Icom IC-706MKIIG, I706MKTMG User Manual

INSTRUCTION MANUAL

i706MK™G

HF/VHF/UHF ALL MODE TRANSCEIVER

This device complies with Part 15 of the FCC rules. Operation is sub­ject 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.

EXPLICIT DEFINITIONS

PRECAUTIONS

IMPORTANT

Read this instruction manual carefully

before attempting to operate the transceiver.

Save this instruction manual. This instruction

manual contains important safety and operating
instructions for the IC-706MKIIG.

RWARNING HIGH VOLTAGE! NEVER

attach an antenna or internal antenna connector dur­ing transmission. This may result in an electrical shock
or burn.

RNEVER apply AC to the [DC13.8V] socket on the

transceiver rear panel. This could cause a fire or ruin
the transceiver.

RNEVER apply more than 16 V DC, such as a 24 V

battery, to the [DC13.8V] socket on the transceiver
rear panel. This could cause a fire or ruin the trans­ceiver.

RNEVER let metal, wire or other objects touch any

internal part or connectors on the rear panel of the
transceiver. This will cause electric shock.

RNEVER expose the transceiver to rain, snow or

any liquids.

NEVER allow children to play with the transceiver.

AVOID using or placing the transceiver in areas with

temperatures below –10°C (+14°F) or above +60°C
(+140°F). Be aware that temperatures on a vehicle’s
dashboard can exceed 80°C, resulting in permanent
damage to the transceiver’s front panel if left there for
extended periods.

AVOID placing the transceiver in excessively dusty
environments or in direct sunlight.

AVOID placing the transceiver against walls or putting
anything on top of the transceiver. This will obstruct
heat dissipation.

During mobile operation, DO NOT operate the trans­ceiver without running the vehicle’s engine. When
transceiver power is ON and your vehicle’s engine is
OFF, the vehicle’s battery will soon become exhausted.

Make sure the transceiver power is OFF before start­ing the vehicle. This will avoid possible damage to the
transceiver by ignition voltage spikes.

During maritime mobile operation, keep the transceiv­er and microphone as far away as possible from the
magnetic navigation compass to prevent erroneous
indications.

BE CAREFUL!

The heatsink will become hot when

operating the transceiver continuously for long periods.

BE CAREFUL! If a linear amplifier is connected, set
the transceiver’s RF output power to less than the lin­ear amplifier’s maximum input level, otherwise, the lin­ear amplifier will be damaged.

Use Icom microphones only (supplied or optional).
Other manufacturer’s microphones have different pin
assignments and connection to the IC-706MKIIG may
damage the transceiver.

Beat signals may be heard on some frequencies.
These will occur as a result of circuit construction.

For U.S.A. only

Caution: Changes or modifications to this transceiver, not
expressly approved by Icom Inc., could void your author­ity to operate this transceiver under FCC regulations.

i

The explicit definitions described below apply to this
instruction manual.

WORD DEFINITION

RWARNING

Personal injury, fire hazard or electric
shock may occur.

CAUTION

Equipment damage may occur.

NOTE

If disregarded, inconvenience only. No risk
of personal injury, fire or electric shock.

TABLE OF CONTENTS

IMPORTANT ............................................................. i

PRECAUTIONS ........................................................ i

EXPLICIT DEFINITIONS .......................................... i

TABLE OF CONTENTS ............................................ ii

UNPACKING ............................................................. ii

1 PANEL DESCRIPTION .....................................1–8

■ Front panel ............................................................... 1

■ Function switches ..................................................... 3

■ Rear and side panels ............................................... 5

■ Function display ....................................................... 7

■ Microphone (HM-103) ............................................... 8

2 INSTALLATION AND CONNECTIONS .......... 9– 14

■ Unpacking ................................................................. 9

■ Grounding ................................................................. 9

■ Antenna .................................................................... 9

■ Installation ................................................................ 10

■ Required connections ............................................... 11

■ Advanced connections ............................................. 12

■ Power supply connections ........................................ 13

■ External antenna tuners and linear amplifier ............ 14

3 FREQUENCY SETTING................................ 15–19

■ When first applying power (CPU resetting) .............. 15

■ Initial settings ............................................................ 15

■ VFO description ........................................................ 16

■ Frequency setting ..................................................... 17

■ Mode selection ......................................................... 19

4 RECEIVE AND TRANSMIT .......................... 20– 38

■ 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

5 MEMORY AND SCAN OPERATION ............ 39–44

■ 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

6 REMOTE JACK (CI-V) INFORMATION ........ 45–46

7 SET MODE .................................................... 47–55

■ General ..................................................................... 47

■ Quick set mode items ............................................... 48

■ Initial set mode items ............................................... 50

8 MAINTENANCE ................................................... 56

■ Fuse replacement ..................................................... 56

■ Memory backup ........................................................ 56

■ Cleaning ................................................................... 56

9 TROUBLESHOOTING .................................. 57– 58

10 OPTIONAL INSTALLATIONS/SETTINGS .. 59–62

■ 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

11 INTERNAL VIEWS ............................................. 63

12 OPTIONS .................................................... 64– 65

13 SPECIFICATIONS ............................................. 66

14 MENU GUIDE ..............................................67–68

ii

UNPACKING

Accessories included with the IC-706MKIIG:

Qty.

q DC power cable* ....................................................1

w Hand microphone (HM-103)...................................1

e Spare fuse (30 A) ...................................................2

r Spare fuse (4 A) .....................................................1

t RTTY key plug........................................................1

y Electronic keyer plug ..............................................1

u ACC cable ..............................................................1

i Ferrite bead** .........................................................1

*OPC-639 for Europe versions (differs from the diagram at

left), OPC-025D for other versions.

**Not supplied with some versions.

q

w

er

yt

u

i

■ Front panel

q POWER SWITCH [POWER] (p. 15)

Turns power ON and OFF.

• Push momentarily to turn power ON.

• 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.

e RF 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.

• RF gain selection can be set in initial set mode (p. 50).

• RF gain is usable in SSB/CW/RTTY modes only.

r FUNCTION DISPLAY

Shows the operating frequency, dot matrix indica­tions, selected memory channel, etc. See p. 7 for
details.

t TUNING 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.

➥ 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.

y MODE 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
CW ↔ CWå
RTTY↔ åRTTY
FM → WFM → AM → FM, etc.

u

RECEIVE/TRANSMIT INDICATORS [RX]/[TX]

[RX] lights green while receiving (and squelch
opens); [TX] lights red while transmitting.

i MAIN DIAL

Changes the displayed frequency, selects initial set
mode items, etc.

o UP/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.

!0 MAIN DIAL TENSION LATCH

Selects the main dial tension.

• 2 positions are available.

!1 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

1

PANEL DESCRIPTION

HF/VHF/UHF TRANSCEIVER

i706MK™G

AF

RIT/
SUB

MENU F-1 F-2 F-3

MODE

BAND

BAND

Y

Z

TS

DISPLAY

LOCK

RX

TX

M-CH

PHONES

TUNER/CALL

P.AMP/ATT

POWER

SHIFT

RF/SQL

q

w e

r

t

y

i

o

o

!1

!2!3!4!5!6!7!8

!9

@0

@2

@1

!0

u

CH

VFO A

P

O

S1

5

537920401060dB

USB

M1

SPL

A/B A=B

2

1

PANEL DESCRIPTION

panel. DO NOT connect 2 microphones simultaneously.

!2 LOCK SWITCH [LOCK]

➥ Push momentarily to turn the dial lock function

ON and OFF.

• 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.

• UT-102 operation can be adjusted in initial set mode
(pgs. 53, 54).

!3 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.

!4 FUNCTION SWITCHES [F1]/[F2]/[F3] (pgs. 3, 4, 68)

Push to select the function indicated in the dot
matrix display above these switches.

• Functions vary depending on the menu set selected.

!5 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.

!6 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*.

• 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).

➥ When the RIT function is ON, push for 2 sec. to

add or subtract the shifted frequency to the oper­ating frequency.

*Even if RIT is selected in initial set mode, RIT cannot be

selected when operating AM, FM or WFM modes.

!7 SHIFT CONTROL [SHIFT] (outer control; p. 20)

Shifts the center frequency of the receiver’s IF pass­band.

• Rotate the control clockwise to shift the center frequen­cy 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 accor­dance with the [SHIFT] control (see p. 20).

!8 M-CH CONTROL [M-CH] (inner control)

➥

When the RIT or SUBDIAL functions are OFF,
rotate to select a memory channel number (p. 35).

➥ Shifts the receive frequency while the RIT func-

tion is ON in SSB, CW and RTTY modes (see
below and p. 20).

• 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).

!9 HEADPHONE JACK [PHONES] (p. 12)

Accepts headphones with 4–16 Ω 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.

@0 TUNER/CALL SWITCH [TUNER/CALL]

(pgs. 26, 27)

➥ During HF/50 MHz operation, push this switch

momentarily to toggle the automatic antenna
tuner function ON/OFF.

• 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 pre­vious channel/frequency when the call channel is
already selected). (p. 39)

•“C1” is the 144 MHz call channel and “C2” is the 430
MHz call channel.

@1

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.

@2 P

REAMP/ATTENUATOR SWITCH [P.AMP/ATT]

(p. 21)

➥ 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.

LOCK

Lights while the lock
function is activated.

RIT
SUB

Lights red while the RIT function is activated;
green while the SUB DIAL function is activated.

TUNER/CALL

Lights while the automatic
tuning function is activated.

P.AMP/ATT

Lights green while the preamp is activated;
lights red while the attenuator is activated.

■ Function switches

D M1 FUNCTIONS

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.

VFO A/B SELECTION (p. 16)

➥ Toggles between VFO A and VFO B in

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 func­tion is turned ON.

VFO EQUALIZATION (p. 16)

Equalizes the frequency and operating
mode of the two VFO’s.

• The rear (undisplayed) frequency and operat­ing mode are equalized to the front (displayed)
VFO frequency and operating mode.

TRANSMIT FREQUENCY CHECK (p. 29)

Appears when the split function is turned
ON—monitors the transmit frequency
when pushed and held.

• While pushed, the transmit frequency can be
changed with the main dial.

D M2 FUNCTIONS

MEMORY WRITE (p. 40)

Stores the displayed frequency and oper­ating mode into the displayed memory
channel.

MEMORY TRANSFER (p. 41)

Transfers the frequency and operating

mode in the selected memory channel to a

VFO.

VFO/MEMORY (p. 39)

Toggles between VFO and memory

modes.

MEMORY CLEAR (p. 39)

Clears the selected memory channel’s
contents.

•“}” appears.

D M3 FUNCTIONS

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 fol­lowing:
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.

• 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).

METER SELECTION (p. 25)

Selects the type of meter displayed (during
transmit) in the function display.

• Power, ALC or SWR metering can be select­ed.

• Only an S-meter is available for receive.

D M4 FUNCTIONS

DURING SSB/AM OPERATION:

DURING CW OPERATION:

DURING RTTY OPERATION:

DURING FM OPERATION:

F-3

MET

F-2

NB

F-1

FIL

F-2

MCL

F-3

V/M

F-2

MÜV

F-1

MW

F-3

XFC

F-3

A=B

F-2

A/B

F-1

SPL

3

1

PANEL DESCRIPTION

MENU

M3

F-1

FIL

F-2

NB

F-3

MET

MENU

M4

F-1

VOX

F-2

COM

F-3

AGC

MENU

M4

F-1 F-2

BRKi/4

F-3

AGC

MENU

M2

F-1

MW

F-2

MÜV

MCL

F-3

V/M

(in memory mode)

MENU

M4

F-1

1/4

F-2 F-3

AGC

MENU

M4

F-1

VOX

F-2

TSQ

F-3

TON

MENU

M1

F-1

SPL

F-2

A/B

XFC

F-3

A=B

4

1

PANEL DESCRIPTION

VOX FUNCTION (p. 26)

Toggles the VOX function ON and OFF.

• The [VOX GAIN] and [ANTI VOX] are avail­able on the side panel.

• VOX delay can be set in quick set mode
(p. 48).

SPEECH COMPRESSOR (p. 26)

Toggles the speech compressor ON and
OFF.

• The [COMP GAIN] control is available on the
side panel.

AGC (p. 21)

Changes the time constant of the AGC cir­cuit.

BREAK-IN (p. 33)

Selects semi break-in, full break-in (QSK)
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.

1/4 FUNCTION (p. 36)

Toggles the 1/4 function ON and OFF.

• When the 1⁄4 function is ON, a bar appears
under the

1

⁄4 indication and fine tuning can be

used.

TONE SQUELCH (p. 31)

Toggles the tone squelch function ON and
OFF (a tone squelch frequency must be
selected in Quick Set mode).

•“FM-TSQL” appears when the function is ON.

REPEATER TONE OPERATION (p. 30)

➥ Toggles the subaudible tone encoder for

repeater use ON and OFF.

•“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).

D S1 FUNCTIONS

MEMORY WRITE (p. 40)

Stores the displayed frequency and oper­ating mode into the displayed memory
channel.

MEMO PAD WRITE (p. 42)
Stores the displayed frequency and oper­ating mode into a memo pad.

MEMO PAD READ (p. 42)
Calls up a memo pad.

D S2 FUNCTIONS

SCAN (p. 44)

Starts and stops the scan function.

PRIORITY WATCH (p. 44)
Starts and stops priority watch.

SELECT SCAN (p. 44)
Toggles the select setting ON and OFF for
the selected memory channel.

VFO/MEMORY (p. 44)
Toggles between VFO and memory
modes.

D S3 FUNCTIONS

QUICK BAND CHANGE FUNCTION (p. 19)

This item provides access to the band stacking regis­ter. By default the 7, 50 and 144 MHz bands are dis­played. Push [F-1] to [F-3] for 2 sec. to select a new
band if desired.

• A mode is memorized along with the frequency for each
band.

D S4 FUNCTIONS (may be optional for some ver.)

AUTOMATIC NOTCH FILTER (p. 24)

This function automatically attenuates beat
tones, tuning signals, etc., even if they are
moving.

NOISE REDUCTION (p. 24)
This function reduces noise components
and picks out desired signals which are
buried in the noise.

NOISE REDUCTION DISPLAY (p. 24)
This displays the noise reduction level
when using the noise reduction function.

F-3

NRL

F-2

NR

F-1

ANF

F-3

V/M

F-2

SEL

F-2

PRI

F-1

SCN

F-3

MPR

F-2

MPW

F-1

MW

F-3

TON

F-2

TSQ

F-1

1/4

F-2

BRK

F-3

AGC

F-2

COM

F-1

VOX

MENU

S1

F-1

MW

F-2

MPW

F-3

MPR

MENU

S2

F-1

SCN

F-2

PRI

SEL

F-3

V/M

(in memory mode)

MENU

S3

F-1

7

F-2

50

F-3

144

MENU

S4

F-1

ANF

F-2

NR

F-3

NRL

5

1

PANEL DESCRIPTION

■ Rear and side panels

q GROUND TERMINAL [GND] (p. 9)

Connect this terminal to a ground to prevent electri­cal shocks, TVI, BCI and other problems.

w

ANTENNA CONNECTORS [ANT 1], [ANT 2] (p. 11)

Accept a 50 Ω 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.

• These connectors are switched above or below 60 MHz.

e

DATA JACK [DATA] (p. 12)
6-pin min DIN jack to connect a TNC, etc. for pack­et 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.

t

RTTY JACK [RTTY] (p. 35)
Connects an external terminal unit for RTTY (FSK)
operation.

• The keying polarity and mark/shift frequencies can be

selected in quick set mode (p. 48).

y CI-V REMOTE CONTROL JACK [REMOTE]

(p. 45)
Designed for use with a personal computer for
remote operation of transceiver functions.

u MICROPHONE CONNECTOR [MIC] (p. 11)

Accepts the supplied microphone (connected in par­allel with the front panel’s [MIC] connector).

• See pgs. 1 and 2 for microphone notes.

• See p. 8 for microphone connector information.

i ELECTRONIC 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)

o DC POWER SOCKET [DC13.8V] (p. 13)

Accepts 13.8 V DC through the supplied DC power
cable.

