFINITION
Personal injury, fire hazard or electric
shock may occur.
If disregarded, inconvenience only. No risk
of personal injury, fire or electric shock.
Equipment damage may occur.
Versions of the IC-R2 which display CEon the serial number
seal, comply with the essential requirements of the 89/336/EEC
directive for Electromagnetic Compatibility.
ii
SUPPLIED ACCESSORIES
Accessories included with the receiver: Qty.
q Antenna (FA-S270C) ...................................................... 1
w Handstrap ....................................................................... 1
e Belt clip ........................................................................... 1
r Ni-Cd charger (BC-127A/D) and 2 Ni-Cd batteries ..1 set*
*Not supplied with some versions.
OPERATING THEORY
Electromagnetic radiation which has frequencies of 20,000
Hz (20 kHz*) and above is called radio frequency (RF) energy
because it is useful in radio transmissions. The IC-R2 re-
ceives RF energy from 0.495 MHz* to 1309.995 MHz and
converts it into audio frequency (AF) energy which in turn ac-
tuates a loudspeaker to create sound waves. AF energy is in
the range of 20 to 20,000 Hz.
*kHz is an abbreviation of kilohertz or 1000 hertz, MHz is abbrevia-
tion of megahertz or 1,000,000 hertz, where hertz is a unit of fre-
quency.
OPERATING NOTES
The IC-R2 may receive its own oscillated frequency, resulting
in no reception or only noise reception, on some frequencies.
The IC-R2 may receive interference from extremely strong
signals on different frequencies or when using an external
high-gain antenna.
qw e
r
FOREWORD ...................................... i
EXPLICIT DEFINITIONS ................... i
CAUTIONS ......................................... i
SUPPLIED ACCESSORIES .............. ii
OPERATING THEORY ...................... ii
OPERATING NOTES ........................ ii
TABLE OF CONTENTS .................... iii
1 ACCESSORY ATTACHMENT ..... 1
2 PANEL DESCRIPTION .......... 25
Panel description ...................... 2
Function display ........................ 4
3 FREQUENCY AND CHANNEL
SETTING ................................ 68
VFO and memory channels ...... 6
Operating band selection .......... 6
Setting a frequency ................... 7
Setting a tuning step ................. 7
Selecting a memory channel .... 8
Lock function ............................ 8
Attenuator function ................... 8
4 BASIC OPERATION ............. 911
Receiving .................................. 9
Setting volume level ................ 10
Setting squelch level ............... 10
Monitor function ...................... 10
Receive mode selection ......... 11
Display backlighting ................ 11
5 MEMORY CHANNELS ....... 1214
General ................................... 12
Programming during selection 12
Programming after selection ... 13
Transferring memory contents
to another memory ................. 13
Memory bank selection .......... 14
Memory clear .......................... 14
6 SCAN OPERATION ............ 1519
Scan types .............................. 15
Full/band/programmed scan ... 16
Memory (bank) scan ............... 16
Selecting scan edges ............. 17
Skip channel setting ............... 18
Scan resume condition ........... 18
Frequency skip function .......... 19
7 PRIORITY WATCH ............. 2021
Priority watch types ................ 20
Priority watch operation .......... 21
8 SUBAUDIBLE TONE
OPERATION ....................... 2223
Tone squelch operation .......... 22
Pocket beep operation ............ 23
Tone scan ............................... 23
9 DUPLEX OPERATION .............. 24
10 OTHER FUNCTIONS ......... 2530
Set mode ................................ 25
Dial select step ....................... 26
Beep tones ............................. 26
Power saver ............................ 26
Auto power-off function ........... 27
Monitor switch action .............. 27
Dial speed acceleration .......... 28
Lock function effect ................. 28
Channel indication mode ........ 29
Cloning function ...................... 29
Partial reset ............................ 30
All reset ................................... 30
11 TROUBLESHOOTING .............. 31
12
OPERATION FLOW CHART
..3233
13 SPECIFICATIONS AND
OPTIONS ............................ 3435
iii
TABLE OF CONTENTS
1
1
ACCESSORY ATTACHMENT
D Antenna
Insert the supplied antenna into the an-
tenna connector and screw down the an-
tenna as shown at right.
Keep the jack cover attached when jack
is not in use to avoid bad contacts from
dust and moisture.
Commercially available antennas may increase receiver per-
formance. An optional AD-92SMA
ANTENNA CONNECTOR
ADAPTER is available to connect an antenna with a BNC con-
nector.
D Battery installation
q Remove the battery cover
from the receiver.
w Install 2 R6 (AA) size al-
kaline, dry cell or Ni-Cd
batteries.
Be sure to observe the cor-
rect polarity.
Charge Ni-Cd batteries be-
fore use. (See the separate
BC-127A/D instruction
sheet.)
Keep battery contacts clean. Its a good idea to clean bat-
tery terminals once a week.
DBelt clip
Conveniently attaches to
your belt.
Slide the belt clip into the
plastic loop on the back of
the receiver.
