Icom TV Receiver HF VHF UHF ALL MODE TRANSCEIVER User Manual

INSTRUCTION MANUAL  
HF/VHF/UHF ALL MODE TRANSCEIVER  
i706MKG  
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.  
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TABLE OF CONTENTS  
IMPORTANT ............................................................. i  
PRECAUTIONS ........................................................ i  
EXPLICIT DEFINITIONS .......................................... i  
TABLE OF CONTENTS ............................................ ii  
UNPACKING ............................................................. ii  
5 MEMORY AND SCAN OPERATION ............3944  
Memory channels ..................................................... 39  
Memory channel selection ....................................... 39  
Memory clearing ....................................................... 39  
Memory/call programming ........................................ 40  
Frequency transferring ............................................. 41  
Memory names......................................................... 41  
Memo pads ............................................................... 42  
Scan types ................................................................ 43  
Preparation .............................................................. 43  
Programmed scan operation .................................... 44  
Memory scan operation ............................................ 44  
Select memory scan operation................................. 44  
Priority watch ............................................................ 44  
1 PANEL DESCRIPTION .....................................18  
Front panel ...............................................................  
Function switches .....................................................  
Rear and side panels ...............................................  
Function display........................................................  
Microphone (HM-103)...............................................  
1
3
5
7
8
2 INSTALLATION AND CONNECTIONS ..........914  
Unpacking .................................................................  
Grounding .................................................................  
Antenna ....................................................................  
9
9
9
6 REMOTE JACK (CI-V) INFORMATION ........45–46  
Installation ................................................................ 10  
Required connections ............................................... 11  
Advanced connections ............................................. 12  
Power supply connections ........................................ 13  
External antenna tuners and linear amplifier............ 14  
7 SET MODE ....................................................4755  
General ..................................................................... 47  
Quick set mode items ............................................... 48  
Initial set mode items ............................................... 50  
8 MAINTENANCE ...................................................56  
Fuse replacement ..................................................... 56  
Memory backup ........................................................ 56  
Cleaning ................................................................... 56  
3 FREQUENCY SETTING................................1519  
When first applying power (CPU resetting) .............. 15  
Initial settings ............................................................ 15  
VFO description........................................................ 16  
Frequency setting ..................................................... 17  
Mode selection ......................................................... 19  
9 TROUBLESHOOTING ..................................5758  
10 OPTIONAL INSTALLATIONS/SETTINGS ..5962  
Opening the transceiver case................................... 59  
UT-102 VOICE SYNTHESIZER UNIT ............................... 59  
CR-282 HIGH-STABILITY CRYSTAL UNIT ........................ 60  
IF filters ..................................................................... 60  
UT-106 DSP RECEIVER UNIT ....................................... 61  
MB-72 CARRYING HANDLE .......................................... 61  
AT-180 internal switch description ............................ 62  
4 RECEIVE AND TRANSMIT ..........................2038  
Functions for receive ................................................ 20  
Functions for transmit ............................................... 25  
Split frequency operation.......................................... 29  
Tone squelch operation ............................................ 31  
Tone scan operation ................................................. 31  
One-touch repeater .................................................. 32  
Auto repeater function .............................................. 32  
Functions for CW ...................................................... 33  
Functions for RTTY .................................................. 35  
Packet operation ....................................................... 37  
SWR ......................................................................... 38  
11 INTERNAL VIEWS ............................................63  
12 OPTIONS ....................................................6465  
13 SPECIFICATIONS .............................................66  
14 MENU GUIDE ..............................................67–68  
UNPACKING  
Accessories included with the IC-706MKIIG:  
Qty.  
DC power cable*.....................................................1  
Hand microphone (HM-103)...................................1  
Spare fuse (30 A)...................................................2  
Spare fuse (4 A).....................................................1  
RTTY key plug........................................................1  
Electronic keyer plug ..............................................1  
ACC cable ..............................................................1  
*OPC-639 for Europe versions (differs from the diagram at  
left), OPC-025D for other versions.  
➄ ➅  
ii  
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1
PANEL DESCRIPTION  
Front panel  
w e  
t
y
u
o
r
i
MODE  
AF  
RF/SQL  
HF/VHF/UHF TRANSCEIVER  
i706MK™G  
Y
BAND  
USB  
TS  
POWER  
q
P.AMP/ATT  
RX  
TX  
@
VFO A  
S1  
3
5
7
9
20  
40  
60dB  
10  
RIT/  
SUB  
TUNER/CALL  
@
CH  
PO  
5
!
o
DISPLAY  
@
M-CH  
SHIFT  
SPL  
M1  
A/B A=B  
PHONES  
LOCK  
BAND  
!
MENU  
F-1  
F-2  
F-3  
Z
! !  
!
!
!
! !  
!
qPOWER SWITCH [POWER] (p. 15)  
Turns power ON and OFF.  
Push momentarily to turn power ON.  
yMODE SWITCH [MODE] (p. 19)  
Push momentarily to cycle through the operating  
modes:  
USB/LSB CW/CWå RTTY/åRTTY ➧  
FM/WFM/AM  
Push and hold for 2 sec. to toggle between the  
following operating modes:  
USB LSB  
Push for 2 sec. to turn power OFF.  
w AF GAIN CONTROL [AF] (inner control; p. 15)  
Rotate clockwise to increase the audio output from  
the speaker; rotate counterclockwise to decrease  
the audio output from the speaker.  
CW CWå  
RTTYåRTTY  
FM WFM AM FM, etc.  
eRF GAIN CONTROL/SQUELCH CONTROL  
[RF/SQL] (outer control; p. 22)  
Adjusts the squelch threshold level (to mute noise  
when receiving no signal) in all modes.  
This control can be used for RF gain control to  
adjust receiver gain manually.  
u
RECEIVE/TRANSMIT INDICATORS [RX]/[TX]  
[RX] lights green while receiving (and squelch  
opens); [TX] lights red while transmitting.  
RF gain selection can be set in initial set mode (p. 50).  
RF gain is usable in SSB/CW/RTTY modes only.  
iMAIN DIAL  
Changes the displayed frequency, selects initial set  
mode items, etc.  
rFUNCTION DISPLAY  
Shows the operating frequency, dot matrix indica-  
tions, selected memory channel, etc. See p. 7 for  
details.  
oUP/DOWN (BAND) SWITCHES [Y/Z(BAND)]  
Push to select a band.  
Can also be used to advance quick set mode items,  
initial set mode items, etc.  
Push and hold to scroll through the bands contin-  
uously.  
tTUNING STEP SWITCH [TS] (pgs. 17, 18)  
Push momentarily to cycle between 1 Hz/10 Hz,  
programmable and 1 MHz tuning steps.  
•1 and 10 Hz steps are only available in SSB, CW and  
RTTY modes; 1 MHz steps are only available in FM,  
WFM and AM modes.  
!MAIN DIAL TENSION LATCH  
Selects the main dial tension.  
•2 positions are available.  
Push for 2 sec. to toggle between 1 and 10 Hz  
steps, or; when the programmable tuning steps is  
indicated, push for 2 sec. to enter programmable  
tuning step mode.  
!MICROPHONE CONNECTOR (p. 8)  
Modular-type microphone connector—connects the  
supplied microphone (HM-103).  
The optional OPC-589 can be used to connect an 8-pin  
microphone such as the SM-8 or SM-20, if desired.  
•A microphone connector is also available on the rear  
1
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PANEL DESCRIPTION 1  
panel. DO NOT connect 2 microphones simultaneously.  
!M-CH CONTROL [M-CH] (inner control)  
When the RIT or SUBDIAL functions are OFF,  
rotate to select a memory channel number (p. 35).  
!LOCK SWITCH [LOCK]  
Push momentarily to turn the dial lock function  
ON and OFF.  
Shifts the receive frequency while the RIT func-  
tion is ON in SSB, CW and RTTY modes (see  
below and p. 20).  
The dial lock function electronically locks the main  
dial.  
When the optional UT-102 VOICE SYNTHESIZER  
UNIT is installed (p. 52), push for 2 sec. to have the  
frequency, etc. announced.  
RIT variable range is ± 9.99 kHz  
Changes the operating frequency in the selected  
tuning steps while the SUB DIAL function is ON  
(p. 18).  
UT-102 operation can be adjusted in initial set mode  
(pgs. 53, 54).  
!HEADPHONE JACK [PHONES] (p. 12)  
Accepts headphones with 4–16 impedance.  
When headphones are connected, no receive audio  
comes from the speaker.  
When the PHONES/SPEAKER switch on the back of the  
front panel is set to the [SPEAKER] position, an external  
speaker can be connected. This is convenient for mobile  
or outdoor operation.  
LOCK  
Lights while the lock  
function is activated.  
!DISPLAY SWITCH [DISP] (p. 68)  
Push momentarily to select one of the three menu  
sets: M1 to M4, S1 to S4 and G1 to G4.  
Push for 2 sec. to select quick set mode.  
@TUNER/CALL SWITCH [TUNER/CALL]  
(pgs. 26, 27)  
!FUNCTION SWITCHES [F1]/[F2]/[F3] (pgs. 3, 4, 68)  
Push to select the function indicated in the dot  
matrix display above these switches.  
During HF/50 MHz operation, push this switch  
momentarily to toggle the automatic antenna  
tuner function ON/OFF.  
Functions vary depending on the menu set selected.  
An optional antenna tuner must be connected.  
During HF/50 MHz operation, push this switch for  
2 sec. to manually tune the antenna.  
An optional antenna tuner must be connected.  
During 144/430 MHz operation, push this switch  
momentarily to select the call channel (or the pre-  
vious channel/frequency when the call channel is  
already selected). (p. 39)  
!MENU SWITCH [MENU] (p. 68)  
Push this switch one or more times to select  
menus within a menu set (M, S or G), or push to  
advance through the quick set mode and initial  
set mode displays.  
Push and hold to jump between two different  
function menu sets.  
C1” is the 144 MHz call channel and “C2” is the 430  
MHz call channel.  
!RIT/SUB DIAL SWITCH [RIT/SUB] (p. 20)  
Push to toggle the RIT or SUB DIAL function ON  
and OFF—initial set mode is used to select the  
desired action*.  
TUNER/CALL  
Lights while the automatic  
tuning function is activated.  
Lights green when the SUB DIAL function is ON;  
lights red when the RIT function is ON.  
Use the [M-CH] control to vary the RIT frequency or  
SUB DIAL frequency (see above).  
@
FRONT PANEL LATCH (p. 10)  
Pull away from the transceiver (towards yourself  
when looking at the front of the transceiver) to  
detach the front panel from the main body of the  
transceiver.  
When the RIT function is ON, push for 2 sec. to  
add or subtract the shifted frequency to the oper-  
ating frequency.  
@PREAMP/ATTENUATOR SWITCH [P.AMP/ATT]  
(p. 21)  
RIT  
SUB  
Lights red while the RIT function is activated;  
green while the SUB DIAL function is activated.  
Push momentarily to turn the preamp ON or OFF.  
Push and hold to turn the 20 dB attenuator ON;  
push momentarily to turn the attenuator OFF.  
Lights green when the preamp is ON; lights red when  
the 20 dB attenuator is ON.  
*Even if RIT is selected in initial set mode, RIT cannot be  
selected when operating AM, FM or WFM modes.  
!SHIFT CONTROL [SHIFT] (outer control; p. 20)  
Shifts the center frequency of the receiver’s IF pass-  
band.  
P.AMP/ATT  
Lights green while the preamp is activated;  
lights red while the attenuator is activated.  
Rotate the control clockwise to shift the center frequen-  
cy higher, or rotate the control counterclockwise to shift  
the center frequency lower.  
When the graphic menu display (G2) is selected, the IF  
passband is graphically displayed and changes in accor-  
dance with the [SHIFT] control (see p. 20).  
2
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1
PANEL DESCRIPTION  
MEMORY CLEAR (p. 39)  
Clears the selected memory channel’s  
Function switches  
DM1 FUNCTIONS  
MCL  
F-2  
contents.  
}” appears.  
M1 SPL A/B A=B  
F-3  
DM3 FUNCTIONS  
MENU  
F-1  
F-2  
XFC  
M3 FIL NB MET  
MENU  
F-1  
F-2  
F-3  
SPLIT OPERATION (p. 29)  
Toggles the split function ON and OFF.  
ä”appears when the split function is ON.  
The function of [F-3] changes to XFC when the  
split function is ON.  
SPL  
F-1  
NARROW FILTER (p. 23)  
Toggles the narrow filter (or wide filter—  
push for 2 sec.) ON and OFF.  
ã”appears when the narrow filter is ON; “ç”  
appears when the wide filter is ON.  
An optional narrow filter and presetting in initial  
set mode (p. 51) is necessary to use the fol-  
lowing:  
FIL  
F-1  
VFO A/B SELECTION (p. 16)  
Toggles between VFO A and VFO B in  
A/B  
F-2  
VFO mode.  
Toggles between transmission VFO and  
reception VFO during split operation.  
Toggles between the transmit and  
receive frequencies (and modes) of  
memory channels when the split func-  
tion is turned ON.  
CW/RTTY narrow: FL-100, FL-101 or FL-232  
SSB narrow: FL-223  
SSB wide: FL-103  
NOISE BLANKER (p. 21)  
Turns the noise blanker ON and OFF.  
NB  
F-2  
VFO EQUALIZATION (p. 16)  
Equalizes the frequency and operating  
The noise blanker does not function in FM and  
WFM modes; the “AM Noise blanker” item in  
initial set mode must be set to ON for the noise  
blanker to work in AM mode (p. 53).  
A=B  
F-3  
mode of the two VFO’s.  
The rear (undisplayed) frequency and operat-  
ing mode are equalized to the front (displayed)  
VFO frequency and operating mode.  
METER SELECTION (p. 25)  
Selects the type of meter displayed (during  
TRANSMIT FREQUENCY CHECK (p. 29)  
Appears when the split function is turned  
MET  
F-3  
transmit) in the function display.  
Power, ALC or SWR metering can be select-  
ed.  
XFC  
F-3  
ON—monitors the transmit frequency  
when pushed and held.  
While pushed, the transmit frequency can be  
changed with the main dial.  
Only an S-meter is available for receive.  
DM4 FUNCTIONS  
DM2 FUNCTIONS  
DURING SSB/AM OPERATION:  
M4 VOX COM AGC  
F-3  
M2 MW MÜV V/M  
MENU  
MENU  
F-1  
F-2  
F-1  
F-2  
F-3  
(in memory mode)  
MCL  
DURING CW OPERATION:  
MEMORY WRITE (p. 40)  
M4 i/4 BRK AGC  
F-3  
Stores the displayed frequency and operat-  
ing mode into the displayed memory chan-  
nel.  
MENU  
F-1  
F-2  
MW  
F-1  
DURING RTTY OPERATION:  
MEMORY TRANSFER (p. 41)  
Transfers the frequency and operating  
M4 1/4  
MENU  
AGC  
F-3  
MÜV  
F-2  
mode in the selected memory channel to a  
VFO.  
F-1  
F-2  
VFO/MEMORY (p. 39)  
Toggles between VFO and memory  
DURING FM OPERATION:  
V/M  
F-3  
modes.  
M4 VOX TSQ TON  
F-2  
MENU  
F-1  
F-3  
3
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PANEL DESCRIPTION 1  
VOX FUNCTION (p. 26)  
Toggles the VOX function ON and OFF.  
MEMO PAD READ (p. 42)  
Calls up a memo pad.  
MPR  
F-3  
VOX  
F-1  
The [VOX GAIN] and [ANTI VOX] are available  
on the side panel.  
VOX delay can be set in quick set mode  
(p. 48).  
DS2 FUNCTIONS  
S2 SCN PRI V/M  
MENU  
SPEECH COMPRESSOR (p. 26)  
Toggles the speech compressor ON and  
F-1  
F-2  
F-3  
COM  
F-2  
OFF.  
(in memory mode)  
SEL  
The [COMP GAIN] control is available on the  
side panel.  
SCAN (p. 44)  
Starts and stops the scan function.  
SCN  
F-1  
AGC (p. 21)  
Changes the time constant of the AGC cir-  
AGC  
F-3  
cuit.  
PRIORITY WATCH (p. 44)  
Starts and stops priority watch.  
PRI  
F-2  
BREAK-IN (p. 33)  
Selects semi break-in, full break-in (QSK)  
SELECT SCAN (p. 44)  
Toggles the select setting ON and OFF for  
the selected memory channel.  
BRK  
F-2  
SEL  
F-2  
and break-in OFF  
BK” or “F-BK” appears when selecting semi  
break-in or full break-in, respectively.  
An external switch, such as a foot switch, is  
necessary to connect to the ACC socket (pin 3,  
pin 7 or RTTY SEND—see p. 35) to use no  
break-in operation.  
VFO/MEMORY (p. 44)  
Toggles between VFO and memory  
modes.  
V/M  
F-3  
DS3 FUNCTIONS  
1/4 FUNCTION (p. 36)  
Toggles the 1/4 function ON and OFF.  
1/4  
F-1  
1
When the 4 function is ON, a bar appears  
under the 14 indication and fine tuning can be  
used.  
S3  
MENU  
7 50 144  
F-2  
F-1  
F-3  
TONE SQUELCH (p. 31)  
Toggles the tone squelch function ON and  
QUICK BAND CHANGE FUNCTION (p. 19)  
This item provides access to the band stacking regis-  
ter. By default the 7, 50 and 144 MHz bands are dis-  
played. Push [F-1] to [F-3] for 2 sec. to select a new  
band if desired.  
TSQ  
F-2  
OFF (a tone squelch frequency must be  
selected in Quick Set mode).  
FM-TSQLappears when the function is ON.  
•A mode is memorized along with the frequency for each  
band.  
REPEATER TONE OPERATION (p. 30)  
Toggles the subaudible tone encoder for  
TON  
F-3  
repeater use ON and OFF.  
DS4 FUNCTIONS (may be optional for some ver.)  
FM-T” appears when the function is ON.  
Transmits a 1750 Hz tone burst when  
pushed and held during transmission.  
Tone frequencies or tone burst can be set in  
initial set mode (p. 49).  
S4 ANF NR NRL  
F-3  
MENU  
F-1  
F-2  
AUTOMATIC NOTCH FILTER (p. 24)  
This function automatically attenuates beat  
tones, tuning signals, etc., even if they are  
moving.  
ANF  
F-1  
DS1 FUNCTIONS  
S1 MW MPW MPR  
MENU  
F-1  
F-2  
F-3  
NOISE REDUCTION (p. 24)  
NR  
F-2  
This function reduces noise components  
and picks out desired signals which are  
buried in the noise.  
MEMORY WRITE (p. 40)  
MW  
F-1  
Stores the displayed frequency and operat-  
ing mode into the displayed memory chan-  
nel.  
NOISE REDUCTION DISPLAY (p. 24)  
This displays the noise reduction level  
when using the noise reduction function.  
NRL  
F-3  
MEMO PAD WRITE (p. 42)  
Stores the displayed frequency and operat-  
ing mode into a memo pad.  
MPW  
F-2  
4
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1
PANEL DESCRIPTION  
Rear and side panels  
t
y
e
r
u
i
! !  
ANT 1  
KEY  
MIC  
COMP BEEP  
GAIN /SIDE T  
w
DC 13.8V  
TUNER  
EXT SP  
q
GND  
ANT 2  
!
!
o
qGROUND TERMINAL [GND] (p. 9)  
Connect this terminal to a ground to prevent electri-  
cal shocks, TVI, BCI and other problems.  
()  
When connecting  
a straight key  
w
ANTENNA CONNECTORS [ANT 1], [ANT 2] (p. 11)  
Accept a 50 antenna with an PL-259 type plug.  
[ANT 1] is for connection to an HF/50 MHz antenna.  
[ANT 2] is for connection to 144 MHz antenna.  
(dot)  
(com)  
(dash)  
When connecting  
a paddle  
These connectors are switched above or below 60 MHz.  
e
DATA JACK [DATA] (p. 12)  
oDC POWER SOCKET [DC13.8V] (p. 13)  
Accepts 13.8 V DC through the supplied DC power  
cable.  
6-pin min DIN jack to connect a TNC, etc. for pack-  
et operation.  
r
ACCESSORY SOCKET [ACC] (p. 6)  
Enables connection to external equipment such as  
a TNC for data communications, a linear amplifier or  
an automatic antenna selector/tuner, etc.  
See page at right for socket information.  
Rear panel view  
t
RTTY JACK [RTTY] (p. 35)  
!EXTERNAL SPEAKER JACK [EXT SP] (p. 12)  
Accepts a 4–16 speaker.  
Connects an external terminal unit for RTTY (FSK)  
operation.  