!0 EXTERNAL SPEAKER JACK [EXT SP] (p. 12)

Accepts a 4–16 Ω speaker.

!1 TUNER CONTROL SOCKET [TUNER] (p. 12)

Accepts the control cable from an optional AH-3

HF

AUTOMATIC ANTENNA TUNER

.

!2 SPEECH COMPRESSION LEVEL CONTROL

[COMP GAIN] (p. 26)

Adjusts the compression level.

• This control is available only when the speech compres­sor is ON.

COMP

GAIN /SIDE T

BEEP

DC 13.8V

EXT SP

MIC

KEY

TUNER

ANT 1

ANT 2

GND

q

w

er ui

o

!2 !3

!0!1

ty

When connecting
a straight key

When connecting
a paddle

(dot)
(com)
(dash)

(⊕)

Rear panel view

Recommended
level

Counterclockwise
decreases

Clockwise
increases

COMP

GAIN /SIDE T

BEEP

• ACC SOCKET

• When connecting the ACC conversion cable (OPC-599)

6

1

PANEL DESCRIPTION

!3 BEEP/SIDETONE CONTROL [BEEP/SIDETONE]

Adjusts the beep tone and CW side tone audio lev­els.

TECHNICAL INFORMATION

ACC PIN # NAME DESCRIPTION SPECIFICATIONS COLOR

1 8 V Regulated 8 V output.

Output voltage : 8 V ±0.3 V
Output current : Less than 10 mA

brown

2 GND Connects to ground. red

3 HSEND

Input/output pin (HF/50 MHz).
Goes to ground when transmitting.
When grounded, transmits (connected to 8V

line thru 2.2 kΩ resistance/144 MHz operation)

.

Ground level :–0.5 V to 0.8 V
Input current : Less than 20 mA

(HF/50 MHz bands)

orange

4 BDT Data line for the optional AT-180. yellow

5 BAND

Band voltage output.
(Varies with amateur band)

Output voltage : 0 to 8.0 V green

6 ALC ALC voltage input.

Control voltage : –4 to 0 V
Input impedance : More than 10 kΩ

blue

7 VSEND

Input/output pin (144 MHz).
Goes to ground when transmitting.
When grounded, transmits

(connected to 8V

line thru 2.2 kΩ resistance/HF•50 MHz operation)

.

Ground level :–0.5 V to 0.8 V
Input current : Less than 20 mA

(144 MHz band)

purple

8 13.8 V 13.8 V output when power is ON. Output current : Max. 1 A gray

9 TKEY Key line for the AT-180. white

10 FSKK

RTTY keying input.
Connected in parallel to the [RTTY] jack.

Ground level :–0.5 to 0.8 V
Input current : Less than 10 mA

black

11 MOD Modulator input.

Input impedance :10 kΩ
Input level :Approx. 100 mV
rms

pink

12 AF

AF detector output.
Fixed, regardless of [AF] position.

Output impedance : 4.7 kΩ
Output level : 100 to 350 mV rms

light
blue

13 SQLS

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

light
green

Rear panel

view

1234

8765

9

10 11 12

13

Color refers to the
cable strands of the
supplied cable.

ACC 1

ACC 2

➀ FSKK ➄ AF
➁ GND ➅ SQLS

➂ HSEND ➆ 13.8 V
➃ MOD ➇ ALC

➀ 8 V ➄ ALC
➁ GND ➅ VSEND

➂ HSEND ➆ 13.8 V
➃ BAND

1122334

4

8877665

5

9

10 11 12

13

1

2

3

4

76

5

7

1

PANEL DESCRIPTION

■ Function display

q NARROW/WIDE FILTER INDICATORS

➥ “ã” appears when selecting AM narrow or FM

narrow modes.

➥ When installing an optional narrow filter, narrow

mode can be selected in CW, RTTY and SSB
modes.

• When the SSB wide filter is installed, “ç” appears

during wide mode selection.

w MODE INDICATORS

Show the operating mode.

e PROGRAMMABLE/1 MHz TUNING STEP

INDICATORS

➥➌a appears when the programmable tuning step

is selected.

➥➌b appears when the 1 MHz tuning step is

selected.

r SPLIT INDICATOR

Shows that the split frequency function is activated.

t FREQUENCY READOUT

Shows the operating frequency.

•“C” appears in place of the 1 Hz digit when the call chan-
nel is selected.

y DUPLEX INDICATORS

➥ “DUP+” appears during plus duplex operation.
➥ “DUP–” appears during minus duplex operation.

u BLANK INDICATOR

Shows that the displayed memory channel is not
programmed.

• This indicator appears both in VFO and memory modes.

i VFO/MEMORY INDICATORS

VFO A or B appears when VFO mode is selected;
MEMO appears when memory mode is selected.

o SELECT INDICATOR

Shows that the displayed memory channel is desig­nated as a select memory channel.

!0 MEMORY CHANNEL NUMBER READOUT

Shows the selected memory channel number.

!1 DOT MATRIX INDICATORS

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 indi­cators.

!2 METER READOUTS

➥ Functions as an S-meter while receiving.
➥ Functions as a power, ALC or SWR meter while

transmitting.

Note: The SWR meter does not function in the 144
MHz band.

!3 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.

➥ “FAGC” appears when the fast AGC function is

selected.

!4 DSP INDICATORS

Appear when the optional DSP unit is installed and
activated.

N W R SPL

LSB

DSP

NB VOX F-BK COM F

S

CH

VFO A

DUP

VFO B
MEMO

AGC

ALC
SWR PO

S1

1 1.5 2 3 5

53792040

10

∞

60dB

USB CW RTTY

AM WFM TSQL

BLANK

ANF

NR

qw r

t

y

u

o

!1

!2

!3

!4

i

!0

ea

eb

M1

SPL

A/B

A=B

• MICROPHONE CONNECTOR

8

1

PANEL DESCRIPTION

■ Microphone (HM-103)

➊ UP/DOWN SWITCHES [UP]/[DN]

Change the operating frequency.

• Push and hold to change the frequency continuously.

• Tuning step is 50 Hz when no TS indicator appears.

➋ LOCK SWITCH [LOCK]

Locks the [UP]/[DN] switches.

➌ PTT SWITCH [PTT]

Push and hold to transmit; release to receive.

TECHNICAL INFORMATION

PIN NO. FUNCTION DESCRIPTION

1 +8 V DC output Max. 10 mA

2

Frequency up Ground

Frequency down Ground through 470 Ω

8

Squelch open “LOW” level

Squelch closed “HIGH” level

➃ PTT

➅ Microphone input

➁ Frequency up/down

➆ GND

➀ +8 V DC output

➇ Squelch switch

➄ GND (microphone ground)

➂ AF output

Rear panel view

1 2345 678

• HM-103 SCHEMATIC DIAGRAM

4700p

4700p

10µ

0.33µ

+

+

MICROPHONE

MIC
ELEMENT

2k

2.2k

470

DOWN UP

PTT

RECEIVE
TRANSMIT

MICROPHONE
CABLE

MICROPHONE PLUG

12345678

Caution: DO NOT short pin 1 to ground as

this can damage the internal 8 V regulator.

➊

LOCK

DN UP

OFF ON

➋

➌

9

2

INSTALLATION AND CONNECTIONS

■ Unpacking

After unpacking, immediately report any damage to
the delivering carrier or dealer. Keep the shipping car­tons.

For a description and a diagram of accessory equip­ment included with the IC-706MKIIG, see UNPACK­ING on p. ii of this manual.

■ Grounding

To prevent electrical shock, television interference
(TVI), broadcast interference (BCI) and other prob­lems, ground the transceiver through the GROUND
terminal on the rear panel.

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.

CAUTION: Protect your transceiver from lightning

using a lightning arrestor.

RWARNING: NEVER connect the [GND] ter-

minal to a gas or electric pipe, since the connection
could cause an explosion or electric shock.

30 mm

10 mm (soft solder)

10 mm

1–2 mm

solder solder

Soft
solder

Coupling ring

PL-259 CONNECTOR INSTALLATION EXAMPLE

➀➂

➃

➁

Slide the coupling ring
down. Strip the cable
jacket and soft solder.

Slide the connector
body on and solder it.

Screw the coupling ring
onto the connector
body.

Strip the cable as
shown at left. Soft
solder the center con­ductor.

(10 mm ≈

3

⁄8 in)

;

;

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 transis­tors. 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.

;;

;;

To raise the stand:

With the transceiver upside down, pull the stand
towards the rear panel and then upwards, as illus­trated below.

10

2

INSTALLATION AND CONNECTIONS

■ Installation

D Single body mounting D Stand

*CAUTION: Non-supplied screws (longer than 8 mm)

may damage the internal units.

MB-62
(optional)

Supplied with
the MB-62*

Pull back

then up

D Front panel separation

D Front panel mounting

➀ While pulling the panel release button towards you,

slide the front panel to the right (fig. 1).

➁ Attach the optional OPC-581 to the main body and

tighten the supplied screw as in fig. 2.

➂ Attach the other end of the OPC-581 to the

detached front panel as in fig. 3.

➀ Attach the MB-63 to a flat surface using the two

supplied screws (fig. 1).

➁ Fix the detached front panel to the MB-63 as illus-

trated in fig. 2.

Be careful of the orientation of the MB-63, other­wise, the front panel may become attached in the
opposite direction.

fig. 1

fig. 2

fig. 3

fig. 1

fig. 2

11

2

INSTALLATION AND CONNECTIONS

■ Required connections

DC 13.8V

EXT SP

MIC

KEY

TUNER

ANT 1

ANT 2

GND

HF/VHF/UHF TRANSCEIVER

i706MK™G

AF

RIT/
SUB

MENU F-1 F-2 F-3

MODE

Y

Z

TS

DISPLAY

LOCK

RX

TX

M-CH

PHONES

TUNER/CALL

P.AMP/ATT

POWER

SHIFT

RF/SQL

BAND

BAND

MICROPHONE (p. 8)

HF/50 MHz ANTENNA

RTTY TERMINAL
UNIT

(p. 35)

2 m ANTENNA

PS-85

GROUND

(p. 9)

HM-103

See p. 13 for details.

CW KEY (p. 33)

Use the heaviest gauge wire or
strap available and make the
connection as short as possible.

Grounding prevents electrical
shocks, TVI and other
problems.

12

2

INSTALLATION AND CONNECTIONS

■ Advanced connections

DC 13.8V

EXT SP

MIC

KEY

TUNER

ANT 1

ANT 2

GND

OPC-589 (p. 65)

DESKTOP (p. 64)
MICROPHONE

SPEAKER

Selectable with the
[PHONE/SPEAKER] switch
on the back of the front panel.

ACC SOCKET (p. 6)

REMOTE

(p. 45)

Used for computer control and transceive.

DATA JACK

(p. 37)

6-pin mini DIN jack to connect to a
TNC, etc. for packet operation.

AH-3

(p. 14)

AH-2b

COAX ANTENNA
SWITCH

EXTERNAL
SPEAKER (p. 65)

HEADPHONES

SP-21

When using a 50 MHz
antenna separately
since the AH-3 can
only be used for the
HF bands.

or

HF/VHF/UHF TRANSCEIVER

i706MK™G

AF

RIT/
SUB

MENU F-1 F-2 F-3

MODE

Y

Z

TS

DISPLAY

LOCK

RX

TX

M-CH

PHONES

TUNER/CALL

P.AMP/ATT

POWER

SHIFT

RF/SQL

BAND

BAND

CONNECTING THE PS-125 / PS-85 DC POWER SUPPLY

PS-125 / PS-85

Connect to an AC outlet
using the supplied AC cable.

DC power cable

DC power
socket

CONNECTING A NON-ICOM
DC POWER SUPPLY (For Europe versions)

Transceiver

DC power

socket

To non-Icom
power supply

[GND]

OPC-639

CONNECTING A NON-ICOM
DC POWER SUPPLY

Transceiver

DC power
socket

To AC outlet

Supplied
DC power cable

13.8 V

Black

30 A fuses

Red

20 A

13

2

INSTALLATION AND CONNECTIONS

■ Power supply connections

Use the optional PS-125 / PS-85 DC POWER SUPPLY
when operating 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

Grommet

CONNECTING A VEHICLE BATTERY

NEVER

connect to

a 24 V battery.

Note: Use terminals for

the cable connections.

Crimp

Solder

Supplied
DC power cable

red

black

12 V
battery

Note: When using the PS-125, the IC­706MKIIG Europe version complies with
EMC directives even if the OPC-639 is
not used.

14

2

INSTALLATION AND CONNECTIONS

■ External antenna tuners and linear amplifier

AH-4

ANT 1

Transceiver

Coaxial cable

(from the AH-4)

To the AH-2b or
an antenna element

CONNECTING THE AH-4

The AH-4 can be used for the HF bands and 50
MHz band only.

CONNECTING THE AT-180

Ground

HF
to 6 m
antenna

[TRANSCEIVER]

[ANT 1] [ACC] [ACC]AT-180

ACC cable supplied with the AT-180

Coaxial cable supplied
with the AT-180

IC-706

one of two
connectors

ACC-1 REMOTE

INPUT-1 ANT1

ANT

Mini-plug cable

ACC cable

7-pin side

AC outlet (220–240 V)

IC-PW1

GND

GND

ACC REMOTE

Transceiver

Coaxial cable

To an
antenna

OPC-599 conversion cable

CONNECTING THE IC-PW1

Note:

• Turn the IC-706MKIIG’s power
OFF when connecting the AT­180, 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.

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.

[ANT 1]

Transceiver

Duplexer

HF to 2 m
antenna

AT-180

[ANT 2]

15

3

FREQUENCY SETTING

■ When first applying power (CPU resetting)

Before first applying power, make sure all connections
required for your system are complete by referring to
section 2. Then, reset the transceiver using the fol­lowing procedure.

➀ Make sure the transceiver power is OFF.
➁ While pushing [Y] and [Z], push [POWER] to turn

power ON.

• The internal CPU is reset.

• The transceiver displays as shown at right when reset-

ting is complete.

D M1 display selection

If you can’t figure out how to return to the M1 display:
While pushing [MENU], turn power ON.

■ Initial settings

After resetting the transceiver, set controls and switch­es as shown in the diagram below.

Note: Resetting clears all programmed contents in

memory channels and returns all initial set mode and
quick set mode contents to their default values.

BLANK

CH

VFO A

S1

5379204060dB

USB

M1

SPL

A/B

A=B

The transceiver displays
its initial frequency and
mode.

[POWER]

[Y]

[Z]

PO 5

10

[AF]: Max. CCW

[RF/SQL]: Max. CCW

[LOCK]: OFF
(indicator light out)

[POWER]: OFF

[SHIFT]: Center

[P.AMP/ATT]: OFF
(indicator lights out)

[TUNER/CALL]: OFF
(indicator lights out)

[RIT/SUB]: OFF
(indicator lights out)

CCW: counterclockwise

Turn power ON, then check the display. If any of the
following indicators appear, turn them OFF as follows:

• Tuning step indicators,

Z

, (SSB, CW or RTTY):

Push [TS].

• MHz tuning step indicator, Z, (FM, WFM or AM):
Push [TS].

• 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).

16

3

FREQUENCY SETTING

■ 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.

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 fre­quency with the main dial and select an operating
mode with the [MODE] switch or call up previously
accessed frequency and modes with the band stack­ing register (p. 19).

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

frequency and operating mode for operation.

CH

VFO A

USB

M1

SPL

A/B

A=B

VFO

MODE

SWITCH

MEMORY

CHANNEL

DIAL

MEMO PAD

28.025 MHz

7.001 MHz

21.295 MHz

BAND

Select

Change

Transfer

Transfer

Transfer

• The differences between VFO and memory mode

VFO MODE

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.

When the VFO is selected from another VFO or
memory mode, the last-used frequency and operat­ing mode for that VFO appear.

[EXAMPLE]

MEMORY MODE

(pgs. 39–42)
Each memory channel shows a frequency and oper­ating 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 a memory channel is selected from another
memory channel or VFO mode, the memorized fre­quency and operating mode appear.

[EXAMPLE]

CH

VFO A

USB

CH

VFO A

USB

VFO is selected.

