iCOM IC-M710 HF Marine Transceiver Instruction Manual

iCOM IC-M710 HF Marine Transceiver

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-M710.

EXPLICIT DEFINITIONS
The explicit definitions described below apply to this instruction manual.

fire or electric shock.

DISPOSAL

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 batteries) 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.

PRECAUTIONS

• WARNING! NEVER connect the transceiver directly to an AC outlet. This may pose a fire hazard or result in an electric shock.
• 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 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.
• 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 direct sunlight.
• DO NOT place the transceiver against walls, or put 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.

OPERATING RULES AND GUIDELINES

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

1. Give your call sign each time you call another vessel or coast station. If you have no call sign, identify your vessel name and the name of the licensee.

2. Give your call sign at the end of each transmission that lasts more than 3 minutes.

3. You must break and give your call sign at least once every 15 minutes. during long ship-to-shore calls.

4. Keep your unanswered calls short, less than 30 seconds.
   Do not repeat a call for 2 minutes.

5. Unnecessary transmissions are not allowed.

PRIORITIES

1. Read all rules and regulations on priorities and keep an up-to-date copy handy. Safety and distress calls take priority over all others.
2. False or fraudulent distress calls are prohibited and punishable by law.

PRIVACY

1. Information overheard but not intended for you cannot be lawfully used in any way.
2. Indecent or profane language is prohibited.

LOGS

1. All distress, emergency and safety calls must be recorded in complete detail. Log data activity is usually recorded in 24-hour time. Universal Time (UTC) is frequently used.
2. Adjustments, repairs, channel frequency changes and authorized modifications affecting the 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.

PANEL DESCRIPTION

Front panel

• This function is not installed in the IC-M710.

1. 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.

2. POWER SWITCH [POWER] Turns power ON or OFF.

3. SPEAKER SWITCH [SPEAKER]
   Turns the speaker ON or OFF.

   • appears in the display while the speaker is turned OFF.
   • Any external speaker connected to the rear panel is not turned OFF.

4. 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 holding [DIMMER].

5. 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.

6. GROUP CHANNEL SELECTOR [GROUP] Selects groups in 20 channel steps and ITU marine channel groups.
   NOTE: Some versions have no ITU channels.

7. 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)

8. 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.

9. FUNCTION SWITCH [FUNC] After pushing activate 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]··········· Reprograms the channel name (p. 12).
     NOTE: Function availability depends on versions.

10. CLARITY CONTROL [CLARITY] (p. 10) Shifts the receive frequency ±150 Hz for clear reception of an off-frequency signal.

Front panel

This function is not installed in the IC-M710.

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 keypad
  • pushing and holding [RX] (p. 12)
• Adjust the RF gain after pushing [FUNC] to reduce the receiver sensitivity. (p. 10)
• Stores a transmit frequency into a user channel (except the General version) when:
  • pushing [TX] (“ blinks)
  • pushing [CE] (“►” appears)
  • entering the desired frequency via the keypad
  • pushing and holding [TX] (p. 12)
• Select the transmit output power after pushing [FUNC]. (p. 9)
• Toggles the channel number input or frequency input. (p. 8)
  • “►” appears when frequency input is selected.
  • The channel selector and keypad change 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 the 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)

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)

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.

AGC OFF SWITCH [AGC] (p. 10)

• Deactivates the AGC function to receive weak signals blocked by strong adjacent signals.
• “ appears when the [AGC] switch is turned ON (stands for AGC deactivated).

MODE SWITCH [MODE]

• Temporarily selects an operating mode. Available modes differ from 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.

TRANSMIT FREQUENCY SWITCH [TX FREQ] (p. 9)

• Displays the transmit frequency and opens the squelch to check and monitor the transmit frequency.

2182 kHz SELECTION SWITCH (p. 6)

• ➥ Selects channel 0 (2182 kHz; distress call frequency).
• 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.

Display

1. RECEIVE INDICATOR
   Appears while receiving and when the squelch is open.

2. 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.

3. TRANSMIT INDICATOR

   • ➥ Appears when transmitting.
   • ➥ Blinks when the [TX] key is pushed for transmit frequency programming. (p. 12)

4. S/RF METER

   • ➥ Shows the relative received signal strength while receiving.
   • ➥ Shows output power while transmitting.

5. CHANNEL NAME READOUT

   • ➥ Shows the pre-programmed channel name (alphanumeric) during channel indication. (p. 6)
   • ➥ Shows the transmit frequency during frequency indication. (p. 6)

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

7. SCAN INDICATOR (p. 7)

   • Appears when the scan function is in use.
   • Pushing [SCAN] starts and stops the scan.

