Icom IC-M710 User Manual

INSTRUCTION MANUAL

HF MARINE TRANSCEIVER

iM710

IMPORTANT

DISPOSAL

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-M710.

EXPLICIT DEFINITIONS

The explicit definitions described below apply to this
instruction manual.

WORD DEFINITION

RWARNING

CAUTION

NOTE

Personal injury, fire hazard or electric
shock may occur.

Equipment damage may occur.

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

PRECAUTIONS

The crossed-out wheeled-bin symbol on
your product, literature, or packaging re­minds you that in the European Union, all
electrical and electronic products, batter­ies, and accumulators (rechargeable bat-

teries) must be taken to designated
collection locations at the end of their working life. Do
not dispose of these products as unsorted municipal
waste. Dispose of them according to the laws in your
area.

Icom, Icom Inc. and the Icom logo are registered trademarks of
Icom Incorporated (Japan) in Japan, the United States, the United
Kingdom, Germany, France, Spain, Russia, Australia, New Zealand,
and/or other countries.

RWARNING! NEVER connect the transceiver di-

rectly to an AC outlet. This may pose a fire hazard or
result in an electric shock.

RWARNING! NEVER mount the transceiver over-

head. The weight of the transceiver is approximately

7.8 kg. (17.4 lb), but its apparent weight will increase
several fold due to wave shocks and vibration. The
transceiver must be mounted on a flat hard surface
only.

NEVER connect a power source of more than 16 V
DC, such as a 24 volt battery. This connection will ruin
the transceiver.

NEVER place the transceiver where normal opera­tion of the ship or vehicle may be hindered or where it
could cause bodily injury.

NEVER allow children to play with equipment contain­ing a radio transmitter.

NEVER expose the transceiver to rain, snow or any
liquids.

NEVER install the IC-M710 into a positive-grounding
ship. Such a connection might blow fuses, and is not
usable.

DO NOT use chemical agents such as benzene or al­cohol when cleaning, as they can damage the trans­ceiver’s surfaces.

i

In maritime mobile operation, KEEP the transceiver
and microphone as far away as possible (at least 1 m)
from the magnetic navigation compass to prevent er­roneous indications.

USE an Icom microphone and/or handset only (sup­plied or optional). Other brands may have different pin
assignments and may damage the transceiver.

DO NOT use or place the transceiver in areas with
temperatures below –20°C (–4°F) or above +60°C
(+140°F).

DO NOT connect the transceiver to a power source
using reverse polarity. This connection will not only
blow fuses but may also damage the transceiver.

DO NOT place the transceiver in excessively dusty en­vironments, or in direct sunlight.

DO NOT place the transceiver against walls, or putting
anything on top of the transceiver. This will obstruct
heat dissipation.

Icom is not responsible for the destruction, damage to, or
performance of any Icom or non-Icom equipment, if the
malfunction is because of:

• Force majeure, including, but not limited to, fires,
earthquakes, storms, floods, lightning, other natural
disasters, disturbances, riots, war, or radioactive
contamination.

• The use of Icom transceivers with any equipment that is
not manufactured or approved by Icom.

TABLE OF CONTENTS

IMPORTANT ······························································i
PRECAUTIONS ·························································i
EXPLICIT DEFINITIONS ············································ i
DISPOSAL ·································································i
TABLE OF CONTENTS ············································ ii

1 OPERATING RULES AND GUIDELINES ·············1

2 PANEL DESCRIPTION ······································ 2–5

■ Front panel ··························································2

■ Display ································································5

3 SELECTING A CHANNEL/FREQUENCY ·········6–8

■ Selecting a channel ············································· 6

D Using the channel selector ······························ 6
D Using the keypad ············································ 7
D Using scan function ········································· 7

■ Selecting a frequency ·········································· 8

D Using the channel selector ······························ 8
D Using the keypad ············································ 8

4 RECEIVE AND TRANSMIT ·····························9–11

■ Basic voice receive and transmit ·························9

■ Functions for transmit ·········································· 9

D Transmit frequency check ······························· 9
D Transmit power selection ································ 9

■ Functions for receive ········································· 10

D Squelch function ··········································· 10
D Noise blanker ················································ 10
D AGC OFF function ········································ 10
D RF gain setting ·············································· 10
D Clarity control ················································ 10

■ CW operation (Depends on versions) ···············11

■ FSK operation (Depends on versions) ··············11

5 USER CHANNEL PROGRAMMING ···················· 12

■ Programming a frequency ·································12

D Receive Frequency ······································· 12
D Transmit frequency ······································· 12
D Channel name ··············································· 12

6 SET MODE ····················································· 13–15

■ Set mode operation ···········································13

■ Set mode contents ············································13

7 CONNECTIONS AND INSTALLATION ········· 16–22

■ Connections on the rear panel ··························16

■ Unpacking ·························································16

■ Connector information ·······································17

■ Ground connection ············································19

■ Power source ····················································19

■ Antenna ····························································· 20

D MN-100/MN-100L ANTENNA MATCHERS 20
D AT-130 AUTOMATIC ANTENNA TUNER·····20
D Non-Icom tuner ············································· 20

■ Mounting ···························································21

D Mounting location ·········································· 21
D Mounting example ········································· 21
D Transceiver dimensions ································ 21

■ Disassembling the transceiver ··························22

D Opening the case ·········································· 22

■ Fuse replacement ·············································22

D DC power cable fuse ·····································22
D Circuitry fuse ················································· 22

8 TROUBLESHOOTING ········································· 23

9 SPECIFICATIONS AND OPTIONS ·····················24

■ Specifications ····················································24

D GENERAL ····················································· 24
D TRANSMITTER ············································ 24
D RECEIVER ···················································· 24

■ Options ······························································ 24

ii

1

OPERATING RULES AND GUIDELINES

❑ CALL PROCEDURES

Calls must be properly identified and time limits must
be respected.

q Give your call sign each time you call another ves-

sel or coast station. If you have no call sign, identify
your vessel name and the name of the licensee.

w Give your call sign at the end of each transmission

that lasts more than 3 minutes.

e You must break and give your call sign at least once

every 15 minutes. during long ship-to-shore calls.

r Keep your unanswered calls short, less than 30

seconds.

Do not repeat a call for 2 minutes.

t Unnecessary transmissions are not allowed.

❑ PRIORITIES

q Read all rules and regulations pertaining to priori-

ties and keep an up-to-date copy handy. Safety and
distress calls take priority over all others.

w False or fraudulent distress calls are prohibited and

punishable by law.

❑ PRIVACY

q Information overheard but not intended for you can-

not be lawfully used in any way.

w Indecent or profane language is prohibited.

❑ LOGS

q All distress, emergency and safety calls must be re-

corded in complete detail. Log data activity is usu­ally recorded in 24 hour time. Universal Time (UTC)
is frequently used.

w Adjustments, repairs, channel frequency changes

and authorized modifications affecting electrical
operation of the equipment must be kept in the
maintenance log; entries must be signed by the au­thorized licensed technician performing or supervis­ing the work.

