Instruction Manual
Page 5
...; Receiving and transmitting 9 ■ Call channel programming 10 ■ Microphone lock function 10 ■ Display backlight 10 ■ Channel comments 11 ■ AquaQuake water draining function 11 ■ Optional Voice scrambler operation 12 4 DUALWATCH/TRI-WATCH 13 ■ Description 13 ■ Operation 13 5 SCAN OPERATION 14-15 ■ Scan types 14 ■ Setting TAG channels 15 ■ Starting a scan 15 6 DSC OPERATION 16-38 ■ MMSI code programming 16...
...; Receiving and transmitting 9 ■ Call channel programming 10 ■ Microphone lock function 10 ■ Display backlight 10 ■ Channel comments 11 ■ AquaQuake water draining function 11 ■ Optional Voice scrambler operation 12 4 DUALWATCH/TRI-WATCH 13 ■ Description 13 ■ Operation 13 5 SCAN OPERATION 14-15 ■ Scan types 14 ■ Setting TAG channels 15 ■ Starting a scan 15 6 DSC OPERATION 16-38 ■ MMSI code programming 16...
Instruction Manual
Page 8
... to enter Call channel programming mode when the Call channel is selected. ➥ Hold down [H/L], push to enter channel comments programming mode. (p. 11) ➥ While turning power ON, push to enter Set mode. (p. 43) u SELECTOR DIAL [SELECTOR] (pp. 7-9) Rotate to turn power OFF. o SQUELCH CONTROL [SQL] (p. 9) Rotate to transmit a Distress call. 2 PANEL DESCRIPTION ■ Panel description Speaker Function display (p. 4) !3 VHF MARINE iM604 U/I/C H/L CH/WX MIC VOL SQL 9 16...
... to enter Call channel programming mode when the Call channel is selected. ➥ Hold down [H/L], push to enter channel comments programming mode. (p. 11) ➥ While turning power ON, push to enter Set mode. (p. 43) u SELECTOR DIAL [SELECTOR] (pp. 7-9) Rotate to turn power OFF. o SQUELCH CONTROL [SQL] (p. 9) Rotate to transmit a Distress call. 2 PANEL DESCRIPTION ■ Panel description Speaker Function display (p. 4) !3 VHF MARINE iM604 U/I/C H/L CH/WX MIC VOL SQL 9 16...
Instruction Manual
Page 10
...) Appears when in use. w POWER ICON (p. 9) ➥ "9" appears when high power is selected. ➥ "9" appears when low power is selected. r DUPLEX ICON (p. 8) Appears when a duplex channel is selected. t CHANNEL GROUP ICON (p. 8) Indicates whether a U.S.A. "75#," International "+06," Canadian "%#0" or weather "9:" channel is selected. tion ON or OFF. (p. 44) ➥ After pushing [O], hold down for 1 second to turn the RX speaker function...
...) Appears when in use. w POWER ICON (p. 9) ➥ "9" appears when high power is selected. ➥ "9" appears when low power is selected. r DUPLEX ICON (p. 8) Appears when a duplex channel is selected. t CHANNEL GROUP ICON (p. 8) Indicates whether a U.S.A. "75#," International "+06," Canadian "%#0" or weather "9:" channel is selected. tion ON or OFF. (p. 44) ➥ After pushing [O], hold down for 1 second to turn the RX speaker function...
Instruction Manual
Page 11
... and Auto Tune timer are turned OFF. (P. 39) !0 CHANNEL NUMBER READOUT Displays the selected operating channel number. !1 CHANNEL COMMENT INDICATOR Channel comments are displayed if programmed. (p. 11) !2 TIME ZONE INDICATOR ➥ Shows the current time data when a GPS receiver is connected, or the time data is manually programmed. • When the GPS current time data is selected. may blink every 2 seconds instead of current time data. may blink every 2 seconds instead of...