The keying polarity and mark/shift frequencies can be  
!TUNER CONTROL SOCKET [TUNER] (p. 12)  
Accepts the control cable from an optional AH-3 HF  
AUTOMATIC ANTENNA TUNER.  
selected in quick set mode (p. 48).  
yCI-V REMOTE CONTROL JACK [REMOTE]  
(p. 45)  
!SPEECH COMPRESSION LEVEL CONTROL  
[COMP GAIN] (p. 26)  
Designed for use with a personal computer for  
remote operation of transceiver functions.  
Adjusts the compression level.  
This control is available only when the speech compres-  
sor is ON.  
uMICROPHONE CONNECTOR [MIC] (p. 11)  
Accepts the supplied microphone (connected in par-  
allel with the front panel’s [MIC] connector).  
See pgs. 1 and 2 for microphone notes.  
Recommended  
level  
See p. 8 for microphone connector information.  
Counterclockwise  
decreases  
Clockwise  
increases  
iELECTRONIC KEYER JACK [KEY] (p. 33)  
Accepts a paddle to activate the internal electronic  
keyer.  
Selection between the internal electronic keyer and  
straight key operation can be made in quick set mode. (p.  
49)  
COMP BEEP  
GAIN /SIDE T  
5
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PANEL DESCRIPTION 1  
!BEEP/SIDETONE CONTROL [BEEP/SIDETONE]  
Adjusts the beep tone and CW side tone audio lev-  
els.  
TECHNICAL INFORMATION  
ACC SOCKET  
ACC  
PIN # NAME  
DESCRIPTION  
SPECIFICATIONS  
COLOR  
brown  
red  
Output voltage  
Output current  
:8 V ±0.3 V  
:Less than 10 mA  
1
2
8 V  
Regulated 8 V output.  
GND  
Connects to ground.  
Input/output pin (HF/50 MHz).  
Ground level  
Input current  
:0.5 V to 0.8 V  
:Less than 20 mA  
Goes to ground when transmitting.  
When grounded, transmits (connected to 8V  
line thru 2.2 kresistance/144 MHz operation).  
3
HSEND  
orange  
(HF/50 MHz bands)  
4
5
BDT  
Data line for the optional AT-180.  
yellow  
green  
Band voltage output.  
(Varies with amateur band)  
BAND  
Output voltage  
Control voltage  
:0 to 8.0 V  
:4 to 0 V  
6
7
ALC  
ALC voltage input.  
blue  
Input impedance :More than 10 k  
13  
9
5
1
10 11 12  
Input/output pin (144 MHz).  
Goes to ground when transmitting.  
When grounded, transmits (connected to 8V  
Ground level  
Input current  
:0.5 V to 0.8 V  
:Less than 20 mA  
6
2
7
3
8
4
VSEND  
purple  
(144 MHz band)  
line thru 2.2 kresistance/HF•50 MHz operation)  
.
Rear panel  
view  
8
9
13.8 V 13.8 V output when power is ON.  
Output current  
:Max. 1 A  
gray  
TKEY  
FSKK  
Key line for the AT-180.  
white  
RTTY keying input.  
Connected in parallel to the [RTTY] jack.  
Ground level  
Input current  
:0.5 to 0.8 V  
:Less than 10 mA  
10  
black  
Input impedance :10 kΩ  
11  
12  
13  
MOD  
AF  
Modulator input.  
Input level  
rms  
:Approx. 100 mV  
pink  
light  
AF detector output.  
Fixed, regardless of [AF] position.  
Output impedance :4.7 kΩ  
Output level  
:100 to 350 mV rms blue  
Squelch output.  
Goes to ground when squelch opens.  
SQL open :Less than 0.3 V/5 mA  
SQL closed :More than 6.0 V/100 µA green  
light  
SQLS  
Color refers to the  
cable strands of the  
supplied cable.  
When connecting the ACC conversion cable (OPC-599)  
FSKK  
GND  
HSEND  
MOD  
AF  
2
8
5
4
SQLS  
13.8 V  
ALC  
3
1
6
7
13  
9
5
1
10 11 12  
ACC 1  
6
2
7
3
8
4
8 V  
GND  
HSEND  
BAND  
ALC  
VSEND  
13.8 V  
2
5
4
3
1
6
7
ACC 2  
6
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1
PANEL DESCRIPTION  
Function display  
q
w
ea r  
N
W
R
SPL  
LSB USBCW  
RTTY AM WFM TSQL  
eb  
DSP  
ANF  
!
t
NR  
y
i
!
!
NB VOX F-BK COM FAGC  
DUP  
BLANK  
u
o
S1  
3
5
7
9
20  
40  
60dB  
VFO A  
VFO B  
S
ALC  
SWR PO  
!
CH  
1
1.5  
2
3 5  
10 MEMO  
A/B  
A=B  
M1 SPL  
!
qNARROW/WIDE FILTER INDICATORS  
ã” appears when selecting AM narrow or FM  
narrow modes.  
!MEMORY CHANNEL NUMBER READOUT  
Shows the selected memory channel number.  
!DOT MATRIX INDICATORS  
When installing an optional narrow filter, narrow  
mode can be selected in CW, RTTY and SSB  
modes.  
These alphanumeric readouts show a variety of  
information such as current functions of the “F” keys  
[F1] to [F3], memory channel names, set mode  
items, etc. See p. 68 for an overview of these indi-  
cators.  
When the SSB wide filter is installed, “ç” appears  
during wide mode selection.  
w MODE INDICATORS  
Show the operating mode.  
!METER READOUTS  
Functions as an S-meter while receiving.  
Functions as a power, ALC or SWR meter while  
transmitting.  
ePROGRAMMABLE/1 MHz TUNING STEP  
INDICATORS  
a appears when the programmable tuning step  
is selected.  
b appears when the 1 MHz tuning step is  
selected.  
Note:The SWR meter does not function in the 144  
MHz band.  
!FUNCTION INDICATORS  
“NB” appears when the noise blanker is activat-  
ed.  
“VOX” appears when the VOX function is select-  
ed.  
“F-BK” appears when full break-in operation is  
selected and only “BK” appears when semi  
break-in operation is selected.  
“COM” appears when the speech compressor is  
activated.  
rSPLIT INDICATOR  
Shows that the split frequency function is activated.  
tFREQUENCY READOUT  
Shows the operating frequency.  
C” appears in place of the 1 Hz digit when the call chan-  
nel is selected.  
yDUPLEX INDICATORS  
“DUP+” appears during plus duplex operation.  
“DUP–” appears during minus duplex operation.  
“FAGC” appears when the fast AGC function is  
selected.  
uBLANK INDICATOR  
Shows that the displayed memory channel is not  
programmed.  
This indicator appears both in VFO and memory modes.  
!DSP INDICATORS  
Appear when the optional DSP unit is installed and  
activated.  
iVFO/MEMORY INDICATORS  
VFO A or B appears when VFO mode is selected;  
MEMO appears when memory mode is selected.  
oSELECT INDICATOR  
Shows that the displayed memory channel is desig-  
nated as a select memory channel.  
7
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PANEL DESCRIPTION 1  
Microphone (HM-103)  
LOCK  
DN  
UP  
OFF  
ON  
UP/DOWN SWITCHES [UP]/[DN]  
Change the operating frequency.  
LOCK SWITCH [LOCK]  
Locks the [UP]/[DN] switches.  
Push and hold to change the frequency continuously.  
Tuning step is 50 Hz when no TS indicator appears.  
PTT SWITCH [PTT]  
Push and hold to transmit; release to receive.  
TECHNICAL INFORMATION  
MICROPHONE CONNECTOR  
PIN NO.  
FUNCTION  
+8 V DC output  
DESCRIPTION  
Max. 10 mA  
1
Frequency up  
Frequency down  
Squelch open  
Squelch closed  
Ground  
2
8
Ground through 470  
“LOW” level  
“HIGH” level  
Caution:DO NOT short pin 1 to ground as  
this can damage the internal 8 V regulator.  
Rear panel view  
12345678  
HM-103 SCHEMATIC DIAGRAM  
2k  
MICROPHONE  
MICROPHONE PLUG  
MICROPHONE  
CABLE  
+
4700p  
10µ  
0.33µ  
MIC  
ELEMENT  
+
4700p  
12345678  
2.2k  
DOWN  
UP  
PTT  
470  
RECEIVE  
TRANSMIT  
8
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2
INSTALLATION AND CONNECTIONS  
Unpacking  
After unpacking, immediately report any damage to  
the delivering carrier or dealer. Keep the shipping car-  
tons.  
For a description and a diagram of accessory equip-  
ment included with the IC-706MKIIG, see UNPACK-  
ING on p. ii of this manual.  
Grounding  
To prevent electrical shock, television interference  
(TVI), broadcast interference (BCI) and other prob-  
lems, ground the transceiver through the GROUND  
terminal on the rear panel.  
RWARNING:NEVER connect the [GND] ter-  
minal to a gas or electric pipe, since the connection  
could cause an explosion or electric shock.  
For best results, connect a heavy gauge wire or strap  
to a long earth-sunk copper rod. Make the distance  
between the GROUND terminal and ground as short  
as possible.  
Antenna  
Select antenna(s), such as a well-matched 50 Ω  
antenna, and feedline. The transmission line should  
be a coaxial cable. 1.5 : 1 or better of Voltage  
Standing Wave Ratio (VSWR) is recommended for  
your required band. Of course, the transmission line  
should be a coaxial cable.  
ANTENNA SWR  
Each antenna is tuned for a specified frequency  
range and SWR may be increased out-of-range.  
When the SWR is higher than approx. 2.0:1, the  
transceiver’s power drops to protect the final transis-  
tors. In this case, an optional antenna tuner is useful  
to match the transceiver and antenna. Low SWR  
allows full power for transmitting even when using  
the antenna tuner. The IC-706MKIIG has an SWR  
meter to monitor the antenna SWR continuously.  
CAUTION: Protect your transceiver from lightning  
using a lightning arrestor.  
PL-259 CONNECTOR INSTALLATION EXAMPLE  
30 mm  
solder solder  
Slide the coupling ring  
Slide the connector  
down. Strip the cable  
jacket and soft solder.  
body on and solder it.  
Coupling ring  
10 mm (soft solder)  
10 mm  
Soft  
Strip the cable as  
shown at left. Soft  
solder the center con-  
ductor.  
Screw the coupling ring  
solder  
onto  
the  
connector  
body.  
1–2 mm  
(10 mm 38 in)  
9
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INSTALLATION AND CONNECTIONS 2  
Installation  
DSingle body mounting  
DStand  
To raise the stand:  
MB-62  
(optional)  
With the transceiver upside down, pull the stand  
towards the rear panel and then upwards, as illus-  
trated below.  
Supplied with  
the MB-62*  
then up  
Pull back  
*CAUTION: Non-supplied screws (longer than 8 mm)  
may damage the internal units.  
DFront panel separation  
While pulling the panel release button towards you,  
slide the front panel to the right (fig. 1).  
Attach the optional OPC-581 to the main body and  
tighten the supplied screw as in fig. 2.  
fig. 1  
Attach the other end of the OPC-581 to the  
detached front panel as in fig. 3.  
fig. 3  
fig. 2  
DFront panel mounting  
Attach the MB-63 to a flat surface using the two  
supplied screws (fig. 1).  
Fix the detached front panel to the MB-63 as illus-  
trated in fig. 2.  
fig. 1  
Be careful of the orientation of the MB-63, other-  
wise, the front panel may become attached in the  
opposite direction.  
fig. 2  
10  
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2
INSTALLATION AND CONNECTIONS  
Required connections  
MODE  
AF  
RF/SQL  
HF/VHF/UHF TRANSCEIVER  
i706MK™G  
Y
BAND  
TS  
POWER  
P.AMP/ATT  
RX  
TX  
RIT/  
SUB  
TUNER/CALL  
PHONES  
DISPLAY  
M-CH  
SHIFT  
LOCK  
BAND  
MENU  
F-1  
F-2  
F-3  
Z
MICROPHONE (p. 8)  
HF/50 MHz ANTENNA  
2 m ANTENNA  
RTTY TERMINAL  
HM-103  
UNIT (p. 35)  
ANT 1  
CW KEY (p. 33)  
KEY  
MIC  
DC 13.8V  
TUNER  
EXT SP  
GND  
ANT 2  
PS-85  
GROUND (p. 9)  
Use the heaviest gauge wire or  
strap available and make the  
connection as short as possible.  
Grounding prevents electrical  
shocks,  
TVI  
and  
other  
problems.  
See p. 13 for details.  
11  
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INSTALLATION AND CONNECTIONS 2  
Advanced connections  
MODE  
AF  
RF/SQL  
HF/VHF/UHF TRANSCEIVER  
i706MK™G  
Y
BAND  
TS  
POWER  
P.AMP/ATT  
RX  
TX  
RIT/  
SUB  
TUNER/CALL  
PHONES  
DISPLAY  
HEADPHONES  
M-CH  
SHIFT  
LOCK  
BAND  
MENU  
F-1  
F-2  
F-3  
Z
OPC-589 (p. 65)  
or  
REMOTE (p. 45)  
Used for computer control and transceive.  
SPEAKER  
Selectable with the  
[PHONE/SPEAKER] switch  
on the back of the front panel.  
ACC SOCKET (p. 6)  
DATA JACK (p. 37)  
6-pin mini DIN jack to connect to a  
TNC, etc. for packet operation.  
DESKTOP (p. 64)  
COAX ANTENNA  
SWITCH  
MICROPHONE  
ANT 1  
When using a 50 MHz  
antenna separately  
since the AH-3 can  
only be used for the  
HF bands.  
KEY  
MIC  
DC 13.8V  
TUNER  
EXT SP  
GND  
ANT 2  
(p. 14)  
AH-4  
EXTERNAL  
AH-2b  
SPEAKER (p. 65)  
SP-21  
12  
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2
INSTALLATION AND CONNECTIONS  
Power supply connections  
Use the optional PS-85 DC POWER SUPPLY when oper-  
ating the IC-706MKIIG with AC power. Refer to the  
diagram below for connection.  
CAUTION: Before connecting the DC power  
cable, check the following important items. Make  
sure:  
The [POWER] switch is OFF.  
Output voltage of the power source is 12–15 V  
when you use a non-Icom power supply.  
DC power cable polarity is correct.  
Red  
:
positive (+) terminal  
Black : negative (–) terminal  
CONNECTING THE PS-85 DC POWER SUPPLY  
PS-85  
Connect to an AC outlet  
using the supplied AC cable.  
Note:When using the PS-85, the IC-  
DC power  
socket  
706MKIIG Europe version complies with  
EMC directives even if the OPC-639 is  
not used.  
DC power cable  
CONNECTING A NON-ICOM  
CONNECTING A NON-ICOM  
DC POWER SUPPLY (For Europe versions)  
DC POWER SUPPLY  
Transceiver  
Transceiver  
DC power  
socket  
DC power  
socket  
[GND]  
20 A  
13.8 V  
Black  
To non-Icom  
power supply  
Red  
Supplied  
DC power cable  
30 A fuses  
To AC outlet  
OPC-639  
CONNECTING A VEHICLE BATTERY  
Note: Use terminals for  
the cable connections.  
NEVER connect to  
a 24 V battery.  
Crimp  
red  
black  
Grommet  
Solder  
12 V  
battery  
Supplied  
DC power cable  
13  
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INSTALLATION AND CONNECTIONS 2  
External antenna tuners and linear amplifier  
CONNECTING THE AH-4  
The AH-4 can be used for the HF bands and 50  
MHz band only.  
Coaxial cable  
(from the AH-4)  
ANT 1  
AH-4  
To the AH-2b or  
an antenna element  
Transceiver  
CONNECTING THE AT-180  
ACC cable supplied with the AT-180  
HF  
to 6 m  
antenna  
Coaxial cable supplied  
with the AT-180  
one of two  
connectors  
[ANT 1]  
[ACC]  
AT-180 [ACC]  
IC-706  
Ground  
[TRANSCEIVER]  
Note:  
Do not connect [ANT 2] to the  
AT-180. When using an HF to 2 m  
wide antenna, use a duplexer  
between the AT-180 and antenna  
since 2 m signals do not pass  
through the AT-180.  
HF to 2 m  
antenna  
Turn the IC-706MKIIG’s power  
OFF when connecting the AT-  
180, otherwise, the CPU may  
malfunction and the AT-180  
may not function properly.  
The OPC-742 is required when  
using both the AT-180 and a 2  
m linear amplifier.  
Transceiver  
AT-180  
Duplexer  
[ANT 1]  
[ANT 2]  
CONNECTING THE IC-PW1  
To an  
antenna  
Mini-plug cable  
OPC-599 conversion cable  
ACC cable  
7-pin side  
ANT  
ACC-1  
REMOTE  
ACC  
REMOTE  
INPUT-1  
ANT1  
Coaxial cable  
Transceiver  
GND  
GND  
IC-PW1  
AC outlet (220–240 V)  
14  
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3
FREQUENCY SETTING  
When first applying power (CPU resetting)  
Before first applying power, make sure all connections  
[POWER]  
required for your system are complete by referring to  
section 2. Then, reset the transceiver using the follow-  
ing procedure.  
[Y]  
[Z]  
Note:Resetting clears all programmed contents in  
memory channels and returns all initial set mode  
and quick set mode contents to their default values.  
USB  
The transceiver displays  
its initial frequency and  
mode.  
Make sure the transceiver power is OFF.  
While pushing [Y] and [Z], push [POWER] to turn  
power ON.  
BLANK  
VFO A  
S1  
3
5
7
9
20  
40  
60dB  
10  
CH  
PO  
5
The internal CPU is reset.  
The transceiver displays as shown at right when reset-  
ting is complete.  
M1 SPL  
A=B  
A/B  
DM1display selection  
If you can’t figure out how to return to the M1 display:  
While pushing [MENU], turn power ON.  
Initial settings  
CCW:counterclockwise  
After resetting the transceiver, set controls and switch-  
es as shown in the diagram below.  
[AF]: Max. CCW  
[POWER]: OFF  
[P.AMP/ATT]: OFF  
(indicator lights out)  
[RF/SQL]: Max. CCW  
[TUNER/CALL]: OFF  
(indicator lights out)  
[RIT/SUB]: OFF  
(indicator lights out)  
[LOCK]: OFF  
(indicator light out)  
[SHIFT]: Center  
Turn power ON, then check the display. If any of the  
following indicators appear, turn them OFF as follows:  
Tuning step indicators,  
Push [TS].  
Z, (SSB, CW or RTTY):  
MHz tuning step indicator,  
Push [TS].  
Z, (FM, WFM or AM):  
•1 Hz frequency readout (SSB, CW or RTTY):  
Push and hold [TS].  
Memory mode indicator, MEMO:  
Use [(F-3)V/M] in the M2 display (p. 68).  
Split indicator, ä:  
Use [(F-1)SPL] in the M1 display (p. 68).  
15  
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FREQUENCY SETTING 3  
frequency and operating mode for operation.  
VFO description  
VFO is an abbreviation of Variable Frequency  
Oscillator, and traditionally refers to an oscillator. The  
IC-706MKIIG’s VFO can store a frequency and an  
operating mode.  
MODE  
SWITCH  
Select  
VFO  
USB  
You can call up a desired frequency to a VFO with the  
memo pad-read switch (p. 42) or with the memory  
transfer switch (p. 42). You can also change the fre-  
quency with the main dial and select an operating  
mode with the [MODE] switch or call up previously  
accessed frequency and modes with the band stack-  
ing register (p. 19).  
Change  
Transfer  
VFO A  
CH  
DIAL  
M1 SPL  
A=B  
A/B  
Transfer  
Transfer  
MEMORY  
CHANNEL  
BAND  
MEMO PAD  
28.025 MHz  
21.295 MHz  
7.001 MHz  
The IC-706MKIIG has two VFOs, specially suited for  
split frequency operation. The VFOs are called VFO A  
and VFO B. You can use the desired VFO to call up a  
The differences between VFO and memory mode  
VFO MODE  
MEMORY MODE (pgs. 39–42)  
Each VFO shows a frequency and operating mode. If  
the frequency or operating mode is changed, the  
VFO automatically memorizes the new frequency or  
operating mode.  
Each memory channel shows a frequency and oper-  
ating mode like a VFO. Even if the frequency or mode  
is changed, the memory channel does not memorize  
the new frequency or memory mode.  
When the VFO is selected from another VFO or  
memory mode, the last-used frequency and operat-  
ing mode for that VFO appear.  
When a memory channel is selected from another  
memory channel or VFO mode, the memorized fre-  
quency and operating mode appear.  
[EXAMPLE]  
[EXAMPLE]  
VFO is selected.  
Memory channel 1 is  
USB  
USB  
selected.  