❑ RADIO LICENSES

(1) SHIP STATION LICENSE
You must have a current radio station license before
using the transceiver. It is unlawful to operate a ship
station which is not licensed.

Inquire through your dealer or the appropriate govern­ment agency for a Ship-Radiotelephone license appli­cation. This government-issued license states the call
sign which is your craft’s identification for radio pur­poses.

(2) OPERATOR’S LICENSE
A Restricted Radiotelephone Operator Permit is the li­cense most often held by small vessel radio operators
when a radio is not required for safety purposes.

The Restricted Radiotelephone Operator Permit must
be posted or be kept with the operator. Only a licensed
radio operator may operate a transceiver.

However, non-licensed individuals may talk over a
transceiver if a licensed operator starts, supervises,
and ends the call, and makes the necessary log en­tries.

Keep a copy of the current government rules and reg­ulations handy.

1

■ Front panel

MICROPHONE

POWER

VOLUME

TX FREQ

2182KHz

RESET

MODE

TUNE

SSB RADIO TELEPHONE

AGC SQL

CLARITY

NB

SPEAKER

[ALARM] [TX FREQ]+

FOR ALARM TX

DIMMER

GROUP CHANNEL

123

456

789

CE

RX TX

0

CH/F/REQ

iM 710

FUNC

–

q

w

er

t

y

u

i

!0

o

This function is not installed
in the IC-M710.

PANEL DESCRIPTION

2

q MICROPHONE CONNECTOR (p. 17)
Accepts the supplied microphone or an optional

handset.

NOTE: No audio is output to the speaker when

the microphone or handset is not connected.

w POWER SWITCH [POWER]

Turns power ON or OFF.

e SPEAKER SWITCH [SPEAKER]

Turns the speaker ON or OFF.

• “è” appears in the display while the speaker is turned

OFF.

• Any external speaker connected to the rear panel is
not turned OFF.

r DISPLAY INTENSITY SWITCH [DIMMER]

➥ Turns the display backlighting ON or OFF.
➥

Push [FUNC], and then rotate the channel selector
dial to set the intensity level while pushing and hold
ing

t VOLUME CONTROL [VOLUME]

Adjusts the audio output level.

• No sound is output to the speaker when:

- A microphone is not connected.

- The [SPEAKER] switch is turned ON.

- The [SQL] switch is turned ON and no signal is being

received.

y GROUP CHANNEL SELECTOR [GROUP]

Selects groups in 20 channels steps and ITU ma-

rine channel groups.

[DIMMER].

u ANTENNA TUNE SWITCH [TUNE] (p. 9)
Tunes the external tuner to the antenna.

• Activates only when an optional antenna tuner such as
Icom’s AT-130 is connected.

NOTE: When selecting “Automatic tuning” in the

set mode, pushing this switch is not necessary
to tune the antenna. (p. 13)

i CHANNEL SELECTOR [CHANNEL] (p. 6)
➥ Selects an operating channel within the selected

channel group.

• User channels can be selected from 1 to 160 (max.)

in sequence regardless of the channel group.

➥ Changes the operating frequency after [CE] is

pushed (while “►”appears).

• The changed frequency is not programmed in this

way.

o FUNCTION SWITCH [FUNC]

-

After pushing activates the secondary functions of

these switches:

- [SQL] ········ Starts and stops scan (p. 7).

- [RX]··········· Sets RF gain (p. 10).

- [TX] ··········· Selects transmit power (p. 9).

- [CE]···········

NOTE:

!0 CLARITY CONTROL [CLARITY] (p. 10)
Shifts the receive frequency ±150 Hz for clear re-

ception of an off frequency signal.

Reprograms the channel name (p. 12).

Function availability depends on vesions.

NOTE: Some versions have no ITU channels.

2

2

CE

RX

TX

−

CH/FREQ

1

0

to

PANEL DESCRIPTION

■ Front panel (Continued)

in the IC-M710.

!2!3!4!5!6!7This function is not installed

MICROPHONE

!1 KEYPAD

• Enters the selected channel number (or fre­quency) for direct channel selection. (p. 7)

• Stores a receive frequency into a user chan­nel or ITU simplex channel when:

- pushing [CE] (“►” appears)

- entering the desired frequency via the key-

pad

- pushing and holding [RX] (p. 12)

• Adjusts the RF gain after pushing [FUNC] to
reduce the receiver sensivity. (p. 10)

• Stores a transmit frequency into a user chan­nel (except General version) when:

- pushing [TX] (“$” blinks)

- pushing [CE] (“►” appears)

- entering the desired frequency via the key-

pad

- pushing and holding [TX] (p. 12)

• Selects the transmit output power after push­ing [FUNC]. (p. 9)

POWER

iM 710

SPEAKER

DIMMER

TX FREQ

2182KHz

RESET

[ALARM] [TX FREQ]+

FOR ALARM TX

VOLUME

SSB RADIO TELEPHONE

MODE

GROUP CHANNEL

AGC SQL

NB

TUNE

• Toggles the channel number input or fre­quency input. (p. 8)

- “►” appears when frequency input is se-

lected.

- The channel selector and keypad changes

the frequency while “►” appears.

• Clears the entered digit and retrieves the pre­vious channel (or frequency) while entering
numbers. (p. 7)

• Enters the name programming condition after
pushing [FUNC] for changing the channel
name. (p. 12)

• Toggles the channel or frequency indications.
(p. 6)

• Enters “–” for ITU simplex channels. (p. 7)

• Enter channel number with up to 4 or 5 digits
when “►” does not appear. (p. 7)

• Enter the frequency with up to 6 digits when
“►” appears. (p. 8)

FUNC

123

456

789

CE

0

RX TX

CLARITY

–

!1

CH/F/REQ

3

PANEL DESCRIPTION

2

!2 SQUELCH SWITCH [SQL] (p. 10)
➥ Activates the voice squelch function to reject

undesired background noise while no signal is
being received.

• The squelch opens only when the received
signal contains voice or FSK components.

➥ Starts and stops the scan function after pushing

[FUNC]. (p. 7)

!3 NOISE BLANKER SWITCH [NB] (p. 10)
Turns the noise blanker function ON to remove

pulse-type noise such as engine ignition noise.

• “NB” appears when the function is turned ON.

!4 AGC OFF SWITCH [AGC] (p. 10)
Deactivates the AGC function to receive weak sig-

nals blocked by strong adjacent signals.

• “ê” appears when the [AGC] switch is turned

ON (stands for AGC deactivated).

!5 MODE SWITCH [MODE]

Temporarily selects an operating mode. Available

modes differ with the transceiver version.

• J3E (USB), H3E, J2B (AFSK), FSK, R3E, and
A1A (CW) modes are available.

• The temporary mode is cleared and the previous
mode appears when changing a channel.

!6 TRANSMIT FREQUENCY SWITCH [TX FREQ]

(p. 9)

Displays the transmit frequency and opens the

squelch to check and monitor the transmit fre­quency.

