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' Icom Ic m710rt Instruction Manual'



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INSTRUCTION MANUAL




MF/HF MARINE TRANSCEIVER
iM710RT
     IMPORTANT                                                  EXPLICIT DEFINITIONS
     READ THIS INSTRUCTION MANUAL CAREFULLY                     The explicit definitions described below apply to this
     before attempting to operate the transceiver.              instruction manual.

     SAVE THIS INSTRUCTION MANUAL--This manual                      WORD                DEFINITION
     contains important safety and operating instructions for             Personal injury, fire hazard or electric
                                                                 RWARNING shock may occur.
     the IC-M710RT MF/HF MARINE TRANSCEIVER.
                                                                  CAUTION       Equipment damage may occur.
                                                                                If disregarded, inconvenience only. No risk
                                                                    NOTE        of personal injury, fire or electric shock.


                                                                 NOTE: The IC-M710RTGMDSS version has a
                                                                   high-stability crystal oscillator unit. This unit draws a
                                                                   slight current even when power to the transceiver
                                                                   is OFF. To prevent battery exhaustion when dock-
                                                                   ing your vessel for extended periods, unplug the
                                                                   DC cable from the DC power receptacle.



     PRECAUTIONS

     RWARNING! NEVER connect the transceiver to an              DO NOT use chemical agents such as benzene or al-
     AC outlet directly. This may pose a fire hazard or re-     cohol when cleaning, as they can damage the trans-
     sult in an electric shock.                                 ceiver's surfaces.

     RWARNING! NEVER mount the transceiver over-                In maritime mobile operation, KEEP the transceiver
     head. The weight of the transceiver is approximately 8     and microphone as far away as possible (at least 1 m)
     kg., but its apparent weight will increase several fold    from the magnetic navigation compass to prevent er-
     due to wave shocks and vibration. The transceiver          roneous indications.
     must be mounted on a flat hard surface only.
                                                                USE an Icom microphone and/or handset only (sup-
     NEVER connect a power source of more than 16 V DC          plied or optional). Other brands may have different pin
     such as a 24 volt battery. This connection will ruin the   assignments and may damage the transceiver.
     transceiver.
                                                                AVOID using or placing the transceiver in areas with
     NEVER place the transceiver where normal operation         temperatures below 20C (4F) or above +60C
     of the ship or vehicle may be hindered or where it         (+140F).
     could cause bodily injury.
                                                                AVOID connecting the transceiver to a power source
     Place unit in a secure place to avoid inadvertent use      using reverse polarity. This connection will not only
     by children.                                               blow fuses but may also damage the transceiver.

     NEVER expose the transceiver to rain, snow or any          AVOID placing the transceiver in excessively dusty en-
     liquids.                                                   vironments or in direct sunlight.

     There are two types of grounding systems available for     AVOID placing the transceiver against walls or putting
     the IC-M710RT--Negative Ground and Floating                anything on top of the transceiver. This will obstruct
     Ground--NEVER install the negative ground type to a        heat dissipation.
     plus-grounding ship. Such a connection might blow
     fuses and is not usable.




ii
IN CASE OF EMERGENCY (for maritime operation)
If your vessel requires assistance, contact other ves-            Or, transmit your distress call using digital selective
sels and the Coast Guard by sending a distress call on            calling on 2187.5 kHz.
2182 kHz.


  USING 2182 kHz WITH VOICE                                         USING DIGITAL SELECTIVE CALLING
                                                                   (Only for GMDSS versions with an optional GM-
  Push [2182kHz] to select the emergency fre-                      110DSC DSC TERMINAL UNIT)
   quency.

  Push [ALARM] and [TX FREQ] for 1 sec. to trans-                  When immediate help is needed
   mit a 2-tone alarm signal for at least 30 sec.
                                                                    Push and hold [EMERGENCY] on the GM-
    The transceiver automatically stops the alarm after 50
                                                                      110DSC for 5 sec., until the short beeps become
     sec.
                                                                      one long beep, to send the distress call.
  Push [ALARM] to turn the alarm transmission off,
                                                                    After 2182 kHz is automatically selected, transmit
   then push and hold the PTT switch on the micro-
                                                                      the appropriate information as at left using voice.
   phone and send the following information:

   1. "MAYDAY, MAYDAY, MAYDAY."                                    When a potential problem exists
   2. "THIS IS . . . . . . . . . . . " (name of vessel)             Push [SEL] on the GM-110DSC, then select "all
                                                                      ships call" with [ENT] and the DATA SELECTOR.
   3. "LOCATED AT . . . . . . . " (vessel's position)
                                                                    Push and hold [CALL] on the GM-110DSC for 5
   4. Give the reason for the distress call.                          sec., until short beeps become one long beep, to
                                                                      use the "all ships call" function.
   5. Explain what assistance you need.
                                                                    After the pre-selected frequency is selected,
   6. Give additional information:
                                                                      transmit the appropriate information using voice.
       Vessel type
                                                                      DSC equipped ships may monitor your transmission.
       Vessel length
       Vessel color
       Number of people onboard.




VERSIONS
The following versions are available for the
IC-M710RT:
 Version         Ground type                                  Description
                                        Corrosion-resistant exterior.
               Negative ground
                                        High stability crystal and FSK narrow filter built-in.
 GMDSS               and
                                        Optional DSC terminal unit can be connected.
               Floating ground
                                        2182 kHz 2-tone alarm is built-in.
               Negative ground          2182 kHz 2-tone alarm is built-in.
 Marine              and                FSK/CW narrow filter is optional.
               Floating ground          All SSB/FSK ITU channels available.
                                        2182 kHz 2-tone alarm is optional.
               Negative ground
 General                                FSK/CW narrow filter is optional.
                    only
                                        ITU channels are optional.



                                                                                                                            iii
     TABLE OF CONTENTS

     IMPORTANT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ii              6 SET MODE . . . . . . . . . . . . . . . . . . . . . . . . . . 1215
     EXPLICIT DEFINITIONS . . . . . . . . . . . . . . . . . . . . . ii                       I Set mode operation . . . . . . . . . . . . . . . . . . . . 12
     PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . ii                  I Set mode contents . . . . . . . . . . . . . . . . . . . . . 12
     IN CASE OF EMERGENCY . . . . . . . . . . . . . . . . . . iii
     VERSIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iii            7 CONNECTIONS AND INSTALLATION . . . . 1625
     TABLE OF CONTENTS . . . . . . . . . . . . . . . . . . . . . iv                          I Supplied accessories . . . . . . . . . . . . . . . . . . . 16
                                                                                             I Attaching 1 remote controller . . . . . . . . . . . . . 16
     1 OPERATING RULES AND GUIDELINES . . . . . . 1                                          I Attaching 2 remote controllers . . . . . . . . . . . . 17
                                                                                                D Set ID number . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
     2 PANEL DESCRIPTION . . . . . . . . . . . . . . . . . . 25                                D Intercom operation . . . . . . . . . . . . . . . . . . . . . . . . 17
       I Front panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2               I Attaching 2 remote controllers and a PC . . . .                           18
       I Main unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4             I Notes for remote control . . . . . . . . . . . . . . . . .                18
          D HM-120 microphone keys . . . . . . . . . . . . . . . . . . . 4                   I Connections on rear panel . . . . . . . . . . . . . . .                   19
       I Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5             I Connector information . . . . . . . . . . . . . . . . . .                 20
                                                                                             I Ground connection . . . . . . . . . . . . . . . . . . . . .               22
     3 SELECTING A CHANNEL/FREQUENCY . . . . 68
                                                                                             I Power source . . . . . . . . . . . . . . . . . . . . . . . . .            22
       I Selecting a channel . . . . . . . . . . . . . . . . . . . . . 6
                                                                                             I Antenna . . . . . . . . . . . . . . . . . . . . . . . . . . . . .         23
          D Using the channel selector . . . . . . . . . . . . . . . . . . 6
                                                                                                D MN-100/MN-101L . . . . . . . . . . . . . . . . . . . . . . . . 23
          D Using the keypad . . . . . . . . . . . . . . . . . . . . . . . . . . 7
                                                                                                D AT-130 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
          D Scan functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
                                                                                                D Non-Icom tuner . . . . . . . . . . . . . . . . . . . . . . . . . . 23
       I Selecting a frequency . . . . . . . . . . . . . . . . . . . . 8
                                                                                             I Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
          D Using the channel selector . . . . . . . . . . . . . . . . . . 8
                                                                                                D Mounting location . . . . . . . . . . . . . . . . . . . . . . . . . 24
          D Using the keypad . . . . . . . . . . . . . . . . . . . . . . . . . . 8
                                                                                                D Mounting example . . . . . . . . . . . . . . . . . . . . . . . . 24
     4 RECEIVE AND TRANSMIT . . . . . . . . . . . . . . 911                                    D Transceiver dimensions . . . . . . . . . . . . . . . . . . . . 24
       I Basic voice receive and transmit . . . . . . . . . . . 9                            I Installing internal options . . . . . . . . . . . . . . . . 25
       I Functions for transmit . . . . . . . . . . . . . . . . . . . . 9                       D Opening the case . . . . . . . . . . . . . . . . . . . . . . . . . 25
          D Transmit frequency check . . . . . . . . . . . . . . . . . . . 9                    D Installing an optional filter and alarm unit . . . . . . 25
          D Transmit power selection . . . . . . . . . . . . . . . . . . . . 9               I Fuse replacement . . . . . . . . . . . . . . . . . . . . . . 25
       I Functions for receive . . . . . . . . . . . . . . . . . . . 10
                                                                                           8 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . 26
          D Squelch function . . . . . . . . . . . . . . . . . . . . . . . . .        10
          D Noise blanker . . . . . . . . . . . . . . . . . . . . . . . . . . . .     10   9 SPECIFICATIONS AND OPTIONS . . . . . . . . . . 27
          D AGC off function . . . . . . . . . . . . . . . . . . . . . . . . . .      10     I Specifications . . . . . . . . . . . . . . . . . . . . . . . . . 27
          D RF gain setting . . . . . . . . . . . . . . . . . . . . . . . . . . .     10     I Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
          D Clarity control . . . . . . . . . . . . . . . . . . . . . . . . . . . .   10
       I CW operation . . . . . . . . . . . . . . . . . . . . . . . . . 11
       I FSK operation . . . . . . . . . . . . . . . . . . . . . . . . . 11
       I Cross channel operation . . . . . . . . . . . . . . . . . 11

     5 USER CHANNEL PROGRAMMING . . . . . . . . . 12
       I Programming a frequency . . . . . . . . . . . . . . . 12
          D Receive frequency . . . . . . . . . . . . . . . . . . . . . . . . 12
          D Transmit frequency . . . . . . . . . . . . . . . . . . . . . . . 12
          D Channel names . . . . . . . . . . . . . . . . . . . . . . . . . . 12




iv
                     OPERATING RULES AND GUIDELINES                                                           1
 CALL PROCEDURES                                            LOGS
Calls must be properly identified and time limits must      All distress, emergency and safety calls must be
be respected.                                                recorded in complete detail. Log data activity is usu-
                                                             ally recorded in 24 hour time. Universal Time (UTC)
 Give your call sign each time you call another vessel       is frequently used.
  or coast station. If you have no call sign, identify
  your vessel name and the name of the licensee.            Adjustments, repairs, channel frequency changes
                                                             and authorized modifications affecting electrical op-
 Give your call sign at the end of each transmission         eration of the equipment must be kept in the main-
  that lasts more than 3 min.                                tenance log; entries must be signed by the
                                                             authorized licensed technician performing or super-
 You must break and give your call sign at least once
                                                             vising the work.
  every 15 min. during long ship-to-shore calls.