VFO A  
MEMO  
CH  
CH  
The frequency is changed.  
The frequency is changed.  
USB  
USB  
VFO A  
MEMO  
CH  
CH  
Memory mode is selected.  
Another memory channel  
is selected.  
USB  
USB  
MEMO  
MEMO  
CH  
CH  
VFO is selected again.  
Memory channel 1 is  
selected again.  
USB  
USB  
VFO A  
MEMO  
CH  
CH  
Changed frequency (14.123 MHz) appears.  
Changed frequency (14.123 MHz) does not appear and  
memorised frequency (14.100 MHz) appears instead.  
16  
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3
FREQUENCY SETTING  
Frequency setting  
Band selection  
FM  
LSB  
All HF ham bands, the 50 MHz band, the 144 MHz  
band and a general coverage receiver band are  
included in the IC-706MKIIG.  
Z
USB  
Push [(Y)BAND]/[(Z)BAND] to select the desired  
band.  
Pushing [(Y)BAND]/[(Z)BAND] continuously scrolls  
through the available bands.  
Z
Note:The band stacking register can also be used to  
select bands. Refer to p. 19.  
USB  
USB  
Programmable tuning steps  
Programmable tuning steps are available to suit your  
operating requirements.  
These tuning steps are:  
Independently selectable for each mode  
Selectable from 0.01 (FM/WFM/AM only), 0.1, 1, 5,  
9, 10, 12.5, 15, 20 and 100 kHz  
Push [TS] one or more times until the programma-  
USB  
ble tuning step indicator, “  
Z,appears above the 1  
Programmable tuning  
step indicator  
kHz digit.  
Rotating the main dial changes the frequency according  
to the set tuning step.  
VFO A  
S1  
3
5
7
9
20  
40  
60dB  
10  
CH  
PO  
5
Push [TS] for 2 sec. while the programmable tun-  
ing step indicator appears to enter the tuning step  
selection mode.  
M1 SPL A/BA=B  
10 kHz tuning step is  
selected for USB  
operation.  
Rotate DIAL appears.  
USB  
Rotate the main dial to set the desired tuning step.  
Change the mode and select tuning steps for other  
modes, if desired.  
Push [TS] to exit the tuning step selection mode.  
Rotate the main dial to change the frequency  
according to the set tuning step.  
RotateDIAL  
•1 Hz and 10 Hz tuning steps  
When neither the quick tuning step or programmable  
tuning step, “Z,appear, rotating the main dial  
changes the frequency in increments of 1 or 10 Hz.  
These tuning steps are only available in SSB, CW  
and RTTY modes.  
Rotating the main dial  
changes the frequency  
in 10 Hz steps.  
USB  
Select SSB, CW or RTTY mode if necessary.  
Push [TS] for 2 sec. to toggle between the 1 and 10  
Hz step settings.  
When the 1 Hz step is selected, the 1 Hz digit appears  
in the frequency indication; when the 10 Hz step is  
selected, the 1 Hz digit disappears from the frequency  
indication.  
VFO A  
Push  
TS  
for 2 sec.  
Rotating the main dial  
changes the frequency  
in 1 Hz steps.  
USB  
VFO A  
17  
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FREQUENCY SETTING 3  
•1 MHz quick tuning step  
The quick tuning step function allows you to change  
the frequency in 1 MHz steps when rotating the main  
dial. This function is only available in FM, WFM and  
AM modes.  
Select FM, WFM or AM mode if necessary.  
Push [TS] momentarily to toggle between the 1  
MHz tuning step and the programmable tuning  
step.  
Quick tuning step  
indicator  
FM  
•“  
Z” appears above the 1 MHz indicator when the 1  
Rotating the main dial  
changes the frequen-  
cy in 1 MHz steps.  
MHz tuning step is selected.  
When the 1 MHz tuning step is selected, slow rotation  
of the main dial changes the frequency in 1 MHz steps  
and fast rotation of the main dial changes the frequen-  
cy in 5 MHz steps.  
FM  
[TS] SWITCH FLOW CHART  
SSB/CW/RTTY modes  
Any mode  
FM/WFM/AM modes  
Programmable step tuning  
(100 Hz –100 kHz)  
10 Hz tuning  
1 MHz tuning  
USB  
USB  
FM  
TS  
TS  
2 sec.  
2 sec.  
TS  
momentarily  
momentarily  
2 sec.  
momentarily  
USB  
USB  
1 Hz tuning  
Rotate DIAL  
Selectable for each mode.  
Sub dial function  
The sub dial function allows you to change the oper-  
ating frequency using the [M-CH] control. This gives  
you more control in tuning since the [M-CH] knob is  
detented—each click changes the frequency accord-  
ing to the set tuning step. This function is always  
available in FM, WFM and AM modes. However, in  
SSB, CW and RTTY modes, the set mode item “Sub  
dial function,” must be set to “FrEq.”  
Push [RIT/SUB] to turn the sub dial function ON.  
The [SUB] indicator lights green; if it lights red, the RIT  
function is activated—sub dial function must be set in  
initial set mode in this case.  
[SUB] switch  
[M-CH] control  
Rotate [M-CH] to change the operating frequency  
according to the set tuning steps.  
Push [RIT/SUB] again to turn the function OFF.  
The [SUB] indicator turns off.  
Indicator lights green  
while the sub dial function  
is activated.  
RIT/  
SUB  
18  
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3
FREQUENCY SETTING  
Quick band change function  
The quick band change function automatically stores  
the last frequency and mode used for each band in a  
band stacking register. This is convenient for contest  
operation, etc. The tables below show the quick band  
change default settings for each band.  
USB  
Display shows the  
default bands for the  
quick band change  
function.  
Select S3.  
Push [DISPLAY] when M or G is displayed.  
Push [MENU] twice to select S3.  
BLANK  
VFO A  
S1  
3
5
7
9
20  
40  
60dB  
10  
CH  
PO  
5
Push [F-1]–[F-3] to select a band stacking register.  
The default settings for [F-1]–[F-3] are 7, 144 and 430  
MHz bands, respectively.  
To change the settings for [F-1]–[F-3] from their  
defaults, push [F-1]–[F-3] for 1 sec. one or more  
times to until the desired band appears in the dis-  
play above the corresponding switch.  
The last-used frequency and mode for the selected  
band are displayed.  
S3 7  
430  
144  
USB  
Display shows [F-2]  
has been changed from  
its default of the 50 MHz  
band to the general  
receiver band.  
BLANK  
VFO A  
S1  
3
5
7
9
20  
40  
60dB  
10  
CH  
PO  
5
S3 7  
144  
GEN  
BAND  
1.9 MHz  
3.5 MHz  
7 MHz  
FREQUENCY  
1.91000 MHz  
3.56000 MHz  
7.06000 MHz  
10.13000 MHz  
14.10000 MHz  
15.10000 MHz  
MODE  
CW  
BAND  
18 MHz  
FREQUENCY  
18.15000 MHz  
MODE  
USB  
USB  
USB  
USB  
USB  
FM  
LSB  
LSB  
CW  
21 MHz  
24 MHz  
28 MHz  
50 MHz  
144 MHz  
430 MHz  
21.30000 MHz  
24.95000 MHz  
28.60000 MHz  
50.10000 MHz  
145.00000 MHz  
433.00000 MHz  
10 MHz  
14 MHz  
General*  
USB  
USB  
FM  
*General refers to the general coverage receiver (GEN in  
the display) and the range varies according to version.  
Mode selection  
The following modes are available in the IC-  
706MKIIG:  
SSB (LSB/USB), CW, CW-å (CW reverse), FM,  
WFM (receive only), AM, RTTY and åRTTY (RTTY  
reverse).  
OPERATING MODE SELECTION  
Push  
USB  
CW  
LSB  
MODE  
To select the desired mode of operation push  
[MODE] one or more times, then push [MODE] for 2  
sec., if necessary. See the diagram at right for the  
order of selection.  
momentarily  
CWå  
åRTTY  
Push  
RTTY  
MODE  
for 2 sec.  
The selected mode is indicated in the function display.  
Note:If a desired mode cannot be selected, it may be  
FM  
WFM  
AM  
hidden using Initial Set mode (p. 50).  
19  
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RECEIVE AND TRANSMIT  
4
Functions for receive  
DIF shift function  
The IF shift function electronically changes the pass-  
band frequency of the IF (intermediate frequency)  
and cuts out higher or lower frequency components  
of the IF to reject interference. The function shifts the  
IF frequency up to ±1.2 kHz in 15 Hz steps in  
SSB/CW/RTTY modes and up to ±250 Hz in 3 Hz  
steps in CW-ã/RTTY-ã modes. The IF shift is not  
available in FM and AM modes.  
M-CH SHIFT  
M-CH SHIFT M-CH SHIFT  
Shifts low  
Center  
Shifts high  
Adjust the [SHIFT] control for a minimum interfer-  
ence signal level.  
The audio tone may be changed while the IF shift is in  
use.  
Set the shift control to its center position when  
there is no interference.  
USB  
Graphic display  
The IF shift is displayed graphically (for about 1 sec.)  
VFO A  
60dB  
S1  
3
5
7
9
20  
40  
each time the shift control is rotated.  
CH  
DRIT function  
The RIT (Receive Incremental Tuning) function com-  
pensates for off-frequencies of communicating sta-  
tions. The function shifts the receive frequency up to  
±9.99 kHz in 10 Hz steps without moving the transmit  
frequency. The [SUB/RIT] switch in Initial Set Mode  
must be set to RIT mode in advance (p. 51).  
Note:The RIT function is not available in FM, WFM  
or AM modes regardless of the Initial Set mode set-  
ting (p. 51).  
[RIT] switch  
Push [RIT].  
The [RIT] indicator lights red.  
[M-CH] control  
Rotate the [M-CH] control to cancel the off-fre-  
quencies.  
The transmit frequency is not shifted.  
To cancel the RIT function, push [RIT] again.  
The [RIT] switch indicator goes out.  
Indicator lights red while  
RIT function is activated.  
USB  
Calculate function  
The shift frequency of the RIT function can be  
added/subtracted to the displayed frequency.  
Push for  
2 sec.  
RIT/  
SUB  
USB  
While the RIT indicator is lit, push and hold [RIT] for  
2 sec.  
20  
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4
RECEIVE AND TRANSMIT  
DNoise blanker  
The noise blanker reduces pulse-type noise such as  
that generated by automobile ignition systems. This  
function is not effective for FM modes or for non pulse-  
type noise. If you don’t want to use the noise blanker  
for AM communications, the “AM noise blanker” item  
in Initial Set mode must be turned OFF (ON is the  
default setting—p. 53).  
Push [(F-2)NB] to toggle the noise blanker ON and  
OFF.  
NB” appears when the noise blanker is turned ON.  
USB  
NB  
Appears when the  
noise blanker is  
turned ON.  
VFO A  
S1  
3
5
7
9
20  
40  
60dB  
10  
Select M3.  
Push [DISPLAY] 1 or 2 times when Sor Gis displayed.  
Push [MENU] one or more times to select M3.  
PO  
5
CH  
NAR  
MET  
M3  
NB  
DAGC time constant  
The AGC (Automatic Gain Control) controls receiver  
gain to produce a constant audio output level even  
when the received signal strength is varied by fading,  
etc. Use AGC slow for normal phone operation; AGC  
fast for receiving data and searching for signals. AGC  
time constant cannot be changed in FM mode.  
Select M4.  
USB  
Push [DISPLAY] 1 or 2 times when Sor Gis displayed.  
Push [MENU] one or more times to select M4.  
Push [(F-3)AGC] to toggle the AGC time constant  
between fast and slow.  
FAGC  
Appears when  
AGC fast is  
selected.  
VFO A  
S1  
3
5
7
9
20  
40  
60dB  
CH  
PO  
5
10  
FAGC” appears when the fast time constant is selected.  
VOX  
AGC  
M4  
COM  
DPreamp and attenuator  
The preamp amplifies received signals in the front  
end circuit to improve the S/N ratio and sensitivity.  
Turn this function ON when receiving weak signals.  
Push [P.AMP/ATT] momentarily to turn the preamp ON  
and OFF; push and hold to turn the attenuator ON.  
Lights green when the preamp is ON; lights red when  
the 20 dB attenuator is ON.  
The attenuator prevents desired signals from distort-  
ing when very strong signals are near the desired fre-  
quency or when very strong electric fields, such as  
from broadcasting stations, are near your location.  
Only one of these functions can be activated at a time.  
P.AMP/ATT  
Lights green while the preamp is activated;  
lights red while the attenuator is activated.  
INITIAL SET MODE  
DPeak meter hold  
The peak meter hold function freezes the highest dis-  
played bar segment in any meter function for about  
0.5 sec. so that you can more easily read the meter.  
This function can be turned ON and OFF in initial set  
mode (see p. 51).  
[EXAMPLE]:  
S1  
3
5
7
9
20  
20  
40  
40  
60dB  
60dB  
Initial reception of a  
signal results in an S-  
meter reading of 40  
dB.  
S1  
3
5
7
9
The highest indicated  
bar remains displayed  
for about 0.5 sec.  
even when the signal  
strength decreases.  
21  
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RECEIVE AND TRANSMIT 4  
DRF gain and squelch  
The IC-706MKIIG uses the same control, [RF/SQL],  
to adjust one of either the RF gain or the squelch.  
[RF/SQL] adjusts either the RF gain or the squelch  
depending on the operating mode selected and the  
condition of the RF gain item in initial set mode (p.  
51; also see the table at right).  
[RF/SQL] control priority  
Initial set mode  
setting  
USB, LSB,  
CW, RTTY  
AM, FM, WFM  
SQL  
SQL*1  
SQL  
AUTO  
RF GAIN  
RF/SQL  
SQL  
The RF (Radio Frequency) gain is used to adjust the  
receiver gain.  
This control should be set to the 11 o’clock position for  
RF SQL*2  
RF/SQL  
*1Default; *2Default for USA version.  
normal use.  
Note:The recommended  
position for RF gain is the  
11 o’clock position since  
this sets RF gain to the  
max.  
When set to AUTO, SQL is  
active in FM/WFM/AM; RF  
is active in SSB/CW/RTTY.  
Max. RF gain position  
AF RF/SQL  
Shallow rotation moves the S-meter to the right indicating  
the signal strength which can be received.  
The SQUELCH removes noise output from the  
speaker (closed condition) when no signal is  
received. The squelch is particularly effective for FM.  
It is also available for the other modes.  
RF gain  
Same effect as at  
decreases the center position  
When operating in FM, first rotate the control fully coun-  
terclockwise. Then, rotate the control clockwise to the  
point where the noise just disappears. This is the best  
position. The squelch does not open for weak signals  
when it is set too deep.  
S-meter squelch  
Noise squelch  
threshold point  
threshold point  
AF  
RF/SQL  
Squelch  
opens  
Deep  
•A segment appears in the S-meter to indicate the S-meter  
squelch level.  
DSimple band scope  
Note: Use the attenuator or turn OFF the preamp when  
using the band scope on a band containing a lot of noise.  
This function allows you to visually “sweep” an area  
surrounding the set frequency for other signals.  
Detected signals are indicated graphically in the dot  
matrix section of the display.  
Set a mode and frequency.  
Select G1.  
SWP  
SWP  
1k  
2k  
2k  
Push [DISPLAY] 1 or 2 times if M or S appears.  
Push [MENU] one or more times to select G1.  
Push [F-1] one or more times to select the desired  
steps.  
Select sweep width  
([F-1])  
Each dot corresponds to a step for the indicated fre-  
quency.  
0.5, 1, 2, 5, 10, 20 and 100 kHz can be set for the scope  
step.  
Start sweep  
([F-3])  
SWP  
___  
Push [F-3] to start the sweep.  
___” (below SWP) flashes while sweeping.  
The receive audio is muted while sweeping.  
Rotate the main dial if you want to monitor the dis-  
played signals.  
Sweep is finished  
([F-3] again)  
SWP  
sweep marker  
2k  
The sweep marker indicates the location of the dis-  
played frequency in the sweep readout.  
If the displayed frequency is outside of the sweep read-  
out (determined by the sweep width), the sweep mark-  
er flashes.  
Push [F-2] to return the frequency to the start of a  
sweep.  
Move sweep marker  
(main dial)  
SWP  
SWP  
2k  
2k  
Returns to previous  
frequency ([F-2])  
The sweep marker moves back to the center position.  
22  
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4
RECEIVE AND TRANSMIT  
DOptional filter selection  
Two optional filters can be installed in the IC-  
706MKIIG.  
FILTER ON/OFF:  
Select M3.  
Push [DISPLAY] 1 or 2 times if G or S appears.  
Push [MENU] one or more times to select M3.  
Push [(F-1)FIL] momentarily to select the narrow  
filter; for 2 sec. to select the wide filter.  
ã appears when the narrow filter is selected; ç  
appears when the wide filter is selected.  
Narrow filters help reject interference from adjacent  
signals and obtain good selectivity.  
Wide filters provide improved audio for SSB opera-  
tion when no interfering signals are present.  
Consult the table below to select a filter most suitable  
for your operating needs.  
Note:When selecting the narrow filter, the graphic  
passband is narrowed (see diagram below).  
Narrow filters for AM/FM modes are standard.  
FILTER PRESETTING:  
After you install a filter (see p. 60 for installation), you  
must specify the installed filter in initial set mode  
(item 19 “OPT. FIL 1” or item 20 “OPT. FIL 2”; see  
p. 51).  
Normal  
operation  
narrow is  
selected  
Filter variations  
Name  
Mode  
Band width  
250 Hz/–6 dB  
350 Hz/–6 dB  
500 Hz/–6 dB  
FL-101*  
FL-232*  
FL-100*  
CW, RTTY  
CW, RTTY  
CW, RTTY  
FL-223* SSB, CW, RTTY 1.9 kHz/–6 dB  
FL-272 SSB, CW, RTTY 2.4 kHz/–6 dB  
FL-103* SSB, CW, RTTY 2.8 kHz/–6 dB  
FL-94  
AM, FM  
8 kHz/–6 dB  
*Optional filter.  
Optional filter installation and selection tables  
SSB  
CW, RTTY  
No  
No  
FIL 1  
FIL 1  
FL-100 FL-101 FL-103 FL-223 FL-232  
FL-100 FL-101 FL-103 FL-223 FL-232  
optional  
filter  
optional  
filter  
FIL 2  
No  
optional  
filter  
FIL 2  
No  
optional  
filter  
W:–––  
W:–––  
W:–––  
W:FL-103 W:––  
W:–––  
W:–––  
W:–––  
W:–––  
W:FL-103 W:––  
W:–––  
M:FL-272 M:FL-272 M:FL-272 M:FL-272 M:FL-272 M:FL-272  
N:–––  
W:–––  
M:FL-272 M:FL-272 M:FL-272 M:FL-272 M:FL-272 M:FL-272  
N:–––  
W:–––  
N:–––  
N:–––  
N:–––  
N:FL-223 N:–––  
N:FL-100 N:FL-101 N:–––  
N:FL-223 N:FL-232  
W:–––  
W:–––  
W:FL-103 W:––  
W:–––  
W:––– W:FL-272 W:FL-103 W:FL-272 W:FL-272  
M:FL-272 M:FL-272 M:FL-272 M:FL-272 M:FL-272 M:FL-272  
M:FL-272 M:FL-272 M:FL-100 M:FL-272 M:FL-223 M:FL-100  
N:FL-100 N:FL-100 N:FL-101 N:FL-100 N:FL-100 N:FL-232  
FL-100  
FL-101  
FL-103  
FL-223  
FL-232  
FL-100  
FL-101  
FL-103  
FL-223  
FL-232  
N:–––  
N:–––  
N:–––  
N:–––  
N:FL-223 N:–––  
W:–––  
W:–––  
W:–––  
W:FL-103 W:––  
W:–––  
W:–––  
W:FL-272 W:–––  
W:FL-103 W:FL-272 W:FL-272  
M:FL-272 M:FL-272 M:FL-272 M:FL-272 M:FL-272 M:FL-272  
N:––– N:––– N:––– N:––– N:FL-223 N:–––  
W:FL-103 W:FL-103 W:FL-103 W:FL-103 W:FL-103 W:FL-103  
M:FL-272 M:FL-272 M:FL-272 M:FL-272 M:FL-272 M:FL-272  
M:FL-272 M:FL-100 M:FL-272 M:FL-272 M:FL-223 M:FL-232  
N:FL-101 N:FL-101 N:FL-101 N:FL-101 N:FL-101 N:FL-101  
W:FL-103 W:FL-103 W:FL-103 W:FL-103 W:FL-103 W:FL-103  
M:FL-272 M:FL-272 M:FL-272 M:FL-272 M:FL-272 M:FL-272  
N:–––  
N:–––  
N:–––  
N:–––  
N:FL-223 N:–––  
N:–––  
N:FL-100 N:FL-101 N:–––  
N:FL-223 N:FL-223  
W:–––  
W:–––  
W:–––  
W:FL-103 W:––  
W:–––  
W:–––  
W:FL-272 W:FL-272 W:FL-103 W:––  
W:FL-272  
M:FL-272 M:FL-272 M:FL-272 M:FL-272 M:FL-272 M:FL-272  
N:FL-223 N:FL-223 N:FL-223 N:FL-223 N:FL-223 N:FL-223  
M:FL-272 M:FL-223 M:FL-223 M:FL-272 M:FL-272 M:FL-223  
N:FL-223 N:FL-100 N:FL-101 N:FL-223 N:FL-223 N:FL-232  
W:–––  
M:FL-272 M:FL-272 M:FL-272 M:FL-272 M:FL-272 M:FL-272  
N:––– N:––– N:––– N:––– N:FL-223 N:–––  
W:–––  
W:–––  
W:FL-103 W:–––  
W:–––  
W:–––  
W:FL-272 W:FL-272 W:FL-103 W:FL-272 W:–––  
M:FL-272 M:FL-100 M:FL-232 M:FL-272 M:FL-223 M:FL-272  
N:FL-232 N:FL-232 N:FL-101 N:FL-232 N:FL-232 N:FL-232  
Table key:  
W—wide position  
M—medium (normal) position  
N—Narrow position  
Normal  
Narrow  
Normal  
Narrow  
FL-94  
FL-272  
AM  
FM  
FL-23+SFPC455E  
FL-94  
23  
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RECEIVE AND TRANSMIT 4  
DSP Functions (may require an optional unit depending on version—see p. 61)  
DANF (Automatic Notch Filter) function  
This function automatically attenuates beat tones,  
tuning signals, etc., even if they are moving. The  
automatic notch filter functions in SSB, FM and AM  
modes.  