... and Auto Tune timer are turned OFF. (P. 39) !0 CHANNEL NUMBER READOUT Displays the selected operating channel number. !1 CHANNEL COMMENT INDICATOR Channel comments are displayed if programmed. (p. 11) !2 TIME ZONE INDICATOR ➥ Shows the current time data when a GPS receiver is connected, or the time data is manually programmed. • When the GPS current time data is selected. may blink every 2 seconds instead of current time data. may blink every 2 seconds instead of...
Instruction Manual
Page 12
... ■ Speaker microphone q Microphone Speaker w e q PTT SWITCH [PTT] Hold down [HI/LO], turn the Microphone lock function ON or OFF. (p. 10) 6 release to receive. (p. 9) w CHANNEL UP/DOWN KEYS [Y]/[Z] ➥ Push either key to change the operating channels, Set mode settings, etc. (pp. 7-9, 47) ➥ Checks TAG channels, changes scanning direction or manually resumes a scan. (p. 15) e TRANSMIT POWER KEY [HI/LO] ➥ Push to toggle the power high and low. (p. 9) • Some channels are set to only low power. ➥ While...
... ■ Speaker microphone q Microphone Speaker w e q PTT SWITCH [PTT] Hold down [HI/LO], turn the Microphone lock function ON or OFF. (p. 10) 6 release to receive. (p. 9) w CHANNEL UP/DOWN KEYS [Y]/[Z] ➥ Push either key to change the operating channels, Set mode settings, etc. (pp. 7-9, 47) ➥ Checks TAG channels, changes scanning direction or manually resumes a scan. (p. 15) e TRANSMIT POWER KEY [HI/LO] ➥ Push to toggle the power high and low. (p. 9) • Some channels are set to only low power. ➥ While...
Instruction Manual
Page 14
...;0 9 76% %%) D Weather channels The IC-M604A has 10 weather channels. w While holding down [H/L], push [CH/WX] to change the channel group, if necessary. • USA, International and Canadian channel groups can be set for monitoring broadcasts from NOAA (National Oceanographic and Atmospheric Administration.) The transceiver can automatically detect a weather alert tone on the selected weather channel while receiving on another channel, during standby on a regular channel or while scanning. (p. 48) q Push...
...;0 9 76% %%) D Weather channels The IC-M604A has 10 weather channels. w While holding down [H/L], push [CH/WX] to change the channel group, if necessary. • USA, International and Canadian channel groups can be set for monitoring broadcasts from NOAA (National Oceanographic and Atmospheric Administration.) The transceiver can automatically detect a weather alert tone on the selected weather channel while receiving on another channel, during standby on a regular channel or while scanning. (p. 48) q Push...
Instruction Manual
Page 15
...; Choose low power for short range communications, choose high power for 10 seconds after pushing [PTT], hold the microphone 5 to 10 cm (2 to 4 inches) from the speaker. • You may need to indicate the transmission will damage the transceiver. u Hold down [H/L], push [CH/WX] several times to change the channel group. (p. 8) r Rotate [SELECTOR] to only low power. q Push [POWER] to receive. y Push [H/L] to select the output power...
...; Choose low power for short range communications, choose high power for 10 seconds after pushing [PTT], hold the microphone 5 to 10 cm (2 to 4 inches) from the speaker. • You may need to indicate the transmission will damage the transceiver. u Hold down [H/L], push [CH/WX] several times to change the channel group. (p. 8) r Rotate [SELECTOR] to only low power. q Push [POWER] to receive. y Push [H/L] to select the output power...
Instruction Manual
Page 16
... channels in 7 levels, or set to 2 short beeps) 9 +06 6#) %#.. t Push [16•9] to program the displayed channel as the Call channel. • Push [CLR] to cancel. 0 9 76% +06. • The channel number stops blinking. 10 ■ Microphone lock function The Microphone lock function electrically locks [Y]/[Z] and [HI/LO] keys on the microphone, turn ON the power to adjust the brightness of the selected channel group. • "%#.." This prevents accidental channel changes...