 Keep your unanswered calls short, less than 30 sec.
  Do not repeat a call for 2 min.                           RADIO LICENSES
                                                           (1) SHIP STATION LICENSE
 Unnecessary transmissions are not allowed.                You must have a current radio station license before
                                                           using the transceiver. It is unlawful to operate a ship
                                                           station which is not licensed.
 PRIORITIES
 Read all rules and regulations pertaining to priorities   Inquire through your dealer or the appropriate govern-
  and keep an up-to-date copy handy. Safety and dis-       ment agency for a Ship-Radiotelephone license appli-
  tress calls take priority over all others.               cation. This government-issued license states the call
                                                           sign which is your craft's identification for radio pur-
 False or fraudulent distress calls are prohibited and     poses.
  punishable by law.
                                                           (2) OPERATOR'S LICENSE
                                                           A Restricted Radiotelephone Operator Permit is the li-
 PRIVACY                                                   cense most often held by small vessel radio operators
 Information overheard but not intended for you can-       when a radio is not required for safety purposes.
  not be lawfully used in any way.
                                                           The Restricted Radiotelephone Operator Permit must
 Indecent or profane language is prohibited.               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 en-
                                                           tries.

                                                           Keep a copy of the current government rules and reg-
                                                           ulations handy.




                                                                                                                      1
    2            PANEL DESCRIPTION


    I Front panel (controller)
                                !9 !8                !7               !5           !4               !3 !6 !2


                                                                                   MF/HF MARINE TRANSCEIVER
                       iM 710
                                                                                                                                    1         2         3
                                              TX FREQ
                                                                 ALM
                                                                 RX                                                                 4         5         6

                                                                               DUP             SIMP STANDBY
                                              2182KHz            TUNE                                                    AGC
                                               RESET             TX                                                   SQL N B       7         8         9


                                                                 DSC                                                  SCAN F                                 !1
                                           [ALARM] + [TX FREQ]        0        1          2           3           4        A        CE        0         
                                            FOR ALARM TX
                                                                  MODE     AGC                 NB           SQL         FUNC
                                                                                                                                                   CH/FREQ

                                               ALARM                                                                                     RX        TX

                                                                  GROUP                 TUNE              CHANNEL


                                                     VOLUME                                                                               CLARITY
         MICROPHONE
                                 SPEAKER
                        POWER

                                 DIMMER




            q            w      e r                     t                  y                   u                       i        o             !0

    q MICROPHONE CONNECTOR (p. 20)                                                 u ANTENNA TUNE SWITCH [TUNE] (p. 9)
      Accepts the supplied microphone or an optional                                 Tunes the connected tuner to the antenna.
      handset.                                                                           Activates only when an optional antenna tuner such as
                                                                                          Icom's AT-130/E is connected.
     NOTE: No audio is output via the speaker when the
       microphone or handset is not connected.                                      NOTE: When selecting "automatic tuning" in set
                                                                                        mode, pushing this switch is not necessary to tune
    w POWER SWITCH [POWER]                                                              the antenna. (p. 13)
      Turns power on and off.
                                                                                   i CHANNEL SELECTOR [CHANNEL] (p. 6)
    e SPEAKER SWITCH [SPEAKER]                                                        Selects an operating channel within the selected
      Turns the built-in speaker on and off.                                           channel group such as ITU channels.
       "" appears in the display while the speaker is turned                              User channels can be selected from 1 to 160 (max.)
        off.                                                                                 in sequence regardless of the channel group.
       Any external speaker connected to the rear panel is not                          Changes the operating frequency* after [CE] is
        turned off.                                                                      pushed (while "s" appears).
                                                                                            The changed frequency is not programmed in this
    r DISPLAY INTENSITY SWITCH [DIMMER]
                                                                                             way.
       Toggles the display backlight on and off.
       While pushing, rotate [CHANNEL] to adjust the                               o FUNCTION SWITCH [FUNC]
        backlighting to one of 4 levels.                                             After pushing, activates the secondary functions of
       While pushing, rotate [GROUP] to adjust the dis-                              these switches:
        play contrast to one of 10 levels.                                           [RESET] . . Deactivates external control such as
    t VOLUME CONTROL [VOLUME]                                                                         from a DSC terminal unit when con-
      Adjusts the audio output level.                                                                 nected.
                                                                                     [SQL] . . . . . Starts and stops scan (p. 7).
       Audio does not come from the speaker when:
         A microphone is not connected.
                                                                                     [SPEAKER] Activates intercom function (p. 17).
         The [SQL] switch is turned on and no signal is being
                                                                                     [RX] . . . . . . Sets RF gain (p. 10).
          received.
                                                                                     [TX] . . . . . . Selects transmit power (p. 9).
                                                                                     [CE] . . . . . . Reprograms the channel name (p.
    y GROUP CHANNEL SELECTOR [GROUP]                                                                  12).
      Selects groups in 20 channel steps and ITU marine                             NOTE: Function availability depends on version.
      channel groups.
                                                                                   !0 CLARITY CONTROL [CLARITY] (p. 10)
     NOTE: Some versions have no ITU channels.
                                                                                      Shifts the receive frequency 150 Hz for clear re-
                                                                                      ception of an off frequency signal.
2
                                                                                             PANEL DESCRIPTION         2


!1 KEYPAD                                                      !4 AGC OFF SWITCH [AGC] (p. 10)
 RX   Enters the selected channel number (or fre-                 Deactivates the AGC function to receive weak sig-
       quency*) for direct channel selection. (p. 7)              nals blocked by strong adjacent signals.
      Stores a receive frequency into a user chan-                "" appears when the [AGC] switch is turned on
       nel or ITU simplex channel when:                            (stands for AGC deactivated).
           pushing [CE] ("s" appears)
           entering the desired frequency via the keypad      !5 MODE SWITCH [MODE] (p. 9)
           pushing and holding [RX] (p. 12)                      Selects an operating mode temporarily. Available
         Adjusts the RF gain after pushing [FUNC] to              modes differ with version.
         reduce the receiver sensitivity. (p. 10)                 J3E (USB), H3E, J2B (AFSK), FSK, R3E and A1A (CW)
         Stores a transmit frequency into a user chan-             modes are available.
  TX
         nel (except General versions) when:                      The temporary mode is cleared and the previous mode
           pushing [TX] ("$" flashes)                             appears when changing a channel.
           pushing [CE] ("s" appears)
                                                               !6 OVEN INDICATOR (GMDSS version only)
           entering the desired frequency via the keypad
                                                                  Internal high-stability crystal oscillator unit contains
           pushing and holding [TX] (p. 12)
                                                                  a temperature-compensating oven heater. This
         Selects the transmitter channel for cross
                                                                  high-stability crystal oscillator improves frequency
         channel operation (Europe versions only)
                                                                  stability.
         when:
                                                                  "STANDBY" appears when power to the main unit is
           pushing [TX] ("$" flashes)
                                                                   turned off.
           entering the desired channel number via the key-
            pad                                                !7 TRANSMIT FREQUENCY SWITCH [TX FREQ]
         Selects the transmit output power after push-             (p. 9)
         ing [FUNC]. (p. 9)                                       Displays the transmit frequency and opens the
         Toggles the channel number input and fre-                squelch to check and monitor the transmit fre-
  CE
         quency input.* (p. 8)                                    quency.
          "s" appears when frequency input* is selected.      !8 2182 kHz SELECTION SWITCH
           The channel selector and keypad changes the           [2182kHz  RESET ] (p. iii)
            frequency while "s" appears.                           Selects channel 0 (2182 kHz; distress call fre-
         Clears the entered digit and retrieves the pre-            quency).
         vious channel (or frequency*) while entering                The channel selector does not function when select-
         numbers. (p. 7)                                              ing channel 0.
         Enters the name programming condition,                   Ignores external control and gives the front panel
         after pushing [FUNC], for changing the chan-             control priority when an external controller
         nel name. (p. 12)                                        (NMEA format) is connected.
        Toggles the channel and frequency indica-
         tions. (p. 6)                                         !9 ALARM SWITCH [ALARM] (p. iii)
CH/FREQ
         Enters "" for ITU simplex channels. (p. 7)               Emits a distress alarm signal from the speaker.
                                                                   Transmits a distress alarm or alarm testing signal
  0      Enter channel number with up to 4 or 5 digits              when pushed together with the [TX FREQ]
         when "s" does not appear. (p. 7)                           switch.
  to     Enter the frequency with up to 6 digits* when
   9
         "" appears. (p. 8)                                     NOTE: General versions are not equipped with this
                                                                  [ALARM] switch.
!2 SQUELCH SWITCH [SQL] (p. 10)
    Activates the voice squelch function to reject un-
     desired background noise while no signal is
     being received.
        The squelch opens only when the received signal
         contains no 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.
                                                               *Some versions do not have frequency selection and fre-
                                                                quency indication.
                                                                                                                             3
    2   PANEL DESCRIPTION




    I Main unit (controller detached)

                          q                w         e        r




                            t



    q RS-232C CONNECTOR (p. 18)                              D HM-120 microphone keys
      Connects the IC-M710RT to a PC via an RS-232C          The "P" key on the HM-120 HAND MICROPHONE can be
      cable for remote control of transceiver function       set to function as the [MODE], [NB], [AGC], [SQL] or
      using the optional RS-710RT software.                  [TUNE] keys on the remote controller. (The YZ keys
                                                             function the same as the [CHANNEL] selector). Also,
    w POWER INDICATOR                                        using set mode (p. 15) these keys can be deactivated
      Appears while power is turned on.                      if desired.
    e CONTROLLER CONNECTOR                                   While pushing [P] on the microphone and the switch
      Connects the main body of the IC-M710RT to the         on the remote controller whose function you want to
      front panel (controller) when detached from the        assign (see above), turn power ON.
      main body.                                              Repeat this to assign a different key.

    r CONTROLLER CONNECTOR (pgs. 16, 17)
      Same as above.

    t POWER SWITCH
      Same function as the power switch ([POWER]) on
      the front panel.
         Only available on the Europe and GMDSS versions.