8. FUNCTION INDICATOR

   • Appears when the [FUNC] switch is pushed.
   • Some switches activate secondary functions.

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

10. AGC OFF INDICATOR (p. 10)
    Appears when the [AGC] switch is pushed to indicate the AGC function is deactivated.

11. MODE READOUT
    Shows the selected operating mode (type of emission).

12. SPEAKER OFF INDICATOR
    Appears when the [SPEAKER] switch is pushed to indicate the front panel speaker is deactivated.

13. CHANNEL READOUT

    • ➥ Shows the selected channel number during channel indication. (p. 6)
    • ➥ Shows the receive frequency during frequency indication. (p. 6)

14. SIMPLEX/DUPLEX INDICATORS
    These appear to show whether the selected channel is simplex or duplex.

15. FREQUENCY INDICATORS (p. 8)
    Appears when the frequency entry condition is selected for frequency selection.

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

SELECTING A CHANNEL/FREQUENCY

Selecting a channel
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.

NOTE: When Channel 0 and/or 2182 kHz is selected with the [2182KHz] switch, channel selection is NOT possible. In such a case, push [2182KHz] in advance.

Using the channel 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.

1. Be sure no “►” indicator appears on the display.
2. Rotate the [GROUP] selector to select the desired channel group as shown at right and/or below.
3. Rotate the [CHANNEL] selector to select the desired channel.

[EXAMPLE]: Selection of the [GROUP] selector

AII ITU channels are not available with some versions and ITU FSK channels can be hidden using set mode. (p. 13)

CHANNEL GROUP

CHANNEL NO.| DESCRIPTION| CHANNEL NO.| DESCRIPTION| CHANNEL NO.| DESCRIPTION
---|---|---|---|---|---

1 to 160

| User channels ([GROUP] selec- tor changes in 20 channels steps)| 8 – 1 to 8 – 9| 8 MHz ITU simplex channel| 2201 to 2253| 22 MHz ITU duplex channels
1201 to 1241| 12 MHz ITU duplex

channel

| 22 – 1 to 22 – 9| 22 MHz ITU simplex channels
401 to 427| 4 MHz ITU duplex

channels

| 12 – 1 to 12 – 9| 12 MHz ITU simplex

channels

| 2501 to 2253| 25 MHz ITU duplex channels
4 -1 to 4 – 9| 4 MHz ITU simplex channels| 1601 to 1656| 16 MHz ITU duplex channels| 25 – 1 to 25 – 9| 25 MHz ITU simplex channel
601 to 608| 6 MHz ITU duplex channels| 16 – 1 to 16 – 9| 16 MHz ITU simplex channel|

4001 to 25040

|

ITU FSK duplex channels (SITOR use) (No group separation)

6 – 1 to 6 – 9| 6 MHz ITU simplex channels| 1801 to 1815| 18 MHz ITU duplex channel
801 to 832| 8 MHz ITU duplex

channels

| 18 – 1 to 19 – 1| 18 MHz ITU simplex

channels

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

1. Be sure no “►” indicator appears on the display.
   • If appears, push [CE] and then it will disappear.
2. Enter the desired channel number via the keypad.
   • A user channel is selected when channel 1- 160 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.
3. Push [RX] to select the entered channel.

[EXAMPLE]: Selecting channel 153.

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.

Channel scan

Channel resume scan

Programmed scan

SCAN OPERATION

1. 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.
2. Push [SQL] to turn OFF the squelch function if the programmed scan is selected.
3. Push [FUNC] then [SQL] to start the scan.
4. To stop the scan, repeat step e again.
   • [CHANNEL] rotation and some other switches also stop the scan.

• 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.

Selecting a frequency

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.

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.

Using the channel selector

1. Select a channel which is programmed near the frequency you want receive.
2. Push the [CE] key to select frequency selection mode.
   • “►” appears on the display.
3. Rotate the [CHANNEL] selector to change the frequency.
4. To return to the previous frequency push [CE].
   • “►” disappears and the previous frequency or channel name appears.

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.

1. Select the memory channel to be used for general coverage use.
2. Push [CE] to select frequency selection mode.
   • “►” appears on the display.
3. Enter the desired frequency with 5 or 6 digits.
4. 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

RECEIVE AND TRANSMIT

Basic voice receive and transmit

• 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 position.
• ➥ The memory mode is selected.
• If necessary, push [CH/FREQ] to select the memory mode.

• Select the desired channel to be received with the [GROUP] and [CHANNEL] selectors.
• When receiving a signal, the S-meter shows the signal strength.
• Adjust [VOLUME] to the desired audio level when receiving a signal.
• If the received signal is in a different mode, push [MODE] to select the desired operating mode.
• 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).
• 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.
• 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.
• Release the PTT switch to return to receive.