... channels in 7 levels, or set to 2 short beeps) 9 +06 6#) %#.. t Push [16•9] to program the displayed channel as the Call channel. • Push [CLR] to cancel. 0 9 76% +06. • The channel number stops blinking. 10 ■ Microphone lock function The Microphone lock function electrically locks [Y]/[Z] and [HI/LO] keys on the microphone, turn ON the power to adjust the brightness of the selected channel group. • "%#.." This prevents accidental channel changes...
Instruction Manual
Page 17
... Dualwatch, Tri-watch or Scan first. w While holding down [PTT], and then turn power ON. • A low beep tone sounds while [H/L] key is being used . t Repeat steps q to r to program other key operations are disabled while the AquaQuake function is activated. BASIC OPERATION 3 ■ Channel comments Each channel can be labeled with a unique alphanumeric ID of [VOL] control setting. • All other channel comments, if desired...
... Dualwatch, Tri-watch or Scan first. w While holding down [PTT], and then turn power ON. • A low beep tone sounds while [H/L] key is being used . t Repeat steps q to r to program other key operations are disabled while the AquaQuake function is activated. BASIC OPERATION 3 ■ Channel comments Each channel can be labeled with a unique alphanumeric ID of [VOL] control setting. • All other channel comments, if desired...
Instruction Manual
Page 18
... code. q Push [POWER] to exit the Set mode. [Example]: Programming scrambler code 8. y Push [CLR], or rotate [SELECTOR] to select "'ZKV," then push [ENT] to turn OFF the power. D Programming scrambler codes There are 32 codes (1 to 32) or 128 codes (0 to understand one another, all transceivers in your dealer for details. The scrambler function automatically turns OFF when Channel 16 or 70 is selected. 3 BASIC OPERATION...
... code. q Push [POWER] to exit the Set mode. [Example]: Programming scrambler code 8. y Push [CLR], or rotate [SELECTOR] to select "'ZKV," then push [ENT] to turn OFF the power. D Programming scrambler codes There are 32 codes (1 to 32) or 128 codes (0 to understand one another, all transceivers in your dealer for details. The scrambler function automatically turns OFF when Channel 16 or 70 is selected. 3 BASIC OPERATION...
Instruction Manual
Page 20
... channels while monitoring Channel 16. when a signal is detected on Channel 16, the scan pauses until the signal disappears. 14 CH 05 CH 04 Normal scan, like priority scan, sequentially searches through all TAG channels. When the Weather alert function is turned ON, the previously selected (last used) weather channel is also checked while scanning. (p. 48) PRIORITY SCAN CH 01 CH 02 Set the TAG channels (scanned channel) before scanning. 5 SCAN OPERATION ■ Scan...
... channels while monitoring Channel 16. when a signal is detected on Channel 16, the scan pauses until the signal disappears. 14 CH 05 CH 04 Normal scan, like priority scan, sequentially searches through all TAG channels. When the Weather alert function is turned ON, the previously selected (last used) weather channel is also checked while scanning. (p. 48) PRIORITY SCAN CH 01 CH 02 Set the TAG channels (scanned channel) before scanning. 5 SCAN OPERATION ■ Scan...
Instruction Manual
Page 21
... the Set mode setting. (Channel 16 is still monitored during a Priority scan. rection, or to resume the scan manually. • A beep tones sounds and "" blinks when a signal is detected, the scan pauses until a long beep changes to 2 short beeps). • Repeat the above procedure to set as TAG channels. Clearing (or setting) all tagged channels To clear all TAG channels setting in the selected channel group while holding down [H/L], push [CH/WX] several times...
... the Set mode setting. (Channel 16 is still monitored during a Priority scan. rection, or to resume the scan manually. • A beep tones sounds and "" blinks when a signal is detected, the scan pauses until a long beep changes to 2 short beeps). • Repeat the above procedure to set as TAG channels. Clearing (or setting) all tagged channels To clear all TAG channels setting in the selected channel group while holding down [H/L], push [CH/WX] several times...