4
                                                                                              PANEL DESCRIPTION          2


I Display
                                  !7                   !6     !5                 !4               !3



     q           ALM
     w           RX
                                          DUP               SIMP
     e           TUNE                                                                       AGC                   !2
     r           TX                                                                      SQL N B                  !1

     t           D SC                                                                    SCAN F
                              0          1            2             3            4            A



                                   y            u                                    i    o            !0

q ALARM INDICATOR (p. iii)                                    i SQUELCH INDICATOR (p. 10)
  Appears when the alarm function is activated such             Appears when the squelch is on.
  as for an alarm test or distress alarm transmission.
   Not available in General version.                         o SCAN INDICATOR (p. 7)
                                                                Appears when the scan function is in use.
w RECEIVE INDICATOR (p. 10)                                      The scan function is not available on some versions.
  Appears while receiving and when the squelch is                 Pushing [FUNC] then [SQL] starts and stops scan.
  open.
                                                              !0 FUNCTION INDICATOR
e TUNE INDICATOR (p. 9)                                          Appears when the [FUNC] switch is pushed.
  Flashes while the connected antenna tuner, such as
  Icom's AT-130, is being tuned.                              !1 NOISE BLANKER INDICATOR (p. 10)
   Tuning starts when transmitting on a new frequency or        Appears when the [NB] switch is turned on.
    pushing the [TUNE] switch.
                                                              !2 AGC OFF INDICATOR (p. 10)
r TRANSMIT INDICATOR                                             Appears when the [AGC] switch is pushed to indi-
   Appears when transmitting. (p. 9)                             cate the AGC function is deactivated.
   Flashes when the [TX] key is pushed for transmit
                                                              !3 MODE READOUT
    frequency programming. (p. 12)
                                                                 Shows the selected operating mode (type of emis-
t DSC INDICATOR (p. iii)                                         sion).
  Appears when an optional GM-110DSC DSC TERMI-
                                                              !4 SPEAKER OFF INDICATOR
  NAL UNIT controls transceiver functions.
                                                                 Appears when the [SPEAKER] switch is pushed to
   The GM-110DSC can be connected to GMDSS versions
                                                                 indicate the front panel speaker is deactivated.
    only.
                                                              !5 CHANNEL READOUT
y S/RF METER
                                                                  Shows the selected channel number during
   Shows the relative received signal strength while
                                                                   channel indication. (p. 6)
    receiving.
                                                                  Shows the receive frequency during frequency in-
   Shows output power while transmitting.
                                                                   dication. (p. 9)
   Shows antenna current level when an optional
    AT-130E HF ANTENNA TUNER is connected (Europe             !6 SIMPLEX/DUPLEX INDICATORS
    versions only).                                              These appear to show whether the selected chan-
                                                                 nel is simplex or duplex.
u CHANNEL/VFO INDICATOR
   Shows the pre-programmed channel name (al-                 !7 FREQUENCY INDICATORS (p. 8)
    phanumeric) during channel indication. (p. 6)                Appear when the frequency entry condition* is se-
      Some versions have no channel name function and           lected for frequency selection.
       show receive frequency instead.                              The [CE] key toggles the indicator ON and OFF.
   Shows the transmit frequency during frequency                   * Some versions have no frequency entry condition.
   indication. (p. 6)
   Shows transmit channel number during cross
   channel operation (Europe versions only). (p. 11)                                                                         5
    3             SELECTING A CHANNEL/FREQUENCY


    I Selecting a channel
    The transceiver has 160 user channels and ITU chan-               NOTE: When channel 0 and/or 2182 kHz is se-
    nels. However, the number of user channels can be                    lected with the [2182KHz] switch, channel selection
    optionally restricted and ITU channels are not available             is NOT possible. In such cases, push [2182KHz] in
    with some versions.                                                  advance.

                                      ALM                                                      ALM
                                      RX                                                       RX
                                                 DUP                                                   DUP
                                                                   AGC                                                          AGC
     CHANNEL INDICATION               TX                                                       TX
                                      D SC                           F                         DSC                                F


                 CH/FREQ                  ALM                                                   ALM
                                          RX                                        CE          RX
                                                   DUP                                                   DUP
     FREQUENCY INDICATION                                            AGC                                                         AGC
                                          TX                                                    TX
                                          D SC                           F                      DSC                                   F

                                                  CHANNEL SELECTION MODE                 FREQUENCY SELECTION MODE
                                                      Channel can be selected            Frequency can be changed
      NOTE: Channel name (alphanumeric) may not
         appear during channel indication depending on
         set mode settings (p. 14).


     D Using the channel selector                                    [EXAMPLE]: Selection with the [GROUP] selector
     The transceiver has two large controls for group se-                       1        J3E                     401      J3E
     lection and channel selection. The [GROUP] selector                     WWV                               4.357.0
     changes channels in 20 channel increments and se-
     lects ITU channel groups*; and the [CHANNEL] se-                          21        J3E                     4-1      J3E
     lector selects each channel.                                             KMI                              4A LTD




                                                                                                                                      ITU SSB channels*
                                                                               41        J3E                     601      J3E
      Make sure no "s" indicator appears on the display.
                                                                             WOM                               6.501.0
        ALM
        RX
                  DUP
                                    AGC                                        61        J3E
        TX
        DSC                           F                                      WOO                                 2501     J3E
                                                                                                               26.145.0
           If appears, push [CE] to delete it.

      Rotate the [GROUP] selector to select the desired                       121        J3E                     25-1     J3E
        channel group as shown at right and/or below.                        FAX                                FAX
      Rotate the [CHANNEL] selector to select the de-                                                                                 channels*
                                                                                                                                      ITU FSK
                                                                              141        J3E                    4001      FSK
        sired channel.                                                       SHP/SHP                           4.210.5


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



    CHANNEL GROUPS
      CHANNEL NO.               DESCRIPTION                        CHANNEL NO.                      DESCRIPTION
      1 to 160             User channels*1                          1601to 1656                16 MHz ITU duplex channels
      401 to 427           4 MHz ITU duplex channels                16-1 to 16-9               16 MHz ITU simplex channels
      4-1 to 4-9           4 MHz ITU simplex channels               1801 to 1815               18 MHz ITU duplex channels
      601 to 608           6 MHz ITU duplex channels                18-1 to 18-9               18 MHz ITU simplex channels
      6-1 to 6-9           6 MHz ITU simplex channels               2201 to 2253               22 MHz ITU duplex channels
      801 to 832           8 MHz ITU duplex channels                22-1 to 22-9               22 MHz ITU simplex channels
      8-1 to 8-9           8 MHz ITU simplex channels               2501 to 2510               25 MHz ITU duplex channels
      1201 to 1241         12 MHz ITU duplex channels               25-1 to 25-9               25 MHz ITU simplex channels
      12-1 to 12-9         12 MHz ITU simplex channels              4001 to 25040              ITU FSK duplex channels*2
    *1[GROUP] selector changes in 20 channels steps.
    *2SITOR use--no group separation.
6
                                                                              SELECTING A CHANNEL/FREQUENCY                3


D Using the keypad                                                  [EXAMPLE]: Selecting channel 153
Direct channel selection via the keypad is available                                       ALM
for quick channel selection.                                                               RX
                                                                                                   DUP
                                                                                                                    AGC
                                                                                           TX
                                                                                1
 Make sure "s" does not appear on the display.                                             DSC                        F

   If it appears, push [CE] to delete it.                                                 ALM
 Enter the desired channel number via the keypad.                                          RX
                                                                                                   DUP
                                                                                                                    AGC
                                                                                           TX
   A user channel is selected when channel 1160 is input                       5         DSC                        F
    (max. number may be optionally restricted).
                                                                                           ALM
   An ITU SSB channel is selected when channel num-                                       RX
                                                                                                   DUP
                                                                                                                    AGC
    bers higher than 401 are input (not available for some                                 TX
                                                                                 3
    versions).                                                                             DSC                        F

   An ITU FSK channel is selected when channel numbers                                    ALM
    higher than 4001 are input (not usable according to set                                RX
                                                                                                   DUP
                                                                                                                    AGC
    mode setting).                                                              RX
                                                                                           TX
                                                                                           DSC                        F
   The "" key can be used for selecting an ITU simplex
    channel.                                                                               ALM

 Push [RX] to select the entered channel.
                                                                                           RX
                                                                                                   DUP
                                                                                                                    AGC
                                                                                           TX
                                                                                           DSC                        F




D Using scan functions                                              Channel scan and channel resume scan increase
   (Some versions do not have these functions)                      channels within a 5 channel range such as ch 1 to ch
The transceiver has automatic channel or frequency                  5, ch 156 to ch 160, etc. in user channels; or all chan-
change capability (scan function). There are 3 types                nels in the group of ITU channels.
of scan functions available to suit your needs.
                                                                    Programmed scan (optional) changes frequencies
Channel scan                                                        within the frequency range between user channels
                                                                    159 and 160.

             ch 2              ch 3                                 Scan selection is available in set mode. See p. 14 for
                                                                    scan selection.
                                                     scan is
                                                     cancelled
  ch 1                                        ch 4
                                                     when
                                                     transmitting
                                                                    SCAN OPERATION
                                                                     Select your desired channel group with the
                      ch 5
                                                                      [GROUP] and [CHANNEL] selector.
                                                                       Or use the keypad and [CE] key for direct selection.
                                                                       This operation is not necessary for programmed scan.
Channel resume scan                                                  Push [SQL] to turn OFF the squelch function if pro-
                                                                      grammed scan is selected.
            ch 2              ch 3                                   Push [FUNC] then [SQL] to start the scan.
                                                                     To stop the scan, repeat step  again.
                                                     scan pauses       [CHANNEL] rotation and some other switches also stop
                                                     for 30 sec.,
 ch 1                                        ch 4                       the scan.
                                                     then resumes
                                                     after
                                                     transmitting
                     ch 5



Programmed scan (optional)
                                      Scans the frequency range
                                      between the programmed
ch 159                       ch 160   frqeuencies on channels
                                      159 and 160.
                                      Scans fast when squelch is
                                      closed and slowly when
                                      squelch is open.