!7 2182 kHz SELECTION SWITCH

[2182KHz •

➥ Selects channel 0 (2182 kHz; distress call fre-

quency).

• The channel selector does not function when

selecting channel 0.

➥ Ignores external control and gives the front

panel control priority when an external control­ler (NMEA format) is connected.

reset

] (p. 6)

4

2

TUNE

DUP SIMP

TX

RX

SCAN

SQL NB

AGC

AGC

ALM

O

►

►

4

q

w

e

rt yu

o

!0

!1!2!3!4

i

!5

0

321

A

PANEL DESCRIPTION

■ Display

q RECEIVE INDICATOR

Appears while receiving and when the squelch is

open.

w TUNE INDICATOR (p. 9)
Flashes while the connected antenna tuner, such

as Icom’s AT-130, is being tuned.

• Tuning starts when transmitting on a new frequency or
pushing the [TUNE] switch.

e TRANSMIT INDICATOR

➥ Appears when transmitting.
➥ Blinks when the [TX] key is pushed for transmit fre-

quency programming. (p. 12)

r S/RF METER

➥ Shows the relative received signal strength

while receiving.

➥ Shows output power while transmitting.

t CHANNEL NAME READOUT

➥ Shows the pre-programmed channel name (al-

phanumeric) during channel indication. (p. 6)

➥ Shows the transmit frequency during frequency

indication. (p. 6)

y SQUELCH INDICATOR (p. 10)
Appears when the squelch is ON.

i FUNCTION INDICATOR

Appears when the [FUNC] switch is pushed.

• Some switches activate secondary functions.

o NOISE BLANKER INDICATOR (p. 10)
Appears when the [NB] switch is turned ON.

!0 AGC OFF INDICATOR (p. 10)
Appears when the [AGC] switch is pushed to indi-

cate the AGC function is deactivated.

!1 MODE READOUT

Shows the selected operating mode (type of emis-

sion).

!2 SPEAKER OFF INDICATOR

Appears when the [SPEAKER] switch is pushed to

indicate the front panel speaker is deactivated.

!3 CHANNEL READOUT

➥ Shows the selected channel number during

channel indication. (p. 6)

➥ Shows the receive frequency during frequency

indication. (p. 6)

!4 SIMPLEX/DUPLEX INDICATORS

These appear to show whether the selected chan-

nel is simplex or duplex.

u SCAN INDICATOR (p. 7)
Appears when the scan function is in use.

• Pushing [SCAN] starts and stops the scan.

!5 FREQUENCY INDICATORS (p. 8)
Appears when the frequency entry condition is se-

lected for frequency selection.

• The [CE] key toggles the indicator ON or OFF.

5

ITU FSK channels can be hidden using set mode. (p. 13)

SELECTING A CHANNEL/FREQUENCY

■ Selecting a channel

3

The transceiver has 160 user channels and ITU
channels. However, the number of user channels
can be optionally restricted and ITU channels are
not available with some versions.

CHANNEL INDICATION

CH/F/REQ

FREQUENCY INDICATION

RX

RX

DUP

DUP

CHANNEL SELECTION MODE

Channel can be selected

NOTE: Channel name (alphanumeric) does not appear during
channel indication according to set mode settings (p. 14).

D Using the channel selector

[EXAMPLE]: Selection of the [GROUP] selector

The transceiver has two large controls for group se­lection and channel selection. The [GROUP] selec­tor changes channels in 20 channel increments and
selects ITU channel groups*; and the [CHANNEL]
selector selects each channel.

q Be sure no “►” indicator appears on the display.

RX

►

If appears, push [CE] and then it will disappear.

DUP

w Rotate the [GROUP] selector to select the de-

sired channel group as shown at right and/or
below.

e Rotate the [CHANNEL] selector to select the de-

sired channel.

NOTE:
lected with the
lection is

When Channel 0 and/or

[2182KHz]

NOT

possible. In such a case, push

switch, channel se-

2182 kHz

is se-

[2182KHz] in advance.

RX

CE

RX

FREQUENCY SELECTION MODE

Frequency can be selected

1

WWV

21

KMI

41

WOM

61

WOO

121

FAX

141

SHP/SHP

*AII ITU channels are not available with some versions and

J3E

J3E

J3E

J3E

•

•

•

•
J3E

J3E

DUP

►

►

DUP

401

4.357.0

4 – 1

4A LTD

601

6.501.0

2501

26.145.0

25 – 1

4001

4.210.5

J3E

J3E

J3E

•

•

•

•
J3E

J3E

J3E

ITU SSB channels*

ITU FSK

channels*

CHANNEL GROUP

CHANNEL NO. DESCRIPTION CHANNEL NO. DESCRIPTION CHANNEL NO. DESCRIPTION

User channels

1 to 160

401 to 427

4 -1 to 4 - 9

601 to 608

6 - 1 to 6 - 9

801 to 832

([GROUP] selec-

tor changes in 20

channels steps)

4 MHz ITU duplex

channels

4 MHz ITU simplex

channels

6 MHz ITU duplex

channels

6 MHz ITU simplex

channels

8 MHz ITU duplex

channels

8 - 1 to 8 - 9

1201 to 1241

12 - 1 to 12 - 9

1601 to 1656

16 - 1 to 16 - 9

1801 to 1815

18 - 1 to 19 - 1

8 MHz ITU simplex

channel

12 MHz ITU duplex

channel

12 MHz ITU simplex

channels

16 MHz ITU duplex

channels

16 MHz ITU simplex

channel

18 MHz ITU duplex

channel

18 MHz ITU simplex

channels

2201 to 2253 22 MHz ITU duplex channels

22 - 1 to 22 - 9 22 MHz ITU simplex channels

2501 to 2253 25 MHz ITU duplex channels

25 - 1 to 25 - 9 25 MHz ITU simplex channel

4001 to 25040

ITU FSK duplex channels (SITOR use)

(No group separation)

6

3

Channel scan

ch 1

ch 2 ch 3

ch 4

ch 5ch 50

scan is
cancelled
when
transmitting

Channel resume scan

ch 1

ch 2 ch 3

ch 4

ch 5ch 50

Scans pauses for
30 seconds, then
resumes after
transmitting.

Programmed scan

SELECTING A CHANNEL/FREQUENCY

D Using the keypad

Direct channel selection via the keypad is available
for quick channel selection.

q Be sure no “►” indicator appears on the display.

• If appears, push [CE] and then it will disappear.
w Enter the desired channel number via the keypad.

• A user channel is selected when channel 1­160 is input (max. number may be optionally re­stricted).

• An ITU SSB channel is selected when channel
numbers higher than 401 are input (not available
for some versions).

• An ITU FSK channel is selected when channel
numbers higher than 4001 are input (not usable
according to set mode setting).

• The “–” key can be used 10 selecting an ITU
simplex channel.

e Push [RX] to select the entered channel.

D Using scan function

The transceiver has automatic channel or frequency
change capability (scan function). There are 3 types
of scan functions available to suit your needs.