Select S4 (DSP menu).  
USB  
DSP  
Push [DISPLAY] 1 or 2 times when Mor Gis displayed.  
Push [MENU] one or more times to select S4.  
Push [(F-1)ANF] to toggle the automatic notch filter  
ON and OFF.  
ANF  
BLANK  
S1  
3
5
7
9
20  
40  
60dB  
VFO A  
CH  
P
O
5
DSP” and “ANF” appear when the function is ON.  
NR NRL  
S4 ANF  
DNR (Noise Reduction) function  
This function reduces noise components and picks  
out desired signals which are buried in noise. The  
received AF signals are converted to digital signals  
and then the desired signals are separated from the  
noise. The noise reduction function is available for all  
operating modes.  
Select S4 (DSP menu).  
USB  
DSP  
Push [DISPLAY] 1 or 2 times when Mor Gis displayed.  
Push [MENU] one or more times to select S4.  
Push [(F-2)NR] to toggle the noise reduction func-  
tion ON and OFF.  
NR  
BLANK  
S1  
3
5
7
9
20  
40  
60dB  
VFO A  
CH  
PO  
5
DSP” and “NR” appear when the function is ON.  
Push [(F-3)NRL] to toggle the noise reduction level  
indication ON and OFF.  
NR NRL  
S4 ANF  
Rotate the [M-CH] control to set the noise reduc-  
tion level.  
S4 LEVEL 8 NRL  
Set the control for maximum readability. Deep rotation  
results in audio signal masking or distortion.  
NOTE:Pushing [(F-3)NRL] automatically turns the  
noise reduction function ON, however, the trans-  
ceiver maintains the ON/OFF condition when  
pushing [(F-2)NR].  
24  
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4
RECEIVE AND TRANSMIT  
Functions for transmit  
DOutput power and mic gain  
Setting output power  
Push [DISPLAY] for 2 sec. to select quick set mode.  
USB  
Maximum output power is  
selected.  
Push [MENU] one or more times to select Q1 RF  
POWER.  
Rotate the main dial to select the desired output.  
Output power is displayed in 11 steps (L, 1–9 and H) but  
is continuously selectable.  
S1  
3
5
7
9
20  
40  
60dB  
10  
PO  
5
Q1 RF POWER  
Push [DISPLAY] to exit quick set mode.  
Available power  
BAND  
HF  
SSB/CW/RTTY/FM  
5–100 W  
AM*  
4–40 W  
4–40 W  
2–8 W  
50 MHz  
5–100 W  
144 MHz  
2–20 W  
*Carrier power  
Setting microphone gain  
Microphone gain must be adjusted properly so that  
your signal does not distort when transmitted.  
Select SSB or another phone mode.  
USB  
Microphone gain is  
set to 6.  
Push [DISPLAY] for 2 sec. to select quick set mode.  
Push [MENU] one or more times to select Q2 MIC  
GAIN.  
The ALC meter is selected automatically when operat-  
ing in SSB mode.  
S1  
3
5
7
9
3
20  
40  
60dB  
ALC  
1
2
Q2  
MIC GAIN  
While speaking into the microphone adjust the mic  
gain so that the ALC meter does not peak past the  
ALC zone.  
ALC  
ALC zone  
Push [DISPLAY] to exit quick set mode.  
DMeter function  
The bar meter in the function display acts as an  
S-meter (for relative signal strength, except in WFM  
mode) during receive and can be selected for one of  
three types during transmit.  
DISPLAY  
MEASUREMENT  
INDICATION  
Indicates the relative RF output power.  
Po  
Indicates the ALC level. When the  
meter movement shows the input signal  
level exceeds the allowable level, the  
ALC limits the RF power. In such cases,  
reduce the microphone gain (see  
above).  
Select M3.  
Push [DISPLAY] 1 or 2 times when S or G appears.  
Push [MENU] one or more times to select M3.  
Push [(F-3)MET] one or more times to select the  
desired meter function.  
ALC  
Indicates the SWR over the transmis-  
sion line.  
The display indication changes as in the table at right.  
SWR  
Note:The SWR meter cannot be used for the 144/430  
MHz bands since the meter activates for the [ANT 1] con-  
nector only.  
25  
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RECEIVE AND TRANSMIT 4  
DSpeech compressor  
The IC-706MKIIG has a built-in, low distortion  
speech compressor circuit. This circuit increases  
your average talk power in SSB mode and is espe-  
cially useful for DX’ing when the receiving station is  
having difficulty copying your signal.  
Select USB or LSB mode.  
Select the ALC meter.  
Push [DISPLAY] 1 or 2 times to select M, if necessary.  
Push [MENU] one or more times to select M3, then  
push [(F-3)MET] one or more times to select “ALC.”  
Select the mic gain display in quick set mode.  
Push [DISPLAY] for 2 sec.  
[MENU]  
[(F-2)COM]  
Push [MENU] one or more times to select Q2 MIC  
GAIN.  
Adjust the mic gain.  
[COMP GAIN]  
While transmitting at your normal voice level, the ALC  
meter should read at about the middle of the ALC zone.  
Be sure the mic gain is in the range of 2 to 5.  
Select M4.  
COMP BEEP  
GAIN /SIDE T  
Push [DISPLAY] 1 or 2 times to select M, if necessary.  
Push [MENU] one or more times to select M4.  
Push [(F-2)COM], then adjust [COMP GAIN] so that  
the ALC meter reads within the ALC zone whether  
you speak softly or loudly.  
ALC  
ALC zone  
Note:When the ALC meter peaks above the ALC  
zone, your transmitted voice may be distorted.  
Adjust [COMP GAIN] so that the ALC meter  
reads within the ALC zone.  
DVOX operation  
The VOX (Voice-operated Transmission) function tog-  
gles between transmit and receive with your voice.  
This function provides an opportunity to input log  
entries into your computer, etc., while operating.  
Select M4, then turn the VOX function ON.  
Push [DISPLAY] 1 or 2 times when S or G appears.  
Push [MENU] one or more times to select M4.  
Push [(F-1)VOX] to turn the function ON.  
main dial  
[DISPLAY]  
Select VOX GAIN in quick set mode.  
Push [DISPLAY] for 2 sec. then push [MENU] one or  
more times to select Q4.  
[MENU]  
[(F-1)VOX]  
While speaking into the microphone, adjust [VOX  
GAIN] until the transceiver is transmitting.  
Select VOX DELAY in quick set mode.  
Push [MENU] one or more times to select Q3.  
While speaking into the microphone, adjust [VOX  
DELAY] as desired.  
Select ANTI VOX in quick set mode.  
Push [MENU] one or more times to select Q5.  
If the receive audio from the speaker toggles the  
transceiver to transmit during receive, adjust the  
[ANTI-VOX] to the point where it has no effect.  
Push [DISPLAY] to exit quick set mode.  
26  
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4
RECEIVE AND TRANSMIT  
DOptional AT-180 AUTOMATIC ANTENNA TUNER operation  
The AT-180 automatic antenna tuner matches the IC-  
706MKIIG to the connected antenna automatically.  
Once the tuner matches an antenna, the variable  
capacitor angles are memorized as a preset point for  
each frequency range (100 kHz steps). Therefore,  
when you change the frequency range, the variable  
capacitors are automatically preset to the memorized  
point.  
MANUAL TUNING  
During SSB operation on HF bands at low voice lev-  
els, the AT-180 may not be tuned correctly. In such  
cases, manual tuning is helpful.  
Push and hold [TUNER] for 1 sec. to start manual  
tuning.  
CW mode is selected, a side tone is emitted, and the  
[TUNER] light flashes; then, the previous mode is select-  
ed.  
CAUTION: NEVER transmit with the tuner ON  
when no antenna is connected. This will damage  
both the transceiver and the antenna tuner.  
[TUNER/CALL]  
Note:  
The AT-180 cannot be used for the 144/430 MHz  
band.  
When operating on the 144/430 MHz band, pushing  
the tuner switch selects the call channel (p. 39).  
The AT-180 can match both HF and 50 MHz bands.  
However, operation is different for the HF and 50  
MHz bands.  
Push and hold for 1 sec. to start  
manual tuning.  
If the tuner cannot reduce the SWR to less than 1.5:1  
after 20 sec. of tuning, the [TUNER] light goes out. In  
this case, check the following:  
the antenna connection and feedline  
the antenna SWR (p. 26; meter function)  
TUNER OPERATION  
For the HF band:  
Through inhibit (HF bands only)  
Push [TUNER] to turn the tuner ON. The antenna is  
tuned automatically during transmission when the  
antenna SWR is higher than 1.5:1.  
The AT-180 has a through inhibit condition. When  
selecting this condition, the tuner can be used at poor  
SWR’s. In this case, automatic tuning in the HF  
bands activates only when exceeding SWR 3:1.  
Therefore, manual tuning is necessary each time you  
change the frequency. Although termed “through  
inhibit,the tuner will be “through” if the SWR is high-  
er than 3:1 after tuning.  
When the tuner is OFF, the [TUNER] light goes out.  
[TUNER/CALL]  
CONVENIENT  
Lights to indicate the AT-180  
is turned ON.  
Tuner sensitive condition (HF bands only)  
If you require critical tuning at any time during trans-  
mission, select the tuner sensitive condition. See  
p. 55 for selection.  
For the 50 MHz band:  
Push and hold [TUNER] to tune the antenna. If the  
[TUNER] light flashes slowly while transmitting, push  
and hold [TUNER] again to re-tune the antenna.  
Automatic tuner start (HF bands only)  
If you want to turn OFF the tuner under conditions of  
VSWR 1.5:1 or less, use “automatic tuner on” and  
turn the tuner OFF. See p. 54 for turning the function  
ON and OFF.  
[TUNER/CALL]  
Flashes to indicate re-tuning  
is necessary.  
27  
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RECEIVE AND TRANSMIT 4  
DOptional AH-4 AUTOMATIC ANTENNA TUNER operation  
The AH-4 matches the IC-706MKIIG to a long wire  
antenna more than 7 m/23 ft long (3.5 MHz and  
above).  
See p. 14 for connection.  
See the AH-4 instruction manual for AH-4 installation and  
antenna connection details.  
AH-4 operation  
Tuning is required for each frequency. Be sure to  
re-tune the antenna before transmitting when you  
change the frequency—even slightly.  
Set the desired frequency in an HF band.  
The AH-4 will not operate on frequencies outside of  
ham bands.  
AH-4 setting example:  
For mobile operation  
Optional AH-2b  
USB  
antenna element  
Push and hold [TUNER] for 2 sec.  
The [TUNER] light flashes and “CW” appears while tun-  
ing.  
For outdoor operation  
Long wire  
Push [TUNER] for 2 sec.  
CW  
RWARNING: HIGH VOLTAGE!  
NEVER touch the antenna element while tuning or  
transmitting.  
The [TUNER] light lights constantly when tuning is  
complete.  
When the connected wire cannot be tuned, the  
[TUNER] light goes out, the AH-4 is bypassed and the  
antenna wire is connected to the antenna connector on  
the transceiver directly.  
NEVER operate the AH-4 without an antenna wire.  
The tuner and transceiver will be damaged.  
NEVER operate the AH-4 when it is ungrounded.  
Transmitting before tuning may damage the trans-  
ceiver. Note that the AH-4 cannot tune when using a  
12 λ long wire or multiple of the operating frequency.  
To bypass the AH-4 manually, push [TUNER].  
CONVENIENT  
PTT tune function  
Note: The AH-4 can be used for HF bands and the  
50 MHz band only.  
The AH-4 is always tuned when the PTT is pushed  
after the frequency is changed (more than 1%). This  
function removes the “push and hold [TUNER]” oper-  
ation and activates first transmission on the new fre-  
quency. This function is turned ON in initial set mode,  
item 13 (p. 54).  
28  
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4
RECEIVE AND TRANSMIT  
Split frequency operation  
Split frequency operation allows you to transmit and  
receive on two different frequencies. Split frequency  
operation uses 2 frequencies, one in VFO A and the  
other in VFO B.  
SPL  
CW  
VFO B  
The transmit frequency can be monitored while pushing  
[(F-3)XFC].  
Split operation is now set for receive on 7.057 MHz/CW  
Following is an example of setting 7.057 MHz, CW  
mode in VFO A (for receive) and 7.025 MHz, CW  
mode in VFO B (for transmit).  
and transmit on 7.025 MHz/CW.  
Select VFO A and set the frequency to 7.057  
MHz/CW.  
[(F-2)A/B] is available when M1 appears.  
To exchange the transmit and receive frequencies,  
push [(F-2)A/B] in M1.  
[(F-3)V/M] is available when M2 appears.  
CW  
CONVENIENT  
The G3 display conveniently shows the transmit fre-  
quency during split frequency operation and [(F-3)Ñ]  
allows you to change the transmit frequency.  
VFO A  
Push or push and hold [(F-1)SPL] in the M1 dis-  
play.  
Split lock function  
Push [SPL]: activates split only.  
Push and hold [SPL]: activates the quick split  
below.  
The split lock function is convenient for changing only  
the transmit frequency. Otherwise, accidentally  
releasing the [(F-3)XFC] switch while rotating the  
main dial changes the receive frequency. The split  
lock’s effectiveness can be selected in initial set  
mode (item 12) for both receive and transmit fre-  
quencies; or only the receive frequency. (p. 52)  
SPL  
CW  
VFO A  
To change the receive frequency, rotate the main  
dial; to change the transmit frequency, rotate the  
main dial while pushing [(F-3)XFC].  
DQuick split function  
The quick split function is ON by default. If desired, it  
can be turned OFF in initial set mode (p. 51). In this  
case, pushing [(F-1)SPL] for 2 sec. has the same  
effect as pushing [(F-1)SPL] momentarily as in nor-  
mal split operation.  
In M1, when you push [(F-1)SPL] for 2 sec., split fre-  
quency operation is turned ON and VFO B is auto-  
matically changed according to the plus/minus pre-  
programmed shift frequency set in initial set mode (or  
equalized when 0 kHz is programmed as the split  
shift frequency). This shortens the time needed to  
start split frequency operation—great for DX’ing.  
PROGRAMMING SPLIT SHIFT FREQUENCY  
Push [POWER] to turn power OFF.  
While pushing [LOCK], push [POWER] to turn  
power ON and enter initial set mode.  
Select “SPL OFFSET” using [MENU], [M-CH] or  
the [Y]/[Z] keys, then rotate the main dial to select  
the desired split offset.  
SPL  
F-1  
Push  
for 2 sec.  
VFO A  
SPL  
SPL  
The split offset can be selected from –4000 kHz to  
+4000 kHz.  
VFO A  
VFO B  
No shift frequency is programmed.  
16 SPL OFFSET  
SPL  
SPL  
VFO A  
Note: This setting is not valid for FM operation. This  
is because FM operation uses the duplex setting for  
repeater operation (next page).  
VFO B  
+10 kHz is programmed as a shift  
frequency.  
29  
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RECEIVE AND TRANSMIT 4  
DRepeater operation  
A repeater amplifies received signals and retransmits  
them at a different frequency. When using a repeater,  
the transmit frequency is shifted from the receive fre-  
quency by an offset frequency. A repeater can be  
accessed using split frequency operation with the  
shift frequency set to the repeater’s offset frequency.  
Turn the quick split  
function ON.  
(Initial set mode default  
is ON.)  
Set the offset frequency and turn ON the quick split  
function in initial set mode in advance (p. 52).  
If the quick split function is turned OFF, both transmit  
and receive must be set separately.  
Push [MODE] one or more times to select FM  
mode, then set the receive frequency.  
12 QUICK SPLIT  
Select a suitable tone frequency or the 1750 Hz  
tone burst in quick set mode.  
Push [DISPLAY] for 2 sec., then push [MENU]  
one or more times to select “Q4 RPTR TONE.”  
If FM mode has not been selected, this item does  
not appear.  
Rotate the main dial to set a subaudible tone fre-  
quency or the 1750 Hz tone burst function.  
Push [DISPLAY] to exit quick set mode.  
Push [(F-1)SPL] for 2 sec. (in the M1 display) to  
activate the split frequency function (duplex func-  
tion) with the pre-selected offset.  
Set the tone frequency  
(quick set mode).  
See p. 49 for setting de-  
tails and available fre-  
quencies.  
Q6  
RPTR TONE  
SPL  
FM  
T
When a subaudible tone frequency (excepting 1750 Hz)  
is selected in , “FM-T” is selected simultaneously.  
Push and hold [PTT] to transmit; release [PTT] to  
receive.  
VFO A  
S1  
3
5
7
9
20  
40  
60dB  
10  
PO  
5
CH  
M4 VOX DUP TON  
When a 1750 Hz tone burst is selected, push and hold  
[(F-3)TON] in the M4 display while pushing [PTT] to  
send the 1750 Hz tone burst.  
To check the repeater input frequency (direct sig-  
nal from the other station), push and hold  
[(F-3)XFC] in the M1display.  
To return to simplex operation, push [(F-1)SPL].  
PROGRAMMING DUPLEX SHIFT FREQUENCY  
Push [POWER] to turn power OFF.  
While pushing [LOCK], push [POWER] to turn  
power ON and enter initial set mode.  
Select “DUP 144M” using [MENU] or the  
[UP]/[DN] keys, then rotate the main dial to select  
the desired duplex offset.  
CONVENIENT  
Each memory channel can store a tone frequency  
(subaudible tones or a tone burst) and an offset fre-  
quency, as well as the operating frequency. Store  
repeater information into memory channels for quick  
and easy access to repeaters.  
The duplex offset can be selected from –4000 kHz to  
+4000 kHz.  
17 DUP 144M  
30  
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4
RECEIVE AND TRANSMIT  
Tone squelch operation  
Tone squelch operation is a method of communica-  
tions using selective calling. Only received signals  
having a matching tone will open the squelch. Before  
communicating using tone squelch, all members of  
your party must agree on the tone squelch frequency  
to use.  
Push [MODE] one or more times to select FM  
mode.  
Push and hold [DISPLAY] to enter Quick Set mode.  
Push [MENU] one or more times to select item Q7  
TONE SQL.  
[Y]/[Z] or [M-CH] can also be used.  
Rotate the main dial to select the desired subaudi-  
ble tone frequency.  
Set the tone frequency  
(quick set mode).  
See p. 49 for setting de-  
tails and available fre-  
quencies.  
Available tone frequencies are the same as for repeater  
tone operation (see previous page).  
Q7  
TONE SQL  
Select M4 and turn the tone squelch function ON.  
Push [(F-3)TON] to toggle tone squelch opera-  
tion ON and OFF.  
SPL  
FM TSQL  
When tone squelch is turned ON, “TSQLappears in  
the display.  
VFO A  
S1  
3
5
7
9
20  
40  
60dB  
10  
PO  
5
CH  
Communicate in the usual manner.  