                                                                                                                               7
    3   SELECTING A CHANNEL/FREQUENCY




    I Selecting a frequency
    The transceiver has 0.5 to 30.0 MHz general coverage            NOTE: The selected frequency is used for tempo-
    receive capability with 100 Hz resolution. The receive            rary receiving (transmitting is not available). This
    frequency can be changed instantly, independent of                frequency is cleared once the channel is changed.
    the transmit frequency.                                           If you want to program a frequency, refer to p. 12.



     D Using the channel selector
      Select a channel which is programmed near the                             ALM
                                                                                RX
      frequency you want to receive.                                            TX
                                                                                            DUP
                                                                                                          AGC

      Push the [CE] key to select frequency selection                           DSC                         F

      mode.                                                                        No "" indicator shows that the channel will
                                                                    CE
         "s" appears on the display.                                              be changed when rotating [CHANNEL].
      Rotate the [CHANNEL] selector to change the fre-
        quency.
      To return to the previous frequency, push [CE].                           ALM
                                                                                RX
         "s" disappears and the previous frequency or channel                              DUP
                                                                                                          AGC
                                                                                TX
          name appears.                                                         DSC                         F


                                                                                   "" and frequency show that the frequency
                                                                                   will be changed.




     D Using the keypad                                            [EXAMPLE]: Setting 12.3450 MHz
      CAUTION: A frequency can be entered into a
         user channel or ITU simplex channel by pushing            Select non frqeuency           ALM
                                                                                                  RX
         the [RX] key. However, when pushing and hold-             programmed channel.                                   AGC
                                                                                                  TX
         ing the [RX] key after entering a frequency, the                                         DSC                      F

         previously programmed contents are erased and                                            ALM
                                                                                       CE
         cannot be retrieved. Therefore, keypad entry                                             RX
                                                                                                                         AGC
         should be used only on spare channels.                                                   TX
                                                                                                  DSC                      F

      Select the memory channel to be used for general                                 1          ALM
        coverage use.                                                                             RX
                                                                                                                         AGC
                                                                                                  TX
        ALM                                                                                       DSC                      F
        RX
                                  AGC                                          2       3
        TX                                                                                        ALM
        DSC                             F                                                         RX
                                                                                                                         AGC
                                                                                   4        5     TX
        No frqeuency programmed channel for general                                               DSC                      F
        coverage use.
                                                                                       0          ALM
        (mode and channel name do not appear)                                                     RX
                                                                                                                         AGC
      Push [CE] to select frequency selection mode.                                               TX

      Enter the desired frequency with 5 or 6 digits.                                             DSC                      F


      Push [RX] to input the frequency.                                                RX         ALM
                                                                                                  RX
         Do not hold [RX] for more than 0.5 sec., otherwise the                                                         AGC
                                                                                                  TX
          frequency will be programmed into the channel.                       (momentarily)      DSC                      F


                                                                   After temporarily receiving.
                                                                                       CE         ALM
                                                                                                  RX
                                                                                                                         AGC
                                                                                                  TX
                                                                                                  DSC                      F




8
                                                    RECEIVE AND TRANSMIT                                                4
I Basic voice receive and transmit
 Check the following in advance:                                  Adjust [VOLUME] to the desired audio level when
   Microphone is connected.                                        receiving a signal.
   [SPEAKER] switch is turned off.                                Push [MODE] to select the desired operating mode,
   [SQL] switch is turned off.                                     if the received signal is in a different mode.
   [CLARITY] control is set to the center position.               Push [TUNE] to tune the antenna tuner, if con-
                                                                   nected.
                                                                    This operation is not necessary when "automatic tuning"
                                                                     is selected in set mode (p. 13).
                                                                  To transmit on the channel, push and hold the PTT
                                                                   switch on the microphone.
                                                                    "TUNE" flashes for 1 to 2 sec. for the first transmission
                                                                     on a channel when an antenna tuner is connected.
     microphone                  [SQL]                            After the flashing stops, speak into the microphone
     connector
                                                                   at your normal voice level.
                                                                    The RF meter shows the output power according to your
               [SPEAKER]              [CLARITY]                      voice level.
                                                                  Release the PTT switch to return to receive.
 Select the desired channel to be received with the
  [GROUP] and [CHANNEL] selectors.
   When receiving a signal, the S-meter shows the signal
    strength.



I Functions for transmit
 D Transmit frequency check
 When "DUP" appears on the display such as for a                 Push and hold [TX FREQ] to monitor the transmit fre-
 ship-to-shore channel, the transmit frequency differs           quency.
 from the receive frequency.
                                                                 TX FREQ

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


                                                                  The display shows the transmit frequency.


 D Transmit power selection
 The transceiver has 3 selectable output powers.*                 Push [FUNC] then [TX] to call up the following dis-
 High power allows longer distance communications                  play.
 and low power reduces power consumption.                           ALM
                                                                    RX
 *Only 2 selectable output powers are available with some                                     AGC
                                                                    TX
  versions. In this case, level 1 stands for 60 W (the same as      DSC                          F
  level 2).
  NOTE: Low power setting affects all channels ex-               Rotate the [CHANNEL] selector to select high or
    cept the 2182 kHz emergency channel.                           low output power.
                                                                   3 : high power (150 W PEP)
  NOTE: Although power selection appears possi-                   2 : middle power (60 W PEP)
    ble with GMDSS versions, only high power is
                                                                   1 : low power (20 W PEP)
    available.
                                                                  Push [FUNC] or [CE] to return to the previous dis-
                                                                   play.




                                                                                                                                 9
     4   RECEIVE AND TRANSMIT




     I Functions for receive
     D Squelch function
     The squelch function detects signals with voice com-      Push [SQL] to toggle the function on and off.
     ponents and squelches (mutes) unwanted signals            ALM
     such as unmodulated beat signals. This provides           RX
                                                                         DUP
                                                                                            AGC
     quiet standby.                                            TX
                                                               DSC
                                                                                      SQL
                                                                                              F


     When you need to receive weak signals, the squelch         "SQL" appears when the squelch function is turned on.
     should be turned off.


     D Noise blanker
     The noise blanker function reduces pulse type noise       Push [NB] to toggle the function on and off.
     such as that coming from engine ignitions.                ALM
                                                               RX
                                                                         DUP
                                                                                            AGC
     The noise blanker may distort reception of strong sig-    TX                            NB
                                                               DSC                            F
     nals. In such cases, the noise blanker should be
     turned off.                                                "NB" appears when the noise blanker function is turned
                                                                 on.


     D AGC off function
     The receiver gain is automatically adjusted according     Push [AGC] to toggle the function on and off.
     to received signal strength with the AGC (Automatic       ALM
     Gain Control) function to prevent distortion from         RX
                                                                                            AGC
                                                                                            AG
     strong signals and to obtain a constant output level.     TX
                                                               DSC                            F

     When receiving weak signals with adjacent strong           "" appears when the AGC function is deactivated.
     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          Push [FUNC] then [RX] to call up the following dis-
     setting. This may help to remove undesired weak sig-        play.
     nals while monitoring strong signals.                     ALM
                                                               RX
                                                                                            AGC
     Usually, the AGC function reduces the RF gain ac-         TX
                                                               DSC                            F
     cording to the receive signal strength and these weak
     signals are remove. However, during no signal recep-
     tion, these weak signals may not be heard.                 Rotate the [CHANNEL] selector to set the desired
                                                                 minimum cutting level.
     In such cases, the RF gain may be useful for setting a       "0" to "9" are available.
     minimum level at which to hear signals.                      S-meter shows the minimum permitted level.
                                                                Push [FUNC] or [CE] to exit the RF gain display.



     D Clarity control
     Voice signals received from other stations may be dif-    Adjust [CLARITY] to improve the audio signal.
     ficult to receive. This may sometimes happen if a sta-
     tion is transmitting slightly off frequency. In such
     cases, compensate the receive frequency only, using
     the [CLARITY] control.



                                                                                                  [CLARITY]


10
                                                                                               RECEIVE AND TRANSMIT                         4


I CW operation
The transceiver has the following CW keying features         CW key connection
selectable in set mode as described on page 15.
 Full break-in (receiving is possible while transmitting)
 Delay keying (automatic transmission with keying)
 Off (manual transmission is necessary before keying)

 Connect a CW keyer or an external electronic
  keyer to the ACC(1) socket as shown at right.
 Select the desired channel to operate CW mode.
 When the selected channel is not in A1A mode,                                                                                  CW key
 push [MODE] one or more times to select "A1A."                                 pin 2
 Operate the CW keyer to transmit a CW signal.                    4 2 5
                                                                 1     3
 NOTE: CW mode is not available in some ver-                     6
                                                                    8
                                                                      7         pin 1
   sions and CW narrow can be selected in set mode
   (p. 14) when an optional filter is installed (already
                                                               ACC(1) socket
   built-in to the GMDSS versions).