The frequency is changed.

MEMO

CH

VFO A

USB

VFO is selected again.

Changed frequency (14.123 MHz) appears. Changed frequency (14.123 MHz) does not appear and

memorised frequency (14.100 MHz) appears instead.

CH

USB

Memory mode is selected.

CH

USB

CH

USB

Memory channel 1 is
selected.

The frequency is changed.

MEMO

MEMO

MEMO

MEMO

CH

USB

Memory channel 1 is
selected again.

CH

USB

Another memory channel
is selected.

17

3

FREQUENCY SETTING

• 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

➀ Push [TS] one or more times until the programma-

ble tuning step indicator, “Z,” appears above the
1 kHz digit.

• Rotating the main dial changes the frequency according
to the set tuning step.

➁ Push [TS] for 2 sec. while the programmable tun-

ing step indicator appears to enter the tuning step
selection mode.

• Rotate DIAL appears.

➂ Rotate the main dial to set the desired tuning step.

• Change the mode and select tuning steps for other
modes, if desired.

➃ Push [TS] to exit the tuning step selection mode.
➄ Rotate the main dial to change the frequency

according to the set tuning step.

• Band selection

All HF ham bands, the 50 MHz band, the 144 MHz
band and a general coverage receiver band are
included in the IC-706MKIIG.

Push [

(Y)BAND]/[(Z)BAND] to select the desired

band.

• Pushing [(Y)BAND]/[(Z)BAND] continuously scrolls
through the available bands.

Note: The band stacking register can also be used to
select bands. Refer to p. 19.

USB

FM

USB

USB

LSB

Z

Z

■ Frequency setting

Programmable tuning
step indicator

10 kHz tuning step is
selected for USB
operation.

CH

VFO A

PO

S1

5

537920401060dB

USB

USB

M1 A/B A=B

DIAL

SPL

Rotate

• 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.

➀ Select SSB, CW or RTTY mode if necessary.
➁ 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.

Rotating the main dial
changes the frequency
in 10 Hz steps.

Rotating the main dial
changes the frequency
in 1 Hz steps.

TS

Push

for 2 sec.

VFO A

USB

VFO A

USB

18

3

FREQUENCY SETTING

• 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.

➀ Select FM, WFM or AM mode if necessary.
➁ Push [TS] momentarily to toggle between the 1

MHz tuning step and the programmable tuning
step.

•“Z” appears above the 1 MHz indicator when the 1
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 frequen­cy in 5 MHz steps.

Quick tuning step
indicator

Rotating the main dial
changes the frequen­cy in 1 MHz steps.

FM

FM

[TS] SWITCH FLOW CHART

SSB/CW/RTTY modes Any mode FM/WFM/AM modes

TS

USB

10 Hz tuning

USB

1 Hz tuning

momentarily momentarily

momentarily

2 sec.2 sec.

2 sec.

TS

TS

1 MHz tuning

USB

Programmable step tuning
(100 Hz –100 kHz)

Selectable for each mode.

USB

Rotate DIAL

FM

• Sub dial function

The sub dial function allows you to change the oper­ating 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 accord­ing 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.”

➀ 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.

➁ Rotate [M-CH] to change the operating frequency

according to the set tuning steps.

➂ Push [RIT/SUB] again to turn the function OFF.

• The [SUB] indicator turns off.

[SUB] switch

Indicator lights green
while the sub dial function
is activated.

[M-CH] control

RIT/
SUB

19

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.

➀ Select S3.

• Push [DISPLAY] when M or G is displayed.

• Push [MENU] twice to select

S3.

➁ 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.

➂ 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 dis­play above the corresponding switch.

• The last-used frequency and mode for the selected
band are displayed.

*General refers to the general coverage receiver (

GEN in

the display) and the range varies according to version.

** 1.83000 MHz

for Italy version (#10,#20).

■ Mode selection

The following modes are available in the IC­706MKIIG:

SSB (LSB/USB), CW, CW-å (CW reverse), FM,
WFM (receive only), AM, RTTY and åRTTY (RTTY
reverse).

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.

• The selected mode is indicated in the function display.

Note: If a desired mode cannot be selected, it may be
hidden using Initial Set mode (p. 50).

OPERATING MODE SELECTION

MODE

Push

momentarily

MODE

Push

for 2 sec.

USB LSB

CW CWå

RTTY åRTTY

FM WFM AM

BAND FREQUENCY MODE

18 MHz 18.15000 MHz USB

21 MHz 21.30000 MHz USB

24 MHz 24.95000 MHz USB

28 MHz 28.60000 MHz USB

50 MHz 50.10000 MHz USB

144 MHz 145.00000 MHz FM

BAND FREQUENCY MODE

1.9 MHz

1.91000 MHz**

CW

3.5 MHz 3.56000 MHz LSB

7 MHz 7.06000 MHz LSB

10 MHz 10.13000 MHz CW

14 MHz 14.10000 MHz USB

General* 15.10000 MHz USB

BLANK

CH

VFO A

S1

5379204060dB

USB

S3

7

144

430

Display shows the
default bands for the
quick band change
function.

PO 5

10

BLANK

CH

VFO A

S1

5379204060dB

USB

S3

7

GEN

144

Display shows [F-2]
has been changed from
its default of the 50 MHz
band to the general
receiver band.

PO 5

10

430 MHz 433.00000 MHz FM

20

4

RECEIVE AND TRANSMIT

The IF shift function electronically changes the pass­band 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.

➀ Adjust the [SHIFT] control for a minimum interfer-

ence signal level.

• The audio tone may be changed while the IF shift is in
use.

➁ Set the shift control to its center position when

there is no interference.

• Graphic display

The IF shift is displayed graphically (for about 1 sec.)
each time the shift control is rotated.

M-CH M-CH M-CHSHIFT SHIFT SHIFT

Shifts low Center Shifts high

D RIT function

The RIT (Receive Incremental Tuning) function com­pensates for off-frequencies of communicating sta­tions. 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).

➀ Push [RIT].

• The [RIT] indicator lights red.

➁ Rotate the [M-CH] control to cancel the off-fre-

quencies.

• The transmit frequency is not shifted.

➂ To cancel the RIT function, push [RIT] again.

• The [RIT] switch indicator goes out.

• Calculate function

The shift frequency of the RIT function can be
added/subtracted to the displayed frequency.

While the RIT indicator is lit, push and hold [RIT] for
2 sec.

Note: The RIT function is not available in FM, WFM
or AM modes regardless of the Initial Set mode set­ting (p. 51).

[RIT] switch

Indicator lights red while
RIT function is activated.

Push for
2 sec.

[M-CH] control

USB

USB

CH

VFO A

S1

5379204060dB

USB

D IF shift function

■ Functions for receive

21

4

RECEIVE AND TRANSMIT

D Noise 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 pulse­type 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).

➀ Select M3.

• Push [DISPLAY] 1 or 2 times when S or G is displayed.

• Push [MENU] one or more times to select

M3.

➁ Push [(F-2)NB] to toggle the noise blanker ON and

OFF.

•“NB” appears when the noise blanker is turned ON.

NB

CH

VFO A

S1

5379204060dB

USB

M3

NAR

NB

MET

Appears when the
noise blanker is
turned ON.

PO 5

10

D AGC 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.

➀ Select M4.

• Push [DISPLAY] 1 or 2 times when S or G is displayed.

• Push [MENU] one or more times to select

M4.

➁ Push [(F-3)AGC] to toggle the AGC time constant

between fast and slow.

•“FAGC” appears when the fast time constant is selected.

CH

VFO A

S1

5379204060dB

USB

M4

VOX

COM

AGC

Appears when
AGC fast is
selected.

FAGC

PO 5

10

D Preamp 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.

The

attenuator prevents desired signals from distort-

ing when very strong signals are near the desired fre­quency or when very strong electric fields, such as
from broadcasting stations, are near your location.

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.

• 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.

D Peak meter hold

The peak meter hold function freezes the highest dis­played 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).

INITIAL SET MODE

S1

5379204060dB

S1

5379204060dB

Initial reception of a
signal results in an S­meter reading of 40
dB.

The highest indicated
bar remains displayed
for about 0.5 sec.
even when the signal
strength decreases.

[EXAMPLE]:

22

4

RECEIVE AND TRANSMIT

D RF gain and squelch

D Simple band scope

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).

The

RF (Radio Frequency) gain is used to adjust the

receiver gain.

• This control should be set to the 11 o’clock position for
normal use.

• 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.

• When operating in FM, first rotate the control fully coun­terclockwise. 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.

• A segment appears in the S-meter to indicate the S-meter
squelch level.

• [RF/SQL] control priority

AF RF/SQL

Max. RF gain position

RF gain
decreases

Same effect as at
the center position

AF RF/SQL

Deep

Squelch
opens

S-meter squelch
threshold point

Noise squelch
threshold point

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.

➀ Set a mode and frequency.
➁ Select G1.

• Push [DISPLAY] 1 or 2 times if M or S appears.

• Push [MENU] one or more times to select

G1.

➂ Push [F-1] one or more times to select the desired

steps.

• Each dot corresponds to a step for the indicated fre­quency.

• 0.5, 1, 2, 5, 10, 20 and 100 kHz can be set for the scope

step.

➃ Push [F-3] to start the sweep.

•“___” (below SWP) flashes while sweeping.

• The receive audio is muted while sweeping.

➄ Rotate the main dial if you want to monitor the dis-

played signals.

• 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 mark­er flashes.

➅ Push [F-2] to return the frequency to the start of a

sweep.

• The sweep marker moves back to the center position.

1k

SWP

2k

SWP

2k

SWP

2k

SWP

___

2k

SWP

Select sweep width
([F-1])

Start sweep
([F-3])

Sweep is finished
([F-3] again)

Move sweep marker
(main dial)

2k

SWP

Returns to previous
frequency ([F-2])

sweep marker

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.

Note: Use the attenuator or turn OFF the preamp when
using the band scope on a band containing a lot of noise.

Initial set mode
setting

USB, LSB,
CW, RTTY

AM, FM, WFM

SQL*

1

SQL SQL

AUTO RF GAIN SQL

RF • SQL*

2

RF/SQL RF/SQL

*1Default; *2Default for USA version.

Filter variations

*Optional filter.

Optional filter installation and selection tables

SSB

23

4

RECEIVE AND TRANSMIT

D Optional filter selection

Two optional filters can be installed in the IC­706MKIIG.

Narrow filters help reject interference from adjacent
signals and obtain good selectivity.

Wide filters provide improved audio for SSB opera­tion when no interfering signals are present.

Consult the table below to select a filter most suitable
for your operating needs.

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).

FILTER ON/OFF:

➀ Select M3.

• Push [DISPLAY] 1 or 2 times if G or S appears.

• Push [MENU] one or more times to select

M3.

➁ 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.

Note: When selecting the narrow filter, the graphic
passband is narrowed (see diagram below).

Normal
operation

narrow is
selected

FL-101* CW, RTTY 250 Hz/–6 dB

CW, RTTY 350 Hz/–6 dB

CW, RTTY 500 Hz/–6 dB

SSB, CW, RTTY 2.8 kHz/–6 dB

FL-223* SSB, CW, RTTY 1.9 kHz/–6 dB

SSB, CW, RTTY 2.4 kHz/–6 dB

AM, FM 8 kHz/–6 dB

Mode Band widthName

FIL 1

FIL 2

No

optional

filter

FL-100 FL-101 FL-103 FL-223 FL-232

No

optional

filter

W: –––
M: FL-272
N: –––

W: –––
M: FL-272
N: –––

W: –––
M: FL-272
N: –––

W:FL-103
M: FL-272
N: –––

W:–––
M: FL-272
N: FL-223

W: –––
M: FL-272
N: –––

FL-100

W: –––
M: FL-272
N: –––

W: –––
M: FL-272
N: –––

W: –––
M: FL-272
N: –––

W:FL-103
M: FL-272
N: –––

W:–––
M: FL-272
N: FL-223

W: –––
M: FL-272
N: –––

FL-101

W: –––
M: FL-272
N: –––

W: –––
M: FL-272
N: –––

W: –––
M: FL-272
N: –––

W:FL-103
M: FL-272
N: –––

W:–––
M: FL-272
N: FL-223

W: –––
M: FL-272
N: –––

FL-103

W: FL-103
M: FL-272
N: –––

W: FL-103
M: FL-272
N: –––

W: FL-103
M: FL-272
N: –––

W: FL-103
M: FL-272
N: –––

W: FL-103
M: FL-272
N: FL-223

W: FL-103
M: FL-272
N: –––

FL-223

W: –––
M: FL-272
N: FL-223

W: –––
M: FL-272
N: FL-223

W: –––
M: FL-272
N: FL-223

W:FL-103
M: FL-272
N: FL-223

W:–––
M: FL-272
N: FL-223

W: –––
M: FL-272
N: FL-223

FL-232

W: –––
M: FL-272
N: –––

W: –––
M: FL-272
N: –––

W: –––
M: FL-272
N: –––

W: FL-103
M: FL-272
N: –––

W: –––
M: FL-272
N: FL-223

W: –––
M: FL-272
N: –––

FIL 1

FIL 2

No

optional

filter

FL-100 FL-101 FL-103 FL-223 FL-232

No

optional

filter

W: –––
M: FL-272
N: –––

W: –––
M: FL-272
N: FL-100

W: –––
M: FL-272
N: FL-101

W:FL-103
M: FL-272
N: –––

W:–––
M: FL-272
N: FL-223

W: –––
M: FL-272
N: FL-232

FL-100

W: –––
M: FL-272
N: FL-100

W: –––
M: FL-272
N: FL-100

W: FL-272
M: FL-100
N: FL-101

W:FL-103
M: FL-272
N: FL-100

W:FL-272
M: FL-223
N: FL-100

W:FL-272
M: FL-100
N: FL-232

FL-101

W: –––
M: FL-272
N: FL-101

W: FL-272
M: FL-100
N: FL-101

W: –––
M: FL-272
N: FL-101

W:FL-103
M: FL-272
N: FL-101

W: FL-272
M: FL-223
N: FL-101

W:FL-272
M: FL-232
N: FL-101

FL-103

W: FL-103
M: FL-272
N: –––

W: FL-103
M: FL-272
N: FL-100

W: FL-103
M: FL-272
N: FL-101

W: FL-103
M: FL-272
N: –––

W: FL-103
M: FL-272
N: FL-223

W: FL-103
M: FL-272
N: FL-223

FL-223

W: –––
M: FL-272
N: FL-223

W:FL-272
M: FL-223
N: FL-100

W:FL-272
M: FL-223
N: FL-101

W:FL-103
M: FL-272
N: FL-223

W:–––
M: FL-272
N: FL-223

W:FL-272
M: FL-223
N: FL-232

FL-232

W: –––
M: FL-272
N: FL-232

W: FL-272
M: FL-100
N: FL-232

W: FL-272
M: FL-232
N: FL-101

W: FL-103
M: FL-272
N: FL-232

W: FL-272
M: FL-223
N: FL-232

W: –––
M: FL-272
N: FL-232

FL-100*

FL-232*

FL-94

FL-103*

FL-272

FM

Normal FL-23 + SFPC455E

Narrow FL-94

AM

Normal FL-94

Narrow FL-272

CW, RTTY

Table key:
W—wide position
M—medium (normal) position
N—Narrow position

24

4

RECEIVE AND TRANSMIT

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.

➀ Select S4 (DSP menu).

• Push [DISPLAY] 1 or 2 times when M or G is displayed.

• Push [MENU] one or more times to select

S4.

➁ Push [(F-1)ANF] to toggle the automatic notch filter

ON and OFF.

•“DSP” and “ANF” appear when the function is ON.

D NR (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.

➀ Select S4 (DSP menu).

• Push [DISPLAY] 1 or 2 times when M or G is displayed.

• Push [MENU] one or more times to select

S4.

➁ Push [(F-2)NR] to toggle the noise reduction func-

tion ON and OFF.

•“DSP” and “NR” appear when the function is ON.

➂ Push [(F-3)NRL] to toggle the noise reduction level

indication ON and OFF.