[EXAMPLE]: Selecting channel 153.

RX

1

RX

5

RX

3

RX

RX

RX

DUP

DUP

DUP

DUP

DUP

SCAN OPERATION

q

Select your desired channel group with the [GROUP]

and [CHANNEL] selector.

• Or use the keypad and [CE] key for direct selection.

• This operation is not necessary for programme scan.

w Push [SQL] to turn OFF the squelch function if the pro-

grammed scan is selected.

e Push [FUNC] then [SQL] to start the scan.
r To stop the scan, repeat step e again.

• [CHANNEL] rotation and some other switches also

stop the scan.

ch 159

7

Scan selection is available in the set mode. See p. 14 for
scan selection.

Channel scan and channel resume scan increases chan­nels within a 5 channel range such as ch 1 to ch 5, ch 156
to ch 160, etc. in user channels; or all channels in the group
of ITU channels.

Programmed scan changes frequencies within the fre­quency range between user channels 159 and 160.

ch 160

Scans the frequency range
between the programmed
frequencies on channels
159 and 160.
Scans fast when squelch
is closed and slowly when
opened.

■ Selecting a frequency

frequency can be changed.

Select non frequency
programmed channel.

SELECTING A CHANNEL/FREQUENCY

3

The transceiver has 0.5 to 30.0 MHz general cover­age receive capability, with 100 Hz resolution. The
receive frequency can be changed instantly, inde­pendent of the transmit frequency.

D Using the channel selector

q Select a channel which is programmed near the

frequency you want receive.

w Push the [CE] key to select frequency selection

mode.

•

“►” appears on the display.

e Rotate the [CHANNEL] selector to change the fre-

quency.

r To return to the previous frequency push [CE].

• “►” disappears and the previous frequency or channel

name appears.

NOTE: The selected frequency is used for tempo­rary receiving (transmitting is not available). This
frequency is cleared once the channel is changed.
If you want to program a frequency refer to p. 12,
memory programming.

RX

CE

No “►” indicator shows that the channel
will be changed when rotating [CHANNEL].

RX

►

“►” and the frequency show that the

DUP

DUP

D Using the keypad

CAUTION: A frequency can be entered into a user

channel or ITU simplex channelby pushing the
[RX] key. However, when pushing and holding the
[RX] key after entering a frequency. The previousty
programmed contents are erased and cannot be
retrieved. Therefore, keypad entry should be used
only on spare channels.

q Select the memory channel to be used for general

coverage use.

w Push [CE] to select frequency selection mode.

• “►” appears on the display.

e Enter the desired frequency with 5 or 6 digits.
r Push [RX] to input the frequency.

• Do not hold [RX] for more than 0.5 seconds,
otherwise the frequency will be programmed into
the channel.

[EXAMPLE]: Setting 12.3450 MHz

CE

►

1

►

23

45

►

0

RX

(momentarily)

RX

►

RX

►

After temporarily receiving.

CE

8

4

microphone
connector

[SQL]

[SPEAKER] [CLARITY]

TX FREQ

■

Basic voice receive and transmit

RECEIVE AND TRANSMIT

q Check the following in advance:
➥ The microphone is connected.
➥ The [SPEAKER] switch is turned OFF.
➥ The [SQL] switch is turned OFF.
➥ The [CLARITY] control is set to the center posi-

tion.

➥ The memory mode is selected.

• If necessary, push [CH/FREQ] to select the memory
mode.

■ Functions for transmit

w Select the desired channel to be received with the

[GROUP] and [CHANNEL] selectors.

• When receiving a signal, the S-meter shows the signal
strength.

e Adjust [VOLUME] to the desired audio level when

receiving a signal.

r If the received signal is in a different mode, push

[MODE] to select the desired operating mode.

t If connected, push [TUNE] to tune the antenna

tuner.

• This operation is not necessary when “automatic tun­ing” is selected in the set mode (p. 13).

y To transmit on the channel, push and hold the PTT

switch on the microphone.

• “TUNE” flashes for 1 to 2 seconds for the first trans­mission on a channel when an antenna tuner is con­nected.

u After the flashing stops, speak into the microphone

at your normal voice level.

• The RF meter shows the output power, according to
your voice level.

i Release the PTT switch to return to receive.

9

D Transmit frequency check

When “DUP” appears on the display, such as for a
ship-to-shore channel, the transmit frequency differs
from the receive frequency.

In such cases, the transmit frequency should be mon­itored before transmitting to prevent interference to
other stations.

D Transmit power selection

The transceiver has 3 selectable output powers.
High power allows longer distance communications
and low power reduces power consumption.

NOTE: Low power setting affects all channels ex­cept the 2182 kHz emergency channel.

Push and hold [TX FREQ] to monitor the transmit fre­quency.

• The display shows the transmit frequency.

q Push [FUNC] then [TX] to call up the following dis-

play.

w Rotate the [CHANNEL] selector to select high or

low output power.
3 : high power (150 W PEP)
2 : middle power (60 W PEP)
1 : low power (20 W PEP)

e Push [FUNC] or [CE] to return to the previous dis-

play.

■ Functions for receive

[CLARITY]

“SQL” appears when the squelch function is ON (noise is muted).

RX

DUP

►

D Squelch function

The squelch function detects signals with voice com­ponents and squelches (mutes) unwanted signals,
such as unmodulated beat signals. This provides
quiet standby.

When you need to receive weak signals, the squelch
should be turned OFF.

D Noise blanker

The noise blanker function reduces pulse type noise,
such as that coming from engine ignitions.

The noise blanker may distort reception of strong
signals. In such cases, the noise blanker should be
turned OFF.

RECEIVE AND TRANSMIT

• Push [SQL] to toggle the function ON or OFF.

DUP

• Push [NB] to toggle the function ON or OFF.

RX

DUP

“NB” appears when the noise blanker is ON.

SQL

NB

4

D AGC OFF function

The receiver gain is automatically adjusted accord­ing to the received signal strength with the AGC (Au­tomatic Gain Control) function, to prevent distortion
from strong signals and to obtain a constant output
level.

When receiving weak signals with adjacent strong
signals or noise, the AGC function may reduce the
sensitivity. In this situation, the AGC function should
be deactivated.

D RF gain setting

The receiver gain can be reduced with the RF gain
setting. This may help to remove undesired weak sig­nals while monitoring strong signals.

Usually the AGC function reduces the RF gain ac­cording to the receive signal strength and these weak
signals are removed. However, during periods of no
signals, these weak signals may not be heard.
In such cases, the RF gain may be useful for setting
a minimum level at which to hear signals.

• Push [AGC] to toggle the function ON or OFF.

RX

Appears when the [AGC] switch is ON
(AGC function deactivates).

AGCAGC

q Push [FUNC] then [RX] to call up the following dis-

play.

w Rotate the [CHANNEL] selector to set the desired

minimum cutting level.

• “0” to “9” are available.