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

 Connect an FSK terminal unit as shown at right.
 Select the desired channel.
   FSK ITU channel group, ch 4001 to ch 25040, are avail-
    able depending on version.
 Push [MODE] one or more times to select the type                  pin 4
                                                                                                          FSK keying
 of emission, "FSK" or "J2B."
 Operate the FSK terminal unit.                                                pins 2, 5
                                                                                                          AF input
                                                                  4 2 5
 NOTE:                                                          1     3                                  Tx/Rx control
    FSK shift frequency and FSK polarity can be                   6
                                                                    8
                                                                      7
                                                                                pin 3
    adjusted in set mode (p. 14).
    Some transceivers my operate 1.7 kHz higher                                                                   Ground
                                                               ACC(1) socket
    than the IC-M710RT's J2B mode even when                                                             FSK terminal unit
    the same displayed frequencies are in use.



I Cross channel operation*
Cross channel operation is available with some ver-          Cross channel operation example
sions to operate different channels for receive and
transmit.                                                            ALM
                                                                     RX
                                                                                 DUP
                                                                                                                    AGC
 Select the desired channel for receive.                             TX
                                                                     DSC                                                    F
                                                                           0     1         2    3         4         A
   ITU simplex channels cannot be used.
                                                                     While receiving
 Push [TX], then select the desired channel for
  transmit.                                                                          ALM
   "$" flashes after pushing [TX].                                                  RX
                                                                                                    DUP
                                                                                                                                    AGC
 Push [TX] again to stop the blinking.                                               TX
                                                                                     DSC                                                F
 Operate the transceiver normally.                                                         0        1         2         3       4   A



                                                                                 While transmitting
 Change the channel to clear the cross channel set-
  ting.
*This function is available for Europe versions only.
                                                                                                                                                11
     5              USER CHANNEL PROGRAMMING


     I Programming a frequency
     The IC-M710RT has up to 160 user-programmable               NOTE: ITU simplex channels can be programmed
     channels each with channel name capability of up to 7          as well as user channels. However, transmit fre-
     alphanumeric characters.                                       quencies cannot be programmed as it is not neces-
                                                                    sary.


      D Receive frequency
       Select the desired channel to be programmed.             Push [CE]                ALM
                                                                                         RX
         Channels 1 to 160 (maximum) are programmable.                                          DUP
                                                                                                                  AGC
       Push [CE] to select frequency selection mode.                                     TX
                                                                                         DSC                         F
         "s" and frequency appear on the display.
       Enter the desired frequency via the keypad--5 or                                 Frequency and "" appear.
        6 digits.                                               Set frequency            ALM
                                                                                         RX
                                                                                                 DUP
         Or rotate the [CHANNEL] selector to change the fre-                            TX
                                                                                                                  AGC

          quency.                                                                        DSC                         F

       To change the operating mode (type of emission),                                 Use keypad or channel selector.
       push [MODE] one or more times.
                                                                Push and hold [RX]       ALM
       Push and hold [RX] for 1 sec. to program the user                                 RX
                                                                                                 DUP
                                                                                                                  AGC
       channel.                                                                          TX
                                                                                         DSC                         F

                                                                                        Programming is completed.


      D Transmit frequency
        (Not applicable for General versions)                   Push [TX]                ALM
                                                                                         RX
       Select the desired user channel to be programmed.
                                                                                                 DUP
                                                                                                                  AGC
                                                                                         TX
       Push [TX].                                                                        DSC                        F

        "$" flashes.                                                                   "$" flashes.
       Push [CE] to select frequency selection mode.            Push [CE]                ALM
         "s" and frequency appear on the display.                                       RX
                                                                                                 DUP
                                                                                                                  AGC
       Enter the desired frequency via the keypad with 5                                 TX
                                                                                         DSC                        F
        or 6 digits.
         The [CHANNEL] selector cannot be used.
       Push and hold [TX] for 1 sec. to program.                Push and hold [TX]       ALM
                                                                                         RX
       Push [TX] to stop "$" from flashing.                     after entering a
                                                                                         TX
                                                                                                 DUP
                                                                                                                  AGC
                                                                frqeuency                DSC                        F




      D Channel names
       Select the desired user channel to be programmed.        Push [FUNC]              ALM

       Push [CH/FREQ] to select channel indication.             then [CE]
                                                                                         RX
                                                                                                 DUP
                                                                                                                  AGC
       Push [FUNC] then [CE].                                                            TX
                                                                                         DSC                        F
         The channel name (alphanumeric) readout flashes.
                                                                                        "$" flashes.
       Rotate the [GROUP] selector for cursor position
        and the [CHANNEL] selector for name content.            Rotate [GROUP]           ALM
                                                                                         RX
         To return to the previous message, push [CE].         and [CHANNEL]                    DUP
                                                                                                                  AGC
                                                                                         TX
       Push and hold [RX] to program the name.                  to select cursor and     DSC                        F
                                                                character
         Flashing stops.
                                                                Push [RX]                ALM
                                                                                         RX
                                                                                                 DUP
                                                                                                                  AGC
                                                                                         TX
                                                                                         DSC                        F




12
                                                                      SET MODE                            6
I Set mode operation
Set mode operation is used for programming infre-
quently changed values or conditions of functions.

 NOTE: Some of the set mode items described in
  this section are not available on some transceiver
  versions.

 Push [POWER] to turn power off, if necessary.                    [POWER]            [FUNC] [1]
 While pushing [FUNC] + [1], push [POWER] to turn
  power on and enter set mode.
 Rotate the [GROUP] selector to select the desired              ALM
                                                                RX
                                                                                              Condition
 item.                                                                               AGC
                                                                TX                            Item
 Rotate the [CHANNEL] selector to set the values or             DSC                      F

 conditions for the selected item.
 Turn power off and on again to exit set mode.

I Set mode contents
 (1) FSK ITU channels
 FSK ITU channels appear as a group between the                                   FSK channels don't appear
 ITU 25 MHz band and user channels. This FSK chan-                                (no SITOR operation).
 nel group can be hidden for voice communication                                  (default)
 only.
                                                                                  FSK channels appear (for
                                                                                  SITOR operation).




 (2) Connected antenna tuner
 The transceiver has several tuner control systems for                            AT-130
 use with an optional Icom antenna tuner. Select the                              (default)
 condition depending on the connected antenna tuner.

  NOTE: Internal switch selection may be required                                AT-120
    when using a non-Icom tuner (p. 23).

                                                                                  AH-3




 (3) Automatic tuning condition
 When the optional AT-130 or AT-130E automatic an-        ALM                     Tuning starts when pushing
                                                          RX
                                                                            AGC   [PTT] on a new frqeuency.
 tenna tuner is connected, tuning can be started auto-    TX
 matically without the [TUNE] switch, for instant         DSC                 F

 operation.
                                                          ALM                     Tuning starts only when
                                                          RX
 If manual tuning is required, this automatic operation                     AGC   [TUNE] is pushed.
                                                          TX
 can be deactivated.                                      DSC                 F
                                                                                  (default)




                                                                                                               13
     6   SET MODE




     (4) Scan type selection (scan-type only)
     This item selects one of the following scan functions.   ALM         Channel scan
                                                              RX          Scan is canceled when
                                                                    AGC
     Channel scan and channel resume scan search 5            TX          transmitting.
                                                              DSC     F   (default)
     channels around a user selected channel or search
     all ITU channels in the band when an ITU channel is      ALM         Channel resume scan
                                                              RX          Scan pauses when squelch
     selected.                                                TX
                                                                    AGC
                                                                          opens, then resumes after
                                                              DSC     F   10 sec.
     Programmed scan (optional) searches signals within                   Channel resume scan
                                                              ALM
     the frequency range and activates slowly while           RX          Scan operates over the fre-
                                                                    AGC
     squelch is open and fast while squelch is closed.        TX          quency range.
                                                              DSC     F   (optional)



     (5) Scan speed
                                                              ALM         Fastest scan speed
     This item adjusts the scan speed (rate at which chan-    RX
                                                                    AGC
     nels are searched). The scan speed can be set from       TX
                                                              DSC     F
     1 to 10 with "1" being the fastest and "10" being the
     slowest.                                                             (default: 4)

                                                              ALM         Slowest scan speed
                                                              RX
                                                                    AGC
                                                              TX
                                                              DSC     F




     (6) Channel name and frequency
                                                                          Channel number
     The lower half of the display can be set to display a                and channel name
     programmable channel name or a receive frequency                     --alphanumeric
     according to operator needs.                                         (default)

                                                                          Channel number
                                                                          and frequency




     (7) CW/FSK narrow filter
     This item selects the passband width for A1A (CW),       ALM         Passband:
     FSK or J2B mode.                                         RX          2.3 kHz/6 dB
                                                                    AGC
                                                              TX          (default)
      NOTE: When "on" is selected without optional fil-
                                                              DSC     F


         ter installation, the Marine and General versions                Passband:
                                                              ALM
         do not function in these modes. The GMDSS ver-       RX          500 Hz/6 dB (Gene/Marine)
                                                                    AGC
         sions can use "on" as standard.                      TX          350 Hz/6 dB (GMDSS)
                                                              DSC     F




     (8) FSK shift frequency
     Several shift frequencies (the difference between the                Shift frequency:
     mark and space frequency) are used for FSK opera-                    170 Hz
     tion. This item allows you to select a shift frequency               (default)
     for almost any FSK system.
                                                                          Shift frequency:
                                                                          425 Hz


                                                                          Shift frequency:
                                                                          850 Hz



14
                                                                                   SET MODE     6


(9) FSK polarity
Normal and reverse polarities are available for FSK                  FSK normal
                                                                     (default)
operation. This item allows you to select one of these
polarities.