Push [PTT] to transmit; release to receive.  
M4 VOX DUP TON  
Tone scan operation  
By monitoring a signal that is being transmitted on a  
repeater input frequency, you can determine the tone  
frequency necessary to open a repeater.  
During tone squelch or repeater operation, push  
and hold [DISPLAY] to enter Quick Set mode.  
Push [MENU] one or more times to select item Q8  
T-SQL SCN during tone squelch operation, or  
Q8 RPTR-T SCN during repeater operation.  
[Y]/[Z] or [M-CH] can also be used.  
Push [(F-3)SCN] to toggle tone scan operation ON  
and OFF.  
While scanning tone frequencies are displayed instead  
During tone squelch  
operation.  
FM TSQL  
S1  
3
5
7
9
20  
40  
60dB  
10  
PO  
5
Q8 T-SQL SCN  
During repeater operation.  
FM  
T
of the operating frequency.  
When a matched tone is detected, tone scan automati-  
cally stops, the matched tone is displayed and the  
repeater tone (or tone squelch tone) setting is automat-  
ically adjusted accordingly.  
S1  
3
5
7
9
20  
40  
60dB  
10  
PO  
5
Q8 RPTR-T SCN  
Push [DISPLAY] to return to the main menu.  
31  
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RECEIVE AND TRANSMIT 4  
One-touch repeater function  
This function allows you to set repeater operation  
with the push of one switch.  
Push [(Y)BAND]/[(Z)BAND] to select the 28 MHz  
band.  
FM  
Rotate [DIAL] to select the operating frequency.  
Push [MODE] one or more times to select FM.  
Select M4and turn the one-touch repeater function  
ON.  
BLANK  
S1  
3
5
7
9
20  
40  
60dB  
10  
VFO A  
CH  
PO  
5
A/B A=B  
M1 SPL  
Push and hold [(F-2)DUP] to toggle the one-  
touch repeater function ON and OFF.  
When the one-touch repeater function is turned ON,  
“DUP” (duplex indicator) and “T” (tone frequency  
indicator) appear in the display.  
FM  
T
DUP  
VFO A  
BLANK  
S1  
3
5
7
9
20  
40  
60dB  
10  
CH  
PO  
5
Be sure to set the duplex direction and offset in ini-  
tial set mode in advance (p. 52).  
DUP TON  
M4 VOX  
Push [(F-2)DUP] to toggle the duplex direction.  
NOTE:When you want to transmit a 1750 Hz tone,  
while pushing [PTT], push [(F-3)TON] in the M4  
display during repeater operation.  
Auto repeater function  
This function automatically activates the repeater set-  
tings (DUP+ or DUP– and tone encoder ON/OFF)  
when the operating frequency falls within the general  
output frequency range and deactivates them when  
outside of the range.  
FREQUENCY  
DUPLEX DIRECTION  
145.200–145.495 MHz  
146.610–146.995 MHz  
“DUP–” appears  
147.000–147.395 MHz  
442.000–444.995 MHz  
447.000–449.995 MHz  
“DUP+” appears  
“DUP+” appears  
“DUP–” appears  
Set the auto repeater function ON or OFF in initial set  
mode in advance (p. 53). When set ON, repeater set-  
tings are automatically activated according to the  
table at right.  
NOTE:This function is available for the USA ver-  
sion only.  
32  
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4
RECEIVE AND TRANSMIT  
Functions for CW  
DConnections for CW  
Rear panel  
Quick set mode setting  
CW  
CW  
CW  
[ELEC KEY]  
For no break-in operation:  
Paddle  
Connect an external switch such as  
a foot switch; or use the RTTY  
SEND terminal for all bands.  
[ACC]  
13  
10 11 12  
9
5
1
(See p. 35.)  
6
2
7
3
8
4
144/430 MHz  
CW  
CW  
HF/50 MHz  
Straight key  
Q4 CW PADDLE  
See p. 34 for  
connection details:  
[MICROPHONE]  
Microphone  
Paddle operation from  
front panel MIC connector.  
DCW operation  
Connect a paddle or straight key as above.  
Select CW (or CWå) mode with [MODE].  
Set CW break-in operation as semi break-in, full  
break-in or OFF.  
CW mode and semi  
break-in operation is  
selected.  
CW  
BK  
Push [DISPLAY] one or two times to select M, if necessary.  
Push [MENU] one or more times to select M4.  
Push [(F-2)BRK] one or more times to select the desired  
condition:  
VFO A  
S1  
3
5
7
9
20  
40  
60dB  
10  
PO  
5
CH  
1/4 BRK  
M4  
AGC  
“F-BK”:  
“BK”:  
full break-in  
semi break-in  
No indicator: no break-in (ACC socket connection is  
necessary as above.)  
Set the CW delay time when semi break-in opera-  
tion is selected.  
Delay time of 6.0 dots is  
selected in quick set  
mode for semi break-in  
operation.  
CW  
Push [DISPLAY] for 2 sec. to select quick set  
mode; push [MENU] one or more times to select  
Q3 BK-IN DELAY; then rotate the main dial  
to set the desired delay time (see p. 48 for  
details).  
BK-IN  
Q3  
DELAY  
33  
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RECEIVE AND TRANSMIT 4  
QUICK SET MODE  
DCW pitch control  
The received CW audio pitch and monitored CW  
audio pitch can be adjusted to suit your preferences  
(300 to 900 Hz) without changing the operating fre-  
quency.  
Rotate the main dial to set the desired pitch.  
Push [DISPLAY] to exit quick set mode.  
CW  
This shows the default  
Push [MODE] one or more times to select CW  
mode.  
setting for the CW pitch  
control (600 Hz).  
Select CW PITCH in quick set mode.  
Push [DISP] for 2 sec. then push [MENU] one or more  
times.  
Q2 CW  
PITCH  
DCW reverse mode  
The CWå (CW Reverse) mode receives CW signals  
with a reverse side CW carrier point like that of LSB  
and USB modes. Use this mode when interference  
signals are near the desired signal and you want to  
change the interference tone.  
• Receive audio tone response  
(Normal) CW  
(Reverse) CWå  
MODE  
600 Hz  
600 Hz  
Push [MODE] one or more times to select CW  
mode.  
Push and hold to toggle between CW and CWå  
modes.  
Check the interference tone.  
inteference  
signal  
BFO  
inteference signal  
BFO  
QUICK SET MODE  
DElectronic CW keyer  
The IC-706MKIIG has an electronic keyer. Both key-  
ing speed and weight (the ratio of dot:space:dash)  
can be set in quick set mode.  
Setting the electronic keyer  
KEYING WEIGHT EXAMPLE: morse code “K”  
Select CW mode with [MODE].  
DOT  
(Fixed*)  
Push [DISPLAY] for 2 sec. to enter quick set mode.  
Push [MENU] one or more times to select item Q4  
CW PADDLE, then rotate the main dial to select  
the paddle type.  
DASH  
DASH  
Weight setting:  
1:1:3 (default)  
When “ud” is selected, the up/down switches on the  
microphone can be used as a paddle.  
Push [MENU] two more times to select item Q6  
RATIO, then rotate the main dial to select the  
desired weight.  
Weight setting:  
Adjusted  
Adjustable range  
SPACE (Fixed*)  
Key weight can be selected from 2.8 to 4.5.  
Check the selected ratio with the side tone function in  
CW mode.  
*SPACE and DOT length can be adjusted with “Q5 KEY  
SPEED” only.  
Push [DISPLAY] momentarily to exit quick set mode.  
Paddle operation from front panel MIC connector  
Connect a CW paddle as at right to operate an elec-  
tronic keyer from the front panel MIC connector.  
front panel  
MIC connector  
DOT  
E
This function is available from the front panel mic  
connector only.  
Be sure to select item “n,r,” “buG” or “oFF” in Q4  
CW PADDLE in quick set mode. (p. 49)  
Connect straight key to “DOT” side.  
3.9 k±5%  
2.2 k±5%  
CW  
paddle  
MIC U/D  
DASH  
34  
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4
RECEIVE AND TRANSMIT  
Functions for RTTY  
DConnections for RTTY (FSK)  
Rear panel  
2-conductor 1/8˝ plug  
TU or TNC  
Personal computer  
AF  
GND  
SEND  
FSKK GND  
Use either the ACC or one of the two 1/8˝ plugs  
3-conductor 1/8˝ plug (supplied)  
Rear panel  
view  
SQL*1 (light green)  
AF out (light blue)  
MSEND*2  
13  
9 10 11 12  
*1Connect SQL line when required.  
5
1
6
2
7
3
8
4
GND (red)  
2
*
3
7
HF/50 MHz: orange  
144 MHz: purple  
FSKK (black)  
Colors refer to connection  
to the supplied ACC cable.  
DConnections for AFSK  
AF out  
PTT  
GND  
MIC  
GND  
SQL  
Use either the ACC or microphone connector  
Rear panel  
view  
SQL*1 (light green)  
AF out (light blue)  
AF in (pink)  
13  
9 10 11 12  
*1Connect SQL line when required.  
5
1
6
2
7
3
8
4
HSEND*2  
2
*
3
7
HF/50 MHz: orange  
144 MHz: purple  
GND (red)  
Colors refer to connection  
to the supplied ACC cable.  
35  
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RECEIVE AND TRANSMIT 4  
DRTTY (FSK) operation  
Connect a terminal unit as at left.  
Select RTTY (or åRTTY—see bottom of page)  
mode with [MODE].  
Select the desired FSK tone/shift frequencies and  
keying polarity as below.  
RTTY mode is selected.  
R
TTY  
S1  
3
5
7
9
20  
40  
60dB VFO A  
PO  
5
10  
CH  
SPL A/B A=B  
M1  
Set the desired frequency with the main dial.  
Use [(F-1)1/4] in the M4display when critical setting is  
required.  
Operate the connected PC or TNC (TU).  
PRESETTING FOR RTTY  
Tone frequency  
RTTY mark frequency  
is set to 2125 Hz.  
RTTY  
Push [DISPLAY] for 2 sec. to select quick set mode.  
Push [MENU] one or more times to select Q2  
RTTY TONE; then rotate the main dial to select  
the desired tone frequency (p. 48).  
2125 and 1615 Hz are  
available.  
RTTY TONE  
Q2  
Q3  
Q4  
RTTY shift frequency is  
set to 170 Hz.  
Shift frequency  
RTTY  
Push [DISPLAY] for 2 sec. to select quick set mode.  
Push [MENU] one or more times to select Q3  
RTTY SHIFT; then rotate the main dial to select  
the desired shift frequency (p. 48).  
170/200/425 Hz are  
available.  
RTTY SHIFT  
RTTY keying is set to  
‘normal’.  
RTTY keying  
RTTY  
Push [DISPLAY] for 2 sec. to select quick set mode.  
Push [MENU] one or more times to select Q4  
RTTY KEYING; then rotate the main dial to  
select the desired keying polarity (p. 48).  
normal: key open=mark  
key close=space  
reverse: key open=space  
key close=mark  
RTTY KEYING  
DRTTY (AFSK) operation  
Connect a terminal unit as at left.  
Select SSB (LSB) mode with [MODE].  
Generally, LSB is used on the HF bands and FM is used  
for the VHF band.  
Select the desired FSK tone/shift frequencies and  
keying polarity as below.  
RTTY reverse mode  
Received characters are occasionally garbled when  
the receive signal is reversed between MARK and  
SPACE. This reversal can be caused by incorrect  
TNC connections, settings, commands, etc.  
To receive a reversed RTTY signal correctly, select  
åRTTY (RTTY reverse) mode.  
Push [MODE] for 1 sec. (while RTTY is selected)  
to select åRTTY mode.  
Check the receive signal.  
Set the desired frequency with the main dial.  
Use [(F-1)1/4] in the M4display when critical setting is  
required.  
Operate the connected PC or TNC (TU).  
PRESETTING FOR RTTY  
Tone frequency  
Same as above.  
Normal  
mark  
Reverse  
space  
mark  
space  
Shift frequency  
Same as above.  
2125  
Hz  
2125  
Hz  
170  
Hz  
170  
Hz  
RTTY keying  
Same as above.  
BFO  
BFO  
displayed freq.  
displayed freq.  
36  
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4
RECEIVE AND TRANSMIT  
Packet operation  
DConnections for packet  
TX AUDIO  
GND  
DATA IN  
q
w
GND  
TNC SIDE  
PTTP  
DATA OUT  
e
r
y
RX AUDIO  
SQL  
SQ  
t
AF OUT  
PTT  
DATA  
RS-232C  
Rear panel  
TU or TNC  
Personal computer  
DData socket  
PIN #/NAME  
q DATA IN  
w GND  
DESCRIPTION  
Communication data input.  
w
q
Ground for DATA IN, DATA OUT and AF OUT.  
Transmits when grounded.  
r
e
e PTTP  
r DATA OUT  
t AF OUT  
Outputs 9600 bps receive data.  
Outputs 1200 bps receive data.  
Squelch output.  
t
y
Rear panel view  
y SQ  
Goes to ground when squelch opens.  
DAdjusting the transmit signal output from the TNC  
NOTE: For packet operation the transceiver can  
be set to one of two data speeds: 1200 bps or  
9600 bps. Data speed is set in initial set mode  
(see p. 54 item 29 9600 MODE).  
1.When using a level meter or synchroscope, adjust  
the TX audio level (DATA IN level) from the TNC as  
follows.  
0.4 Vp-p (0.2 Vrms): recommended level  
0.2 Vp-p–0.5 Vp-p (0.1 Vrms–0.25 Vrms):  
acceptable level  
Data speed is set in initial set mode (see p. 53 item  
29 9600 MODE).When setting data transmission  
speed to 9600 bps, the DATA signal coming from the  
TNC is applied exclusively to the internal limiter cir-  
cuitry to automatically maintain bandwidth.  
NEVER apply data levels from the TNC of over 0.6  
Vp-p, otherwise the transceiver will not be able to  
maintain the band width and may possibly interfere  
with other stations.  
2.When not using a measuring device.  
Connect the IC-706MKIIG to a TNC.  
Enter a test mode (“CAL, etc.) on the TNC, then  
transmit some test data.  
When the transceiver fails to transmit test data or  
transmits sporadically (TX indicator doesn’t appear  
or flashes):  
Decrease the TNC output level until the transmit  
indicator lights continuously.  
When transmission is not successful even though  
the TX indictor lights continuously:  
NOTE: Read the instructions supplied with your  
TNC carefully before attempting packet operation  
with the IC-706MKIIG.  
Increase the TNC output level.  
37  
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RECEIVE AND TRANSMIT 4  
SWR  
The IC-706MKIIG has a built-in circuit for measuring  
antenna SWR while in SSB mode—no external equip-  
ment or special adjustments are necessary.  
NOTE: The SWR of ANT1 only can be read since  
ANT2 has no measuring circuit.  
DMeasuring SWR  
The IC-706MKIIG can measure SWR in 2 ways:  
(A) Spot measurement; or (B) Plot measurement.  
CW  
(A) Spot measurement  
Confirm that the output power is over 30 W.  
Push [MENU] one or more times to select M3.  
Push [(F3)MET] to select the SWR meter.  
Push [MODE] one or more times to select CW or  
RTTY operation.  
BLANK  
S1  
3
5
7
9
3
20  
40 60dB  
VFO A  
CH  
SWR  
1
1.5  
2
NB  
M3 FIL  
MET  
Key down or push [PTT] to transmit; then read the actu-  
al SWR from the meter:  
1.5 well matched antenna  
> 1.5 check antenna or cable connection, etc.  
SWR  
1
1.5  
2
3
5
10  
The best match is in this range.  
(B) Plot measurement  
Plot measurement allows you to measure the SWR  
over an entire band.  
G210k  
STR  
Frequency span  
Step bar indication  
Frequency indication mark  
Measure start indicator  
Span  
Push [F-1] for 1 sec. to change the  
selected span.  
Step bar Push [F-2] for 1 sec. to change the step  
bar (3, 5, 7 or 9 steps are available.  
Marker  
Start  
Indicates the currently active step bar.  
Flashes while the SWR is being mea-  
sured.  
qConfirm that the output power is over 30 W.  
wPush [DISPLAY] twice to select G1.  
ePush [MENU] to select G2.  
Step y  
RTTY  
rSet the center frequency for the SWR to be mea-  
sured.  
tPush and hold [(F1)10k] one or more times to  
select the desired frequency pitch.  
yPush and hold [(F2)] one or more times to select  
the desired step.  
BLANK  
S1  
3
5
7
9
20  
40 60dB  
10  
VFO A  
CH  
PO  
5
G2  
STR  
___  
50k  
Step o  
uAfter selecting the desired pitch and step, push  
[(F3)STR] to measure the SWR.  
USB  
iPush and hold [PTT] to display the SWR in a bar  
graph readout.  
oWhen [PTT] is released, the frequency marker and  
frequency indication move to the next frequency to  
be measured.  
BLANK  
S1  
3
5
7
9
20  
40 60dB  
10  
VFO A  
CH  
PO  
5
G2  
50k  
STR  
4
3
3
2
2
1
1
.
.
.
.
.
.
.
0
5
0
5
0
5
0
!Repeat steps i.and oto measure SWR over the  
entire frequency range.  
!When the measured SWR is less than 1.5, the  
antenna is well matched.  
The antenna is well matched in this range  
38  
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5
MEMORY AND SCAN OPERATION  
Memory channels  
The transceiver has 105 memory channels (plus 2 call  
channels). Memory mode is useful for quickly chang-  
ing to often-used frequencies.  
Note: During split frequency operation, programmed  
memory contents can be called up to the SUB readout  
(dot matrix portion of the display).  
All 105 memory channels are tuneable which means  
the programmed frequency can be tuned temporarily  
with the main dial, etc., in memory mode.  
MEMORY  
MEMORY  
TRANSFER  
TO VFO  
OVER-  
WRITING  
CHANNEL  
NUMBER  
CAPABILITY  
CLEAR  
CHANNEL  
Independent transmit and receive  
frequencies and one mode in each  
memory channel.  
In addition, tone frequencies (or  
1750 Hz tone burst) can also be  
stored for repeater use.  
Regular  
(split memory)  
1–99  
Yes  
Yes  
Yes  
One frequency and one mode in  
each memory channel as scan  
edges for programmed scan.  
1A–3B  
(3 pair)  
Scan edges  
Yes  
Yes  
Yes  
Yes  
No  
No  
Same as regular, but only 144/430  
MHz band can be programmed.  
Call channel C1 (144 MHz)  
(split memory) C2 (430 MHz)  
Memory channel selection  
Select M2 functions.  
[EXAMPLE]: Selecting memory channel 17.  
Push [DISPLAY] 1 or 2 times to select M.  
Push [MENU] one or more times to select M2.  
Push [(F-3)V/M] to select memory mode.  
Rotate [M-CH] to select the desired memory chan-  
nel.  
CW  
VFO A  
V/M  
F-3  
CH  
USB  
USB  
All memory channels including blank channels can be  
selected.  
[UP]/[DN] on the microphone changes the frequency.  
To return to VFO mode, push [(F-3)V/M] again.  
M-CH SHIFT  
CH  
SPLIT  
MEMO  
MEMO  
CH  
Memory clearing  
Any unnecessary memory channels can be cleared.  
The cleared memory channels become blank chan-  
nels.  
USB  
Push [(F-3)V/M] in the M2display to select memo-  
ry mode.  
Rotate [M-CH] to select a memory channel to be  
cleared.  
Push [MCL(F-2)] for 2 sec. to clear the contents.  
The programmed frequency and operating mode disap-  
pear and “}” appears.  
SPLIT  
CH  
MEMO  
Push for  
2 sec.  
MCL  
F-2  
BLANK  
To return to VFO mode, push [(F-3)V/M] again.  
CH  
MEMO  
39  
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MEMORY AND SCAN OPERATION 5  
Memory/call programming  
[EXAMPLE]: Programming 7.088 MHz/LSB into ch 12.  
Programming in VFO mode  
CW  
Select M2 functions.  
TS  
Push [DISPLAY] 1 or 2 times to select M.  
Push [MENU] one or more times to select the M2func-  
tions.  
VFO A  
CH  
MODE  
Set the desired frequency and operating mode in  
VFO mode.  
LSB  
If you want to program the split frequency function, pro-  
gram both receive and transmit frequencies into VFO A  
and B, then turn ON the split function.  
If you want to program a repeater function, set a tone  
frequency (p. 49) in addition to the receive/transmit fre-  
quencies.  
M-CH SHIFT  
VFO A  
CH  
LSB  
BLANK  
VFO A  
SPLIT  
Rotate [M-CH] to select the desired memory chan-  
nel, or the call channel (144/430 MHz bands only).  