• S-meter shows the minimum permited level.
e Push [FUNC] or [CE] to exit the RF gain display.

D Clarity control

Voice signals received from other stations may be
difficult to receive. This may sometimes happen if a
station is transmitting slightly off frequency. In such
cases, vary the receive frequency only, using the
[CLARITY] control.

• Adjust [CLARITY] to improve the audio signal.

10

4

2

8

4

5

1

3

6

7

ACC(1) socket

pin 1

pin 2

CW key

2

8

4

5

1

3

6

7

ACC(1) socket

FSK terminal unit

FSK keying

AF input

Tx/Rx control

Ground

pin 3

pin 4

pins 2, 5

RECEIVE AND TRANSMIT

■ CW operation (Depends on versions)

The transceiver has the following CW keying features

CW key connection

selectable in the set mode, as described on page

15.

➥ Full break-in (receiving is possible while transmitting)
➥ Semi break-in (automatic transmission with keying)
➥ OFF (manual transmission is necessary before keying)

q Connect a CW keyer or an external electronic

keyer to the ACC(1) socket, as shown at right.

w Select the desired channel to operate in the A1A

(CW) mode.

e When the selected channel is not in the A1A (CW)

mode, push [MODE] one or more times to select
“A1A.”

r Operate the CW keyer to transmit a A1A (CW) sig-

nal.

NOTE:

• A1A mode is not available in some versions.

• CW narrow can be selected in the set mode when

an optional filter is installed. (p. 14)

■ FSK operation (Depends on versions)

The transceiver has FSK and J2B modes for FSK op­eration—use FSK when using the built-in oscillator;
use J2B when using an AFSK terminal unit.

q Connect an FSK terminal unit as shown at right.
w Select the desired channel.

• FSK ITU channel group, ch 4001 to ch 25040, are
available, depending on the version.

e Push [MODE] one or more times to select either

“FSK” or “J2B.”

r Operate the FSK terminal unit.

NOTE:

• FSK shift frequency and FSK polarity can be ad-

justed in the set mode (pgs. 14 and 15).

• Some transceivers may operate 1.7 kHz higher

than the IC-M710’s J2B mode, even when the
same displayed frequencies are in use.

FSK terminal unit connection

11

USER CHANNEL PROGRAMMING

RX

DUP

Push and hold [RX]

►

■

Programming a frequency

5

The IC-M710 has up to 160 user-programmable
channels each with channel name capability of up to
7 alphanumeric characters.

D Receive Frequency

q Select the desired user channel to be pro-

grammed.

•

Channel 1 to 160 (maximum) are programmable.

w Push the [CE] key to select frequency selection

mode.

• “►” and a frequency appear on the display.

e Enter the desired frequency via the keypad with 5

or 6 digits.

• Or rotate the [CHANNEL] selector to change the fre­quency.

r To change the operating mode (type of emission),

push [MODE] one or more times.

t Push and hold [RX] for 1 second to program the

user channel.

D Transmit frequency

q

Select the desired user channel to be programmed.

w Push [TX].

• “$” blinks.

e Push [CE] to select frequency selection mode.

• “►” and frequency appear on the display.

r Enter the desired frequency via the keypad with 5

or 6 digits.

• The [CHANNEL] selector cannot be used.

• Refer to p. 24 for programmable frequency range (fre­quency coverage transmit).

t Push and hold [TX] for 1 second to program.
y Push [TX] to clear the

“$” blinking.

NOTE: ITU simplex channels can be programmed
as well as user channels. However, transmit fre­quencies cannnot be programmed (not necessary
to program).

Push [CE]

Set the frequency

Push [TX]

Push [CE]

Push and hold [RX]
after entering a
frequency.

RX

“►” and frequency appear.

RX

Use keypad or channel selector.

RX

Programming is completed.

RX

TX

TX

“T  ” blinks.

RX

TX

RX

TX

DUP

►

DUP

►

DUP

DUP

DUP

►

DUP

D Channel name

q Select the desired user channel to be pro-

grammed.

w Push [CH/FREQ] to select channel indication.
e Push [FUNC] and then [CE].

• The channel name (alphanumeric) readout blinks.

r Rotate the [GROUP] selector to cursor position

and the [CHANNEL] selector for the message con­tents.

• To return to the previous message, push [CE].

t Push and hold [RX] to program the message.

• Blinking stops.

• Available characters

RX

Push [FUNC]
then [CE]

Rotate [GROUP]
and [CHANNEL]
to select cursor
and character

Push [RX]

to

to

(space)

RX

RX

DUP

DUP

DUP

12

6

[POWER]

Status

Item

[1]

[FUNC]

AT-130
(default)

AT-120

AH-3

Tuning starts when
pushing [PTT] on a new
frequency.

Tuning starts only when
[TUNER] is pushed.
(default)

FSK channels do not appear

SET MODE

■ Set mode operation

Set mode operation is used for programming infre­quently changed values or functions.
The IC-M710 has up to 13 items.

NOTE: Some of the set mode items described in

this section are not available on some transceiver
versions.

q Push [POWER] to turn power OFF.
w While pushing and holding [FUNC] and [1], turn

power ON and enter the set mode.

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

e Rotate the [GROUP] selector to select the de-

sired item.

r Rotate the [CHANNEL] selector to set the values

or options for the selected item.

t Turn power OFF and then ON again to exit the

set mode.

■ Set mode contents

(1) FSK ITU channels

FSK ITU channels appear as a group between the
ITU 25 MHz band and user channels. This FSK chan­nel group can be hidden for voice communication use
only.

(2) Connected antenna tuner

The transceiver has several tuner control systems
for use with an optional Icom antenna tuner. Select
the condition depending on the connected antenna
tuner.

Note that internal switch selection may be required
when using a non-Icom tuner (p. 20).

(no SITOR operation).
(default)

FSK channels appear
(SITOR operation).

13

(3) Automatic tuning operation

When the optional AT-130
connected, tuning can be started automatically with­out the [TUNE] switch for instant operation.

If manual tuning is required, this automatic operation
can be deactivated.

AUTOMATIC ANTENNA TUNER is

Frequency shift:
170 Hz
(default)

Frequency shift:
425 Hz

Frequency shift:
850 Hz

Fastest scan speed

Slowest scan speed

(default: 4)

(4) Scan type selection

Passband:

2.3 kHz/−6 dB
(default)

Passband:
500 Hz/−6 dB

Channel scan

Scan is canceled when
transmitting. (default)

Channel resume scan

Scan pauses when squelch
opens, then resumes after
30 seconds.

Programmed scan

Scan operates over the
frequency range.

This item selects one of the following scan functions.

Channel scan and channel resume scan search 5
channels around a user selected channel or search
all ITU channels in the band when an ITU channel is
selected.

Programmed scan searches signals within the fre­quency range and activates slowly while squelch is
open and fast while squelch is closed.