"FSK-REV off" (normal):                                              FSK reverse
      key open (mark); key close (space)

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


(10) CW break-in
                                                                     Full break-in
The CW break-in function (in A1A mode) toggles                       Automatic keying without
transmit and receive with CW keying. Full break-in al-               delay time (default)
lows you to receive signals between transmitted key-
ing pulses during CW transmission. Semi break-in                     Semi break-in
allows you to mute receiving until keying stops with                 Automatic keying with delay
some delay time.                                                     time

                                                                     OFF
                                                                     Manual transmission
                                                                     necessary for keying




(11) Microphone keys
                                                         ALM         Microphone keys
This item activates/deactivates the keys on the HM-      RX          activated.
120 HAND MICROPHONE ("P", "Y" and "Z"). Refer to         TX
                                                               AGC
                                                                     (default)
p. 4 to program the "P" key.                             DSC     F



                                                         ALM         Microphone keys
                                                         RX          deactivated.
                                                               AGC
                                                         TX
                                                         DSC     F




(12) Remote control busy timer
This sets the time for which operation of one remote     ALM         Busy timer: 5 sec.
                                                         RX          (default)
controller is inhibited while operating the other. The   TX
                                                               AGC

timer can be set from 0 to 180 sec.                      DSC     F




(13) ID number setting for remote control
When connecting an external controller such as a
personal computer, 2-digit ID codes are required to      ALM         NMEA ID: 03
                                                         RX          (default)
access the transceiver. The IC-M701RT adopts             TX
                                                               AGC

NMEA0183 format and uses a "proprietary sentence"        DSC     F

for remote control. ID 01 to 99 are available.


(14) Remote control input terminal                                   [REMOTE] socket
                                                         ALM
Remote control signals can be input via the [RS-         RX          (default)
                                                               AGC
232C] socket or [CLONE] jack.                            TX
                                                         DSC     F



                                                         ALM         [CLONE] jack
                                                         RX
                                                               AGC
                                                         TX
                                                         DSC     F



                                                                                                    15
     7               CONNECTIONS AND INSTALLATION


     I Supplied accessories
                                                                               RC-21 (REMOTE CONTROLLER) ACCESSORIES
      DC power cable (OPC-568) . . . . . . . . . . . . . . . . . 1              Microphone (HM-120*) . . . . . . . . . . . . . . . . . . . . . 1
      Mounting bracket . . . . . . . . . . . . . . . . . . . . . . . . . . 1    Microphone hanger* . . . . . . . . . . . . . . . . . . . . . . . 1
      Bracket knobs (8820000170) . . . . . . . . . . . . . . . . 4              DC power cable (OPC-775) . . . . . . . . . . . . . . . . . 1
     CONNECTORS                                                                 Mounting bracket . . . . . . . . . . . . . . . . . . . . . . . . . . 1
      DIN connector (8-pin for ACC1) . . . . . . . . . . . . . . 1              Bracket knobs . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
      DIN connector (7-pin for ACC2) . . . . . . . . . . . . . . 1             NUTS AND BOLTS
      Tuner connector (56100000150) . . . . . . . . . . . . . . 1               Self-tapping screws*
      Pins for tuner connector (6510019030) . . . . . . . . . 4                      (3.5  30 for mic. hanger) . . . . . . . . . . . . . . . . 2
      DIN connector cover (GMDSS only--attach to the                            Flat washers (M5) . . . . . . . . . . . . . . . . . . . . . . . . . 2
                             ACC sockets) . . . . . . . . . . . . 1             Nuts (M6; use 2 pcs. for each bolt) . . . . . . . . . . . 10
     NUTS AND BOLTS                                                             Spring washers (M6) . . . . . . . . . . . . . . . . . . . . . . . 5
      Allen bolt (M6  50) . . . . . . . . . . . . . . . . . . . . . . . . 4    Allen bolt (M6  50) . . . . . . . . . . . . . . . . . . . . . . . . 5
      Self-tapping screws (M6  30) . . . . . . . . . . . . . . . . 4           Self-tapping screws . . . . . . . . . . . . . . . . . . . . . . . . 5
      Nuts (M6; use 2 pcs. for each bolt) . . . . . . . . . . . . 8             Flat washers (M6) . . . . . . . . . . . . . . . . . . . . . . . . 10
      Flat washers (M6) . . . . . . . . . . . . . . . . . . . . . . . . . 8     Ground lug (M5) . . . . . . . . . . . . . . . . . . . . . . . . . . 1
      Spring washers (M6) . . . . . . . . . . . . . . . . . . . . . . . 4      FUSES
      Self-tapping screws                                                       FGB 30 A (rear panel) . . . . . . . . . . . . . . . . . . . . . . 2
           (3.5  30 for mic. hanger) . . . . . . . . . . . . . . . . 2         FGB 5 A (internal) . . . . . . . . . . . . . . . . . . . . . . . . . 2
     FUSES                                                                      *Depends on version.
      FGB 30 A (rear panel) . . . . . . . . . . . . . . . . . . . . . . 2
      FGB 5 A (internal) . . . . . . . . . . . . . . . . . . . . . . . . . 2




     I Attaching 1 remote controller




16
                                                                                 CONNECTIONS AND INSTALLATION                 7


I Attaching 2 remote controllers


                                              Controller




                                                       Controller




                            DC 13.6 V
     DC 13.6 V

                                                                                                             IC-M710RT
                                                                                                             main unit



                          DC 13.6 V




D Set ID number                                                     D Intercom operation
The ID numbers for each remote controller must be set               The intercom function allows you to communicate be-
properly for the intercom function to operate (see                  tween two remote controllers.
right).
                                                                     Push [FUNC] and then push [SPEAKER] to turn the
 While pushing [FUNC] + [], push [POWER].                            intercom function ON.
   Channels 1 to 160 (maximum) are programmable.                      "INCOM" blinks and beeps are emitted; the blinking con-
 Rotate the channel selector to select the desired                      tinues until the intercom function is cancelled.
  unit ID number if desired.                                           Push [FUNC] to cancel the intercom function.
   Default ID's are No. 1 for the supplied remote controller        Push and hold the [PTT] switch on the microphone
    and No. 2 for an optional remote controller.                      and speak into the microphone at a normal voice
 Push [POWER] turn the power OFF.                                     level.
                                                                       The display stops blinking and the ID number of the re-
                                                                        mote controller being used to transmit appears on both
                                                                        remote controller displays.
                                                                       When no ID appears, operators at either remote con-
                                                                        troller are free to transmit.
                                                                       When neither remote controller is used to transmit for 30
                                                                        sec. the intercom function is automatically cancelled.
                                                                     Push [FUNC] to end intercom operation.
                                                                                                                                    17
     7   CONNECTIONS AND INSTALLATION




     I Attaching 2 remote controllers and a PC


                                               Controller




                                                        Controller




                               13.6 V DC




                                                                                                       IC-M710RT
                                                                                                       main unit




                DC 13.6 V

                                Personal computer




     I Notes for remote control
      When     more than 1 controller (incl. PC) is con-             Volume adjustment is independently controlled by
         nected, the controller (or PC) being operated at               each remote controller (PC).
         any given time has priority.
                                                                      The optional RS-M710RT software allows you to
      When       more than 1 controller (incl. PC) is con-             program memory channels not available through
         nected, the controller (or PC) not being operated is           regular IC-M710RT operation. Refer to the RS-
         inhibited for a specified time after another con-              M710RT online help for details.
         troller (or PC) is operated. This time can be pro-
         grammed by your dealer. The default inhibit time is          CAUTION: The rear of any connected remote
         5 sec.                                                        controller must be properly grounded. We suggest
                                                                       using a wide copper ribbon. (p. 22)
      When     more than 1 controller (incl. PC) is con-
         nected, operating one controller automatically up-
         dates settings on the other controller (PC).
18
                                                                CONNECTIONS AND INSTALLATION              7


I Connections on rear panel                                     NOTE: To meet European GMDSS reg-
                                                                  ulations, the following must be con-
                                                                  nected to the IC-M710RTGMDSS:
                                                e         o
                                                                      GM-110 DSC TERMINAL UNIT
                                                                      PS-65 (or 66) DC-DC CONVERTER UNIT
                                                                      AT-130E AUTOMATIC ANTENNA TUNER
                                                                         i
                                        q

                                                                  u

                                                r   t y
                                  w




          Optional AT-130

                                                                                           12 V battery

q ANTENNA CONNECTOR (p. 23)                         u TUNER RECEPTACLE
  Connects a 50  HF band antenna with a 50            Connects a control cable to an optional AT-130 or
  matched coaxial cable and a PL-259 plug.            AT-130E ANTENNA TUNER. A female connector is
                                                      supplied for connection.
w GROUND TERMINAL
  IMPORTANT! Connects a ship's (or vehicle's)       i DC POWER RECEPTACLE
  ground. See p. 22 for details.                      Connects to a regulated 1216 V DC power source
                                                      such as a 12 V battery or DC power supply using
e ACC(1) and ACC(2) SOCKETS                           the supplied DC power cable.
  See p. 20 for details.
                                                     CAUTION: DO NOT connect to a 24 V battery.
r CLONE JACK                                           This will damage the transceiver.
  For Dealer use only.
                                                    o FUSE HOLDERS
t DSC or REMOTE SOCKETS (p. 21)                       Hold two 30 A fuses for +ve and ve terminals. Re-
   DSC socket for GMDSS versions--connects an         place both fuses when one fuse is blown.
    optional GM-110DSC DSC TERMINAL UNIT.
   REMOTE socket for Marine and General ver-
    sions.

y MOD/AF SOCKET (GMDSS versions only)
  Connects an external terminal unit.