CH  
Push for  
MW  
F-1  
LSB  
Select memory mode to confirm the contents, if desired.  
2 sec.  
• “}” appears if the selected memory channel is a  
blank channel (and does not have contents).  
Push [(F-1)MW] for 2 sec. to program the displayed  
frequency and operating mode into the memory  
channel.  
VFO A  
CH  
To check the programmed contents, push [(F-3)V/M]  
to select memory mode; or, push [CALL] to select the  
call channel.  
Programming in memory mode  
[EXAMPLE]: Programming 21.280 MHz/USB into  
ch 18.  
Set the desired frequency and operating mode.  
Select memory mode, then select the desired  
memory channel with [M-CH].  
USB  
M-CH SHIFT  
Push [Y]/[Z] when you want to program blank chan-  
nels.  
CH  
MEMO  
CW  
Push [(F-1)MW] for 2 sec. to program the displayed  
frequency and operating mode into the memory  
channel.  
TS  
CH  
CH  
CH  
MEMO  
MEMO  
MEMO  
USB  
USB  
MODE  
SPLIT  
Push for  
2 sec.  
MW  
F-1  
40  
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5
MEMORY AND SCAN OPERATION  
Frequency transferring  
The frequency and operating mode can be transferred  
from memory mode to VFO mode.  
Select VFO mode with [(F-3)V/M] in the M2 dis-  
play.  
[EXAMPLE]: Transferring contents of memory 16.  
Operating frequency:  
21.320 MHz/USB (VFO)  
Contents of memory 16: 14.020 MHz/CW  
Select a memory channel with [M-CH].  
Select memory mode to confirm the memory channel’s  
contents, if desired; then return to VFO mode.  
}” appears if the selected memory channel is a  
blank channel (and does not have contents). In this  
case transferring is not possible.  
USB  
M-CH SHIFT  
VFO A  
CH  
Push [(F-2)MÜV] for 2 sec. to transfer the frequen-  
cy and operating mode.  
USB  
Transferred frequency and operating mode appear in  
the display.  
VFO A  
SPLIT  
MÜV” does not appear in memory mode.  
CH  
Push for  
2 sec.  
MÜV  
F-2  
CW  
VFO A  
CH  
Memory names  
All memory channels (including scan edges and the  
call channel) can be tagged with alphanumeric names  
of up to 9 characters each.  
All common keyboard characters (ASCII characters 33  
to 126) can be used, including numerals and punctua-  
tion marks.  
Calling up memory names  
Select the G4 display.  
G4 memory name  
É
Push [DISPLAY] 1 or 2 times to select G.  
Push [MENU] one or more times to select the  
G4 display.  
G4  
É
F-3  
Select a memory channel with [M-CH].  
name edit  
Editing (programming) memory names  
ÄÅÖ  
ÄÅR  
Call up the desired memory (channel) name as  
above.  
Ç
Push [(F-3)É] to enter memory name edit mode.  
name edit” appears briefly, then a flashing cursor  
appears under the first character position.  
Rotate the main dial to select the desired charac-  
ter, then advance the cursor position.  
[(F-3)Ç] increments the cursor position; [(F-1)Å] decre-  
ments the cursor position.  
F-3  
Ç
Ç
Ç
ÄÅRe  
F-3  
Ç
[(F-2)] overwrites the character with a space.  
Repeat this procedure until all desired characters  
have been selected.  
Push [(MENU)Ä] to exit memory name edit mode.  
The G4display reappears and the programmed memo-  
ry name is displayed.  
ÄÅRepeaterÖ  
MENU  
Ç
Ä
G4 Repeater É  
41  
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MEMORY AND SCAN OPERATION 5  
Memo pads  
The transceiver has a memo pad function to store fre-  
quency and operating mode for easy write and recall.  
The memo pads are separate from memory channels.  
Memo pads are convenient when you want to memo-  
rize a frequency and operating mode temporarily, such  
as when you find a DX station in a pile-up or when a  
station is busy for a long time and you want to tem-  
porarily search for other stations.  
The default number of memo pads is 5, however, this  
can be increased to 10 in initial set mode if desired  
(p. 53).  
Use the transceiver’s memo pads instead of relying on  
hastily scribbled notes that are easily misplaced.  
Writing frequencies and operating modes  
into memo pads  
Displayed frequency and mode  
USB  
Push MPW  
Select the S1 display.  
F-2  
Push [DISPLAY] 1 or 2 times to select S.  
Push [MENU] one or more times to select S1.  
Push [(F-2)MPW] to program the frequency into a  
memo pad.  
USB  
Newest  
MP5  
MP4  
When you write a 6th frequency and operating mode,  
the oldest written frequency and operating mode are  
automatically erased to make room for the new set-  
tings.  
MP3  
MP2  
Note: Each memo pad must have its own unique  
combination of frequency and operating mode;  
memo pads having identical settings cannot be writ-  
ten.  
MP1  
Oldest  
The oldest written frequency  
and mode are erased.  
Calling up a frequency from a memo pad  
You can simply call up the desired frequency and  
operating mode of a memo pad by pushing  
[(F-3)MPR] in the S1 display.  
Make sure S1 is selected in advance.  
Both VFO and memory modes can be use.  
The frequency and operating mode are called up, starting  
from the most recently written.  
MPR  
F-3  
MEMO PADS  
USB  
When you call up a frequency and an operating  
mode from memo pads with [(F-3)MPR], the previ-  
ously displayed frequency and operating mode are  
automatically stored in a temporary pad. The fre-  
quency and operating mode in the temporary pad  
can be recalled by pushing [(F-3)MPR] one or more  
times.  
USB  
MP5  
MP4  
VFO or  
MEMORY  
mode  
MP3  
MP2  
MPR  
F-3  
Note:If you change the frequency or operating mode  
called up from a memo pad, the frequency and oper-  
ating mode in the temporary pad are erased.  
MP1  
42  
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5
MEMORY AND SCAN OPERATION  
Scan types  
PROGRAMMED SCAN  
PRIORITY WATCH  
Repeatedly scans between two scan edge frequencies  
(scan edge memory channels 1A and 1B).  
Checks for signals on a memory or call channel while  
operating on a VFO frequency.  
Memory channel watch  
Call channel watch  
Scan  
Scan edge 1A or 1B  
Scan edge 1B or 1A  
VFO  
frequency  
VFO  
frequency  
Memory  
channel  
Call  
channel  
Jump  
This scan operates in VFO mode.  
This scan operates in VFO mode.  
MEMORY SCAN  
SELECTED MEMORY SCAN  
Repeatedly scans all programmed memory channels.  
Repeatedly scans all selected memory channels.  
BLANK  
BLANK  
S (select)  
S (select)  
Mch 2  
Mch 3  
Mch 4  
Mch 2  
Mch 3  
Mch 4  
S (select)  
S (select)  
Mch 1  
Mch 5  
Mch 1  
Mch 5  
S (select)  
S (select)  
Mch 99  
Mch 7  
Mch 6  
Mch 99  
Mch 7  
Mch 6  
S (select)  
S (select)  
S (select)  
S (select)  
This scan operates in memory mode.  
This scan operates in memory mode.  
Preparation  
Channels  
Scan speed  
Scan speed can be selected from 2 levels, high or low,  
in initial set mode. See p. 47 for details.  
For programmed scan:Program scan edge frequen-  
cies into scan edge memory channels 1A and 1B  
(p. 34).  
Squelch condition  
SCAN  
For memory scan:Program 2 or more memory chan-  
nels except scan edge memory channels.  
PROGRAMMED  
SCAN  
MEMORY SCANS  
PRIORITY WATCH  
STARTS  
WITH  
For memory select scan: Designate 2 or more memo-  
ry channels as select memory channels—select a  
memory channel, then push [(F-2)SEL] in the S2 dis-  
play (memory mode) to designate the channel as a  
select memory channel.  
The scan continues  
until it is stopped  
manually, and does  
not pause even if it  
detects signals.  
Scan pauses on each  
channel when the  
scan resume is ON;  
not applicable when  
OFF.  
For priority watch: Program 1 memory channel to be  
watched.  
SQUELCH  
OPEN  
This is not applicable  
when the scan  
resume is OFF and a  
programmable step  
(more than 1 kHz) is  
selected.  
Scan resume ON/OFF  
You can select the scan to resume or cancel when  
detecting a signal, in initial set mode, item 21. Scan  
resume ON/OFF must be set before operating a scan.  
See p. 53 for ON/OFF setting and scan resume condi-  
tion details.  
Scan stops when detecting a signal.  
If you set scan resume ON in initial set mode,  
the scan pauses for 10 sec. when detecting a  
signal, then resumes. When a signal disap-  
pears while scan is paused, scan resumes 2  
sec. later.  
SQUELCH  
CLOSED  
43  
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MEMORY AND SCAN OPERATION 5  
Programmed scan operation  
Select VFO mode.  
USB  
Select the desired operating mode.  
The operating mode can also be changed while scan-  
ning.  
Select  
VFO mode  
VFO A  
S1  
3
5
7
9
20  
40  
60dB  
10  
Set [SQL] open or closed.  
CH  
PO  
5
See page a left for squelch condition.  
Select S2, then push [(F-1)SCN] to start the scan.  
Decimal point blinks while scanning.  
S2 SCN PRI V/M  
F-1  
then push [(F-1)SCN]  
When the scan detects a signal, the scan turns  
OFF, pauses or ignores it depending on the  
resume setting and the squelch condition.  
During scan [TS] can be used only when resume is ON.  
To cancel the scan push [(F-1)SCN].  
Note: If the same frequencies are programmed into  
the scan edge memory channels 1A and 1B, pro-  
grammed scan does not start.  
Memory scan operation  
Select memory mode.  
USB  
Close the squelch with [SQL].  
Select S2, then push [(F-1)SCN] to start the scan.  
Decimal point blinks while scanning.  
Select  
memory mode  
S1  
3
5
7
9
20  
40  
60dB  
10  
When the scan detects a signal, the scan stops or  
pauses depending on the resume setting.  
To cancel the scan push [(F-1)SCN].  
CH  
P
O
5
MEMO  
S2 SCN  
SEL V/M  
F-1  
then push [(F-1)SCN]  
Note: Two or more memory channels must be pro-  
grammed for memory scan to start.  
Select memory scan operation  
Select memory mode.  
USB  
Select  
memory mode  
Close the squelch with [SQL].  
Select S2, then push [(F-1)SCN] to start the mem-  
ory scan.  
S1  
3
5
7
9
20  
40  
60dB  
10  
S
CH  
Designate  
“S.”  
PO  
5
MEMO  
Decimal point blinks while scanning.  
Push [(F-2)SEL] to change the memory scan to  
select memory scan.  
S2 SCN  
SEL V/M  
F-1  
F-2  
Push [(F-2)SEL] for 2 sec. to clear all select memory  
channels.  
Push [(F-1)SCN], then [(F-2)SEL].  
When the scan detects a signal, the scan stops or  
pauses depending on the resume setting.  
To cancel the scan push [(F-1)SCN].  
Note: Two or more memory channels must be desig-  
nated as select memory channels for select memory  
scan to start.  
Priority watch  
Select VFO mode, then set a frequency.  
Close the squelch with [SQL].  
Set the desired memory channel as the watching  
channel.  
Select S2, then push [(F-2)PRI] to start the watch.  
Decimal point blinks while scanning.  
USB  
Select  
VFO mode  
S1  
3
5
7
9
20  
40  
60dB  
10  
VFO A  
Select watching  
channel  
CH  
PO  
5
S2 SCN  
PRI V/M  
When the scan detects a signal, the scan pauses  
for 10 sec. or until the signal disappears, depend-  
ing on the resume setting.  
F-2  
Push [(F-2)PRI].  
Note: The paused condition when detecting a signal  
differs depending on the scan resume condition.  
resume on: pauses for 10 sec.  
To cancel the scan push [(F-2)PRI].  
resume off: pauses until the signal disappears.  
44  
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6
REMOTE JACK (CI-V) INFORMATION  
DCI-V connection example  
9–15 V DC  
The transceiver can be connected through an option-  
al CT-17 CI-V LEVEL CONVERTER to a personal comput-  
er equipped with an RS-232C port. The Icom  
Communication interface-V (CI-V) controls the follow-  
ing functions of the transceiver.  
Up to four Icom CI-V transceivers or receivers can be  
connected to a personal computer equipped with an  
RS-232C port. See p. 55 for setting the CI-V condition  
using initial set mode.  
CT-1 7  
Personal  
computer  
IC-706MKIIG  
DData format  
The CI-V system can be operated using the following  
data formats. Data formats differ according to com-  
mand numbers. A data area is added for some com-  
mands.  
CONTROLLER TO IC-706MKIIG  
OK MESSAGE TO CONTROLLER  
FE FE 58 E0 Cn Sc Data area FD  
FE FE 58 E0 FB FD  
NG MESSAGE TO CONTROLLER  
IC-706MKIIG TO CONTROLLER  
FE FE 58 E0 FA FD  
FE FE E0 58 Cn Sc Data area FD  
45  
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REMOTE JACK (CI-V) INFORMATION 6  
COMMAND TABLE  
Cn Sc Description  
Cn Sc Description  
00  
01 xx  
02  
03  
04  
05  
Send frequency data  
Send mode data  
Read band edge frequencies  
Read display frequency  
Read display mode  
00 Scan stop  
01 Scan start  
00 Split OFF  
01 Split ON  
0E  
0F 10 Simplex mode  
11 Duplex mode  
12 Duplex + mode  
00 10 Hz TS  
Set frequency data  
00*1 Set LSB  
01*1 Set USB  
02*1 Set AM  
01 100 Hz TS  
02 1 kHz TS  
03 5 kHz TS  
06 03*1 Set CW  
04*1 Set RTTY  
05*1 Set FM  
04 9 kHz TS  
06*1 Set WFM  
10 05 10 kHz TS  
06 12.5 kHz TS  
07 20 kHz TS  
08 25 kHz TS  
09 100 kHz TS  
Set to VFO  
00 Set to VFO A  
07 01 Set to VFO B  
A0 VFO A=B  
B0 Switch VFO A and B  
11 xx  
ATT ON/OFF; 00=OFF; 20=ON  
Set to memory mode  
01 Read squelch condition  
08  
15  
mc*2 Mch  
02 Read S-meter level  
02 Preamp setting  
12 AGC setting  
09  
0A  
0B  
0C  
0D  
Memory write  
Memory to VFO  
Memory clear  
Read duplex offset frequency  
Set duplex offset frequency  
16 22 NB setting  
42 TONE setting  
43 TSQL setting  
44 COMP setting  
46 VOX setting  
47 BK-IN setting  
*1When wide or normal operation is available, add “00” for wide oper-  
ation or “01” for normal operation; when normal or narrow operation  
is available, add “00” for normal operation or “01” for narrow opera-  
tion; when wide, normal and narrow operation is available, add “00”  
for wide operation, “01” for normal operation and “02” for narrow  
operation.  
19 00 Read transceiver ID code  
*2Memory channel number 1A=0100/1b=0101, 2A=0102/2b=0103,  
3A=0104/3b=0105, C1=0106, C2=0107.  
46  
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7
SET MODE  
General  
Set mode is used for programming infrequently  
changed values or conditions of functions. The IC-  
706MKIIG has 2 separate set modes: quick set mode  
and initial set mode.  
DQuick set mode operation  
While power is ON, push [DISPLAY] for 2 sec.  
Quick set mode is selected and one of its items appears.  
Quick set mode items vary depending on the operating  
mode (SSB, FM, etc.) selected.  
Push [MENU] one or more times to select the  
desired item.  
[POWER]  
Main dial  
[Y]  
[Z]  
[M-CH]  
[M-CH] or [Y]/[Z] can also be used.  
Rotate the main dial to set the values or conditions  
for the selected item.  
[MENU]  
[DISPLAY]  
Repeat steps and to set other items.  
To exit quick set mode, push [DISPLAY] momentar-  
ily.  
[DISPLAY EXAMPLE: QUICK SET MODE]  
USB  
Value or  
condition  
S1  
3
5
7
9
20  
40  
60dB  
10  
PO  
5
Q1 RF POWER  
Item  
Item number  
DInitial set mode operation  
Push [POWER] for 2 sec. to turn power OFF.  
While pushing [LOCK] push [POWER] to turn power  
ON.  
Initial set mode is selected and one of its items appears.  
Push [MENU] one or more times to select the  
desired item.  
[POWER]  
Main dial  
[Y]  
[Z]  
[M-CH]  
[M-CH] or [Y]/[Z] can also be used.  
Rotate the main dial to set the values or conditions  
for the selected item.  
Repeat steps and to set other items.  
To exit initial set mode, push [POWER] for 2 sec. to  
turn power OFF.  
Push [POWER] to turn power ON again.  
The conditions selected in initial set mode are now effec-  
tive.  
[MENU]  
[LOCK]  
[DISPLAY EXAMPLE: INITIAL SET MODE]  
Value or  
condition  
Item  
MODE SELECT  
1
Item number  
47  
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SET MODE 7  
Quick set mode items  
Q1 RF POWER (all modes)  
The default is H (maximum power).  
This item adjusts the RF output power. The RF out-  
put power can be adjusted from L, 1 to 9 and H for  
indication, however, it can be adjusted continuously.  
Note that while adjusting the output  
power, the power meter is displayed  
automatically.  
Q2 MIC GAIN (SSB/AM/FM only)  
The default is 5.  
Note that while adjusting mic gain, the  
ALC meter is displayed automatically.  
This item adjusts microphone gain from 1 to 10 for  
indication, however, it can be adjusted continuously.  
Q2 CW PITCH (CW only)  
CW  
This item adjusts the CW pitch. CW pitch is  
adjustable from 300 to 900 Hz in 10 Hz steps.  
The default is 600 Hz.  
Q2 RTTY TONE (RTTY only)  
RTTY  
This item selects the RTTY tone. RTTY tone is tog-  
gled between 1275, 1615 and 2125 Hz.  
The default is 2125 Hz.  
Q3 VOX DELAY (SSB/AM/FM only)  
USB  
This item adjusts the VOX (Voice-activated Transmit)  
delay time. The delay time can be adjusted from 0 to  
2 sec. in 0.1 sec. units.  
The default is 1.0 seconds.  
Q3 BK-IN DELAY (CW only)  
CW  
This item adjusts break-in delay time for CW semi  
break-in operation. The delay time is selectable from  
2.0 to 13.0 (dots).  
The default is 7.5 dots.  
Q3 RTTY SHIFT (RTTY only)  
RTTY  
This item adjusts the RTTY shift. There are 3 selec-  
table values: 170, 200 and 425 Hz.  
The default is 170 Hz.  
Q4 VOX GAIN (SSB/AM/FM only)  
USB  
This item adjusts the VOX gain for the VOX (voice acti-  
vated transmit) function.  
The default is 5.  
Q4 RTTY KEYING (RTTY only)  
RTTY  
The default is “n,” normal.  
This item adjusts the RTTY keying. Normal or  
reverse keying can be selected.  
Normal  
: key open=mark  
Reverse : key open=space  
48  
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7
SET MODE  
Q4 CW PADDLE (CW only)  
CW  
This item adjusts the CW paddle type. Four selec-  
tions are available.  
The default is “n,” normal.  
•n  
•r  
buG  
: normal (for electronic keyer use)  
: reverse (for electronic keyer use)  
: When using the electronic key, key down  
produces a “dash,releasing the key auto-  
matically produces a “dot(s).”  
oFF  
ud  
: Turns OFF the electronic keyer (for  
straight key use)  
: For using the microphone’s [UP]/[DN]  
keys instead of the CW paddle.  
Q5 ANTI VOX (SSB/AM/FM only)  
USB  
This item adjusts the ANTI-VOX gain for the VOX  
(voice activated transmit) function.  
The default is 5.  
Q5 KEY SPEED (CW only)  
CW  
This item adjusts the CW key speed. The key speed  
can be selected from 6 to 60 wpm.  
The default is 20 wpm.  
Q6 CARRIER Frq (SSB only)  
USB  
This item adjusts the carrier frequency (BFO frequen-  
cy), allowing you to change the audio characteristics.  
Selectable values are –200 to +200 Hz in 10 Hz steps.  
The default is 0 Hz.  
Q6 RATIO (CW only)  
CW  
This item adjusts the CW key ratio (or weight). The  
ratio can be selected from 2.8 to 4.5.  
The default is 3.0.  
FM  
Q6 RPTR TONE (FM only)  
The default is 88.5 Hz.  
This item selects a subaudible tone for FM-T mode  
operation to access a repeater. There are 50 tones  
available from 67.0 Hz to 254.1 Hz (see table at  
right).  