(5) Scan speed

Selects scan speed as follows:

(unit: msec./ch)

Selection

Channel Scan

Channel resume
scan (sec./ch)
Programmed scan
(squelch open*)

Faster Slower

*squelch closed: 10 ms/ch

1 2 3 4 5 6 7 8 9 10

130 260 520 1040 2080 4160 8320 16360 33280 66560

1 2 3 4 5 6 7 8 9 10

10 20 40 60 90 140 210 320 480 720

SET MODE

6

(6) Channel name and frequency

The lower half of the display can be set to display a
programmable channel name or a receive frequency
according to an operator’s needs.

(7) CW/FSK narrow filter

This selects the passband width for A1A (CW), FSK
or J2B mode.

NOTE: When “on” is selected without the optional

filter installed, general version does not function
on these modes.

(8) FSK frequency shift

Several shift settings (the difference between the
mark and space frequency) are used for FSK opera­tion. This item allows you to select a shift setting for
almost any FSK system.

Channel number
and channel name
(alphanumeric)
(default)

Channel number
and frequency

14

6

Lowest contrast

Highest contrast

(default: 7)

NMEA ID: 1
(default)

NMEA ID: 99

[DSC] (or REMOTE
according to the version)
socket (default)

The [CLONE] jack

FSK normal
(default)

FSK reverse

Full break-in

Automatic keying without
delay time (default)

Semi break-in

Automatic keying with delay
time

OFF

Manual transmission
necessary for keying

SET MODE

(9) FSK polarity

Normal and reverse polarities are available for FSK
operation. This item allows you to select one of these
polarities.

“FSK-REV oFF” (normal):
key open (mark); key close (space)

“FSK-REV on” (reverse):
key open (space); key close (mark)

(10) CW break-in

CW break-in function (in A1A (CW) mode) toggles
transmit and receive with CW keying. Full break-in al­lows you to receive signals between transmitted key­ing pulses during CW transmission. Semi break-in
allows you to mute receiving until keying stops with
some delay time.

(11) LCD contrast

The LCD contrast can be adjusted through 10 levels,
to suit transceiver mounting angle, location and am­bient lighting.

(12) ID number setting for remote control

When connecting an external controller, such as a
personal computer, 2-digit ID codes are required
to access the transceiver. The IC-M710 adopts the
NMEA0183 format, and uses a “proprietary sentence”
for remote control.

15

(13) Remote control input terminal

Remote control signals can be input via the [DSC] (or
REMOTE) socket or [CLONE] jack.

CONNECTIONS AND INSTALLATION

Optional AT-130

External

speaker

q

w

r

t

y

u

i

e

12 V battery

R CAUTION:
NEVER remove the

line fuse from the DC
power cable.

■ Connections on the rear panel

7

q ANTENNA CONNECTOR (p. 20)
Connects a 50 ø HF band antenna with a 50 ø

matched coaxial cable and a PL-259 plug.

w GROUND TERMINAL

IMPORTANT! Connects to a ship’s (or vehicle’s)

ground. See p. 19 for details.

e ACC(1) and ACC(2) SOCKETS

See p. 17 for details.

r CLONE JACK

For Dealer use only.

t REMOTE SOCKET (p. 18)
REMOTE socket for General version.

y EXTERNAL SPEAKER JACK

Connects a 4 to 8 ø external speaker using a

monaural plug. This external audio is not muted by
the [SPEAKER] switch on the front panel.

1

⁄4”

■ Unpacking

Microphone (HM-180) ············································· 1
Microphone hanger ················································· 1
DC power cable (OPC-1107A) ······························· 1
Mounting bracket ···················································· 1
Bracket knobs ························································· 4
Flat washers (M5) ··················································· 4

CONNECTORS

DIN connector (8-pin for ACC1) ······························ 1
DIN connector (7-pin for ACC2) ······························ 1
Speaker plug ·························································· 1
Tuner connector ······················································ 1
Pins for tuner connector ········································· 4
Plates for tuner connector ······································ 4

u TUNER RECEPTACLE

Connects a control cable to an optional AT-130 an-

tenna tuner. A female connector is supplied for

connection.

i DC POWER RECEPTACLE

Connects to a regulated 12–16 V DC power source

such as a 12 V battery or DC power supply using
the supplied DC power cable.

CAUTION: DO NOT connect to a 24 V bat-

tery. This will damage the transceiver.

NUTS AND BOLTS

Allen bolt (M6 × 50) ················································ 4
Self-tapping screws (M6 × 30) ································ 4
Nuts (M6; use 2 pcs. for each bolt) ························ 8
Flat washers (M6) ··················································· 8
Spring washers (M6) ·············································· 4
Self- tapping screws

(M3 × 16 for mic. hanger) ································ 2

FUSES

DC power cable (30 A) ··········································· 1
1205 (internal) ························································ 2

16

7

CONNECTIONS AND INSTALLATION

■ Connector information

ACC(1)

2

45

13

8

67

Rear panel
view

ACC(2)

2

45

13

67

Rear panel
view

PIN NAME DESCRIPTION

PIN

SPECIFICATIONS

1 CWK CW and FSK keying input. Input level: Less than 0.6 V for transmit.
2 GND Connects to ground. Connected in parallel with ACC(2) pin 2.

Input/output pin.

3 SEND

Goes to ground when transmitting.
When grounded, transmits.

4 MOD

5 AF

Modulator input.
Usable when pin 3 is grounded.

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

6 SCAN Starts scan when grounded.

7 13.6 V 13.6 V output when power is ON.

Ground level: –0.5 to 0.8 V
Input current: Less than 20 mA
Connected in parallel with ACC(2) pin 3.

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

Output impedance: 4.7 kø
Output level: 100–300 mV rms

Scan operation: Less than 0.6 V

Output current: Max. 1 A
Connected in parallel with ACC(2) pin 7.

Control voltage: –3 to 0 V

8 ALC ALC voltage input.

Input impedance: More than 10 kø
Connected in parallel with ACC(2) pin 5.

PIN NAME DESCRIPTION

PIN

1 8 V Regulated 8 V output.

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

SPECIFICATIONS

2 GND Same as ACC(1) pin 2.
3 SEND Same as ACC(1) pin 3.
4 NC No connection.
5 ALC Same as ACC(1) pin 8.
6 RLC T/R relay control output. When transmitting: 0 V (less than 0.5 A)
7 13.6 V Same as ACC(1) pin 7.

MICROPHONE PIN NAME DESCRIPTION

PIN

1 MIC+

Audio input from the microphone
element.

2 NC No connection.

1

2

3

7

8

6

54

3 AF1

4 AF2

AF output controlled with [VOLUME].
Connected to pin 4 in the microphone.

AF input.

Connected to pin 3 in the microphone.
5 PTT PTT switch input. When grounded, transmits.
6 GND Connected to ground.
7 MIC– Coaxial ground for MIC+.
8 AF– Coaxial ground for AF1 and AF2.