                                                                                                              19
     7   CONNECTIONS AND INSTALLATION




     I Connector information
             ACC(1)*                     PIN PIN NAME            DESCRIPTION                           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.                       Ground level: 0.5 to 0.8 V
                                         3    SEND      Goes to ground when transmitting.       Input current: Less than 20 mA
                                                        When grounded, transmit.                Connected in parallel with ACC(2) pin 3.
                                                        Modulator input.                        Input impedance: 10 k
              2                          4    MOD
           4    5                                       Usable when pin 3 is grounded.          Input level: Approx. 100 mV rms
          1   8 3                                       AF detector output.                     Output impedance: 4.7 k
                                         5    AF
            6   7                                       Fixed, regardless of [AF] position.     Output level: 100300 mV rms
                                         6    SCAN      Starts scan when grounded.              Scan operation: Less than 0.6 V
                                                                                                Output current: Max. 1 A
                                         7    13.6 V    13.6 V output when power is ON.
                                                                                                Connected in parallel with ACC(2) pin 7.
                                                                                                Control voltage: 3 to 0 V
                                         8    ALC       ALC voltage                             Input impedance: More than 10 k
                                                                                                Connected in parallel with ACC(2) pin 5.
     *ACC(1): Marine and general versions only.
      ACC(2)*/ACC* PIN PIN NAME                                  DESCRIPTION                           SPECIFICATIONS
                                                                                                Output voltage: 8 V 0.3 V
                                         1    8V        Regulated 8 V output.
                                                                                                Output current: Less than 10 mA
                                         2    GND       Same as ACC(1) pin 2.
                     2                   3    SEND      Same as ACC(1) pin 3.
                 4           5
             1                   3
                                         4    NC        No connection.
             6               7
                                         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.
     * ACC(2): Marine and general version; ACC: GMDSS version.
      MICROPHONE PIN PIN NAME                                    DESCRIPTION                           SPECIFICATIONS
                                                        Audio input from the microphone
                                         1    MIC+                                              Input impedance: 600 
                                                        element.
                                         2    NC        No connection.
                                                        AF output controlled with [VOLUME].
                                         3    AF1
             2           1                              Connected to pin 4 in the microphone.
                                     7
         3                                              AF input.
                                         4    AF2
                     8               6                  Connected to pin 3 in the microphone.
             4               5
                                         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 PIN NAME            DESCRIPTION                           SPECIFICATIONS
                                         1    KEY       Key signal input.                       0.5 to 0.8 V during tuning.
                                         2    START     Start signal output.                    Pulled up 8 V, 0 V (100 msec) as a start signal.
                                         3    13.6V     13.6 V output.                          Maximum current: 2 A
                                              E         Negative terminal.                      USA version (See below for Europe version.)
                                         4
                                              ANTC      Antenna current input.                  Input level: Approx. 2 V rms



20
                                                                                  CONNECTIONS AND INSTALLATION          7


    DSC                     PIN PIN NAME             DESCRIPTION                         SPECIFICATIONS
                                             Modulation input from a DSC          Input impedance: 600 
                              1       DMD+
                                             terminal unit.                       Input level: Approx. 0.75 V rms
                              2       DMD   Coaxial ground for DMD+.
                                             AF detector output for a DSC         Input impedance: 600 
                              3       DAF+
        6       9                            terminal unit.                       Input level: Approx. 0.252.5 V rms
                              4       DAF   Coaxial ground for DAF+.
                              5       NMI+   NMEA data output.                    NMEA standard format/level.
    1               5
                              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.


MOD/AF                      PIN PIN NAME             DESCRIPTION                         SPECIFICATIONS
                                             Modulation input for an external     Input impedance: 600 
                              1       NMD+
                                             terminal unit.                       Input level: Approx. 100 mV rms
                              2       NMD   Coaxial ground for NMD+.
                                             AF detector output for an external   Input impedance: 600 
                              3       NAF+
                                             terminal unit.                       Input level: Approx. 0.252.5 V rms
        6       9
                              4       NAF   Coaxial ground for NAF+.
                                                                                  Ground level: 0.5 to 0.8 V
                              5       NSEN   Transmits when grounded.
                                                                                  Input level: Less than 20 mA
    1               5
                              6       NC    No connection.
                              7       NC     No connection.
                              8       NC    No connection.
                              9       GND    Ground for digital equipment.


    REMOTE                  PIN PIN NAME             DESCRIPTION                         SPECIFICATIONS
                                             Modulation input from an external    Input impedance: 600 
                              1       MOD+
                                             terminal unit.                       Input level: Approx. 100 mV rms
                              2       MOD   Coaxial ground for MOD+.
                                             AF detector output for an external   Input impedance: 600 
                              3       AF+
        6       9                            terminal unit.                       Input level: Approx. 0.252.5 V rms
                              4       AF    Coaxial ground for AF+.
                              5       NMI+   NMEA data input.                     NMEA standard format/level.
    1               5
                              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   2   3
                            1, 4, 7     +    DC input (positive).                 Max. power consumption: 30 A

4                       6

                            2, 5, 8     _    DC input (negative).
        7   8   9




                                                                                                                            21
     7   CONNECTIONS AND INSTALLATION




     I Ground connection
     The transceiver, remote controller RC-21 and an-          Good ground points
     tenna tuner MUST have an adequate ground connec-           Ship's ground terminal
     tion. Otherwise, the overall efficiency of the             External ground plate
     transceiver and antenna tuner installation will be re-     External copper screen
     duced. Electrolysis, electrical shocks and interference   Acceptable ground points
     from other equipment could also occur.                     Stainless steel tuna tower
                                                                Stainless steel stanchion
     For best results, use the heaviest gauge wire or strap
                                                                Through mast
     available and make the connection as short as possi-
                                                                Through hull
     ble. Ground the transceiver, RC-21 and antenna tuner
                                                                Metal water tank
     to one ground point, otherwise voltage differences be-
     tween 2 ground points may cause electrolysis.             Undesirable ground points
                                                               (these points may cause electrolysis)
     u CAUTION: The IC-M710RT has either a negative             Engine block
       ground or floating ground depending on version.          Keel bolt
       NEVER connect the negative ground type to a             Unusable ground points
       "plus-grounding ship," otherwise the transceiver will   (these connections may cause an explosion or elec-
       not function.                                           trical shock)
                                                                Gas or electrical pipe
     Ground system example                                      Fuel tank or oil-catch pan



                RC-21                                             Transceiver       Optional AT-130/E




                                                       yyyyyy
                                                       ;;;;;;
                                                       ;;;;;;
                                                       yyyyyy
                                                       ;;;;;;
                                                       yyyyyy
                   Copper pipe         Metal object    ;;;;;;
                                                       yyyyyy
                                                        Copper screen



     I Power source
     The transceiver requires regulated DC power of 13.6       DC power cable connection
     V and at least 30 A. There are 3 ways to supply
                                                                                         NOTE: Use terminals
     power:
                                                                                           for the cable connection.
      Direct connection to a 12 V battery in your ship
       through the supplied DC power cable.                                                                 Crimp
      Use the PS-60 DC POWER SUPPLY to connect to an                                    red
       AC outlet.                                                    black
      Use the PS-66 DC-DC CONVERTER to connect to a
       1932 V DC power source.

     u CAUTION: The supplied DC power cable MUST be                                                       Solder
                                                                        12 V
       used to provide power to the transceiver. AVOID ex-
                                                                        battery
       ceeding the 3 m (10 ft) length of the DC power
                                                                                  Supplied
       cable. If it is necessary to make a run of over 3 m,                       DC power cable
       use #6 or similar weight cable instead of the sup-
       plied DC power cable for a maximum run of 6 m (20
       ft).




22
                                                                                        CONNECTIONS AND INSTALLATION          7


I Antenna
Most stations operate with a whip or long wire (insu-                   With a 50  matched antenna all marine bands can-
lated backstay) antenna. However, these antennas                        not be used. The following antenna matcher or an-
cannot be connected directly to the transceiver since                   tenna tuner may be helpful for antenna installation.
their impedance may not be matched with the trans-
ceiver antenna connector.

 D MN-100/MN-100L ANTENNA MATCHERS




                                   Antenna wire
                                                          MN-100/MN-100L




 D AT-130/AT-130E AUTOMATIC ANTENNA TUNER
                                                                                                     To antenna element
                                                                          AT-130/E
                 IC-M710RT


                                                                                  [E]
                                                                               [13.6]

                                                                             [START]
                                                                                [KEY]



               KEY       START
               13.6      E



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



 D Non-Icom tuner
 Some non-Icom tuners may be used with the IC-M.
 Please consult your dealer or marina if you wish to
 connect one. The following internal settings may be
 required for connection.

    Supplies 8 V when push-                  Grounded when pushing [TUNE].
                 ing [TUNE].                 (used for AT-130/E--default)
                               S9
                               (Start port level)


    Accepts "LOW" as an an-                  Accepts "HIGH" as an answer back signal.
           swer back signal.                 (used for AT-130/E--default)
                               S11
                               (Key port input)


                                                                                                                                  23
     7   CONNECTIONS AND INSTALLATION




     I Mounting                                                         u CAUTION: KEEP the transceiver and microphone at
                                                                          least 1 meter away from your vessel's magnetic nav-
     D Mounting location                                                  igation compass.
     Select a location that provides easy access to the front
     panel for navigation safety, has good ventilation and is           Check the installation angle; the display may not be
     not subject to sea spray. The controller should be at 90           easy to read at some angles.
     degrees to your line of sight when operating it.




      D Mounting the controller/main body




       Spring washer

                                                                      Spring washer
       Flat
       washers
                                                                      Flat
                                                                      washers
       Nuts
       (Use two nuts to
       prevent loosening)                                             Nuts
                                                                      (Use two nuts to
                                                                      prevent loosening)




      D Transceiver dimensions




                                                         116 mm                                                    116 mm
                                                         (49/16 in)                                                (49/16 in)



           292 mm (111/2 in)
                                                     66 mm
                                                    (219/32 in)                                             317 mm
                                                                        292 mm                             (1215/16 in)
                                                                        (111/2 in)


24
                                                                           CONNECTIONS AND INSTALLATION                 7


I Installing internal options
D Opening the case
Follow the case and cover opening procedures
                                                                                      Front sealing
shown here when you want to install an option or ad-
just a setting for non-Icom tuner control.                                                             Rear sealing

 Remove the 9 screws from the rear panel, then re-
  move the rear frame and rear sealing.
 Remove the transceiver case.
 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 orienta-
                                                                         Rear frame
     tion.
   Screws are tightened securely.



D Installing an optional filter and alarm unit
After opening the case as shown above, install the
desired option to the position as at right. These op-
tions are available (or already built-in) for the following
versions:
  Version                   Marine           General
  FL-100                   optional          optional         Space for UT-95
  CW/FSK NARROW FILTER

  UT-95                     built-in         optional
  2-TONE ALARM UNIT


After installing the 2-tone alarm unit into a General
version, remove the plastic cover on the [ALARM]
switch to use the switch.
                                                                                                Space for the FL-100.
                                                                                                (Plug in here. Right or
                                                                                               left orientation is okay.)



I Fuse replacement
The transceiver has 3 fuses to protect internal cir-
cuitry, 2 fuses for the fuse holder on the rear panel
and 1 for inside. If the transceiver stops functioning,
check the fuses below.


                                 30 A




                                                                  5A




                                                                                                                            25
     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 trans-
     ceiver to an Icom Service Center.