Functions for transmit

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.
• Push and hold [TX FREQ] to monitor the transmit frequency.
• The display shows the transmit frequency.

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.

1. Push [FUNC] then [TX] to call up the following display.
2. 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)
3. Push [FUNC] or [CE] to return to the previous display.

Functions for receive

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.

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

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.

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

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.

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

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.

1. Push [FUNC] then [RX] to call up the following display.
2. Rotate the [CHANNEL] selector to set the desired minimum cutting level.
   • “0” to “9” are available.
   • S-meter shows the minimum permited level.
3. Push [FUNC] or [CE] to exit the RF gain display.

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.

CW operation (Depends on versions)

The transceiver has the following CW keying features selectable in the set mode, as described

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

1. Connect a CW keyer or an external electronic keyer to the ACC(1) socket, as shown at right.
2. Select the desired channel to operate in the A1A (CW) mode.
3. When the selected channel is not in the A1A (CW) mode, push [MODE] one or more times to select “A1A.”
4. Operate the CW keyer to transmit a A1A (CW) signal.

NOTE

• A1A mode is not available in some versions.
• CW narrow can be selected in the set mode when an optional filter is installed.

CW key connection

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.

1. Connect an FSK terminal unit as shown at right.
2. Select the desired channel.
   • FSK ITU channel group, ch 4001 to ch 25040, are available, depending on the version.
3. Push [MODE] one or more times to select either “FSK” or “J2B.”
4. Operate the FSK terminal unit.

NOTE

• FSK shift frequency and FSK polarity can be adjusted 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

USER CHANNEL PROGRAMMING

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

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

Receive Frequency

1. Select the desired user channel to be programmed.
   • Channel 1 to 160 (maximum) are programmable.
2. Push the [CE] key to select frequency selection mode.
   • “►” and a frequency appear on the display.
3. Enter the desired frequency via the keypad with 5 or 6 digits.
   • Or rotate the [CHANNEL] selector to change the frequency.
4. To change the operating mode (type of emission), push [MODE] one or more times.
5. Push and hold [RX] for 1 second to program the user channel.

Transmit frequency

1. Select the desired user channel to be programmed.
2. Push [TX].
   • “ ” blinks.
3. Push [CE] to select frequency selection mode.
   • “►” and frequency appear on the display.
4. 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).
5. Push and hold [TX] for 1 second to program.
6. Push [TX] to clear the “ ” blinking.

Channel name

1. Select the desired user channel to be programmed.
2. Push [CH/FREQ] to select channel indication.
3. Push [FUNC] and then [CE].
   • The channel name (alphanumeric) readout blinks.
4. Rotate the [GROUP] selector to cursor position and the [CHANNEL] selector for the message contents.
   • To return to the previous message, push [CE].
5. Push and hold [RX] to program the message.
   • Blinking stops.

Available characters

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.

1. Push [POWER] to turn power OFF.
2. 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.
3. Rotate the [GROUP] selector to select the desired item.
4. Rotate the [CHANNEL] selector to set the values or options for the selected item.
5. Turn power OFF and then ON again to exit the set mode.

Set mode contents

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.

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).

Automatic tuning operation
When the optional AT-130 AUTOMATIC ANTENNA TUNER is connected, tuning can be started automatically without the [TUNE] switch for instant operation.
If manual tuning is required, this automatic operation can be deactivated.

Scan type selection
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.

Scan speed
Selects scan speed as follows:

Selection| 1| 2| 3| 4| 5| 6| 7| 8| 9| 10
---|---|---|---|---|---|---|---|---|---|---
Channel Scan| 130| 260| 520| 1040| 2080| 4160| 8320| 16360| 33280| 66560
Channel resume

scan (sec./ch)

| 1| 2| 3| 4| 5| 6| 7| 8| 9| 10
Programmed scan

*(squelch open)**

| 10| 20| 40| 60| 90| 140| 210| 320| 480| 720

Faster Slower
*squelch closed: 10 ms/ch
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.

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.

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.

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)

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.

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

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.

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

CONNECTIONS AND INSTALLATION

Connections on the rear panel

1. ANTENNA CONNECTOR (p. 20)
   Connects a 50 ø HF band antenna with a 50 ø matched coaxial cable and a PL-259 plug.

2. GROUND TERMINAL
   IMPORTANT! Connects to a ship’s (or vehicle’s) ground. See p. 19 for details.

3. ACC(1) and ACC(2) SOCKETS
   See p. 17 for details.

4. CLONE JACK
   For Dealer use only.

5. REMOTE SOCKET (p. 18) REMOTE socket for the General version.

6. EXTERNAL SPEAKER JACK
   Connects a 4 to 8 ø external speaker using a 1⁄4” monaural plug. This external audio is not muted by the [SPEAKER] switch on the front panel.