➃ Rotate the [M-CH] control to set the noise reduc-

tion level.

• 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 trans­ceiver maintains the ON/OFF condition when
pushing [(F-2)NR].

D ANF (Automatic Notch Filter) function

■ DSP Functions (may require an optional unit depending on version—see p. 61)

DSP

CH

VFO A

P

O

S1

5

5379204060dB

USB

BLANK

ANF

S4

ANF

NR

NRL

DSP

CH

VFO A

P

O

S1

5

5379204060dB

USB

BLANK

NR

S4

ANF

NR

NRL

S4

LEVEL 8

NRL

25

4

RECEIVE AND TRANSMIT

• Setting output power

➀

Push [DISPLAY] for 2 sec. to select quick set mode.

➁ Push [MENU] one or more times to select Q1 RF

POWER.

➂ 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.

➃ Push [DISPLAY] to exit quick set mode.

• Available power

*Carrier power

• Setting microphone gain

Microphone gain must be adjusted properly so that
your signal does not distort when transmitted.

➀ Select SSB or another phone mode.
➁

Push [DISPLAY] for 2 sec. to select quick set mode.

➂ Push [MENU] one or more times to select Q2 MIC

GAIN.

• The ALC meter is selected automatically when operat­ing in SSB mode.

➃ While speaking into the microphone adjust the mic

gain so that the ALC meter does not peak past the
ALC zone.

➄ Push [DISPLAY] to exit quick set mode.

USB

Q1 RF POWER

Maximum output power is
selected.

PO

S1

5

537920401060dB

Microphone gain is
set to 6.

ALC

S1

123

5379204060dB

USB

Q2

MIC GAIN

ALC

ALC zone

D Meter 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.

➀ Select M3.

• Push [DISPLAY] 1 or 2 times when S or G appears.

• Push [MENU] one or more times to select

M3.

➁ Push [(F-3)MET] one or more times to select the

desired meter function.

• The display indication changes as in the table at right.

D Output power and mic gain

■ Functions for transmit

Note: The SWR meter cannot be used for the 144/430

MHz bands since the meter activates for the [ANT 1] con­nector only.

BAND SSB/CW/RTTY/FM AM*

HF 5–100 W 4–40 W

50 MHz 5–100 W 4–40 W

144 MHz 2–20 W 2–8 W

DISPLAY

INDICATION

MEASUREMENT

Po

Indicates the relative RF output power.

ALC

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).

SWR

Indicates the SWR over the transmis­sion line.

26

4

RECEIVE AND TRANSMIT

D Speech 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 espe­cially useful for DX’ing when the receiving station is
having difficulty copying your signal.

➀ Select USB or LSB mode.
➁ 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.”

➂ Select the mic gain display in quick set mode.

• Push [DISPLAY] for 2 sec.

• Push [MENU] one or more times to select

Q2 MIC

GAIN

.

➃ Adjust the mic 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.

➄ Select M4.

• Push [DISPLAY] 1 or 2 times to select M, if necessary.

• Push [MENU] one or more times to select

M4.

➅ Push [(F-2)COM], then adjust [COMP GAIN] so that

the ALC meter reads within the ALC zone whether
you speak softly or loudly.

Note: When the ALC meter peaks above the ALC
zone, your transmitted voice may be distorted.

[MENU] [(F-2)COM]

[COMP GAIN]

COMP

GAIN /SIDE T

BEEP

ALC

Adjust [COMP GAIN] so that the ALC meter
reads within the ALC zone.

ALC zone

D VOX operation

The VOX (Voice-operated Transmission) function
toggles between transmit and receive with your
voice. This function provides an opportunity to input
log entries into your computer, etc., while operating.

➀ 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.

➁ Select VOX GAIN in quick set mode.

• Push [DISPLAY] for 2 sec. then push [MENU] one or
more times to select

Q4.

➂ While speaking into the microphone, adjust [VOX

GAIN] until the transceiver is transmitting.

➃ Select VOX DELAY in quick set mode.

• Push [MENU] one or more times to select Q3.

➄ While speaking into the microphone, adjust [VOX

DELAY] as desired.

➅ Select ANTI VOX in quick set mode.

• Push [MENU] one or more times to select Q5.

➆ 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.

➇ Push [DISPLAY] to exit quick set mode.

[MENU] [(F-1)VOX]

[DISPLAY]

main dial

27

4

RECEIVE AND TRANSMIT

The AT-180 automatic antenna tuner matches the IC­706MKIIG 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.

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.

TUNER OPERATION

• For the HF band:

Push [TUNER] to turn the tuner ON. The antenna is
tuned automatically during transmission when the
antenna SWR is higher than 1.5:1.

• When the tuner is OFF, the [TUNER] light goes out.

• 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.

MANUAL TUNING

During SSB operation on HF bands at low voice lev­els, 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 select­ed.

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)

Through inhibit (HF bands only)
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 high­er than 3:1 after tuning.

• Tuner sensitive condition (HF bands only)

If you require critical tuning at any time during trans­mission, select the tuner sensitive condition. See
p. 55 for selection.

• 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.

D Optional AT-180

AUTOMATIC ANTENNA TUNER

operation

[TUNER/CALL]

Lights to indicate the AT-180
is turned ON.

[TUNER/CALL]

Flashes to indicate re-tuning
is necessary.

CAUTION: NEVER transmit with the tuner ON

when no antenna is connected. This will damage
both the transceiver and the antenna tuner.

[TUNER/CALL]

Push and hold for 1 sec. to start
manual tuning.

CONVENIENT

28

4

RECEIVE AND TRANSMIT

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.

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 trans­ceiver. Note that the AH-4 cannot tune when using a

1

⁄2 λ long wire or multiple of the operating frequency.

Note: The AH-4 can be used for HF bands and the
50 MHz band only.

AH-4 operation

➀ Set the desired frequency in an HF band.

• The AH-4 will not operate on frequencies outside of
ham bands.

➁ Push and hold [TUNER] for 2 sec.

• The [TUNER] light flashes and “CW” appears while tun­ing.

➂ 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.

➃ To bypass the AH-4 manually, push [TUNER].

• PTT tune function

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]” oper­ation and activates first transmission on the new fre­quency. This function is turned ON in initial set mode,
item 13 (p. 54).

D Optional AH-4

AUTOMATIC ANTENNA TUNER

operation

AH-4 setting example:

For mobile operation

For outdoor operation

Long wire

Optional AH-2b
antenna element

RWARNING: HIGH VOLTAGE!

NEVER touch the antenna element while tuning or

transmitting.

Tuning is required for each frequency. Be sure to
re-tune the antenna before transmitting when you
change the frequency—even slightly.

USB

CW

Push [TUNER] for 2 sec.

CONVENIENT

29

4

RECEIVE AND TRANSMIT

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.

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).

➀ Select VFO A and set the frequency to 7.057

MHz/CW.

• [(F-2)A/B] is available when M1 appears.

• [

(F-3)V/M] is available when M2 appears.

➁ Push or push and hold [(F-1)SPL] in the M1 dis-

play.

➥ Push [SPL]: activates split only.
➥ Push and hold [SPL]: activates the quick split

below.

➂ To change the receive frequency, rotate the main

dial; to change the transmit frequency, rotate the
main dial while pushing [(F-3)XFC].

• The transmit frequency can be monitored while pushing
[

(F-3)XFC].

• Split operation is now set for receive on 7.057 MHz/CW
and transmit on 7.025 MHz/CW.

To exchange the transmit and receive frequencies,
push [(F-2)A/B] in M1.

CONVENIENT

The G3 display conveniently shows the transmit fre­quency during split frequency operation and [(F-3)Ñ]
allows you to change the transmit frequency.

• Split lock function

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 fre­quencies; or only the receive frequency. (p. 52)

D Quick split function

In M1, when you push [(F-1)SPL] for 2 sec., split fre­quency operation is turned ON and VFO B is auto­matically changed according to the plus/minus pre­programmed 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.

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 nor­mal split operation.

PROGRAMMING SPLIT SHIFT FREQUENCY

➀ Push [POWER] to turn power OFF.
➁ While pushing [LOCK], push [POWER] to turn

power ON and enter initial set mode.

➂ Select “SPL OFFSET” using [MENU], [M-CH] or

the [Y]/[Z] keys, then rotate the main dial to select
the desired split offset.

• The split offset can be selected from –4000 kHz to
+4000 kHz.

Note: This setting is not valid for FM operation. This
is because FM operation uses the duplex setting for
repeater operation (next page).

VFO A

CW

SPL

VFO A

CW

SPL

VFO B

CW

VFO A

VFO A

SPL

SPL SPL

SPL

VFO A

VFO B

VFO B

No shift frequency is programmed.

+10 kHz is programmed as a shift
frequency.

Push for 2 sec.

SPL

F-1

■ Split frequency operation

16 SPL OFFSET

30

4

RECEIVE AND TRANSMIT

D Repeater 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 fre­quency by an offset frequency. A repeater can be
accessed using split frequency operation with the
shift frequency set to the repeater’s offset frequency.

➀ 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.

➁ Push [MODE] one or more times to select FM

mode, then set the receive frequency.

➂ 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.

➃ Push [(F-1)SPL] for 2 sec. (in the M1 display) to

activate the split frequency function (duplex func­tion) with the pre-selected offset.

• When a subaudible tone frequency (excepting 1750 Hz)
is selected in

➂, “FM-T” is selected simultaneously.

➄ Push and hold [PTT] to transmit; release [PTT] to

receive.

• 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.

➅ To check the repeater input frequency (direct sig-

nal from the other station), push and hold
[(F-3)XFC] in the M1 display.

➆ To return to simplex operation, push [(F-1)SPL].

Each memory channel can store a tone frequency
(subaudible tones or a tone burst) and an offset fre­quency, as well as the operating frequency. Store
repeater information into memory channels for quick
and easy access to repeaters.

PROGRAMMING DUPLEX SHIFT FREQUENCY

➀ Push [POWER] to turn power OFF.
➁ While pushing [LOCK], push [POWER] to turn

power ON and enter initial set mode.

➂ Select “DUP 144M” using [MENU] or the

[UP]/[DN] keys, then rotate the main dial to select
the desired duplex offset.

• The duplex offset can be selected from –4000 kHz to
+4000 kHz.

12

QUICK SPLIT

Turn the quick split
function ON.
(Initial set mode default
is ON.)

Q6

RPTR TONE

Set the tone frequency
(quick set mode).

See p. 49 for setting de­tails and available fre­quencies.

FM T

SPL

CH

VFO A

S1

5379204060dB

FM T

M4 VOX DUP TON

PO 5

10

CONVENIENT

17 DUP 144M

31

4

RECEIVE AND TRANSMIT

Tone squelch operation is a method of communica­tions 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.

➀ Push [MODE] one or more times to select FM

mode.

➁ Push and hold [DISPLAY] to enter Quick Set mode.
➂ Push [MENU] one or more times to select item Q7

TONE SQL.

• [Y]/[Z] or [M-CH] can also be used.

➃ Rotate the main dial to select the desired subaudi-

ble tone frequency.

• Available tone frequencies are the same as for repeater
tone operation (see previous page).

➄ Select M4 and turn the tone squelch function ON.

➥ Push [(F-3)TON] to toggle tone squelch opera-

tion ON and OFF.

• When tone squelch is turned ON, “TSQL” appears in
the display.

➅ Communicate in the usual manner.

• Push [PTT] to transmit; release to receive.

By monitoring a signal that is being transmitted on a
repeater input frequency, you can determine the tone
frequency necessary to open a repeater.

➀ During tone squelch or repeater operation, push

and hold [DISPLAY] to enter Quick Set mode.

➁ 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.

➂ Push [(F-3)SCN] to toggle tone scan operation ON

and OFF.

• While scanning tone frequencies are displayed instead
of the operating frequency.

• When a matched tone is detected, tone scan automati­cally stops, the matched tone is displayed and the
repeater tone (or tone squelch tone) setting is automat­ically adjusted accordingly.

➃ Push [DISPLAY] to return to the main menu.

■ Tone squelch operation

■ Tone scan operation

Q7

TONE SQL

Set the tone frequency
(quick set mode).

See p. 49 for setting de­tails and available fre­quencies.

During tone squelch op­eration.

PO

S1

5

537920401060dB

FM TSQL

Q8

T-SQL

SCN

During repeater operation.

PO

S1

5

537920401060dB

FM T

Q8

RPTR-T

SCN

FM TSQL

SPL

CH

VFO A

S1

5379204060dB

M4 VOX DUP TON

PO 5

10

32

4

RECEIVE AND TRANSMIT

This function allows you to set repeater operation
with the push of one switch.

➀ Push [(Y)BAND]/[(Z)BAND] to select the 28 MHz

band.

➁ Rotate [DIAL] to select the operating frequency.
➂ Push [MODE] one or more times to select FM.
➃ Select M4 and turn the one-touch repeater function

ON.

➥ 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.

• Be sure to set the duplex direction and offset in ini­tial set mode in advance (p. 52).

• 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.

■ One-touch repeater function

This function automatically activates the repeater set­tings (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.

Set the auto repeater function ON or OFF in initial set
mode in advance (p. 53). When set ON, repeater set­tings are automatically activated according to the
table at right.

☞ NOTE:This function is available for the USA ver-

sion only.

■ Auto repeater function

FREQUENCY DUPLEX DIRECTION

145.200–145.495 MHz
“DUP–” appears

146.610–146.995 MHz

147.000–147.395 MHz “DUP+” appears

442.000–444.995 MHz “DUP+” appears

447.000–449.995 MHz “DUP–” appears

CH

VFO A

P

O

S1

5

537920401060dB

FM

BLANK

M1

SPL

A/B

A=B

CH

VFO A

DUP

P

O

S1

5

537920401060dB

FM T

BLANK

M4

VOX

DUP

TON

33

4

RECEIVE AND TRANSMIT

D Connections for CW

D CW operation

➀ Connect a paddle or straight key as above.
➁ Select CW (or CWå) mode with [MODE].
➂ Set CW break-in operation as semi break-in, full

break-in or OFF.

•

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:

➧ “F-BK”: full break-in
➧ “BK”: semi break-in
➧ No indicator: no break-in (ACC socket connection is

necessary as above.)

➃ Set the CW delay time when semi break-in opera-

tion is selected.

➥ 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).

CW

Q4 CW PADDLE

CW

CW

CW

CW

Paddle

[ELEC KEY]

[MICROPHONE]

See p. 34 for
connection details:

Paddle operation from
front panel MIC connector

.

Straight key

Microphone

Quick set mode settingRear panel

4

8

12

144/430 MHz

HF/50 MHz

[ACC]

123

765

9

10 11

13

For no break-in operation:

Connect an external switch such

as a foot switch; or use the

RTTY SEND terminal for all

bands. (See p. 35.)

■ Functions for CW

BK

VFO A

CW

CW

Q3

BK-IN

DELAY

M4

BRK1/4

AGC

CW mode and semi
break-in operation is
selected.

Delay time of 6.0 dots is
selected in quick set
mode for semi break-in
operation.

CH

PO

S1

5

537920401060dB

34

4

RECEIVE AND TRANSMIT

D CW 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 fre­quency.

➀ Push [MODE] one or more times to select CW

mode.

➁ Select CW PITCH in quick set mode.

• Push [DISP] for 2 sec. then push [MENU] one or more
times.

➂ Rotate the main dial to set the desired pitch.
➃ Push [DISPLAY] to exit quick set mode.

Q2

CW

PITCH

This shows the default
setting for the CW pitch
control (600 Hz).

CW

QUICK SET MODE

D CW 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.

➀ Push [MODE] one or more times to select CW

mode.

➁ Push and hold to toggle between CW and CWå

modes.

• Check the interference tone.

• Receive audio tone response

(Reverse) CWå

MODE

(Normal) CW

BFO

600 Hz

signal

inteference signal

600 Hz

BFO

inteference

D Electronic CW keyer

The IC-706MKIIG has an electronic keyer. Both key­ing speed and weight (the ratio of dot : space : dash)
can be set in quick set mode.