                        PROBLEM                         POSSIBLE CAUSE                                 SOLUTION                      REF.
      POWER




                 Power does not come on   Power cable is improperly connected.           Reconnect the cable securely.          p. 19
                 when [POWER] is pushed.  Blown fuse.                                    Check for cause, then replace the fuse p. 25
                                                                                           with a spare one.
                 No sound comes from the        The [SPEAKER] switch is turned ON.       Turn OFF the [SPEAKER] switch.            p. 2
                 speaker.                       Microphone is not connected.             Connect the microphone to the [MI-        p. 2
                                                                                           CROPHONE] connector.
                                                RF gain is set too deeply and several    Push [FUNC], then [RX] to reset the       p. 10
                                                 segments of the S-meter appear.           RF gain. (RF GAIN 9 applies audio.)
                                                The squelch is closed.                   Push [SQL] switch to turn the squelch     p. 10
                                                                                           OFF.
                 Sensitivity is low and only    Antenna is not properly matched to       Push [TUNE] to tune the connected        p. 13
                 strong signals are audible.     the operating frequency.                  antenna tuner or select "automatic tun-
                                                                                           ing" using set mode when an optional
      RECEIVE




                                                                                           AT-130/E is connected.
                                                RF gain is set too deeply.               Push [FUNC], then [RX] to reset the      p. 10
                                                                                           RF gain.
                                                Wrong tuner condition is selected in     Set to the proper condition for the con- p. 13
                                                 set mode.                                 nected tuner.
                 Received audio is unclear      Wrong type of emission is selected.      Push [MODE] to select the proper op-      p. 9
                 or distorted.                                                             erating mode.
                                                AGC is deactivated while receiving a     Push [AGC] to activate the AGC func-      p. 10
                                                 strong signal.                            tion.
                                                Noise blanker is turned ON when re-      Push [NB] to turn the noise blanker       p. 10
                                                 ceiving a strong signal.                  OFF.
                                                The [CLARITY] control is rotated too     Adjust the [CLARITY] control to receive   p. 10
                                                 far clockwise or counterclockwise.        proper audio output.
                 Your signal does not reach  The transmit power is set low.           Push [FUNC], then [TX] to reset the          p. 9
                 as far away as usual.                                                  transmit power. (RF-PWR 3 is maxi-
                                                                                        mum power.)
                                                Antenna tuner is improperly matched   Push [TUNE] to tune the connected            p. 9 or
                                                 to the operating frequency when man-   antenna tuner or select "automatic tun-      p. 13
                                                 ual tuning is selected.                ing" using set mode.
      TRANSMIT




                                                CW or FSK mode is selected for voice  Push [MODE] to select J3E mode (or           p. 9
                                                 transmission.                          H3E, R3E, etc.).
                 Transmit signal is unclear     Wrong type of emission is selected.      Push [MODE] to select the proper op-      p. 9
                 or distorted.                                                             erating mode.
                                                Microphone is too close to your          Speak into the microphone naturally         --
                                                 mouth.                                    and do not hold the microphone too
                                                                                           close to your mouth.
                 No contact is possible with  Wrong transmit frequency is set.           Push [TX FREQ] to check and store         p. 8
                 another station.                                                          the correct transmit frequency.
                 Frequency cannot be set        The [CE] key is not pushed ("s" does     Push [CE] ("s" appears), then enter       p. 8
                 via the keypad.                 not appear) before digit entry.           the desired frequency.
      DISPLAY




                                                2182 kHz is selected with the            Push [2182KHz], then set the fre-         p. 6
                                                 [2182KHz] switch.                         quency.
                 FSK ITU channels cannot        SITOR operation is set OFF in set        Set "SITOR" to ON in set mode.            p. 13
                 be selected.                    mode.




26
                                        OPTIONS AND SPECIFICATIONS                                                         9
I Specifications                                                 TRANSMITTER
                                                                  Output power:
GENERAL                                                                   Below 25 MHz       150/60/20*1 W PEP
 Frequency coverage:                                                                        125 W PEP (GMDSS only*2)
    Receive      500 kHz29.999 MHz                                       Above 25 MHz       60/20*1 W PEP
    Transmit     1.6 27.5 MHz                                                               85 W PEP (GMDSS only*2)
 Mode: J3E (USB/LSB), H3E, J2B (AFSK), F1B (FSK),               *1Except for Europe versions. *2The output power of GMDSS ver-
         R3E, A1A (CW); available modes differ with version        sions is provided by the AT-130/E antenna tuner.
 Number of channels: 1136 channels (max.)                        Spurious emissions: 65 dB (USA); 60 dB (Europe)
                        160 user programmable, 242 ITU            Carrier suppression: 40 dB
                                                                  Unwanted sideband suppression: 55 dB
                        SSB duplex, 72 ITU SSB simplex,
                                                                  Microphone impedance: 600 
                        662 ITU FSK duplex
 Antenna impedance: 50  nominal
 Usable temp. range: 30C to +60C (22F to +140F)           RECEIVER
 Frequency stability (20C to +60C):                           Sensitivity                     :
      0.514.9999 MHz         10 Hz                               J3E, R3E, J2B, A1A, F1B         6.3 V (0.51.5999 MHz)
      1529.9999 MHz          20 Hz (GMDSS 10 Hz)               (for 12 dB SINAD)                1.0 V (1.61.7999 MHz)
 Power supply requirement: 13.6 V DC15%                                                          0.5 V (1.829.9999 MHz)
                               (negative and floating grounds     H3E
                               available depending on version)    (for 10 dB S/N)                 32 V (0.51.5999 MHz)
 Maximum current drain (at 13.8 V DC):                                                           6.3 V (1.61.7999 MHz)
     Main unit    30 A (transmit at max. power)                                                   3.2 V (1.819.9999 MHz)
     Controller 1.2 A (receive at max. audio)                     Spurious response rejection ration:
 Dimensions (projections not included):                           (1.629.9999 MHz)              More than 70 dB
 Main unit         292(W)117(H)317(D) mm                        Audio output power:            4.5 W (at 10% distortion with
                   111/2(W)419/32(H)1215/16(D) in                                                a 4  load)
 Controller        292(W)116(H)66(D) mm                         Audio output impedance: 4 to 8 
                   111/2(W)49/16(H)219/32(D) in                 Clarity variable range: 150 Hz
 Weight:
  Main unit        7.45 kg; 16 lb 7 oz (negative ground)
                   (7.65 kg; 16 lb 14 oz GMDSS version)
 Controller        1.2 kg; 2 lb 12 oz                            All stated specifications are subject to change without notice
                                                                 or obligation.

I Options
GM-110DSC DSC TERMINAL UNIT                                      RC-21 CONTROLLER UNIT
6 channel emergency scanning receiver for distress calls, se-    Additional controller unit allows intercom function. Up to 2
lective calls, etc. Distress switch box attached.                controller unit can be connected.
AT-130/E AUTOMATIC ANTENNA TUNER                                 HS-50 HANDSET
Matches the transceiver to a long wire antenna with a mini-      Provides better audio reception during offshore conditions
mum of insertion loss.                                           and comes in handy for listening privacy on board.
OPC-566 SHIELDED CONTROL CABLE                                   HM-120 HAND MICROPHONE
Shielded control canble helps protect the transceiver from       Same as supplied with some versions of the IC-M710RT.
RF feedback and extends separation between tuner and             FL-100 CW/FSK NARROW FILTER
transceiver up to 10 m.                                          Allows better receiver selectivity for CW and FSK.
MN-100 ANTENNA MATCHER                                           Bandwidth: 500 Hz/6 dB
Matches the transceiver to a dipole antenna. Covers all HF       Not necessary with GMDSS versions.
bands from 1.5 to 30 MHz. 8 m  2 antenna wires come at-         UT-95 2-TONE ALARM UNIT
tached.                                                          Provides an alarm transmission for emergency use during
MN-100L ANTENNA MATCHER                                          maritime operation. Built-in to marine and GMDSS versions.
Matches the transceiver to a dipole antenna. Covers all HF       OPC-772 SEPARATION CABLE
bands from 1.5 to 30 MHz. 15 m  1 antenna wire comes at-        For extending the separation between the controller and
tached.                                                          main unit. Cable length: 20 m (67.4 ft).
AH-710 FOLDED DIPOLE ANTENNA                                     RS-M710RT REMOTE CONTROL SOFTWARE
Covers from 1.9 to 30 MHz band. Has an SO-239 connec-            Controls the IC-M710RT from your PC. Microsoft Win-
tor. Easy to assemble (non-kink construction).                   dows 95 only.
PS-60 DC POWER SUPPLY                                            MB-70 FLUSH MOUNT KIT
Provides 13.6 V DC (30 A) output from an AC outlet.              For mounting a controller or the RC-21 to a panel.
PS-65/66 DC-DC CONVERTER
Provides 13.6 V DC (30 A) output from a 10.516 V (PS-65)
or 1932 V (PS-66) DC power source.                                                                                               27
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A-5504H-1EX-q
Printed in Japan
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Disclaimer:
The information on this web site has not been checked for accuracy. It is for entertainment purposes only and should be independently verified before using for any other reason. There are five sources. 1) Documents and manuals from a variety of sources. These have not been checked for accuracy and in many cases have not even been read by anyone associated with L-36.com. I have no idea of they are useful or accurate, I leave that to the reader. 2) Articles others have written and submitted. If you have questions on these, please contact the author. 3) Articles that represent my personal opinions. These are intended to promote thought and for entertainment. These are not intended to be fact, they are my opinions. 4) Small programs that generate result presented on a web page. Like any computer program, these may and in some cases do have errors. Almost all of these also make simplifying assumptions so they are not totally accurate even if there are no errors. Please verify all results. 5) Weather information is from numerious of sources and is presented automatically. It is not checked for accuracy either by anyone at L-36.com or by the source which is typically the US Government. See the NOAA web site for their disclaimer. Finally, tide and current data on this site is from 2007 and 2008 data bases, which may contain even older data. Changes in harbors due to building or dredging change tides and currents and for that reason many of the locations presented are no longer supported by newer data bases. For example, there is very little tidal current data in newer data bases so current data is likely wrong to some extent. This data is NOT FOR NAVIGATION. See the XTide disclaimer for details. In addition, tide and current are influenced by storms, river flow, and other factors beyond the ability of any predictive program.