Instruction Manual
Page 25
... alarm sounds when the GPS data has been interrupted for 10 minutes, or has not been manually updated for 4 hours. ■ GPS information display When a GPS receiver (NMEA0183 ver. 2.0 or 3.01) is connected, the transceiver displays the GPS information after holding down [ENT] for 1 second. )25 +PHQ Hold down for the IC-M604A is received, the time display includes a date. may blink instead of...
... alarm sounds when the GPS data has been interrupted for 10 minutes, or has not been manually updated for 4 hours. ■ GPS information display When a GPS receiver (NMEA0183 ver. 2.0 or 3.01) is connected, the transceiver displays the GPS information after holding down [ENT] for 1 second. )25 +PHQ Hold down for the IC-M604A is received, the time display includes a date. may blink instead of...
Instruction Manual
Page 29
... repeat' mode. ➥ "!!" DSC OPERATION 6 u After receiving the acknowledgment, reply using the microphone. 9 +06 6#) 4GEGKXGF &KUVTGUU#%1UCMC $C[ %.4 $GGR 1HH %#..+0) ➥ A distress alert contains (default); • Kind of position and time displays when the GPS data is invalid, or has not been manually updated for 4 hours. ■ Transmitting DSC Calls To ensure the DSC function operated correctly, please make sure you set the squelch correctly. (p. 9) D Transmitting an Individual...
... repeat' mode. ➥ "!!" DSC OPERATION 6 u After receiving the acknowledgment, reply using the microphone. 9 +06 6#) 4GEGKXGF &KUVTGUU#%1UCMC $C[ %.4 $GGR 1HH %#..+0) ➥ A distress alert contains (default); • Kind of position and time displays when the GPS data is invalid, or has not been manually updated for 4 hours. ■ Transmitting DSC Calls To ensure the DSC function operated correctly, please make sure you set the squelch correctly. (p. 9) D Transmitting an Individual...
Instruction Manual
Page 49
...™ power is automatically turned ON, even if the power is displayed here. +06'4%1/ .+56'0 4#&+1 HM-162 (listener) 43 The optional COMMANDMICII™ or COMMANDMICIII™ microphone, is one, step w does not appear. MAND MIC-1] connector, is recognized as described on the HM-157. • To adjust the HM-162's speaker output level, rotate [SELECTOR]. +06'4%1/ 6#.- +06'4%1/ IC-M604A (caller...
...™ power is automatically turned ON, even if the power is displayed here. +06'4%1/ .+56'0 4#&+1 HM-162 (listener) 43 The optional COMMANDMICII™ or COMMANDMICIII™ microphone, is one, step w does not appear. MAND MIC-1] connector, is recognized as described on the HM-157. • To adjust the HM-162's speaker output level, rotate [SELECTOR]. +06'4%1/ 6#.- +06'4%1/ IC-M604A (caller...
Instruction Manual
Page 53
.... ceiver's functions: Scan type, Scan resume timer, Weather alert, Beep tone, Internal speaker, LCD contrast, Attenuation level, Automatic foghorn frequency, Radio power*1, Scrambler type*2, Scrambler code*2, Favorite channel and Remote ID. *1Appears only when an optional COMMANDMIC™ is connected. *2Appears only when an optional scrambler unit is used to change the settings of the item, then push [ENT] to the normal operating mode. • SET MODE CONSTRUCTION Rotate 5GV...
.... ceiver's functions: Scan type, Scan resume timer, Weather alert, Beep tone, Internal speaker, LCD contrast, Attenuation level, Automatic foghorn frequency, Radio power*1, Scrambler type*2, Scrambler code*2, Favorite channel and Remote ID. *1Appears only when an optional COMMANDMIC™ is connected. *2Appears only when an optional scrambler unit is used to change the settings of the item, then push [ENT] to the normal operating mode. • SET MODE CONSTRUCTION Rotate 5GV...