Available subaudible tones  
Unit: Hz  
67.0 79.9  
69.3 82.5  
94.8 110.9 131.8 156.7 171.3 186.2 203.5 229.1  
97.4 114.8 136.5 159.8 173.8 189.9 206.5 233.6  
71.9 85.4 100.0 118.8 141.3 162.2 177.3 192.8 210.7 241.8  
74.4 88.5 103.5 123.0 146.2 165.5 179.9 196.6 218.1 250.3  
77.0 91.5 107.2 127.3 151.4 167.9 183.5 199.5 225.7 254.1  
Q7 TONE SQL (FM only)  
FM  
The default is 88.5 Hz.  
This item adjusts sets a subaudible tone for tone  
squelch use. (the same subaudible tone frequencies  
as for repeater operation are available—see above).  
49  
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SET MODE 7  
Q8 RPTR-T SCN (repeater tone scan)  
FM  
The default is 88.5 Hz.  
During repeater operation, you can detect the tone  
frequency necessary to open a repeater (see p. 30).  
Q8 T-SQL SCN (tone squelch tone scan)  
FM  
The default is 88.5 Hz.  
During tone squelch operation, you can detect the  
tone frequency necessary to communicate using  
tone squelch (see p. 31).  
Initial set mode items  
1 MODE SELECT (all modes)  
This item is available in all modes, and allows you to  
simplify operation by inhibiting the selection of  
unneeded operating modes during normal operation.  
For example if you are operating mobile and only  
plan on using FM and AM modes, use “MODE  
SELECT” to inhibit access to all other modes (SSB,  
CW, RTTY, WFM), thereby making selection of AM or  
FM quick and easy.  
The default is on for all operating  
modes. To toggle an operating mode  
on or off, push (or push and hold)  
[MODE] one or more times until the  
desired mode is displayed, then rotate  
the main dial to set on or off.  
2 BEEP(confirmation beep)  
A beep sounds each time a switch is pushed to con-  
firm it. This function can be turned OFF for silent  
operation.  
Confirmation beep ON  
(default)  
Confirmation beep OFF  
3 BAND BEEP(band beep)  
A beep sounds when an operating frequency enters  
or exits a transmit frequency range. This functions  
independent of the confirmation beep setting (above).  
Band beep ON  
(default)  
Band beep OFF  
4 BACK LIGHT (display backlighting)  
The function display backlighting can be set to high,  
low or OFF to suit ambient lighting.  
Display backlighting set to  
high (default).  
Display backlighting set to  
low.  
5 KEY LIGHT (key/switch backlighting)  
The key/switch backlighting can be set to high, low or  
OFF to suit ambient lighting.  
Display backlighting set to  
high (default).  
Display backlighting set to  
low.  
50  
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7
SET MODE  
6 AUTO OFF (auto power OFF)  
The auto power OFF function can be used to auto-  
matically turn the transceiver OFF after a specified  
time of operation. This item can be set to 30 min., 60  
min., 90 min., 120 min., or OFF.  
Auto power OFF  
deactivates. (default)  
Auto power OFF set to  
20 min.  
7 RF/SQL (SQL/AUTO/RF•SQL)  
The [RF/SQL] control can be set as the squelch con-  
trol (default), the RF/squelch control (USA version  
default) or automatic (acts as squelch in  
FM/WFM/AM modes; as RF in SSB/CW/RTTY  
modes). (See p. 22)  
The [RF/SQL] control  
functions as RF gain  
control only.  
The [RF/SQL] control  
functions as squelch  
control only.  
8 SUBDIAL (Subdial function)  
When this item is set to “rit,pushing [RIT/SUB]  
turns the RIT function ON (lights red)—rotating [M-  
CH] changes the RIT frequency; when this item is set  
to “Freq,pushing [RIT/SUB] turns the sub dial func-  
tion ON (lights green)—rotating [M-CH] changes the  
operating frequency. Note that in FM, WFM and AM  
modes, pushing [RIT/SUB] always selects the sub  
dial function (lights green), regardless of this setting.  
Pushing [RIT/SUB]  
selects the RIT function  
(default).  
Pushing [RIT/SUB]  
selects the sub dial function.  
9 OPT. FIL 1 (optional filter)  
When an optional filter is installed, this selection is  
necessary, otherwise the filters cannot be selected.  
Selections available are FL-100, FL-101, FL-103, FL-  
223, FL-232 and none (default). See p. 22 for usable  
filters for each mode and see p. 60 for filter installa-  
tion.  
No filters are selected  
(default).  
FL-223 (for LSB/USB mode)  
is selected.  
10 OPT. FIL 2 (optional filter)  
When an optional filter is installed, this selection is  
necessary, otherwise the filters cannot be selected.  
Selections available are FL-100, FL-101, FL-103, FL-  
223, FL-232 and none (default). See p. 22 for usable  
filters for each mode and see p. 60 for filter installa-  
tion.  
No filters are selected  
(default).  
FL-223 (for LSB/USB mode)  
is selected.  
11 PEAK HOLD (peak hold)  
When the peak hold function is ON, the highest acti-  
vated segment of the meter remains visible for 0.5  
sec.; when OFF, the meter functions normally.  
Peak hold ON  
(default)  
Peak hold OFF  
51  
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SET MODE 7  
12 QUICK SPLIT (quick split function)  
When this item is set to ON, pushing [SPL] for 2 sec.  
sets the undisplayed VFO frequency to the displayed  
VFO frequency plus the split offset or duplex offset,  
and activates split operation.  
Quick split function ON  
(default).  
Quick split function OFF.  
13 SPLIT LOCK (split lock)  
When this item is ON the main dial can be used to  
adjust the transmit frequency (XFC) even while the  
lock function is activated.  
Split lock function OFF  
(default)  
Split lock function ON  
14 SPL OFFSET (split offset)  
This item sets the offset (difference between transmit  
and receive frequencies) for the quick split function.  
Note that this setting is not valid in FM/WFM modes.  
Default is 0.100 MHz.  
15 DUP HF (duplex offset)  
This item sets the offset for the duplex function when  
operating on the HF bands.  
Default is 0.100 MHz.  
16 DUP 50M (duplex offset)  
This item sets the offset for the duplex function when  
operating on the 50 MHz band.  
Default is 0.500 MHz.  
17 DUP 144M (duplex offset)  
This item sets the offset for the duplex function when  
operating on the 144 MHz band.  
Default is 0.600 MHz.  
18 DUP 430M (duplex offset)  
This item sets the offset for the duplex function when  
operating on the 430 MHz band.  
Default is 5.000 MHz.  
19 1TOUCH RPTR (one touch repeater)  
This item sets the offset direction when using the  
one-touch repeater function. +duplex or –duplex can  
be selected.  
DUP  
DUP  
Duplex direction is set  
to –duplex.  
Duplex direction is set to  
+duplex.  
52  
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7
SET MODE  
20 AUTO RPTR (auto repeater)  
When this item is set to “on 1”, the tone encoder is  
not set when the auto repeater is activated; when set  
to “on 2” the auto repeater function also sets the tone  
encoder on.  
Auto repeater function OFF  
(default).  
Auto repeater function ON,  
tone encoder OFF.  
21 SCAN RESUME (scan resume)  
This item sets the scan resume function ON or OFF.  
ON: scan resumes 10 sec. after stopping on a signal  
(or 2 sec. after a signal disappears); OFF: scan does  
not resume after stopping on a signal. For the priori-  
ty watch, setting to OFF pauses the watch until sig-  
nal disappears and scan resumes.  
Scan resume function is  
turned ON (default).  
Scan resume function is  
turned OFF.  
22 SCAN SPEED (scan speed)  
This item sets the rate at which channels or frequen-  
cies are scanned during scan operations. High or low  
can be selected.  
Scan speed is set to high  
(default).  
Scan speed is set to low.  
23 U/D SPEED (up/down speed)  
This item sets the rate at which frequencies are  
scanned through when the [UP]/[DN] switches are  
pushed and held. High or low can be selected.  
Up/down speed is set to  
high (default).  
Up/down speed is set to low.  
24 AM NB (Noise blanker in AM mode)  
When this item is set to ON, the noise blanker func-  
tion is available in AM mode. This is useful when  
communicating in AM mode (the noise blanker func-  
tion should not be used when listening to regular AM  
broadcasts as it may degrade the received audio).  
Noise blanker available  
(default)  
Noise blanker not available  
25 PAD CH (available memo pads)  
This item sets the number of memo pad channels  
available. 5 or 10 memo pads can be set.  
5 memo pads are available  
(default).  
10 memo pads are available.  
26 PWR ON CHK (Power on check)  
When this item is set to “on,the set output power is  
briefly displayed when turning power ON (RIT and  
auto power off settings are also displayed if activat-  
ed); when turned “oFF,” the display goes directly to  
frequency indication at power ON.  
Power on check ON  
(default)  
Power on check OFF  
53  
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SET MODE 7  
27 A-TUNE STRT (auto tuner start)  
The optional AT-180 ANTENNA TUNER has an auto-  
matic start capability which starts tuning if the SWR  
is higher than 1.5–3.  
Auto tune function OFF  
(default).  
Auto tune function ON.  
When “oFF” is selected, the tuner remains OFF even  
when the SWR is poor (1.5–3).  
Note: Even when “on” is selected, automatic tune  
does not start for the 50 MHz band.  
When “on” is selected, automatic tune starts even  
when the tuner is turned OFF.  
28 PTT TUNE (PTT tune function)  
When an optional AH-4 ANTENNA TUNER is connect-  
ed, tuning can be started automatically at the  
moment the PTT is pushed.  
Tuning starts when pushing [PTT]  
on a new frequency.  
Tuning starts only when  
[TUNER] is pushed (default)  
.
29 9600 MODE (Data socket speed)  
This is used to change the communications speed  
packet operation. The data socket can be set to 1200  
or 9600 baud.  
Default is 9600 baud.  
30 VSEND SEL (ACC socket output)  
“on”:  
VSEND is for 144/430 MHz; HSEND is for  
the HF/50 MHz  
The default is VSEND is for the 144/430 MHz band;  
HSEND is for the HF/50 MHz band.  
“U only”: VSEND is for 430 MHz; HSEND is for  
HF/50/144 MHz  
“oFF”: VSEND is not used; HSEND is for all  
bands.  
(voice synthesizer language)  
31 SPEECH LANG  
When the optional UT-102 VOICE SYNTHESIZER UNIT is  
installed, you can select between English and  
Japanese as the language.  
Voice synthesizer functions  
in English (default).  
Voice synthesizer functions  
in Japanese.  
(voice synthesizer speed)  
32 SPEECH SPD  
When the optional UT-102 VOICE SYNTHESIZER UNIT is  
installed, you can select between faster or slower  
synthesizer output.  
Voice synthesizer output  
is faster (default).  
Voice synthesizer output  
is slower.  
54  
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7
SET MODE  
33 S-LVL SPCH(S-level speech)  
When an optional UT-102 SPEECH SYNTHESIZER UNIT  
is installed, the synthesizer can be set to read out the  
frequency/mode only, or both the frequency/mode  
and S-meter level.  
Voice synthesizer reads out  
both the frequency/mode  
and S-meter level (default).  
Voice synthesizer reads out  
the frequency/mode only.  
34 CI-V ADDRES (CI-V address)  
To distinguish equipment, each CI-V transceiver has  
its own Icom standard address in hexadecimal code.  
The IC-706MKIIG’s address is 4EH.  
Address set to 58H  
(default).  
Address set to 7FH.  
When 2 or more IC-706MKIIG’s are connected to an  
optional CT-17 CI-V LEVEL CONVERTER, rotate the  
main dial to select a different address for each IC-  
706MKIIG in the range 01H to 7FH.  
35 CI-V BAUD (CI-V data rate)  
This item sets the data transfer rate. When “Auto” is  
selected, the baud rate is automatically set according  
to the connected controller or remote controller.  
Auto baud rate  
(default)  
19200 bps  
36 CI-V TRN (CI-V transceive)  
Transceive operation is possible with the IC-  
706MKIIG connected to other Icom HF transceivers  
or receivers. When “on” is selected, changing the  
frequency, operating mode, etc. on the IC-706MKIIG  
automatically changes those of connected trans-  
ceivers (or receivers) and vice versa.  
Transceive ON  
(default)  
Transceive OFF  
37 CI-V 731 (CI-V operating fre-  
quency data length)  
When connecting the IC-706MKIIG to the IC-735 for  
transceive operation, you must change the operating  
frequency data length to 4 bytes.  
Frequency data set to  
5 bytes (default).  
Frequency data set to  
4 bytes.  
This item MUST be set to “on” only when operating trans-  
ceiver with the IC-735.  
55  
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MAINTENANCE  
8
Fuse replacement  
DC POWER CABLE FUSE REPLACEMENT  
If a fuse blows or the transceiver stops functioning, try  
to find the source of the problem, and replace the  
damaged fuse with a new, rated fuse.  
30 A fuse  
Caution: Disconnect the DC power cable from the  
transceiver when changing a fuse.  
The IC-706MKIIG has 2 types of fuses installed for  
transceiver protection.  
DC power cable fuses ...................................... 30 A  
Circuitry fuse ............................. F.G.M.B. 125 V 4 A  
CIRCUITRY FUSE REPLACEMENT  
The 13.8 V DC from the DC power cable is applied to  
all units in the IC-706MKIIG, except for the power  
amplifier, through the circuitry fuse. This fuse is  
installed in the PA unit.  
4 A Fuse  
Memory backup  
All of the CPU’s memory is backed up by an EEP-  
ROM (Electronically-Erasable Programmable Read-  
Only Memory). All data you set, such as VFO, mem-  
ory, set mode contents, etc. is stored in this EEP-  
ROM. There is no internal lithium battery.  
Cleaning  
If the transceiver becomes dusty or dirty,  
wipe it clean with a dry, soft cloth.  
AVOID the use of strong chemical solvents  
such as thinner, benzine or alcohol to clean  
the transceiver. These may damage the  
transceiver’s surfaces.  
56  
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9
TROUBLESHOOTING  
The following chart is designed to help you correct  
problems which are not equipment malfunctions.  
If you are unable to locate the cause of a problem or  
solve it through the use of this chart, contact your  
nearest Icom Dealer or Service Center.  
PROBLEM  
POSSIBLE CAUSE  
SOLUTION  
REF.  
Power does not come  
on when the [POWER]  
switch is pushed.  
DC power cable is improperly  
connected.  
Reconnect the power cable correctly. p. 13  
Fuse is blown.  
Check for the cause, then replace the p. 56  
fuse with a spare one.  
(Fuses are installed in two places. One is  
installed in the DC power cable and the  
other is installed in the PA unit.  
Battery is exhausted if you are using  
a 12 V battery as the power source.  
Check the battery voltage with the  
[POWER] pushed IN.  
p. 1  
No sound comes from  
the speaker.  
Volume level is set too low.  
Rotate [AF] clockwise to obtain a suit-  
able listening level.  
p. 1  
The squelch is closed.  
Rotate [SQL] counterclockwise to  
open the squelch.  
The transceiver is in the transmitting  
condition.  
Release [PTT] on the microphone or  
check the SEND line of an external  
unit, if connected.  
p. 12  
p. 12  
An external speaker or headphones  
are connected.  
Check the external speaker or head-  
phone plug connection.  
Check the speaker ON/OFF switch or  
speaker A/B switch, when an optional  
SP-20 EXTERNAL SPEAKER is in use.  
Sensitivity is low.  
The antenna is not connected properly.  
The antenna feed line is cut or shorted.  
Reconnect to the antenna connector.  
Check the feed line and correct any  
improper conditions.  
The antenna for another band is  
selected.  
Select an antenna suitable for the  
operating frequency.  
p. 14  
Make sure that [ANT1] is used for  
frequencies less than 60 MHz and  
[ANT2] is used for frequencies of 60  
MHz and above.  
The antenna is not properly tuned.  
The attenuator function is activated.  
Push [TUNE] to manually tune the  
antenna.  
pgs. 27,  
28  
Push [ATT] to turn the function OFF.  
Select a suitable operating mode.  
p. 21  
p. 19  
The operating mode is not selected  
correctly.  
Receive audio is distor-  
ted.  
The [SHIFT] control is set off-center.  
Noise blanker function is activated.  
Preamp is activated.  
p. 20  
p. 21  
p. 21  
Set [SHIFT] to the center position.  
Push [NB] to turn the function OFF.  
Receive signal is distor-  
ted with strong signals.  
Push [P.AMP] to turn the function  
OFF.  
57  
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TROUBLESHOOTING 9  
PROBLEM  
POSSIBLE CAUSE  
SOLUTION  
REF.  
Transmitting is impossi-  
ble.  
The operating frequency is not set to  
a ham band.  
Set the frequency to a ham band.  
p. 17  
p. 44  
p. 44  
Power is set to a lower power than  
maximum.  
Set the output power in quick set  
mode.  
Output power is too low.  
Microphone gain is set too low.  
Set microphone gain to a suitable  
position using quick set mode.  
The antenna is not connected properly.  
The antenna feed line is cut or shorted.  
Reconnect the antenna connector.  
Check the feed line and correct any  
improper conditions.  
p. 14  
An antenna for another band is selec-  
ted.  
Select an antenna suitable for the op-  
erating frequency.  
pgs. 27,  
28  
The antenna is not properly tuned.  
Push [TUNE] to manually tune the  
antenna when an optional antennal  
tuner is connected.  
p. 20  
p. 29  
No contact possible with  
other stations.  
RIT function is activated.  
Split function is activated.  
Push RIT to turn the function OFF.  
Push [SPLIT] to turn the function OFF.  
Push [DUP] to turn the function ON  
.
p. 29  
Repeater cannot be ac-  
cessed.  
Split function is not activated.  
Set the proper frequencies into VFO p. 17  
A and B or into one of the memory  
channels.  
An incorrect transmit frequency is set.  
Use [TON] to select FM-T.  
p. 30  
Subaudible tone encoder is OFF and  
repeater requires a tone for access.  
Program the required frequency using p. 49  
quick set mode.  
Programmed subaudible tone fre-  
quency is wrong.  
Microphone gain is set too high.  
Set gain in quick set mode.  
p. 48  
Transmitted signals are  
distorted.  
[COMP LEVEL] is rotated too far  
clockwise with the speech compres-  
sor ON.  
Set [COMP LEVEL] to a suitable pos-  
ition.  
p. 5  
Displayed  
does not change proper-  
ly.  
frequency  
The dial lock function is activated.  
The internal CPU has malfunctioned.  
Push [LOCK] to deactivate the func-  
tion.  
p. 2  
Reset the CPU.  
p. 15  
(While pushing [UP] and [DN] push [POW-  
ER] to turn power ON.  
p. 23  
p. 44  
Programmed scan does  
not stop.  
Squelch is open.  
Set squelch to the threshold position.  
The same frequencies have been  
programmed in scan edge memory  
channels.  
Programm different frequencies into  
scan edge memory channels.  
Programmed scan does  
not start.  
p. 41  
p. 44  
2 or more memory channels have not  
been programmed.  
Program 2 or more memory chan-  
nels.  
Memory scan does not  
start.  
2 or more memory channels have not  
been designated as select channels.  
Designate 2 or more memory chan-  
nels as select channels for the scan.  
Memory select scan  
does not start.  
58  
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10  
OPTIONAL INSTALLATIONS/SETTINGS  
Opening the transceiver case  
To remove the transceiver case unscrew the 10  
screws (5 in the top panel and 5 in the bottom panel)  
as shown in the diagram below.  
Caution: Disconnect the DC power cable from  
the transceiver before performing any work on the  
transceiver.  
UT-102 VOICE SYNTHESIZER UNIT  
The UT-102 announces the accessed band’s fre-  
quency, mode, etc. (S-meter level can also be  
announced—p. 55) in a clear, electronically generat-  
ed voice, in English (or Japanese).  
Remove the top cover as shown above.  
Connect the UT-102 as shown in the diagram at  
right (label side up).  
U
T
1
     2
Replace the top cover.  
59  
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OPTIONAL INSTALLATIONS/SETTINGS 10  
CR-282 HIGH-STABILITY CRYSTAL UNIT  
By installing the CR-282, the total frequency stability  
of the transceiver will be improved.  
CR-282 frequency stability: ±0.5 ppm  
(–30°C to +60°C;  
–22°F to +140°F)  
Remove the bottom cover as shown on the oppo-  
site page.  
Remove the 5 screws and 2 flat cables holding the  
PLL unit in place.  
Remove the existing crystal unit.  
Put the CR-282 in the space available as shown in  
the diagram.  
Adjust the reference frequency at L601 (also R602  
and L623 if necessary) using a frequency counter  
(60.00000 MHz).  
Return the shield case and bottom cover to their  
original positions.  