DHandstrap
Slide the handstrap through the loop
on the side of the belt clip as illus-
trated at right. Facilitates carrying.
Panel description
q ANTENNA CONNECTOR (p. 1)
Connects the supplied antenna.
An optional AD-92SMA is available for connecting an antenna
with a BNC connector.
w MONITOR SWITCH [SQL] (pgs. 10, 27)
Push and hold to temporarily open the squelch and
monitor the operating frequency. (default behaviour)
While pushing, rotate the tuning dial to set the squelch
threshold level.
Push [FUNC] + [SQL] to toggle the attenuator circuit ON
and OFF.
e FUNCTION SWITCH [FUNC]
While pushing this switch, other switches and tuning dial
perform secondary functions.
•“Push [FUNC] + a switch means while pushing the [FUNC]
switch, push the switch.
r BAND SWITCH [BAND]
Push to select the operating band (VHF, UHF, etc.).(p. 6)
Broadcast band, HF band, 50 MHz band, VHF avionics band,
144 MHz band, 300 MHz band, 400 MHz band, 800 MHz
band and 1200 MHz band can be selected.
While pushing this switch, rotating [DIAL] also selects the op-
erating band.
Transfers the displayed frequency to the VFO in mem-
ory mode. (p. 6)
Push [FUNC] + [BAND] to enter the scan edge set mode
in VFO mode. (p. 17)
Push [FUNC] + [BAND] to enter the bank scan set mode
in memory mode. (p. 16)
2
2
PANEL DESCRIPTION
q
w
e
r
t
y
u
i
o
Function display
(p. 4)
SPEAKER
!0
!1
3
2
PANEL DESCRIPTION
t VOLUME CONTROL SWITCHES [VOLY]/[VOLZ]
Push to adjust the audio level. (p. 10)
Push [FUNC] + either switch to start a scan. (p. 16)
Push [FUNC] + either switch for 2 sec. to start a tone
scan. (p. 23)
y VFO/MEMORY SWITCH [V/M (MW)]
Toggles between VFO and memory modes. (p. 6)
Enters set mode when pushed for 2 sec. (p. 25)
Push [FUNC] + [
(V/M)MW] to enter memory write mode.
(p. 12)
Push [FUNC] + [
(V/M)MW] for 1 sec. to write the operat-
ing frequency into the selected memory channel in VFO
mode. Keep pushing for 2 sec. or more to automatically
select the next memory channel, if desired. (p. 12)
Push [FUNC] + [
(V/M)MW] for 1 sec. to write the dis-
played frequency into the VFO in memory mode. (p. 13)
u POWER SWITCH [POWER]
Push for 2 sec. to toggle the receiver power ON and OFF.
i TUNING STEP/MEMORY SKIP SWITCH [TS (SKIP)]
Enters tuning step set mode. (p. 7)
Push [FUNC] + [
(TS)SKIP] to toggle the frequency skip
function ON or OFF in VFO mode. (p. 19)
Push [FUNC] + [
(TS)SKIP] for 2 sec. to program the dis-
played frequency as a skip frequency during full, band
or programmed scan. (p. 19)
Push [FUNC] + [
(TS)SKIP] to toggle the channel as skip,
program skip or non-skip channel in memory mode. (p.
18)
o MODE/LOCK SWITCH [MODE (LOCK)]
Selects the receive mode. (p. 11)
Push [FUNC] + [
(MODE)LOCK] to toggle the lock function
ON and OFF. (pgs. 8, 28)
!0 EXTERNAL SPEAKER JACK [SP]
Connects an optional earphone or headphone. The inter-
nal speaker will not function when any external equipment
is connected. (See p. 35 for a list of available options.)
!1 TUNING DIAL [DIAL]
Rotate [DIAL] to set operating frequencies, memory
channels, set mode contents, etc. (p. 7)
While scanning, changes the scanning direction. (p. 16)
While pushing [SQL], sets the squelch level. (p. 10)
While pushing [FUNC], sets the operating frequency in
100 kHz, 1 MHz or 10 MHz steps in VFO mode. (pgs. 7,
26)
While pushing [FUNC], selects memory bank in mem-
ory mode. (p. 12)
While pushing [BAND], selects the operating band in
VFO mode. (p. 6)
4
2
PANEL DESCRIPTION
Function display
q RECEIVE MODE INDICATORS (p. 11)
Show the receive mode.
AM, FM and WFM are available.
w DUPLEX INDICATORS (p. 24)
Appear when semi-duplex operation (repeater operation)
is in use.
•“DUPappears when minus duplex is selected;DUP only, ap-
pears when plus duplex is selected.
e TONE INDICATORS (p. 22)
T SQL appears when the tone squelch function is acti-
vated and TSQLë appears during pocket beep oper-
ation.
ë flashes when the correct tone is received during
pocket beep operation.
r ATTENUATOR INDICATOR
Appears when the attenuator function is in use. (p. 8)
t FREQUENCY READOUT
Shows the operating frequency, set mode contents, etc.