• Setting the electronic keyer

➀ Select CW mode with [MODE].
➁ Push [DISPLAY] for 2 sec. to enter quick set mode.
➂ Push [MENU] one or more times to select item Q4

CW PADDLE, then rotate the main dial to select
the paddle type.

• When “ud” is selected, the up/down switches on the
microphone can be used as a paddle.

➃ Push [MENU] two more times to select item Q6

RATIO, then rotate the main dial to select the

desired weight.

• Key weight can be selected from 2.8 to 4.5.

• Check the selected ratio with the side tone function in

CW mode.

➄

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 elec­tronic keyer from the front panel MIC connector.

• 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.

KEYING WEIGHT EXAMPLE: morse code “K”

*SPACE and DOT length can be adjusted with “Q5 KEY
SPEED” only.

DASH

Weight setting:
1:1:3 (default)

Weight setting:
Adjusted

DASH

DOT

(Fixed*)

Adjustable range SPACE (Fixed*)

QUICK SET MODE

front panel
MIC connector

MIC U/D

CW
paddle

DOT

E

DASH

➁

➆

3.9 kΩ ±5%

2.2 kΩ ±5%

35

4

RECEIVE AND TRANSMIT

D Connections for RTTY (FSK)

D Connections for AFSK

Rear panel

TU or TNC

Personal computer

Rear panel
view

Colors refer to connection
to the supplied ACC cable.

Use either the ACC or one of the two

1

/8˝ plugs

*

1

Connect SQL line when required.

SQL*1 (light green)
AF out (light blue)
MSEND*

2

GND (red)
FSKK (black)

GND

GND

AF

3-conductor

1

/8˝ plug (supplied)

2-conductor

1

/8˝ plug

FSKK

SEND

[RTTY]

[ACC]

[EXT SP]

12334

567

7

8

9101112

13

HF/50 MHz: orange

144 MHz: purple

*

2

■ Functions for RTTY

To a TU or TNC

and personal computer

Use either the ACC or microphone connector

SQL*

1

(light green)
AF out (light blue)
AF in (pink)
HSEND*

2

GND (red)

➇ SQL

To [MIC]

To [ACC]

1234

56778

9101112

13

➂ AF out

➃ PTT

➄ GND

➅ MIC

➆ GND

Rear panel
view

Colors refer to connection
to the supplied ACC cable.

*

1

Connect SQL line when required.

3

HF/50 MHz: orange

144 MHz: purple

*

2

36

4

RECEIVE AND TRANSMIT

D RTTY (FSK) operation

➀ Connect a terminal unit as at left.
➁ Select RTTY (or åRTTY—see bottom of page)

mode with [MODE].

➂ Select the desired FSK tone/shift frequencies and

keying polarity as below.

➃ Set the desired frequency with the main dial.

• Use [(F-1)1/4] in the M4 display when critical setting is

required.

➄ Operate the connected PC or TNC (TU).

PRESETTING FOR RTTY
Tone frequency

➀

Push [DISPLAY] for 2 sec. to select quick set mode.

➁ Push [MENU] one or more times to select Q2

RTTY TONE; then rotate the main dial to select

the desired tone frequency (p. 48).

Shift frequency

➀

Push [DISPLAY] for 2 sec. to select quick set mode.

➁ Push [MENU] one or more times to select Q3

RTTY SHIFT; then rotate the main dial to select

the desired shift frequency (p. 48).

RTTY keying

➀

Push [DISPLAY] for 2 sec. to select quick set mode.

➁ Push [MENU] one or more times to select Q4

RTTY KEYING; then rotate the main dial to

select the desired keying polarity (p. 48).

➀ Connect a terminal unit as at left.
➁ Select SSB (LSB) mode with [MODE].

• Generally, LSB is used on the HF bands and FM is
used for the VHF band.

➂ Select the desired FSK tone/shift frequencies and

keying polarity as below.

➃ Set the desired frequency with the main dial.

• Use [(F-1)1/4] in the M4 display when critical setting is
required.

➄ Operate the connected PC or TNC (TU).

PRESETTING FOR RTTY
Tone frequency

Same as above.

Shift frequency

Same as above.

RTTY keying

Same as above.

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.

CH

VFO A

R

TT

Y

M1

SPL A/B A=B

RTTY mode is selected.

PO

S1

5

537920401060dB

RTTY

Q2

RTTY TONE

RTTY mark frequency
is set to 2125 Hz.

2125 and 1615 Hz are
available.

RTTY

Q3

RTTY SHIFT

RTTY shift frequency is
set to 170 Hz.

170/200/425 Hz are
available.

RTTY

Q4

RTTY KEYING

RTTY keying is set to
‘normal’.

normal: key open=mark

key close=space

reverse: key open=space

key close=mark

D RTTY (AFSK) operation

ReverseNormal

BFO

170

Hz

2125

Hz

170

Hz

2125

Hz

BFO

mark

space

displayed freq.displayed freq.

mark

space

37

4

RECEIVE AND TRANSMIT

■ Packet operation

D Connections for packet

Rear panel

DATA

PTT

PTTP

DATA IN

SQL

RX AUDIO

GND

TX AUDIO

TNC SIDE

TU or TNC

RS-232C

Personal computer

q

w

e

y

t

r

AF OUT

DATA OUT

GND

SQ

q

w

e

y

t

r

PIN #/NAME DESCRIPTION

q DATA IN Communication data input.
w GND Ground for DATA IN, DATA OUT and AF OUT.
e PTTP Transmits when grounded.
r DATA OUT Outputs 9600 bps receive data.
t AF OUT Outputs 1200 bps receive data.

y SQ

Squelch output.

Goes to ground when squelch opens.

Rear panel view

D Adjusting 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).

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 cir­cuitry 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.

☞ NOTE: Read the instructions supplied with your

TNC carefully before attempting packet operation
with the IC-706MKIIG.

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

2. When not using a measuring device.

➀ Connect the IC-706MKIIG to a TNC.
➁ Enter a test mode (“CAL”, etc.) on the TNC, then

transmit some test data.

➂ 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:

Increase the TNC output level.

D Data socket

38

4

RECEIVE AND TRANSMIT

The IC-706MKIIG can measure SWR in 2 ways:
(A) Spot measurement; or (B) Plot measurement.

(A) Spot measurement

➀ Confirm that the output power is over 30 W.
➁ Push [MENU] one or more times to select M3.
➂ Push [(F3)MET] to select the SWR meter.
➃ Push [MODE] one or more times to select CW or

RTTY operation.

• Key down or push [PTT] to transmit; then read the actu­al SWR from the meter:

➠ ≤ 1.5 well matched antenna
➠ > 1.5 check antenna or cable connection, etc.

(B) Plot measurement

Plot measurement allows you to measure the SWR
over an entire band.

q Confirm that the output power is over 30 W.
w Push [DISPLAY] twice to select G1.
e Push [MENU] to select G2.
r Set the center frequency for the SWR to be mea-

sured.

t Push and hold [(F1)10k] one or more times to

select the desired frequency pitch.

y Push and hold [(F2)] one or more times to select

the desired step.

u After selecting the desired pitch and step, push

[(F3)STR] to measure the SWR.

i Push and hold [PTT] to display the SWR in a bar

graph readout.

o When [PTT] is released, the frequency marker and

frequency indication move to the next frequency to
be measured.

!0 Repeat steps i.and o to measure SWR over the

entire frequency range.

!1 When the measured SWR is less than 1.5, the

antenna is well matched.

■ SWR

The IC-706MKIIG has a built-in circuit for measuring
antenna SWR while in SSB mode—no external equip­ment or special adjustments are necessary.

☞ NOTE: The SWR of ANT1 only can be read since

ANT2 has no measuring circuit.

D Measuring SWR

CH

VFO A

SWRS11 1.5 2 3

5379

20 40 60dB

CW

BLANK

SWR 1 1.5 2 3 5

10

The best match is in this range.

∞

∞

M3

FIL

NB

MET

G2

10k

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 Indicates the currently active step bar.

Start Flashes while the SWR is being mea-

sured.

Step o

The antenna is well matched in this range

CH

VFO A

P

O

S1

5

5379

20 401060dB

USB

BLANK

G2

50k

STR

4.0
3

.

5

3

.

0

2

.

5

2

.

0

1

.

5

1

.

0

CH

VFO A

P

O

S1

5

5379

20 401060dB

BLANK

G2

50k

STR

STR

_

_

_

RTTY

Step y

39

5

MEMORY AND SCAN OPERATION

■ Memory channels

The transceiver has 105 memory channels (plus 2 call
channels). Memory mode is useful for quickly chang­ing to often-used frequencies.

All 105 memory channels are tuneable which means
the programmed frequency can be tuned temporarily
with the main dial, etc., in memory mode.

➀ Select M2 functions.

• Push [DISPLAY] 1 or 2 times to select M.

• Push [MENU] one or more times to select

M2.

➁ Push [(F-3)V/M] to select memory mode.
➂ Rotate [M-CH] to select the desired memory chan-

nel.

• All memory channels including blank channels can be
selected.

• [UP]/[DN] on the microphone changes the frequency.

➃ To return to VFO mode, push [(F-3)V/M] again.

Any unnecessary memory channels can be cleared.
The cleared memory channels become blank chan­nels.

➀ Push [(F-3)V/M] in the M2 display to select mem-

ory mode.

➁ Rotate [M-CH] to select a memory channel to be

cleared.

➂ Push [MCL(F-2)] for 2 sec. to clear the contents.

• The programmed frequency and operating mode disap­pear and “

}” appears.

➃ To return to VFO mode, push [(F-3)V/M] again.

■ Memory channel selection

■ Memory clearing

Note: During split frequency operation, programmed
memory contents can be called up to the SUB readout
(dot matrix portion of the display).

CW

CH

VFO A

[EXAMPLE]: Selecting memory channel 17.

V/M

F-3

USB

CH

MEMO

SPLIT

CH

MEMO

USB

M-CH SHIFT

MCL

F-2

SPLIT

Push for

2 sec.

CH

MEMO

USB

CH

MEMO

BLANK

MEMORY

CHANNEL

MEMORY

CHANNEL

NUMBER

CAPABILITY

TRANSFER

TO VFO

OVER-

WRITING

CLEAR

Regular

(split memory)

1–99

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.

Yes Yes Ye s

Scan edges

1A–3B

(3 pair)

One frequency and one mode in
each memory channel as scan
edges for programmed scan.

Yes Yes No

Call channel

(split memory)

C1 (144 MHz)
C2 (430 MHz)

Same as regular, but only 144/430
MHz band can be programmed.

Yes Yes No

40

5

MEMORY AND SCAN OPERATION

• Programming in VFO mode

➀ Select M2 functions.

• Push [DISPLAY] 1 or 2 times to select M.

• Push [MENU] one or more times to select the

M2 func-

tions.

➁ Set the desired frequency and operating mode in

VFO mode.

• If you want to program the split frequency function, pro­gram 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 fre­quencies.

➂ Rotate [M-CH] to select the desired memory chan-

nel, or the call channel (144/430 MHz bands only).

•

Select memory mode to confirm the contents, if desired.

•“}” appears if the selected memory channel is a

blank channel (and does not have contents).

➃ Push [(F-1)MW] for 2 sec. to program the displayed

frequency and operating mode into the memory
channel.

To check the programmed contents, push [

(F-3)V/M]

to select memory mode; or, push [CALL] to select the
call channel.

■ Memory/call programming

CW

CH

VFO A

[EXAMPLE]:

Programming 7.088 MHz/LSB into ch 12.

TS

MODE

MW

F-1

LSB

BLANK

SPLIT

CH

VFO A

LSB

CH

VFO A

LSB

CH

VFO A

Push for

2 sec.

M-CH SHIFT

• Programming in memory mode

➀ Set the desired frequency and operating mode.
➁ Select memory mode, then select the desired

memory channel with [M-CH].

• Push [Y]/[Z] when you want to program blank chan-
nels.

➂ Push [(F-1)MW] for 2 sec. to program the displayed

frequency and operating mode into the memory
channel.

CH

[EXAMPLE]:

Programming 21.280 MHz/USB into

ch 18.

TS

MODE

MW

F-1

SPLIT

Push for

2 sec.

CH

MEMO

USB

CH

MEMO

USB

CH

MEMO

CW

CH

MEMO

USB

M-CH SHIFT

41

5

MEMORY AND SCAN OPERATION

■ Frequency transferring

The frequency and operating mode can be transferred
from memory mode to VFO mode.

➀ Select VFO mode with [(F-3)V/M] in the M2 dis-

play.

➁ 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.

➂ Push [(F-2)MÜV] for 2 sec. to transfer the frequen-

cy and operating mode.

• Transferred frequency and operating mode appear in
the display.

•“

MÜV” does not appear in memory mode.

MÜV

F-2

SPLIT

Push for

2 sec.

[EXAMPLE]: Transferring contents of memory 16.

Operating frequency: 21.320 MHz/USB (VFO)
Contents of memory 16: 14.020 MHz/CW

CH

VFO A

USB

CH

VFO A

USB

CH

VFO A

CW

M-CH SHIFT

■ 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 punc­tuation marks.

• Calling up memory names

➀ Select the G4 display.

➥ Push [DISPLAY] 1 or 2 times to select G.
➥ Push [MENU] one or more times to select the

G4 display.

➁ Select a memory channel with [M-CH].

• Editing (programming) memory names

➀ Call up the desired memory (channel) name as

above.

➁ Push [(F-3)É] to enter memory name edit mode.

•“name edit” appears briefly, then a flashing cursor
appears under the first character position.

➂ 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-2)] overwrites the character with a space.

➃ Repeat this procedure until all desired characters

have been selected.

➄ Push [(MENU)Ä] to exit memory name edit mode.

• The G4 display reappears and the programmed mem-
ory name is displayed.

G4 memory name

G4

G4 Repeater É

ÄÅÖ

name edit

É

F-3

Ç

F-3

Ç

F-3

Ä

MENU

ÄÅR

Ç

Ç

ÄÅRe

Ç

ÄÅRepeaterÖ

Ç

É

42

5

MEMORY AND SCAN OPERATION

• 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.

When you call up a frequency and an operating
mode from memo pads with [(F-3)MPR], the previ­ously displayed frequency and operating mode are
automatically stored in a temporary pad. The fre­quency and operating mode in the temporary pad
can be recalled by pushing [(F-3)MPR] one or more
times.

Note: If you change the frequency or operating mode
called up from a memo pad, the frequency and oper­ating mode in the temporary pad are erased.

VFO or
MEMORY
mode

MEMO PADS

MPR

F-3

MPR

F-3

USB

USB

USB

USB

USB

USB

MP5

MP4

MP3

MP2

MP1

■ Memo pads

The transceiver has a memo pad function to store fre­quency and operating mode for easy write and recall.
The memo pads are separate from memory channels.

The default number of memo pads is 5, however, this
can be increased to 10 in initial set mode if desired
(p. 53).

Memo pads are convenient when you want to memo­rize 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 tem­porarily search for other stations.

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

➀ Select the S1 display.

• Push [DISPLAY] 1 or 2 times to select S.

• Push [MENU] one or more times to select

S1.

➁ Push [(F-2)MPW] to program the frequency into a

memo pad.

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 set­tings.

Note: Each memo pad must have its own unique
combination of frequency and operating mode;
memo pads having identical settings cannot be writ­ten.

Displayed frequency and mode

Push

Newest

MP5

MP4

MP3

MP2

MP1

The oldest written frequency
and mode are erased.

Oldest

MPW

F-2

USB

USB

USB

USB

USB

USB

43

5

MEMORY AND SCAN OPERATION

■ Scan types

■ Preparation

• Channels

For programmed scan: Program scan edge frequen-

cies into scan edge memory channels 1A and 1B
(p. 34).

For memory scan: Program 2 or more memory chan-

nels except scan edge memory channels.

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 dis­play (memory mode) to designate the channel as a
select memory channel.

For priority watch: Program 1 memory channel to be

watched.

• 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 con­dition details.

• Scan speed

Scan speed can be selected from 2 levels, high or low,
in initial set mode. See p. 47 for details.

• Squelch condition

PROGRAMMED SCAN

Repeatedly scans between two scan edge frequencies
(scan edge memory channels 1A and 1B).