7. TUNER RECEPTACLE
   Connects a control cable to an optional AT-130 antenna tuner. A female connector is supplied for the connection.

8. 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 battery. This will damage the transceiver.

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

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

Connector information

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

3

| ****

SEND

| Input/output pin.

Goes to the ground when transmitting. When grounded, transmits.

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

Connected in parallel with ACC(2) pin 3.

4| MOD| Modulator input.

Usable when pin 3 is grounded.

| Input impedance: 10 kø

Input level: Approx. 100 mV rms

5| AF| AF detector output.

Fixed, regardless of the [AF] position.

| Output impedance: 4.7 kø Output level: 100–300 mV rms
6| SCAN| Starts scanning when grounded.| Scan operation: Less than 0.6 V
7| 13.6 V| 13.6 V output when power is ON.| Output current: Max. 1 A

Connected in parallel with ACC(2) pin 7.

8

| ****

ALC

| ****

ALC voltage input.

| Control voltage: –3 to 0 V

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

| 1| MOD+| Modulation input from an external terminal unit.| Input impedance: 600 ø

Input level: Approx. 100 mV rms

2| MOD–| Coaxial ground for MOD+.|
3| AF+| AF detector output for an external terminal unit.| Output impedance: 600 ø

Output level: 0.25–2.5 V rms

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.|
DC 13.6V| PIN| PIN NAME| DESCRIPTION| SPECIFICATIONS
---|---|---|---|---

__

|

1–3

|

|

+ DC input

|

Max. power consumption: 30 A

4–6

|

–

|

_ DC input

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.

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 electrical shock)

• Gas or electrical pipe
• Fuel tank
• Oil-catch pan

Ground system example

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

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

MN-100/MN-100L ANTENNA MATCHERS

AT-130 AUTOMATIC ANTENNA TUNER

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.

Mounting

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.

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.

Mounting example

Transceiver dimensions

Disassembling the transceiver

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

1. Remove the 9 screws from the rear panel, then remove the rear frame and rear sealing.
2. Remove the transceiver case.
3. When reassembling the transceiver, check the following 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.

Fuse replacement

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

DC power cable fuse

Circuitry fuse

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.

is improperly connected.

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

| •  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

RECEIVE| No sound comes from the speaker.| •  The [SPEAKER] switch is turned OFF.

• The microphone is not connected.

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

•  The squelch is closed.

| •  Turn ON the [SPEAKER] switch.

•  Connect the microphone to the [MICRO- PHONE] connector.

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

•  Adjust the squelch to the proper level or push

[SQL] to turn it OFF to receive weak signals.| p. 2

p. 2

p. 10

p. 10

Sensitivity is too low and only strong signals are audible.| • The antenna is not properly matched to the operating frequency.

•  RF gain is set too deeply.

•  Wrong tuner condition is selected in the set mode.

| •  Push [TUNE] to tune the 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.

| p. 13

p. 10

p. 13

The received audio is clear or distorted.| •  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.

| •  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.

| p. 9

p. 10

p. 10

p. 10

TRANSMIT| Your signal does not reach as far away as usual.| •  The transmit power is set low.

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

•  CW or FSK mode is selected for voice transmission.

| •  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.

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

| p. 9

p. 9 or

p. 13

p. 9

The transmit signal is unclear or distorted.| •  The wrong operation mode is selected.

• The microphone is too close to your mouth.

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

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

your mouth.

| p. 9

–

No contact is possible with

another station.

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

correct transmit frequency.

| p. 9
DISPLAY| Frequency cannot be set via the keypad.| •  The [CE] key is not pushed (“►” does not appear) before digit entry.

•  2182 kHz is selected with the [2182KHz]

switch.

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

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

| p. 8

p. 6

All indicators appear and the channel number

cannot be read.

| •  The highest contrast is selected in the set mode.| •  Set to the proper display contrast.| p. 15
FSK ITU channels cannot

be selected.

| •  SITOR operation is set to OFF in the set

mode.

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

SPECIFICATIONS AND OPTIONS

Specifications

GENERAL

TRANSMITTER

RECEIVER

Options

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

• Matches the transceiver to a long wire antenna with a minimum of insertion loss.
• The optional control cable for AT-130.

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.

CONTACT

• A5483H-1EX-6a
• Printed in Japan
• © 1997–2017 Icom Inc.
• 1-1-32 Kamiminami, Hirano-ku, Osaka 547-0003 Japan

References

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• Manual-Hub.com – Free PDF manuals!

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