The smaller 75,”“50 and 25 to the right of the readout indicate
7.5, 5.0 and 2.5 kHz, respectively.
The decimal point of the frequency ashes during scan.
y MEMORY CHANNEL READOUT
Shows the memory channel number, etc.
u MEMORY BANK INDICATORS
Indicate 8 memory banks.
•“1”– 3 indicate memory banks 1 to 3; indicates memory
bank 4; 1”– 3indicate memory banks 5 to 7; no bank indi-
cator indicates memory bank 0.
i MEMORY MODE INDICATOR
Appears when a memory channel is selected.
AM FM DUPTSQLW
75
50
25
PRIOPSKIP
1
BUSY
3
2
ATT
MR
9
5
qwe
ui
r
y
t
!0!1!2
!3
!4
o
5
2
PANEL DESCRIPTION
o SKIP SCAN INDICATOR (p. 18)
SKIP appears when a selected memory channel is set
as a skip channel in memory mode.
PSKIPappears when the skip frequency function is
turned ON in VFO mode; or, when the selected memory
channel is set to be skipped during VFO scan (full, band
and programmed scan) in memory mode.
!0 SIGNAL INDICATORS
Shows the relative signal strength while receiving.
!1 PRIORITY WATCH INDICATOR (p. 20)
Appears when priority watch is in use.
!2 BUSY INDICATOR
BUSY appears when receiving a signal or when the
squelch is open.
!3 BATTERY INDICATORS
Both segments appear when the batteries have enough
capacity.
Only the right segment appears when the batteries are
nearing exhaustion.
Flash when battery replacement is necessary.
!4 LOCK INDICATOR (p. 8)
Indicates that the lock function is in use.
6
3
FREQUENCY AND CHANNEL SETTING
VFO and memory channels
This receiver has 2 normal operating modes: VFO mode and
memory mode.
VFO mode is used for setting a desired frequency within the
frequency coverage.
Push [V/M] to select VFO mode.
Memory mode is used for operation of memory channels
which have programmed frequencies.
Push [V/M] to select memory
mode.
To program a memory, refer to p. 12.
What is VFO?
VFO is an abbreviation of Variable Frequency Oscillator. Fre-
quencies for receiving are generated and controlled by the
VFO.
Operating band selection
The receiver can receive
the broadcast band, HF
band, 50 MHz band, VHF
avionics band, 144 MHz
band, 300 MHz band, 400
MHz band, 800 MHz band*
or 1200 MHz band.
Push [BAND] several
times to select the de-
sired band.
When a memory channel
is selected, the first push
of [BAND] selects VFO
mode (and transfers the
memory channel con-
tents).
Rotate [DIAL] while
pushing [BAND] to select
the desired band.
*Some frequencies can-
not be received with
the U.S.A. version.
FM
FM
MR
MR
appears.
FM
30107.995 MHz
AM
108135.995 MHz
1.62529.995 MHz
0.4951.620 MHz
FM
136255.095 MHz
FM
255.1382.095 MHz
FM
382.1769.795 MHz
FM
769.8960.095 MHz
FM
960.11309.995 MHz
AM
AM
BAND
BAND
BAND
BAND
BAND
BAND
BAND
BAND
Setting a frequency
q Select VFO mode with [V/M].
w Select the desired band with [BAND].
e Rotate [DIAL] to change the frequency.
The frequency changes according to the preset tuning steps. See
the right section for selecting the tuning step.
Rotate [DIAL] while pushing [FUNC] to change the frequency in 1
MHz steps (default; p. 26).
The 1 MHz tuning step (dial select step) can be set to 100
kHz, 1 MHz or 10 MHz tuning steps in set mode. See p. 26
for details.
Setting a tuning step
Tuning steps can be selected for each band, however, the tun-
ing step of the broadcast band is xed to 9 kHz steps except
for U.S.A. and Canada versions. The following are available.
5 kHz 6.25 kHz 10 kHz 12.5 kHz 15 kHz
20 kHz 25 kHz 30 kHz 50 kHz 100 kHz
DUsing the [TS] switch
q Select VFO mode with [V/M].
w Select the desired band with
[BAND].
e Push [TS] to enter tuning step set-
ting condition.
r Rotate [DIAL] to select the desired tuning step.
t Push [TS] to return to normal operation.
DUsing set mode
q Select VFO mode with [V/M].
w Select the desired band with [BAND].
e Push [V/M] for 2 sec. to enter set mode.
r Rotate [DIAL] until STEP appears.
•“STEPdisappears after 1 sec. and the previously selected tun-
ing step and tS appear.
t While pushing [FUNC], rotate [DIAL] to select the desired
tuning step.
y Push [V/M] to exit set mode.
7
3
FREQUENCY AND CHANNEL SETTING
15 kHz tuning step
FM
7
5
5
0
2
5
7
5
5
0
2
5
FM
7
5
5
0
2
5
7
5
5
0
2
5
[DIAL] changes the frequency according
to the selected tuning step.
While pushing [FUNC], [DIAL] changes
the frequency in 1 MHz steps (default).
3

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