This scan operates in VFO mode.

SELECTED MEMORY SCAN

Repeatedly scans all selected memory channels.

PRIORITY WATCH

Checks for signals on a memory or call channel while
operating on a VFO frequency.

This scan operates in memory mode.This scan operates in memory mode.

This scan operates in VFO mode.

Scan

Scan edge 1A or 1B Scan edge 1B or 1A

Jump

Mch 1 Mch 5

Memory channel watch Call channel watch

Memory
channel

VFO

frequency

Mch 2 Mch 3 Mch 4

Mch 6Mch 7Mch 99

MEMORY SCAN

Repeatedly scans all programmed memory channels.

Mch 1 Mch 5

Mch 2 Mch 3 Mch 4

Mch 6Mch 7Mch 99

BLANK

S (select)

S (select)S (select)

S (select)

S (select)

S (select)

S (select)S (select)

S (select)

S (select)

BLANK

Call

channel

VFO

frequency

SCAN

STARTS

WITH

PROGRAMMED

SCAN

MEMORY SCANS

PRIORITY WATCH

SQUELCH

OPEN

The scan continues
until it is stopped
manually, and does
not pause even if it
detects signals.

This is not applicable
when the scan
resume is OFF and a
programmable step
(more than 1 kHz) is
selected.

Scan pauses on each
channel when the
scan resume is ON;
not applicable when
OFF.

SQUELCH

CLOSED

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 disap­pears while scan is paused, scan resumes 2
sec. later.

44

5

MEMORY AND SCAN OPERATION

➀ Select VFO mode, then set a frequency.
➁ Close the squelch with [SQL].
➂ Set the desired memory channel as the watching

channel.

➃ Select S2, then push [(F-2)PRI] to start the watch.

• Decimal point blinks while scanning.

➄ When the scan detects a signal, the scan pauses

for 10 sec. or until the signal disappears, depend­ing on the resume setting.

➅ To cancel the scan 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.
resume off: pauses until the signal disappears.

➀ Select memory mode.
➁ Close the squelch with [SQL].
➂ Select S2, then push [(F-1)SCN] to start the mem-

ory scan.

• Decimal point blinks while scanning.

➃ Push [(F-2)SEL] to change the memory scan to

select memory scan.

• Push [(F-2)SEL] for 2 sec. to clear all select memory

channels.

➄ When the scan detects a signal, the scan stops or

pauses depending on the resume setting.

➅ To cancel the scan push [(F-1)SCN].

Note: Two or more memory channels must be desig­nated as select memory channels for select memory
scan to start.

S2 SCN

SEL V/M

Select
memory mode

Designate
“S.”

F-1

F-2

Push [(F-1)SCN], then [(F-2)SEL].

CH

S

MEMO

PO

S1

5

537920401060dB

USB

➀ Select memory mode.
➁ Close the squelch with [SQL].
➂ Select S2, then push [(F-1)SCN] to start the scan.

• Decimal point blinks while scanning.

➃ When the scan detects a signal, the scan stops or

pauses depending on the resume setting.

➄ To cancel the scan push [(F-1)SCN].

Note: Two or more memory channels must be pro­grammed for memory scan to start.

S2 SCN

SEL V/M

Select
memory mode

F-1

then push [(F-1)SCN]

CH

MEMO

PO

S1

5

537920401060dB

USB

➀ Select VFO mode.
➁ Select the desired operating mode.

• The operating mode can also be changed while scan­ning.

➂ Set [SQL] open or closed.

• See page a left for squelch condition.

➃ Select S2, then push [(F-1)SCN] to start the scan.

• Decimal point blinks while scanning.

➄ 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.

➅ To cancel the scan push [(F-1)SCN].

Note: If the same frequencies are programmed into
the scan edge memory channels 1A and 1B, pro­grammed scan does not start.

■ Programmed scan operation

■ Memory scan operation

■ Select memory scan operation

S2 SCN

PRI V/M

Select
VFO mode

Select watching
channel

F-2

Push [(F-2)PRI].

CH

PO

S1

5

537920401060dB

USB

VFO A

■ Priority watch

CH

VFO A

PO

S1

5

537920401060dB

USB

S2 SCN PRI V/M

Select
VFO mode

F-1

then push [(F-1)SCN]

45

6

REMOTE JACK (CI-V) INFORMATION

D CI-V connection example

The transceiver can be connected through an option­al CT-17 CI-

V LEVEL CONVERTER

to a personal comput­er equipped with an RS-232C port. The Icom
Communication interface-V (CI-V) controls the follow­ing 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.

D Data format

The CI-V system can be operated using the following
data formats. Data formats differ according to com­mand numbers. A data area is added for some com­mands.

Personal
computer

IC-706MKIIG

CT-17

9–15 V DC

CONTROLLER TO IC-706MKIIG

FE FE 58 E0 Cn Sc Data area FD

(see table at right)

(see table at right)

Command number

Preamble code (fixed)

Controller’s default address

Transceiver’s default address

Sub command number

IC-706MKIIG TO CONTROLLER

FE FE E0 58 Cn Sc Data area FD

OK MESSAGE TO CONTROLLER

FE FE 58 E0 FB FD

memory number entry

End of message code (fixed)

BCD code data for frequency or

NG MESSAGE TO CONTROLLER

FE FE 58 E0 FA FD

OK code (fixed)

Preamble code (fixed)

Controller’s default address

Transceiver’s default address

End of message code (fixed)

Command number

Preamble code (fixed)

Controller’s default address

Transceiver’s default address

(see table at right)

(see table at right)

Sub command number

BCD code data for frequency or

memory number entry

End of message code (fixed)

NG code (fixed)

Preamble code (fixed)

Controller’s default address

Transceiver’s default address

End of message code (fixed)

46

6

REMOTE JACK (CI-V) INFORMATION

*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 opera­tion; when wide, normal and narrow operation is available, add “00”
for wide operation, “01” for normal operation and “02” for narrow
operation.

*2Memory channel number 1A=0100/1b=0101, 2A=0102/2b=0103,

3A=0104/3b=0105, C1=0106, C2=0107.

COMMAND TABLE

Cn Sc Description

00 — Send frequency data
01 xx Send mode data
02 — Read band edge frequencies
03 — Read display frequency
04 — Read display mode
05 — Set frequency data

00*

1

Set LSB

01*

1

Set USB

02*

1

Set AM

06 03*

1

Set CW

04*

1

Set RTTY

05*

1

Set FM

06*

1

Set WFM
— Set to VFO
00 Set to VFO A

07 01 Set to VFO B

A0 VFO A=B
B0 Switch VFO A and B

08

— Set to memory mode
mc*

2

Mch

09 — Memory write
0A — Memory to VFO
0B — Memory clear
0C — Read duplex offset frequency
0D — Set duplex offset frequency

Cn Sc Description

0E

00 Scan stop
01 Scan start
00 Split OFF
01 Split ON

0F 10 Simplex mode

11 Duplex mode
12 Duplex + mode
00 10 Hz TS
01 100 Hz TS
02 1 kHz TS
03 5 kHz TS
04 9 kHz TS

10 05 10 kHz TS

06 12.5 kHz TS
07 20 kHz TS
08 25 kHz TS
09 100 kHz TS

11 xx ATT ON/OFF; 00=OFF; 20=ON

15

01 Read squelch condition
02 Read S-meter level
02 Preamp setting
12 AGC setting

16 22 NB setting

42 TONE setting
43 TSQL setting
44 COMP setting
46 VOX setting
47 BK-IN setting

19 00 Read transceiver ID code

47

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.

D Quick set mode operation

➀ 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.

➁ Push [MENU] one or more times to select the

desired item.

• [M-CH] or [Y]/[Z] can also be used.

➂ Rotate the main dial to set the values or conditions

for the selected item.

➃ Repeat steps ➁ and ➂ to set other items.
➄ To exit quick set mode, push [DISPLAY] momentar-

ily.

D Initial set mode operation

➀ Push [POWER] for 2 sec. to turn power OFF.
➁ While pushing [LOCK] push [POWER] to turn power

ON.

• Initial set mode is selected and one of its items appears.

➂ Push [MENU] one or more times to select the

desired item.

• [M-CH] or [Y]/[Z] can also be used.

➃ Rotate the main dial to set the values or conditions

for the selected item.

➄ Repeat steps ➂ and ➃ to set other items.
➅ To exit initial set mode, push [POWER] for 2 sec. to

turn power OFF.

➆ Push [POWER] to turn power ON again.

• The conditions selected in initial set mode are now effec­tive.

[POWER]

[MENU] [LOCK]

Main dial

Item number

Item

Value or
condition

1

MODE SELECT

[DISPLAY EXAMPLE: INITIAL SET MODE]

[M-CH]

[Y]

[Z]

Q1 RF POWER

USB

[POWER]

[MENU]

[M-CH]

[DISPLAY]

Main dial

[Y]

[Z]

Item number

Item

Value or
condition

[DISPLAY EXAMPLE: QUICK SET MODE]

PO

S1

5

537920401060dB

48

7

SET MODE

Q4 RTTY KEYING (RTTY only)

This item adjusts the RTTY keying. Normal or
reverse keying can be selected.

The default is “n,” normal.

Normal : key open=mark
Reverse : key open=space

RTTY

■ Quick set mode items

Q1 RF POWER (all modes)

This item adjusts the RF output power. The RF out­put power can be adjusted from L, 1 to 9 and H for
indication, however, it can be adjusted continuously.

Q2 MIC GAIN (SSB/AM/FM only)

This item adjusts microphone gain from 1 to 10 for
indication, however, it can be adjusted continuously.

The default is 5.

Note that while adjusting mic gain, the
ALC meter is displayed automatically.

The default is H (maximum power).

Note that while adjusting the output
power, the power meter is displayed
automatically.

Q2 CW PITCH (CW only)

This item adjusts the CW pitch. CW pitch is
adjustable from 300 to 900 Hz in 10 Hz steps.

The default is 600 Hz.

CW

Q2 RTTY TONE (RTTY only)

This item selects the RTTY tone. RTTY tone is tog­gled between 1275, 1615 and 2125 Hz.

The default is 2125 Hz.

RTTY

Q3 VOX DELAY (SSB/AM/FM only)

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.

USB

Q3 BK-IN DELAY (CW only)

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.

CW

Q3 RTTY SHIFT (RTTY only)

This item adjusts the RTTY shift. There are 3 selec­table values: 170, 200 and 425 Hz.

The default is 170 Hz.

RTTY

Q4 VOX GAIN (SSB/AM/FM only)

This item adjusts the VOX gain for the VOX (voice
activated transmit) function.

USB

The default is 5.

49

7

SET MODE

Q6 CARRIER Frq (SSB only)

This item adjusts the carrier frequency (BFO frequen­cy), allowing you to change the audio characteristics.
Selectable values are –200 to +200 Hz in 10 Hz steps.

USB

The default is 0 Hz.

Q6 RPTR TONE (FM only)

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

The default is 88.5 Hz.

FM

Q4 CW PADDLE (CW only)

This item adjusts the CW paddle type. Four selec­tions are available.

• n : normal (for electronic keyer use)

• r : reverse (for electronic keyer use)

• buG : When using the electronic key, key down

produces a “dash,” releasing the key auto­matically produces a “dot(s).”

• oFF : Turns OFF the electronic keyer (for
straight key use)

• ud : For using the microphone’s [UP]/[DN]
keys instead of the CW paddle.

The default is “n,” normal.

CW

Q5 KEY SPEED (CW only)

This item adjusts the CW key speed. The key speed
can be selected from 6 to 60 wpm.

The default is 20 wpm.

CW

Q6 RATIO (CW only)

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.

CW

Q7 TONE SQL (FM only)

This item adjusts sets a subaudible tone for tone
squelch use. (the same subaudible tone frequencies
as for repeater operation are available—see above).

The default is 88.5 Hz.

FM

67.0 79.9 94.8 110.9 131.8 156.7 171.3 186.2 203.5 229.1

69.3 82.5 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

Q5 ANTI VOX (SSB/AM/FM only)

This item adjusts the ANTI-VOX gain for the VOX
(voice activated transmit) function.

USB

The default is 5.

50

7

SET MODE

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.

■ Initial set mode items

2 BEEP (confirmation beep)

A beep sounds each time a switch is pushed to con­firm it. This function can be turned OFF for silent
operation.

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).

Confirmation beep ON
(default)

Confirmation beep OFF

Band beep ON
(default)

Band beep OFF

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.

Q8 RPTR-T SCN (repeater tone scan)

During repeater operation, you can detect the tone
frequency necessary to open a repeater (see p. 30).

The default is 88.5 Hz.

FM

Q8 T-SQL SCN

(tone squelch tone scan)

During tone squelch operation, you can detect the
tone frequency necessary to communicate using
tone squelch (see p. 31).

The default is 88.5 Hz.

FM

51

SET MODE

7

11 PEAK HOLD (peak hold)

When the peak hold function is ON, the highest acti­vated segment of the meter remains visible for 0.5
sec.; when OFF, the meter functions normally.

Peak hold ON
(default)

Peak hold OFF

6 AUTO OFF (auto power OFF)

The auto power OFF function can be used to auto­matically 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 set to
20 min.

Auto power OFF
deactivates. (default)

7 RF/SQL (SQL/AUTO/RF•SQL)

The [RF/SQL] control can be set as the squelch con­trol (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 [M­CH] changes the RIT frequency; when this item is set
to “Freq,” pushing [RIT/SUB] turns the sub dial func­tion 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
installation.

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
installation.

No filters are selected
(default).

FL-223 (for LSB/USB mode)
is selected.

No filters are selected
(default).

FL-223 (for LSB/USB mode)
is selected.

52

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.

Duplex direction is set
to –duplex.

Duplex direction is set to
+duplex.

DUP DUP

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.

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

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.

7

SET MODE

53

SET MODE

7

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 activat­ed); when turned “oFF,” the display goes directly to
frequency indication at power ON.

Power on check ON
(default)

Power on check OFF

24 AM NB (Noise blanker in AM mode)

When this item is set to ON, the noise blanker func­tion is available in AM mode. This is useful when
communicating in AM mode (the noise blanker func­tion 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

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.

22 SCAN SPEED (scan speed)

This item sets the rate at which channels or frequen­cies are scanned during scan operations. High or low
can be selected.

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.

Scan speed is set to high
(default).

Scan speed is set to low.

Up/down speed is set to
high (default).

Up/down speed is set to low.

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 priori­ty watch, setting to OFF pauses the watch until sig­nal disappears and scan resumes.

Scan resume function is
turned ON (default).

Scan resume function is
turned OFF.

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.

54

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

“U only”: VSEND is for 430 MHz; HSEND is for

HF/50/144 MHz

“oFF”: VSEND is not used; HSEND is for all

bands.

The default is VSEND is for the 144/430 MHz band;
HSEND is for the HF/50 MHz band.

31 SPEECH LANG

When the optional UT-102

VOICE SYNTHESIZER UNIT

is
installed, you can select between English and
Japanese as the language.

32 SPEECH SPD

When the optional UT-102

VOICE SYNTHESIZER UNIT

is
installed, you can select between faster or slower
synthesizer output.

Voice synthesizer functions
in English (default).

Voice synthesizer functions
in Japanese.

Voice synthesizer output
is faster (default).

Voice synthesizer output
is slower.

(voice synthesizer language)

(voice synthesizer speed)

28 PTT TUNE

(PTT tune function)

When an optional AH-4

ANTENNA TUNER

is connect­ed, tuning can be started automatically at the
moment the PTT is pushed.

27 A-TUNE STRT

(auto tuner start)

The optional AT-180

ANTENNA TUNER

has an auto­matic start capability which starts tuning if the SWR
is higher than 1.5–3.

When “oFF” is selected, the tuner remains OFF even
when the SWR is poor (1.5–3).

When “on” is selected, automatic tune starts even
when the tuner is turned OFF.

Note: Even when “on” is selected, automatic tune
does not start for the 50 MHz band.

Auto tune function OFF
(default).

Auto tune function ON.
Tuning starts when pushing [PTT]

on a new frequency.

Tuning starts only when
[TUNER] is pushed

(default)

.