Instruction Manual
Page 54
... /KF /KP (Default: Min) D Automatic foghorn frequency The audio frequency of a key by turning beep tones OFF, or you like. • The selectable frequency range is op- When "10" is selected, holding down [PTT] sounds the foghorn- experiment with the selectable frequencies until the transceiver is 200 Hz to suit your preference. 8 SET MODE D Weather Alert A NOAA broadcast station transmits a weather alert tone before important weather information. The "9:#.'46" indicator blinks until you fi...
... /KF /KP (Default: Min) D Automatic foghorn frequency The audio frequency of a key by turning beep tones OFF, or you like. • The selectable frequency range is op- When "10" is selected, holding down [PTT] sounds the foghorn- experiment with the selectable frequencies until the transceiver is 200 Hz to suit your preference. 8 SET MODE D Weather Alert A NOAA broadcast station transmits a weather alert tone before important weather information. The "9:#.'46" indicator blinks until you fi...
Instruction Manual
Page 64
... beep sounds. • Beep tones are programmed for only • Change channels. The transceiver does • Bad connection to turn ON. • Check the connection between the battery- p. 48 p. 9 Receive signal cannot • Optional voice scrambler is open. • Turn the beep tone ON in the Set mode. • Push [6• LO/DX ] after pushing [O] to the power supply. not turn the function OFF. p. 9 p. 9 p. 11 p. 48 p. 9 Transmitting is set correctly. • Reset the scramble code...
... beep sounds. • Beep tones are programmed for only • Change channels. The transceiver does • Bad connection to turn ON. • Check the connection between the battery- p. 48 p. 9 Receive signal cannot • Optional voice scrambler is open. • Turn the beep tone ON in the Set mode. • Push [6• LO/DX ] after pushing [O] to the power supply. not turn the function OFF. p. 9 p. 9 p. 11 p. 48 p. 9 Transmitting is set correctly. • Reset the scramble code...
Instruction Manual
Page 65
... (typical) -120 dBm (typical) (CH 70 receiver) • Squelch sensitivity : Less than -117 dBm • Spurious response : More than 80 dB • Intermodulation : More than 80 dB • Adjacent channel selectivity : More than 80 dB • Hum and noise : More than 40 dB • Audio output power : 5.0 W (typical) at 13.8 V) • Power supply requirement • Frequency stability • Operating temp.
... (typical) -120 dBm (typical) (CH 70 receiver) • Squelch sensitivity : Less than -117 dBm • Spurious response : More than 80 dB • Intermodulation : More than 80 dB • Adjacent channel selectivity : More than 80 dB • Hum and noise : More than 40 dB • Audio output power : 5.0 W (typical) at 13.8 V) • Power supply requirement • Frequency stability • Operating temp.
Service Manual
Page 4
... to 3000 Hz : 2 kΩ ¤ RECEIVER • Receive system • Intermediate frequencies • Sensitivity • Squelch sensitivity • Adjacent channel selectivity • Spurious response • Intermodulation rejection ratio • Hum and noise • Audio output power (at 13.8 V DC) • Audio frequency responce *1Channel 70, *2Normal channels : Double conversion superheterodyne system : 1st 2nd 21.7 MHz*1, 30.15 MHz*2 450 kHz : Less than -10 dB...
... to 3000 Hz : 2 kΩ ¤ RECEIVER • Receive system • Intermediate frequencies • Sensitivity • Squelch sensitivity • Adjacent channel selectivity • Spurious response • Intermodulation rejection ratio • Hum and noise • Audio output power (at 13.8 V DC) • Audio frequency responce *1Channel 70, *2Normal channels : Double conversion superheterodyne system : 1st 2nd 21.7 MHz*1, 30.15 MHz*2 450 kHz : Less than -10 dB...