PLL unit (bottom)  
ribbon  
cable  
existing  
crystal  
L623  
Reference freq. c  
(60.00000 MHz)  
ribbon  
cable  
CR-282 L601  
R602  
IF filters  
Several IF filters are available for the IC-706MKIIG.  
Choose a filter most appropriate to your operating  
needs.  
Remove the top cover as shown on the previous  
page.  
Install the desired filter as shown in the diagram  
below.  
These filters can be installed in either direction.  
Replace the top cover.  
Note: After filter installation, specify the installed filter  
using initial set mode (items 9, 10). Otherwise, the  
installed filter will not function properly.  
FL-100 CW NARROW FILTER  
FL-101 CW NARROW FILTER  
FL-103 SSB WIDE FILTER  
FL-223 SSB NARROW FILTER  
FL-232 CW/RTTY NARROW FILTER  
500 Hz/–6 dB  
250 Hz/–6 dB  
2.8 kHz/–6 dB  
1.9 kHz/–6 dB  
350 Hz/–6 dB  
Filter  
60  
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10  
OPTIONAL INSTALLATIONS/SETTINGS  
UT-106 DSP RECEIVER UNIT  
DInstallation  
Open the transceiver case as shown on p. 59.  
Remove the 4-pin connector (P251) from J1413 on  
the MAIN unit (top side) and plug it into J1 of the  
UT-106 on the PLL unit (bottom side).  
MAIN unit  
Remove the J1431 connector  
from the PLL unit and replace  
with the UT-106 connector  
P1  
J1431  
Plug the 4-pin connector (P1) from the UT-106 into  
J1413 on the MAIN unit.  
Plug the supplied ribbon cable into J3 on the UT-  
106 and J253 on the PLL unit.  
Be careful of the orientation of the ribbon cable.  
Attach the UT-106 to the PLL unit, using the exist-  
ing guide for alignment, as illustrated at right.  
Reassemble the transceiver.  
Be careful of the orientation  
when connecting the  
ribbon cable.  
UT-106  
DOperation  
Refer to the instructions supplied with the UT-106 for  
operating details.  
J3  
J1  
PLL unit  
P251  
P253  
P1  
unit position  
MB-72 CARRYING HANDLE  
The optional MB-72 CARRYING HANDLE is convenient  
when carrying the transceiver for DX’peditions, field  
operation, etc.  
feet and additionally attach 2 more supplied screws  
(including rubber feet) as shown below.  
When replacing the 2 screws at the rear, be sure to  
squeeze the top and bottom covers together to ensure  
proper alignment.  
Attach the MB-72 to the left side of the transceiver  
as shown below.  
Remove the 2 screws from the right side of the  
transceiver as shown below.  
Replace those with 2 supplied screws plus rubber  
carrying  
handle  
rubber  
feet  
61  
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OPTIONAL INSTALLATIONS/SETTINGS 10  
AT-180 internal switch description  
The optional AT-180 has 3 operating conditions for  
HF band operation. Select a suitable condition  
according to your antenna system.  
Remove the top cover of the AT-180.  
Set the tuner switches to the desired positions  
according to the table below.  
SW Position  
Operation  
AT-180 inside top cover  
The tuner operating condition is set by S2  
described below.  
A
(default)  
THROUGH INHIBIT  
The tuner tunes the antenna even when  
the antenna has poor SWR (up to VSWR  
3:1 after tuning). In this case, manual tun-  
ing is necessary each time you change the  
frequency although the tuner automatically  
starts tuning when the VSWR is higher  
than 3:1. This setting is called “through  
inhibit,” however, the tuner is set to  
through” if the VSWR is higher than 3:1  
after tuning.  
S2  
S1  
D C B A  
B
C
TUNER SENSITIVE CONDITION  
The tuner tunes each time you transmit  
(except SSB mode). Therefore, the lowest  
SWR is obtained at any given time.  
For SSB mode, the same condition as the  
“D” position.  
NORMAL CONDITION  
The tuner tunes when the SWR is higher  
than 1.5:1. Therefore, the tuner activates  
only when tuning is necessary.  
D
(default)  
Connector information for ACC(2) socket  
Specifications for the AT-180  
Frequency coverage : 1.954 MHz  
2
5
4
Input impedance  
Maximum input  
power  
: 50 Ω  
: 120 W  
3
1
ACC 2  
6
7
Minimum tuning  
power  
: 8 W  
Matching impedance : 16.7–150 (HF band)  
PIN NO./  
NAME  
DESCRIPTION  
range  
20125 (50 MHz band)  
: Less than SWR 1.5:1  
: Less than 1.0 dB  
Tuning accuracy  
Insertion loss  
Regulated 8 V output.  
(10 mA max.)  
8 V  
(after tuning)  
: 13.8 V DC/1 A (supplied from  
the transceiver’s ACC socket)  
GND  
Connects to ground.  
Power supply  
requirements  
Input/output pin.  
Goes to ground when transmitting (20 mA  
max). When grounded, transmits.  
SEND  
BAND  
Dimensions (mm/in) : 167(W)×58.6(H)×225(D)  
6916(W)×2517(H)×878(D)  
Band voltage output.  
(Varies with amateur band; 0 to 8.0 V).  
Weight  
: 2.4 kg; 5 lb 4 oz  
Supplied accessories: coaxial cable (1 m),  
ACC cable (DIN 13 pins)  
ALC  
NC  
ALC output voltage (–4 to 0 V).  
No connection.  
13.8V  
13.8 V output when power is ON (1 A max).  
62  
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11  
INTERNAL VIEWS  
DTop view  
Caution:  
The transceiver has been  
thoroughly tested and  
adjusted at the factory  
before being shipped. The  
transceiver warranty does  
not cover any problems  
caused by unauthorized  
internal adjustment.  
The internal speaker has  
been removed in this  
diagram for illustration  
purposes.  
FILTER unit  
430 MHz Tx power adj.  
144 MHz Tx power adj.  
50 MHz Tx power adj.  
HF Tx power adj.  
FM deviation adj.  
MAIN unit  
AM Tx carrier adj.  
ID APC adj.  
NB sencitivity adj.  
DBottom view  
144/430 MHz Final amplifier  
(SRFJ7044)  
HF Final amplifier  
(SRFJ7044 x 2)  
PA unit  
Optional crystal (CR-282)  
Reference freq. check point  
(60.000 MHz)  
PLL unit  
Reference freq. adj. (L623)  
Reference freq. adj. (R602)  
Reference freq. adj. (L601)  
(when optional crystal  
is installed. See p. 60)  
63  
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OPTIONS  
12  
IC-PW1 HF + 50 MHz 1 kW LINEAR AMPLIFIER  
AT-180 HF/50 MHz AUTOMATIC  
ANTENNA TUNER  
Full-duty 1 kW linear amplifier  
including an automatic antenna  
tuner. Has automatic tuning and  
band selection capability. Full  
break-in (QSK) operation is pos-  
sible. The amplifier/power supply  
unit and the remote control unit  
are separated. The OPC-599 is  
necessary to connect the IC-  
706MKIIG to the IC-PW1.  
Fully automatic antenna tuner with preset  
memories for each 100 kHz. Unique “auto-  
matic tuner on” function is available. See  
p. 62 for AT-180 specifications.  
AH-4 HF AUTOMATIC ANTENNA  
AH-2b ANTENNA ELEMENT  
EX-627 AUTOMATIC ANTENNA  
TUNER  
SELECTOR  
A 2.5 m long antenna  
element for mobile  
operation with the  
AH-3.  
Frequency  
coverage  
Specially designed to tune a long wire  
antenna for portable or mobile HF/50 MHz  
operation. The “PTT tune” function pro-  
vides simple operation.  
Automatically selects the antenna for the  
selected HF ham band. Manual selection  
is possible for the 50 MHz band.  
3.5–28 MHz band  
with the AH-3  
Input power rating: 150 W  
Max. input power:100 W PEP  
PS-85 DC POWER SUPPLY  
SM-8 DESKTOP MICROPHONE  
SM-20 DESKTOP MICROPHONE  
Including 2 connection cables for simulta-  
neous connection of 2 transceivers. Has  
[UP]/[DOWN] switches. The OPC-589 is  
necessary to use this microphone.  
Light weight switching regulator system  
power supply.  
Output voltage: 13.8 V DC  
Max. current drain: 20 A  
Includes [UP]/[DOWN] switches and a low  
cut function. The OPC-589 is necessary to  
use this microphone.  
MB-62 MOBILE MOUNTING  
MB-63 MOUNTING BRACKET  
MB-65 MOUNTING BASE  
BRACKET  
Allows you to conveniently vehicle-mount  
the front panel of the IC-706MKIIG. An  
MB-63 must be used in combination with  
the MB-65.  
Mounts the transceiver main body, with or  
without the front panel, inside a vehicle.  
Metal plate for attaching the front panel to  
a wall or other such flat surface.  
64  
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12  
OPTIONS  
SP-7 EXTERNAL SPEAKER  
SP-10 EXTERNAL SPEAKER  
SP-12 EXTERNAL SPEAKER  
SP-20 EXTERNAL SPEAKER  
SP-12  
SP-10  
Equipped with 4 types of audio filters, a  
headphone jack and can be connected to 2  
transceivers.  
Compact speaker for base station opera-  
tion. Height can be adjusted for your con-  
venience.  
External speakers suitable for mobile oper-  
ation.  
Input impedance:8 Ω  
Max. input power:5 W  
SP-12:Slim-type; 8 /3 W  
SP-10:Compact-type; 4 /5 W  
Input impedance:8 Ω  
Max. input power:5 W  
SP-21 EXTERNAL SPEAKER  
CT-16 SATELLITE INTERFACE  
CT-17 CI-V LEVEL CONVERTER  
UNIT  
UNIT  
For remote transceiver control using a per-  
sonal computer equipped with an RS-232C  
port. You can change frequencies, operat-  
ing mode, memory channels, etc., via your  
computer.  
External speaker designed for base station  
operation.  
Input impedance:8 Ω  
Max. input power:5 W  
Easy tuning when connecting another Icom  
VHF transceiver for instant satellite com-  
munications.  
OPC-581 SEPARATION CABLE  
OPC-587 SEPARATION CABLE  
OPC-589 MICROPHONE ADAPTER  
CABLE  
Provide front panel detached operation for  
mobile installations or compact transceiver  
operation.  
OPC-581: 3.5 m (11.5 ft)  
OPC-587: 5 m (16.4 ft)  
Conversion between 8-pin modular and 8-  
pin metal connector for using a desktop  
microphone with the IC-706MKIIG.  
CR-282 HIGH-STABILITY CRYSTAL UNIT  
Contains a temperature-compensating oven heater and crystal unit  
for frequency stability.  
OPC-742 ACC 13-PIN CABLE  
Required when using both the AT-180 and a 2 m linear  
amplifier.  
Frequency stability:±0.5 ppm (–10°C to +60°C; +14°F to +140°F)  
MB-72 CARRYING HANDLE  
FL-100 CW NARROW FILTER (500 Hz/–6 dB)  
FL-101 CW NARROW FILTER (250 Hz/–6 dB)  
FL-103 SSB WIDE FILTER (2.8 kHz/–6 dB)  
FL-223 SSB NARROW FILTER (1.9 kHz/–6 dB)  
FL-232 CW/RTTY NARROW FILTER (350 Hz/–6 dB)  
Two of the above 5 filters can be installed at one time.  
HM-103 HAND MICROPHONE  
Convenient when carrying the transceiver.  
UT-102 VOICE SYNTHESIZER UNIT  
UT-106 DSP RECEIVE UNIT  
Standard hand microphone.  
OPC-599 ADAPTER CABLE  
13-pin, ACC connector to 7-pin + 8-pin ACC connector.  
65  
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SPECIFICATIONS  
13  
GENERAL  
Frequency coverage : Receive  
RECEIVER  
Receive system  
:
30 kHz199.999999 MHz*  
400–470.000 MHz*  
Transmit  
SSB, CW, AM, RTTY Double-conversion superheterodyne  
WFM  
FM  
Triple-conversion superheterodyne  
1.8001.99999 MHz*  
3.5003.9999 MHz*  
7.0007.300 MHz*  
10.10010.150 MHz  
14.00014.350 MHz  
18.06818.168 MHz  
21.00021.450 MHz  
24.89024.990 MHz  
28.00029.700 MHz  
50.00054.000 MHz*  
144.000148.000 MHz*  
430.000450.000 MHz*  
*Depending on version.  
: SSB, CW, AM, FM, WFM, RTTY  
(WFM is for receive only)  
Intermediate frequencies:  
MODE  
SSB  
AM  
1st  
2nd  
3rd  
69.0115 MHz  
69.0100 MHz  
69.0115 MHz  
69.0106 MHz  
69.0105 MHz  
69.0115 MHz  
69.0100 MHz  
9.0115 MHz  
9.0100 MHz  
9.0115 MHz  
9.0106 MHz  
9.0105 MHz  
9.0115 MHz  
9.0100 MHz  
AM-N  
CW  
RTTY  
FM  
455 kHz  
455 kHz  
FM-N  
WFM  
70.7000 MHz 10.7000 MHz  
Mode  
Sensitivity (pre-amp ON):  
Number of memory : 107 (split memory: 99; scan edges: 6;  
channels call channels: 2)  
Antenna connector : SO-239×2 (for HF/50 MHz and  
144/430 MHz)/50 Ω  
Usable temperature : –10°C to +60°C (+14°F to +140°F)  
range  
Frequency stability : Less than ±7 ppm from 1 min. to  
60 min. after power ON. After that,  
rate of stability change is less than  
±1 ppm/hr. at +25°C (+77°F).  
Frequency  
range  
SSB/CW  
10 dB S/N  
AM  
FM  
WFM  
10 dB S/N 12 dB SINAD 12 dB SINAD  
0.5–1.8 MHz  
1.8–28 MHz  
28–29.7 MHz  
13 µV  
0.15 µV  
2.0 µV  
0.5 µV  
0.25 µV  
50 MHz band 0.12 µV  
1.0 µV  
76–108 MHz  
10.0 µV  
144/430 MHz  
bands  
Temperature fluctuations (0°C to  
+50°C; +32°F to +122°F) less than  
± 5 ppm.  
0.11 µV  
1.0 µV  
0.18 µV  
Squelch sensitivity (threshold; preamp ON) :  
Power supply  
requirement  
Current drain  
(at 13.8 V DC)  
: 13.8 V DC ±15% (negative ground)  
SSB  
FM  
Selectivity*  
Less than 5.6 µV  
Less than 0.3 µV  
: Transmit  
Receive squelched  
max. audio  
20 A  
1.8 A  
2.0 A  
:
SSB, CW, RTTY  
More than 3.0 kHz/–6 dB  
Less than 4.8 kHz/–60 dB  
More than 8.0 kHz/–6 dB  
Less than 30.0 kHz/–40 dB  
More than 12.0 kHz/–6 dB  
Less than 30.0 kHz/–60 dB  
*Without optional filter and with  
mid band selected.  
Dimensions  
: 167(W)×58(H)×200(D) mm  
6916(W)×2516(H)×778(D) in  
(projections not included)  
: 2.45 kg (5 lb 6 oz)  
: 2-conductor 3.5 (d) mm (18˝)/8 Ω  
: 13-pin  
AM/FM-N  
FM  
Weight  
CI-V connector  
ACC connector  
Spurious and image rejection ratio:  
TRANSMITTER  
Output power  
SSB, CW, FM, RTTY 5100 W (1.8–50 MHz bands)  
550 W (144 MHz band)  
HF  
More than 70 dB  
:
50 MHz  
144/430 MHz  
More than 65 dB (except IF through)  
More than 65 dB  
Audio output power : More than 2.0 W at 10% distortion  
2–20 W (430 MHz band)  
with an 8 load  
AM  
2–40 W (1.8–50 MHz bands)  
220 W (144 MHz band)  
2–8 W (430 MHz band)  
RIT variable range : ±9.99 kHz max.  
PHONES connector : 3-conductor 3.5 (d) mm (18˝)/8 Ω  
EXT SP connector : 2-conductor 3.5 (d) mm (18˝)/8 Ω  
Modulation system  
:
SSB  
AM  
FM  
Balanced modulation  
Low level modulation  
Variable reactance modulation  
Spurious emissions : Less than 60 dB*  
*spurious freq.  
: below 30 MHz: –50 dB (typ.);  
above 50 MHz: –60 dB (typ.).  
Carrier suppression : More than 40 dB  
Unwanted sideband : More than 50 dB  
Microphone  
connector  
KEY connector  
RTTY connector  
: 8-pin modular jack (600 )  
: 3-conductor 6.35 (d) mm (14")  
: 3-conductor 3.5 (d) mm (18")  
66  
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14  
MENU GUIDE  
+ power ON  
LOCK  
Power OFF then ON to exit initial set mode.  
Initial set mode  
MENU  
No. Indication  
Description  
No. Indication  
Description  
1 MODE SELECT  
2 BEEP  
Mode availability  
Auto repeater function  
Scan resume condition  
Scanning speed  
20 AUTO RPTR  
21 SCAN RESUME  
22 SCAN SPEED  
23 U/D SPEED  
24 AM NB  
Confirmation beeps  
Band edge beeps  
3 BAND BEEP  
4 BACK LIGHT  
5 KEY LIGHT  
6 AUTO OFF  
7 RF/SQL  
Y
[UP]/[DN] speed  
Display backlighting  
Key backlighting  
AM noise blanker  
No. of memory pads  
Auto power OFF function  
RF gain/squelch control  
Sub dial RIT function  
Optional filter 1  
25 PAD CH  
26 PWR ON CHK  
27 A-TUNE STRT  
Power ON check function  
Auto tune start function  
PTT tune function  
8 SUB DIAL  
9 OPT.FIL 1  
10 OPT.FIL 2  
11 PEAK HOLD  
12 QUICK SPLIT  
13 SPLIT LOCK  
14 SPL OFFSET  
15 DUP HF  
28  
29  
30  
31  
32  
33  
34  
35  
36  
PTT TUNE  
Optional filter 2  
9600 MODE  
VSEND SEL  
SPEECH LANG  
SPEECH SPD  
S-LVL SPC  
CI-V ADDRES  
CI-V BAUD  
CI-V TRN  
Packet data speed  
ACC output selection  
Speech synthesizer lang.  
Speech synthesizer speed  
Speech synthesizer S-meter  
Meter peak function  
Quick split function  
Split lock function  
Quick split offset  
Quick split offset (HF)  
Quick split offset (50 MHz)  
Quick split offset (144 MHz)  
Quick split offset (430 MHz)  
CI-V address assignment  
Data transfer rate  
CI-V transceive  
CI-V 731  
Z
16 DUP 50M  
17 DUP 144M  
18 DUP 430M  
19 1TOUCH RPTR  
CI-V 731  
37  
One touch repeater  
MENU  
67  
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MENU GUIDE 14  
S1  
S2  
MW  
MPW  
MPR  
M1 SPL A/B  
A=B  
XFC  
SCN  
PRI  
SEL  
V/M  
(in memory  
mode)  
(when split  
is ON)  
MENU  
DISPLAY  
M2 MW  
MÜV  
MCL  
V/M  
S3  
S4  
7
50  
NR  
144  
NRL  
(in memory mode)  
MENU  
ANF  
M3 FIL NB  
M4 VOX COM  
MET  
DISPLAY  
(SSB/AM)  
AGC  
AGC  
AGC  
TON  
(CW)  
G1  
G2  
G3  
G4  
BAND scope  
IF SHIFT  
TX freq.  
M4  
BRK  
1/4  
M4 1/4  
M4 VOX COM  
MODE  
DISPLAY  
(RTTY)  
(FM)  
MENU  
Memory name  
DISPLAY  
DISPLAY  
For 2 sec.  
Quick set mode  
No. SSB/AM/FM mode  
Q1 RF POWER  
Y
CW mode  
RF POWER  
RTTY mode  
RF POWER  
Q2 MIC GAIN  
CW PITCH  
RTTY TONE  
RTTY SHIFT  
RTTY KEYING  
Q3 VOX DELAY  
BK-IN DELAY  
CW PADDLE  
KEY SPEED  
Q4  
Q5  
VOX GAIN  
ANTI VOX  
M-CH  
MENU  
CARRIER Freq*1  
Q6  
RATIO  
RPTR TONE*2  
TONE SQL*2  
RPTR-T*3  
T-SQL*4  
Q7  
Q8  
Y
*1SSB mode only; *2FM mode only; *3FM mode only/tone encoder ON;  
*4FM mode only/tone squelch ON.  
68  
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Count on us!  
A-5564H-1EX-q  
Printed in Japan  
©1999 by Icom Inc.  
6-9-16 Kamihigashi, Hirano-ku, Osaka 547-0002, Japan  
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