TUNER PIN NAME DESCRIPTION

12

PIN

1 KEY Key signal input.
2 START Start signal output.
3 13.6V 13.6 V output

34

4

E

_ terminal

SPECIFICATIONS

Input impedance: 600 ø

Output impedance: 4 ø

SPECIFICATIONS

–0.5 to 0.8 V during tuning
Pulled up 8 V, 0 V (100 msec.) as start signal.
Max. current :2 A

Ground

17

REMOTE

69

51

CONNECTIONS AND INSTALLATION

PIN NAME DESCRIPTION

PIN

1 MOD+

2 MOD– Coaxial ground for MOD+.

3 AF+

4 AF– Coaxial ground for AF+.
5 NMI+ NMEA data input. NMEA standard format/level
6 NMI– Coaxial ground for NMI+.
7 NMO+ NMEA data output. NMEA standard format/level
8 NMO– Coaxial ground for NMO+.
9 GND Ground for digital equipment.

Modulation input from an external
terminal unit.

AF detector output for an external
terminal unit.

Input impedance: 600 ø
Input level: Approx. 100 mV rms

Output impedance: 600 ø
Output level: 0.25–2.5 V rms

SPECIFICATIONS

6

DC 13.6V PIN NAME DESCRIPTION

1 2
4 635

PIN

1–3 + + DC input

4–6

– _ DC input

SPECIFICATIONS

Max. power consumption: 30 A

18

7

Crimp

Solder

or

Supplied
DC power cable

red

black

12 V
battery

Optional AT-130

Transceiver

Copper pipe Metal object Copper screen

CONNECTIONS AND INSTALLATION

■ Ground connection

The transceiver and antenna tuner MUST have an
adequate ground connection. Otherwise, the overall
efficiency of the transceiver and antenna tuner instal­lation will be reduced. Electrolysis, electrical shocks
and interference from other equipment could also
occur.

For best results, use the heaviest gauge wire or strap
available and make the connection as short as possi­ble. Ground the transceiver and antenna tuner to one
ground point, otherwise voltage differences between
2 ground points may cause electrolysis.

CAUTION:

The IC-M710 has a negative ground.
NEVER connect the IC-M710 to a “positive ground
ship,” otherwise the transceiver will not function.

Ground system example

Good ground points

• Ship’s ground terminal

• External ground plate

• External copper screen

Acceptable ground points

• Stainless steel tuna tower

• Stainless steel stanchion

• Through mast

• Through hull

• Metal water tank

Undesirable ground points

(these points may cause electrolysis)

• Engine block

• Keel bolt

Unusable ground points

( these connections may cause an explosion or elec-

trical shock)

• Gas or electrical pipe

• Fuel tank

• Oil-catch pan

19

■ Power source

The transceiver requires regulated DC power of

13.6 V and at least 30 A. There are 3 ways to sup­ply power:

• A direct connection to a 12 V battery in your ship,
through the supplied DC power cable.

CAUTION: The supplied DC power cable MUST
be used to provide power to the transceiver.
AVOID exceeding the 3 m (10 ft) length of the DC
power cable. If it is necessary to make a run of
over 3 m (10 ft), use a #6 or similar gauge wire in­stead of the supplied DC power cable, for a maxi­mum run of 6 m (20 ft).

DC power cable connection

NOTE: Use terminals for

the cable connection.

■ Antenna

Coaxial cable

To antenna element

Control cable (sold separately)
An optional OPC-566 is available

IC-M710

[13.6]

[E] (AT-130 only*)

[START]

[KEY]

[E]

[KEY]
[13.6]

[START]

AT-130

[GND]

*For the AT-130, the [GND] terminal can be used inside of the [E] terminal.

S9
(Start port level)

S11
(Key port input)

CONNECTIONS AND INSTALLATION

7

Most stations operate with a whip or long wire (insu­lated backstay) antenna. However, these antennas
cannot be connected directly to the transceiver, since
their impedance may not be matched with the trans­ceiver antenna connector.

D MN-100/MN-100L ANTENNA MATCHERS

Antenna wire

MN-100/MN-100L

D AT-130 AUTOMATIC ANTENNA TUNER

Even with a 50 ø matched antenna, all marine bands
may not be fully usable. The following antenna
matcher, or antenna tuner may be helpful for proper
antenna installation.

D Non-Icom tuner

Some non-Icom tuners may be used with the IC­M710. Please consult your dealer or marina if you
wish to use one. The following internal settings may
be required for connection.

Supplies 8 V when pushing
[TUNE].

Accepts “LOW” as an an­swer back signal.

Grounded when pushing [TUNE].
(used for AT-130—default)

Accepts “HIGH” as an answer back signal.
(used for AT-130—default)

20

7

Spring washer

Flat
washers

Nuts
(Use two nuts to
prevent loosening.)

115

(4

1

/

2

)

67

(2

5

/

8

)

93.5

(3

11

/

16

)

100 (3

15

/

16

)

152

(6)

58

(2

9

/

32

)

290

(11

7

/

16

) 280 (11)

312.5 (12

5

/

16

)

350 (13

25

/

32

)

319 (12

9

/

16

)

143

(5

5

/

8

)

170 (6

11

/

16

)

Unit:mm(inches)

CONNECTIONS AND INSTALLATION

■ Mounting

R

WARNING: NEVER mount the transceiver

overhead. The weight of the transceiver is approx­imately 7.8 kg

(17.4 lb)

, but its apparent weight will
increase several fold due to wave shocks or vibra­tion. The transceiver must be mounted on a flat,
hard surface.

D Mounting example

D Mounting location

Select a location that provides easy access to the
front panel for navigation safety, has good ventilation
and is not subject to sea spray. The face of the trans­ceiver should be at 90 degrees to your line of sight
when operating it.

CAUTION: KEEP the transceiver and microphone
at least 1 meter away from your vessel’s magnetic
navigation compass.

Check the installation angle; the display may not
be easy to read at some angles.

21

D Transceiver dimensions

■ Disassembling the transceiver

Rear frame

Rear sealing

Front sealing

D Opening the case

Follow the case and cover opening procedures
shown here when you want to adjust a setting for
non-Icom tuner control.

q Remove the 9 screws from the rear panel, then re-

move the rear frame and rear sealing.

w Remove the transceiver case.
e When reassembling the transceiver, check the fol-

lowing points:

➥ Internal fan and slits in the case are on the

same side.
➥ Front sealing is mated correctly.
➥

Rear sealing is attached in the proper orientation.
➥ Screws are tightened securely.

CONNECTIONS AND INSTALLATION

7

■ Fuse replacement

The fuses are installed in the DC power cable and
the circuitry in the body, to protect the transceiver.

D DC power cable fuse

FGB 30 A

D Circuitry fuse

5 A

22

8

TROUBLESHOOTING

What appears to be equipment malfunction may not
be damaging or difficult to solve. Check the following
chart before making any adjustments or sending the
transceiver to an Icom Service Center.

PROBLEM POSSIBLE CAUSE SOLUTION REF.

Power does not come
ON when [POWER] is
pushed.

• Power cable is improperly connected.

• The DC power cable fuse or circuitry fuse
is blown.

POWER

• Reconnect the cable securely.