7

SET MODE

55

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.

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.

• This item

MUST

be set to “on” only when operating trans-

ceiver with the IC-735.

Frequency data set to
5 bytes (default).

Frequency data set to
4 bytes.

36 CI-V TRN (CI-V transceive)

Transceive operation is possible with the IC­706MKIIG 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 trans­ceivers (or receivers) and vice versa.

Transceive ON
(default)

Transceive OFF

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.

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 IC­706MKIIG 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.

Address set to 58H
(default).

Address set to 7FH.

Auto baud rate
(default)

19200 bps

56

8

MAINTENANCE

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.

■ 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.

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

DC POWER CABLE FUSE REPLACEMENT

30 A fuse

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.

■ Memory backup

All of the CPU’s memory is backed up by an EEP­ROM (Electronically-Erasable Programmable Read­Only Memory). All data you set, such as VFO, mem­ory, set mode contents, etc. is stored in this EEP­ROM. There is no internal lithium battery.

■ Cleaning

4 A Fuse

57

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

POWER SUPPLY

RECEIVE

POSSIBLE CAUSE SOLUTION REF.

Power does not come
on when the [POWER]
switch is pushed.

No sound comes from
the speaker.

Sensitivity is low.

Receive audio is distor­ted.

Receive signal is distor­ted with strong signals.

DC power cable is improperly
connected.

Fuse is blown.

Battery is exhausted if you are using
a 12 V battery as the power source.

Reconnect the power cable correctly.

Check for the cause, then replace the
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.

Check the battery voltage with the
[POWER] pushed IN.

p. 13

p. 56

—

p. 1

p. 1

—

p. 12

p. 12

—

—

p. 14

pgs. 27,
28

p. 21

p. 19

p. 20

p. 21

p. 21

Volume level is set too low.

The squelch is closed.

The transceiver is in the transmitting
condition.

An external speaker or headphones
are connected.

The antenna is not connected properly.

The antenna feed line is cut or shorted.

The antenna for another band is
selected.

The antenna is not properly tuned.

The attenuator function is activated.

The operating mode is not selected
correctly.

The [SHIFT] control is set off-center.

Noise blanker function is activated.

Preamp is activated.

Rotate [AF] clockwise to obtain a suit­able listening level.

Rotate [SQL] counterclockwise to
open the squelch.

Release [PTT] on the microphone or
check the SEND line of an external
unit, if connected.

Check the external speaker or head­phone plug connection.

Check the speaker ON/OFF switch or
speaker A/B switch, when an optional
SP-20

EXTERNAL SPEAKER is in use.

Reconnect to the antenna connector.

Check the feed line and correct any
improper conditions.

Select an antenna suitable for the
operating frequency.
Make sure that [ANT1] is used for
frequencies less than 60 MHz and
[ANT2] is used for frequencies of 60
MHz and above.

Push [TUNE] to manually tune the
antenna.

Push [ATT] to turn the function OFF.

Select a suitable operating mode.

Set [SHIFT] to the center position.

Push [NB] to turn the function OFF.

Push [P.AMP] to turn the function
OFF.

58

9

TROUBLESHOOTING

PROBLEM

TRANSMITDISPLAYSCAN

POSSIBLE CAUSE SOLUTION REF.

Transmitting is impossi­ble.

Output power is too low.

No contact possible with
other stations.

Repeater cannot be ac­cessed.

Transmitted signals are
distorted.

Displayed frequency
does not change proper­ly.

Programmed scan does
not stop.

Programmed scan does
not start.

Memory scan does not
start.

Memory select scan
does not start.

The operating frequency is not set to
a ham band.

Power is set to a lower power than
maximum.

Microphone gain is set too low.

The antenna is not connected properly.

The antenna feed line is cut or shorted.

An antenna for another band is selec­ted.

The antenna is not properly tuned.

RIT function is activated.

Split function is activated.

Split function is not activated.

An incorrect transmit frequency is set.

Subaudible tone encoder is OFF and
repeater requires a tone for access.

Programmed subaudible tone fre­quency is wrong.

Microphone gain is set too high.

[COMP LEVEL] is rotated too far
clockwise with the speech compres­sor ON.

The dial lock function is activated.

The internal CPU has malfunctioned.

Squelch is open.

The same frequencies have been
programmed in scan edge memory
channels.

2 or more memory channels have not
been programmed.

2 or more memory channels have not
been designated as select channels.

Set squelch to the threshold position.

Programm different frequencies into
scan edge memory channels.

Program 2 or more memory chan­nels.

Designate 2 or more memory chan­nels as select channels for the scan.

Set gain in quick set mode.

Set [COMP LEVEL] to a suitable pos­ition.

Push [LOCK] to deactivate the func­tion.

Reset the CPU.

(While pushing [UP] and [DN] push [POW­ER] to turn power ON.

Push [DUP] to turn the function ON

.

Set the proper frequencies into VFO
A and B or into one of the memory
channels.

Use [TON] to select FM-T.

Program the required frequency using
quick set mode.

Push RIT to turn the function OFF.

Push [SPLIT] to turn the function OFF.

Set the output power in quick set
mode.

Set microphone gain to a suitable
position using quick set mode.

Reconnect the antenna connector.

Check the feed line and correct any
improper conditions.

Select an antenna suitable for the op­erating frequency.

Push [TUNE] to manually tune the
antenna when an optional antennal
tuner is connected.

Set the frequency to a ham band.

p. 17

p. 44

p. 44

—

—

p. 14

pgs. 27,
28

p. 20

p. 29

p. 29

p. 17

p. 30

p. 49

p. 48

p. 5

p. 2

p. 15

p. 23

p. 44

p. 41

p. 44

59

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.

■ UT-102

VOICE SYNTHESIZER UNIT

The UT-102 announces the accessed band’s fre­quency, mode, etc. (S-meter level can also be
announced—p. 55) in a clear, electronically generat­ed voice, in English (or Japanese).

➀ Remove the top cover as shown above.
➁ Connect the UT-102 as shown in the diagram at

right (label side up).

➂ Replace the top cover.

UT-102

Caution: Disconnect the DC power cable from

the transceiver before performing any work on the
transceiver.

60

10

OPTIONAL INSTALLATIONS/SETTINGS

■ CR-282

HIGH-STABILITY CRYSTAL UNIT

By installing the CR-282, the total frequency stability
of the transceiver will be improved.

➀ Remove the bottom cover as shown on the oppo-

site page.

➁ Remove the 5 screws and 2 flat cables holding the

PLL unit in place.

➂ Remove the existing crystal unit.
➃ Put the CR-282 in the space available as shown in

the diagram.

➄ Adjust the reference frequency at L601 using a fre-

quency counter (60.00000 MHz).

➅ Return the shield case and bottom cover to their

original positions.

CR-282 frequency stability: ±0.5 ppm

(–30°C to +60°C;

–22°F to +140°F)

■ IF filters

Several IF filters are available for the IC-706MKIIG.
Choose a filter most appropriate to your operating
needs.

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

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

➀ Remove the top cover as shown on the previous

page.

➁ Install the desired filter as shown in the diagram

below.

• These filters can be installed in either direction.

➂ Replace the top cover.

Filter

PLL unit

CR-282

Reference freq. check point

(60.00000 MHz)

ribbon
cable

ribbon
cable

existing
crystal

L601

PLL unit (bottom)

61

OPTIONAL INSTALLATIONS/SETTINGS

10

■ UT-106

DSP RECEIVER UNIT

D Installation

➀ Open the transceiver case as shown on p. 59.
➁ 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).

➂ Plug the 4-pin connector (P1) from the UT-106 into

J1413 on the MAIN unit.

➃ 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.

➄ Attach the UT-106 to the PLL unit, using the exist-

ing guide for alignment, as illustrated at right.

➅ Reassemble the transceiver.

DOperation

Refer to the instructions supplied with the UT-106 for
operating details.

■ MB-72

CARRYING HANDLE

The optional MB-72

CARRYING HANDLE

is convenient
when carrying the transceiver for DX’peditions, field
operation, etc.

➀ Remove the 2 screws from the right side of the

transceiver as shown below.

➁ Replace those with 2 supplied screws plus rubber

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.

➂ Attach the MB-72 to the left side of the transceiver

as shown below.

rubber
feet

carrying
handle

J1

P251

MAIN unit

UT-106

unit position

PLL unit

Remove the J1431 connector
from the PLL unit and replace
with the UT-106 connector

Be careful of the orientation
when connecting the
ribbon cable.

P1

J1431

P253

P1

J3

J1

62

■ 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.

➀ Remove the top cover of the AT-180.
➁ Set the tuner switches to the desired positions

according to the table below.

•

Specifications for the AT-180

• Frequency coverage : 1.9–54 MHz

• Input impedance : 50 Ω

• Maximum input : 120 W

power

• Minimum tuning : 8 W
power

• Matching impedance : 16.7–150 Ω (HF band)
range 20–125 Ω (50 MHz band)

• Tuning accuracy : Less than SWR 1.5:1

• Insertion loss : Less than 1.0 dB

(after tuning)

• Power supply : 13.8 V DC/1 A (supplied from
requirements the transceiver’s ACC socket)

• Dimensions (mm/in) : 167(W) × 58.6(H) × 225(D)

69⁄16(W) × 25⁄17(H) × 87⁄8(D)

• Weight : 2.4 kg; 5 lb 4 oz

• Supplied accessories : coaxial cable (1 m),

ACC cable (DIN 13 pins)

• AT-180 inside top cover

• Connector information for ACC(2) socket

S2 S1

DC BA

ACC 2

1

2

3

4

76

5

PIN NO./
NAME

DESCRIPTION

➀ 8 V

Regulated 8 V output.
(10 mA max.)

➁ GND

Connects to ground.

➂ SEND

Input/output pin.
Goes to ground when transmitting (20 mA
max). When grounded, transmits.

➃ BAND

Band voltage output.
(Varies with amateur band; 0 to 8.0 V).

➄ ALC

ALC output voltage (–4 to 0 V).

➅ NC

No connection.

➆ 13.8V

13.8 V output when power is ON (1 A max).

SW Position Operation

S1

A

(default)

The tuner operating condition is set by S2
described below.

B

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 tun­ing 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

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.

D

(default)

NORMAL CONDITION

The tuner tunes when the SWR is higher
than 1.5:1. Therefore, the tuner activates
only when tuning is necessary.

10

OPTIONAL INSTALLATIONS/SETTINGS

63

11

INTERNAL VIEWS

The internal speaker has
been removed in this
diagram for illustration
purposes.

FM deviation adj.

AM Tx carrier adj.

HF Tx power adj.

50 MHz Tx power adj.

NB sencitivity adj.

ID APC adj.

144 MHz Tx power adj.

430 MHz Tx power adj.

FILTER unit

MAIN unit

PLL unit

HF Final amplifier
(SRFJ7044 x 2)

PA unit

Reference freq. adj. (L601)
(when optional crystal
is installed)

Optional crystal (CR-282)

Reference freq. check point
(60.000 MHz)

144/430 MHz Final amplifier
(SRFJ7044)

D Top view

D Bottom 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.

64

12

OPTIONS

IC-PW1 HF + 50 MHz 1 kW LINEAR AMPLIFIER

Full-duty 1 kW linear amplifier
including an automatic antenna
tuner. Has automatic tuning and
band selection capability. Full
break-in (QSK) operation is pos­sible. The amplifier/power supply
unit and the remote control unit
are separated. The OPC-599 is
necessary to connect the IC­706MKIIG to the IC-PW1.

AT-180 HF/50 MHz AUTOMATIC

ANTENNA TUNER

Fully automatic antenna tuner with preset
memories for each 100 kHz. Unique “auto­matic tuner on” function is available. See
p. 62 for AT-180 specifications.

HM-118T HAND MICROPHONE

Includes DTMF keypad, hand microphone.

SM-20 DESKTOP MICROPHONE

Includes [UP]/[DOWN] switches and a low
cut function. The OPC-589 is necessary to
use this microphone.

MB-65 MOUNTING BASE

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.

AH-2b ANTENNA ELEMENT

A 2.5 m long antenna
element for mobile
operation with the
AH-3.

• Frequency
coverage

3.5–28 MHz band
with the AH-3

SM-8 DESKTOP MICROPHONE

Including 2 connection cables for simulta­neous connection of 2 transceivers. Has
[UP]/[DOWN] switches. The OPC-589 is
necessary to use this microphone.

MB-63 MOUNTING BRACKET

Metal plate for attaching the front panel to
a wall or other such flat surface.

AH-4 HF AUTOMATIC ANTENNA

TUNER

Specially designed to tune a long wire
antenna for portable or mobile HF/50 MHz
operation. The “PTT tune” function pro­vides simple operation.

• Input power rating: 150 W

PS-85 DC POWER SUPPLY

Light weight switching regulator system
power supply.

• Output voltage: 13.8 V DC

• Max. current drain: 20 A

MB-62 MOBILE MOUNTING

BRACKET

Mounts the transceiver main body, with or
without the front panel, inside a vehicle.

65

12

OPTIONS

CR-282 HIGH-STABILITY CRYSTAL UNIT

Contains a temperature-compensating oven heater and crystal unit
for frequency stability.

• Frequency stability: ±0.5 ppm (–10°C to +60°C; +14°F to +140°F)

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

Standard hand microphone.

OPC-599 ADAPTER CABLE

13-pin, ACC connector to 7-pin + 8-pin ACC connector.

OPC-742 ACC 13-PIN CABLE

Required when using both the AT-180 and a 2 m linear
amplifier.

MB-72 CARRYING HANDLE

Convenient when carrying the transceiver.

UT-102 VOICE SYNTHESIZER UNIT
UT-106 DSP RECEIVE UNIT

SP-21 EXTERNAL SPEAKER

External speaker designed for base station
operation.

• Input impedance: 8 Ω

• Max. input power: 5 W

OPC-581 SEPARATION CABLE
OPC-587 SEPARATION 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)

SP-10 EXTERNAL SPEAKER
SP-12 EXTERNAL SPEAKER

External speakers suitable for mobile oper­ation.
SP-12: Slim-type; 8 Ω/3 W
SP-10: Compact-type; 4 Ω/5 W

CT-17 CI-V LEVEL CONVERTER

UNIT

For remote transceiver control using a per­sonal computer equipped with an RS-232C
port. You can change frequencies, operat­ing mode, memory channels, etc., via your
computer.

SP-7 EXTERNAL SPEAKER

Compact speaker for base station opera­tion. Height can be adjusted for your con­venience.

• Input impedance: 8 Ω

• Max. input power: 5 W

CT-16 SATELLITE INTERFACE

UNIT

Easy tuning when connecting another Icom
VHF transceiver for instant satellite com­munications.

OPC-589 MICROPHONE ADAPTER

CABLE

Conversion between 8-pin modular and 8­pin metal connector for using a desktop
microphone with the IC-706MKIIG.

SP-20 EXTERNAL SPEAKER

Equipped with 4 types of audio filters, a
headphone jack and can be connected to 2
transceivers.

• Input impedance: 8 Ω

• Max. input power: 5 W

SP-12 SP-10

PS-125 DC POWER SUPPLY

Light weight switching regulator system
power supply.

• Output voltage: 13.8 V DC

• Max. current drain: 25 A

66

13

SPECIFICATIONS

■ GENERAL

• Frequency coverage : Receive
30 kHz– 199.999999 MHz*
400–470.000 MHz*

Transmit

1.800– 1.99999 MHz*

3.500– 3.9999 MHz*

7.000– 7.300 MHz*

10.100– 10.150 MHz

14.000– 14.350 MHz

18.068– 18.168 MHz

21.000– 21.450 MHz

24.890– 24.990 MHz

28.000– 29.700 MHz

50.000– 54.000 MHz*

144.000– 148.000 MHz*

430.000– 450.000 MHz*
*Depending on version.

• Mode : SSB, CW, AM, FM, WFM, RTTY

(WFM is for receive only)

• 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).
Temperature fluctuations (0°C to
+50°C; +32°F to +122°F) less than
± 5 ppm.