• Find and repair the cause of the problem
and then replace the damaged fuse with
a new one.

p. 16
p. 22

No sound comes from the
speaker.

Sensitivity is too low and
only strong signals are au­dible.

RECEIVETRANSMIT

The received audio is un­clear or distorted.

Your signal does not reach
as far away as usual.

• The [SPEAKER] switch is turned OFF.

• Microphone is not connected.

• RF gain is set too deeply and several
segments of the S-meter appear.

• The squelch is closed.

• Antenna is not properly matched to the
operating frequency.

• RF gain is set too deeply.

• Wrong tuner condition is selected in the
set mode.

• Wrong operating mode is selected.

• AGC is deactivated while receiving a
strong signal.

• Noise blanker is turned ON when receiv­ing a strong signal.

• The [CLARITY] control is rotated too far
clockwise or counterclockwise.

• The transmit power is set low.

• The antenna tuner is improperly matched
to the operating frequency when manual
tuning is selected.

• Turn ON the [SPEAKER] switch.

• Connect the microphone to the [MICRO­PHONE] connector.

• Push [FUNC], then [RX] to reset the RF
gain. (RF GAIN 9 applies audio.)

• Adjust the squelch to proper level or push
[SQL] to turn it OFF to receive weak sig­nals.

• Push [TUNE] to tune the using antenna
tuner or select “automatic tuning” in the
set mode when using an optional AT-

130.

• Push [FUNC], then [RX] to reset the RF
gain.

• Set the proper tuner for the connected
tuner.

• Push [MODE] to select the proper oper­ating mode.

• Push [AGC] to activate the AGC func­tion.

• Push [NB] to turn the noise blanker OFF.

• Adjust the [CLARITY] control to receive
proper audio output.

• Push [FUNC], then [TX] to reset the
transmit power. (RF-PWR 3 is maximum
power.)

• Push [TUNE] to tune the using antenna
tuner, or select “automatic tuning” in the
set mode.

p. 2
p. 2

p. 10

p. 10

p. 13

p. 10

p. 13

p. 9

p. 10

p. 10

p. 10

p. 9

p. 9
or
p. 13

23

Transmit signal is unclear
or distorted.

No contact is possible with
another station.
Frequency cannot be set
via the keypad.

All indicators appear
and the channel number

DISPLAY

cannnot be read.
FSK ITU channels cannot
be selected.

• CW or FSK mode is selected for voice
transmission.

• The wrong operation mode is selected.

• Microphone is too close to your mouth.

• Wrong transmit frequency is set. • Push [TX FREQ] to check and store the

• The [CE] key is not pushed (“►” does not
appear) before digit entry.

• 2182 kHz is selected with the [2182KHz]
switch.

• The highest contrast is selected in the set
mode.

• SITOR operation is set to OFF in the set
mode.

• Push [MODE] to select USB mode (or
AM, R3E, etc.).

• Push [MODE] to select the proper oper­ating mode.

• Speak into the microphone naturally and
do not hold the microphone too close to
your mouth.

correct transmit frequency.

• Push [CE] (“►” appears), then enter the
desired frequency.

• Push [2182KHz], then set the frequency.

• Set to the proper display contrast. p. 15

• Set “SITOR” to ON in the set mode. p. 13

p. 9

p. 9

–

p. 9

p. 8

p. 6

■ Specifications

SPECIFICATIONS AND OPTIONS

9

D GENERAL

• Frequency coverage:
Receive 500 kHz–29.999 MHz
Transmit 1.6– 2.9999 MHz 4.0– 4.9999 MHz

6.0– 6.9999 MHz 8.0– 8.9000 MHz

12.0– 13.9999 MHz 16.0– 17.9999 MHz

18.0– 19.9999 MHz 22.0– 22.9999 MHz

25.0– 27.5000 MHz

• Mode

: J3E(USB), H3E, J2B(AFSK),

F1B(FSK), R3E, A1A(CW)

( available modes differ with the

version)

• Number of channels :1136 (max.)

160 (user programmable)

662 (ITU FSK duplex)

• Antenna impedance : 50 ø nominal

• Usable temp. range :

• Frequency stability : ±10 Hz

( ±20 Hz above 15 MHz for General

• Power supply requirement : 13.6 V DC±15%

• Current drain :
:

• Dimensions : 2
(projections not included) : 11.3(W)×4.4(H)×12.8(D) in

• Weight (approx.) : 7.8 kg; 17.4 lb

242 (ITU SSB duplex), 72 (ITU SSB
simplex)

–30°C to +60°C (–22°F to +140°F)

(–30°C to +60°C; –22°F to +140°F)

version)

T

ransmit (max. output power) 30 A

Receive (max. audio output) 2.5 A

91.4(W)×116.4(H)×315(D) mm

D TRANSMITTER

• Output power : 150, 60, 20 W pep (se-

lectable)

( 60, 20 W only for 25 MHz

band)

• Spurious emissions : –65 dB typical

• Carrier suppression : 40 dB typical

• Unwanted sideband suppression: 55 dB typical

• Microphone impedance : 600 ø

D RECEIVER

• Sensitivity
J3E, R3E, J2B, F1B, A1A : 0.5 µV
(for 12 dB SINAD) 1.0 µV (1.6–1.7999 MHz)

6.3 µV (0.5–1.5999 MHz)
H3E (for 10 dB S/N) : 3.2 µV (1.8–29.9999 MHz)

•

Spurious response rejection :

(1.6–29.9999 MHz)

• Audio output power : 4.0 W
( at 10% distortion with a
4 ø load)

• Audio impedance : 4 ø

(4 to 8 ø acceptable)

• Clarity variable range : ±150 Hz

All stated specifications
notice or obligation.

are subject to change without

(1.8–29.9999 MHz)

6.3 µV (1.6–1.7999 MHz)
32 µV (0.5–1.5999 MHz)

70 dB typical

■ Options

MN-100

antenna matcher

Matches the transceiver to a
dipole antenna. Covers all HF
bands from 1.5 to 30 MHz.
8 m (26 ft.) × 2 antenna wires
are included.

AT-130

antenna matcher

Matches the transceiver to a
long wire antenna with a mini­mum of insertion loss.

MN-100L

antenna matcher

Matches the transceiver to a
long wire antenna. Covers all
HF bands from 1.5 to 30 MHz.
15 m (49 ft.) × 1 antenna wire
are included.

OPC-566

control cable

The optional control cable for
AT-130.

AH-710

folded dipole antenna

approx. 24.5 m; 80.3 ft

Covers from 1.9 to 30 MHz
band. Has an SO-239 connec
tor. Easy to assemble (non­kink construction).

-

Approved Icom optional equipment is designed for
optimal performance when used with an Icom trans­ceiver.
Icom is not responsible for the destruction or dam­age to an Icom transceiver in the event the Icom
transceiver is used with equipment that is not manu­factured or approved by Icom.

24

A5483H-1EX-6a
Printed in Japan
© 1997–2017 Icom Inc.

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