• Power supply : 13.8 V DC ±15% (negative ground)

requirement

• Current drain : Transmit 20 A

(at 13.8 V DC) Receive squelched 1.8 A

max. audio 2.0 A

• Dimensions : 167(W)

× 58(H) × 200(D) mm

6

9

⁄16(W) × 25⁄16(H) × 77⁄8(D) in

(projections not included)

• Weight : 2.45 kg (5 lb 6 oz)

• CI-V connector : 2-conductor 3.5 (d) mm (

1

⁄8˝)/8 Ω

• ACC connector : 13-pin

■ TRANSMITTER

• Output power :

SSB, CW, FM, RTTY 5 –100 W

(1.8–50 MHz bands)

5–50 W (144 MHz band)
2–20 W (430 band)

AM 2–40 W (1.8–50 MHz bands)

2–20 W (144 MHz band)
2–8 (430 band)

• Modulation system :

SSB Balanced modulation
AM Low level modulation
FM 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 : 8-pin modular jack (600 Ω)

connector

• KEY connector : 3-conductor 6.35 (d) mm (

1

⁄4")

• RTTY connector : 3-conductor 3.5 (d) mm (

1

⁄8")

■ RECEIVER

• Receive system :
SSB, CW, AM, RTTY Double-conversion superheterodyne
WFM
FM Triple-conversion superheterodyne

• Intermediate frequencies:

• Sensitivity

(pre-amp ON):

• Squelch sensitivity

(threshold; preamp ON) :

SSB Less than 5.6 µV
FM Less than 0.3 µV

• Selectivity* :

SSB, CW, RTTY More than 3.0 kHz/–6 dB

Less than 4.8 kHz/–60 dB

AM/FM-N More than 8.0 kHz/–6 dB

Less than 30.0 kHz/–40 dB

FM More than 12.0 kHz/–6 dB

Less than 30.0 kHz/–60 dB
*Without optional filter and with

mid band selected.

• Spurious and image rejection ratio:

HF More than 70 dB
50 MHz More than 65 dB

(except IF through)

144/430 MHz More than 65 dB

• Audio output power : More than 2.0 W

at 10% distortion

with an 8 Ω load

• RIT variable range : ±9.99 kHz max.

• PHONES connector : 3-conductor 3.5 (d) mm (

1

⁄8˝)/8 Ω

• EXT SP connector : 2-conductor 3.5 (d) mm (

1

⁄8˝)/8 Ω

MODE 1st 2nd 3rd
SSB 69.0115 MHz 9.0115 MHz

—

AM 69.0100 MHz 9.0100 MHz

—

AM-N 69.0115 MHz 9.0115 MHz

—

RTTY 69.0105 MHz 9.0105 MHz

—

FM 69.0115 MHz 9.0115 MHz 455 kHz

FM-N 69.0100 MHz 9.0100 MHz 455 kHz
WFM 70.7000 MHz 10.7000 MHz

—

CW 69.0106 MHz 9.0106 MHz

—

Frequency

range

SSB/CW

10 dB S/NAM10 dB S/NFM12 dB SINAD

WFM

12 dB SINAD

0.5–1.8 MHz — 13 µV — —

1.8–28 MHz

0.15 µV 2.0 µV

— —

28–29.7 MHz

0.5 µV —

50 MHz band 0.12 µV 1.0 µV 0.25 µV —

76–108 MHz — — — 10.0 µV

144/430 MHz

bands

0.11 µV 1.0 µV 0.18 µV —

67

14

MENU GUIDE

Initial set mode

No. Indication Description

1 MODE SELECT
2 BEEP
3 BAND BEEP
4 BACK LIGHT
5 KEY LIGHT
6 AUTO OFF
7 RF/SQL
8 SUB DIAL
9 OPT.FIL 1
10 OPT.FIL 2
11 PEAK HOLD
12

QUICK SPLIT

Mode availability
Confirmation beeps

Band edge beeps

Display backlighting

Key backlighting

Auto power OFF function

RF gain/squelch control

Sub dial RIT function

Speech synthesizer lang.

Speech synthesizer speed

Speech synthesizer S-meter

Meter peak function

[UP]/[DN] speed

Auto tune start function

No. Indication Description

13 SPLIT LOCK

PTT tune function

14 SPL OFFSET
15 DUP HF
16 DUP 50M
17 DUP 144M

18 DUP 430M
19 1TOUCH RPTR

No. of memory pads

20 AUTO RPTR
21 SCAN RESUME
22 SCAN SPEED
23 U/D SPEED
24 AM NB
25 PAD CH
26 PWR ON CHK
27 A-TUNE STRT
28

VSEND SEL

29

SPEECH LANG

30

SPEECH SPD

31
32
33

S-LVL SPC

34

CI-V ADDRES

35

CI-V BAUD

36

CI-V TRN

37

CI-V 731

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)

One touch repeater

Scanning speed

Auto repeater function

Scan resume condition

Optional filter 1

Optional filter 2

Power ON check function

AM noise blanker

PTT TUNE
9600 MODE

Packet data speed

ACC output selection

CI-V address assignment

Data transfer rate

CI-V transceive

CI-V 731

+ power ON

Power OFF then ON to exit initial set mode.

MENU

MENU

Y

Z

LOCK

68

14

MENU GUIDE

M1 SPL A/B

XFC

A=B

M2 MW MÜV

MCL

V/M

M3 FIL NB MET

M4 VOX COM AGC

VOXM4 COM TON

1/4

1/4

M4 AGC

BRKM4 AGC

S1 MW MPW MPR

S2 SCN PRI

SEL

V/M

Quick set mode

For 2 sec.

MENU

MENU

(SSB/AM)

(when split
is ON)

(in memory
mode)

(in memory mode)

(CW)

(RTTY)

(FM)

S3 7 50 144

S4 ANF NR NRL

G1 BAND scope

G2 IF SHIFT

G3 TX freq.

G4 Memory name

DISPLAY

DISPLAY

DISPLAYDISPLAY

MENU

MENU

Y

Y

M-CH

No.

Q1 RF POWER RF POWER RF POWER
Q2 MIC GAIN CW PITCH

RTTY TONE

Q3 VOX DELAY

VOX GAIN

BK-IN DELAY RTTY SHIFT

Q6

RATIO

Q7

Q4

CARRIER Freq*

1

CW PADDLE RTTY KEYING

SSB/AM/FM mode

RPTR TONE*

2

TONE SQL*

2

CW mode RTTY mode

Q8

RPTR-T*

3

T-SQL*

4

Q5 KEY SPEED

ANTI VOX

*

1

SSB mode only; *2FM mode only; *3FM mode only/tone encoder ON;

*

4

FM mode only/tone squelch ON.

MODE

DISPLAY

A-5564H-1EX-r
Printed in Japan
Copyright © 2001 by Icom Inc.

1-1-32 Kamiminami, Hirano-ku, Osaka 547-0003, Japan

Count on us!

ABOUT CE

•Version and frequency coverage

Europe (#02, #12)
Tx 1.800000 – 1.850000

3.500000– 3.800000

7.000000– 7.100000

10.100000– 10.150000

14.000000– 14.350000

18.068000– 18.168000

21.000000– 21.450000

24.890000– 24.990000

28.000000– 29.700000

50.000000– 52.000000

144.000000– 146.000000

430.000000– 440.000000

Rx 0.030000– 29.999999

50.000000– 52.000000

144.000000– 146.000000

430.000000– 440.000000

Spain (#04,#14)
Tx 1.830000 – 1.850000

3.500000– 3.800000

7.000000– 7.100000

10.100000– 10.150000

14.000000– 14.350000

18.068000– 18.168000

21.000000– 21.450000

24.890000– 24.990000

28.000000– 29.700000

50.000000– 50.200000

144.000000– 146.000000

430.000000– 440.000000

Rx 1.830000– 1.850000

3.500000– 3.800000

7.000000– 7.100000

10.100000– 10.150000

14.000000– 14.350000

18.068000– 18.168000

21.000000– 21.450000

24.890000– 24.990000

28.000000– 29.700000

50.000000– 50.200000

144.000000– 146.000000

430.000000– 440.000000

France (#03,#13)
Tx 1.810000 – 1.850000

3.500000– 3.800000

7.000000– 7.100000

10.100000– 10.150000

14.000000– 14.350000

18.068000– 18.168000

21.000000– 21.450000

24.890000– 24.990000

28.000000– 29.700000

50.200000– 51.200000

144.000000– 146.000000

430.000000– 440.000000

Rx 1.810000– 1.850000

3.500000– 3.800000

7.000000– 7.100000

10.100000– 10.150000

14.000000– 14.350000

18.068000– 18.168000

21.000000– 21.450000

24.890000– 24.990000

28.000000– 29.700000

50.200000– 51.200000

144.000000– 146.000000

430.000000– 440.000000

Italy (#10,#20)
Tx 1.830000 – 1.850000

3.500000– 3.800000

7.000000– 7.100000

10.100000– 10.150000

14.000000– 14.350000

18.068000– 18.168000

21.000000– 21.450000

24.890000– 24.990000

28.000000– 29.700000

50.000000– 51.000000

144.000000– 146.000000

430.000000– 434.000000

435.000000– 438.000000

Rx 1.830000– 1.850000

3.500000– 3.800000

7.000000– 7.100000

10.100000– 10.150000

14.000000– 14.350000

18.068000– 18.168000

21.000000– 21.450000

24.890000– 24.990000

28.000000– 29.700000

50.000000– 51.000000

144.000000– 146.000000

430.000000– 434.000000

435.000000– 438.000000
(UNIT: MHz)

DECLARATION

OF CONFORMITY

We Icom Inc. Japan

1-1-32 Kamiminami, Hirano-ku,
Osaka 547-0003 Japan

Kind of equipment: HF/

VHF/UHF ALL MODE TRANSCEIVER

This compliance is based on conformity according to Annex III of the
RTTE Directive 1999/5/EC using the following harmonised standards:
i) Article 3.1a

EN 60950 + A11

ii) Article 3.1b EN 301489-1 and EN 301489-15
iii) Article 3.2 EN 301 783-2
iv)
v)

Type-designation: i706MKIIG

Signature

Authorized representative name

Place and date of issue

T. Aoki
General Manager

Icom (Europe) GmbH

Himmelgeister straße 100
D-40225 Düsseldorf

Düsseldorf 13th Mar. 2001

Icom (Europe) GmbH

Declare on our sole responsibility that this equipment complies with the
essential requirements of the Radio and Telecommunications Terminal
Equipment Directive, 1999/5/CE, and that any applicable Essential Test
Suite measurements have been performed.

Version (where applicable):

•About DC power supply.

The use of IC-706MKIIG (#02, #12, #03, #13, #04, #14,

#10, #20) in combination with The DC power supply com­plies with European Harmonised Standard regulations
under the conditions listed below.

Conditions

•In combination with PS-125

•When connected to a power supply via OPC-639

•

About IC-PW1

LINEAR AMPLIFIER

and SP-10,

SP-12, SP-20, SP-21

EXTERNAL SPEAKERS

.

The IC-PW1

LINEAR AMPLIFIER

and The SP-10, SP-12, SP-

20, SP-21

EXTERNAL SPEAKERS

do not comply with Euro­pean Harmonised Standard regulations. Please do not use
these equipments within European countries.

INSTALLATION NOTES

For amateur base station installations it is recom­mended that the forwards clearance in front of the an­tenna array is calculated relative to the EIRP (Effective
Isotropic Radiated Power). The clearance height below
the antenna array can be determined in most cases
from the RF power at the antenna input terminals.

As different exposure limits have been recommended
for different frequencies, a relative table shows a
guideline for installation considerations.

Below 30 MHz, the recommended limits are specified
in terms of V/m or A/m fields as they are likely to fall
within the near-field region. Similarly, the antennae
may be physically short in terms of electrical length
and that the installation will require some antenna
matching device which can create local, high intensity
magnetic fields. Analysis of such MF installations is
best considered in association with published guidance
notes such as the FCC OET Bulletin 65 Edition 97-01
and its annexes relative to amateur transmitter instal­lations. The EC recommended limits are almost identi­cal to the FCC specified ‘uncontrolled’ limits and tables
exist that show pre-calculated safe distances for differ­ent antenna types for different frequency bands. Fur­ther information can be found at http://www.arrl.org/.

•Typical amateur radio installation

Exposure distance assumes that the predominant ra­diation pattern is forwards and that radiation vertically
downwards is at unity gain (sidelobe suppression is
equal to main lobe gain). This is true of almost every
gain antenna today . Exposed persons are assumed to
be beneath the antenna array and have a typical
height to 1.8 m.

The figures assume the worst case emission of con­stant carrier.

For the bands 10 MHz and higher the following power
density limits have been recommended:

10 – 400 MHz 2 W/sq m

435 MHz 2.2 W/sq m

EIRP Clearance heights by frequency band

Watts 10–2 m 70 cm 23 cm 13cm and above

1 2.1 m 2 m 2 m 2 m
10 2.8 m 2.7 m 2.5 m 2.3 m
25 3.4 m 3.3 m 2.7 m 2.5 m

100 5 m 4.7 m 3.6 m 3.2 m

1000 12 m 11.5 m 7.3 m 6.3 m

Forward clearance, EIRP by frequency band

Watts 10–2 m 70 cm 23 cm 13cm and above

100 2 m 2 m 1.1 m 0.7 m

1000 6.5 m 6 m 3.5 m 3 m

10,000 20 m 18 m 11 m 7 m

100,000 65 m 60 m 35 m 29 m

In all cases any possible risk depends on the transmit­ter being activated for long periods. (actual recom­mendation limits are specified as an average during 6
minutes) Normally the transmitter is not active for long
periods of time. Some radio licenses will require that a
timer circuit automatically cuts the transmitter after 1–2
minutes etc.

Similarly some types of transmitter, SSB, CW, AM etc.
have a lower ‘average’ output power and the assessed
risk is even lower.

Versions of the IC-706MKIIG which display the
“CE” symbol on the serial number seal, comply
with the essential requirements of the European
Radio and Telecommunication Terminal Direc ­tive 1999/5/EC.

This warning symbol indicates that this equip­ment operates in non-harmonised frequency
bands and/or may be subject to licensing con­ditions in the country of use. Be sure to check
that you have the correct version of this radio or
the correct programming of this radio, to com­ply with national licensing requirement.

 GER
 AUT
 GBR
 IRL

 FRA

 NED

 BEL

 LUX

 ESP
 POR

 ITA
 GRE

 SWE

 DEN
 FIN

< Intended Country of Use >

 GER
 AUT
 GBR
 IRL
 FRA

 NED

 BEL
 LUX

 ESP

 POR

 ITA
 GRE
 SWE
 DEN
 FIN

< Intended Country of Use >

IC-706MKIIG
#02, #12
(Europe)

IC-706MKIIG
#04 ,#14
(Spain)

 GER
 AUT
 GBR
 IRL

 FRA

 NED

 BEL
 LUX
 ESP
 POR

 ITA

 GRE

 SWE
 DEN
 FIN

< Intended Country of Use >

 GER
 AUT
 GBR
 IRL
 FRA

 NED

 BEL
 LUX
 ESP
 POR

 ITA

 GRE
 SWE
 DEN
 FIN

< Intended Country of Use >

IC-706MKIIG
#03, #13
(France)

IC-706MKIIG
#10, #20
(Italy)

1-1-32 Kamiminami, Hirano-ku, Osaka 547-0003 Japan

Count on us!

A-6045H-1EU Printed in Japan

© 2001 Icom Inc.

ABOUT SP-7 EXTERNAL SPEAKER

Cable fastener

pull

If the SP-7 external speaker is used with the IC-706MKIIG, please install the fer­rite supplied bead on the speaker cable, as shown below.

• A ferrite bead and a cable fastener are supplied with IC-706MKIIG.

INSTALLATION NOTE:

• Install the ferrite bead as near as possible the connecting plug.

• Attach the ferrite bead making a loop with the cable as shown in the diagram at
below left.

• Fasten the ferrite bead and speaker cable with the supplied cable fastener.

1-1-32 Kamiminami, Hirano-ku, Osaka 547-0003 Japan

Count on us!

A-6045H-2EU Printed in Japan

© 2001 Icom Inc.