Icom IC-M402 User Manual
INSTRUCTION MANUAL
iM402
VHF MARINE TRANSCEIVER
This device complies with Part 15 of the FCC rules. Operation is subject to the following two conditions: (1) This device may not cause
harmful interference, and (2) this device must accept any interference
received, including interference that may cause undesired operation.
i
READ ALL INSTRUCTIONS carefully and completely
before using the transceiver.
SAVE THIS INSTRUCTION MANUAL — This in-
struction manual contains important operating instructions
for the IC-M402.
The installation of this equipment should
be made in such a manner as to respect
the EC recommended electromagnetic
field exposure limits (1999/519/EC).
The maximum RF power available from this device is 25
watts. The antenna should be installed as high as possible
for maximum efficiency and that this installation height
should be at least 6 meters above ground (or accessible)
level. In the case where an antenna cannot be installed at
a reasonable height, then the transmitter should neither
be continuously operated for long periods if any person is
within 6 meters of the antenna, nor operated at all if any
person is touching the antenna. If the antenna cannot be
installed at 6 meters or graterI, we recommend touse the
one watt setting to minimize RF exposure.
In all cases any possible risk depends on the transmitter
being activated for long periods. (actual recommendation
limits are specified as an average of 6 minutes) Normally
the transmitter is not active for long periods of time. Some
radio licenses will require that a timer circuit automatically
cuts the transmitter after 1–2 minutes etc.
CAUTION
IMPORTANTNOTE FOR RF SAFETY
IN CASE OF EMERGENCY
ii
If your vessel requires assistance, contact other vessels and
the Coast Guard by sending a distress call on Channel 16.
Or, transmit your distress call using digital selective calling on
Channel 70.
USING DIGITAL SELECTIVE CALLING (Ch 70)
DISTRESS CALL PROCEDURE
1. While lifting up the switch cover, push and
hold [DISTRESS] for 5 sec. until you hear 5
short beeps change to one long beep.
2. Wait for an acknowledgment from a coast
station.
•Channel 16 is automatically selected.
3.Push and hold [PTT], then transmit the
appropriate information as at left.
USING CHANNEL 16
DISTRESS CALL PROCEDURE
1.“MAYDAYMAYDAY MAYDAY.”
2.“THIS IS ...............” (name of vessel)
3.Your call sign or other indication of the vessel
(AND 9-digit DSC ID if you have one).
4.“LOCATED AT ...............” (your position)
5.The kind of the distress and assistance
required.
6.Any other information which might facilitate
the rescue.
NOTE FOR RF SAFETY ............................i
IMPORTANT .............................................. i
IN CASE OF EMERGENCY ...................... ii
TABLE OF CONTENTS ........................... iii
CAUTIONS .............................................. iv
1 OPERATING RULES .................. 1
2 PANELDESCRIPTION .......... 2 –4
■ Panel description ............................ 2
■ Function display .............................. 3
■ Microphone ..................................... 4
3 BASIC OPERATION .............. 5–7
■ Channel selection ........................... 5
■ Microphone lock function ................ 6
■ Receiving and transmitting ............. 6
■ Call channel programming .............. 7
■ Channel names .............................. 7
4 DUALWATCH/TRI-WATCH ......... 8
■ Description ............................................ 8
■ Operation ........................................ 8
5 SCAN OPERATIONS ........... 9–10
■ Scan types ...................................... 9
■ Setting tag channels ..................... 10
■ Starting a scan .............................. 10
6 DSC OPERATION .............. 11–18
■ MMSI code programming ............. 11
■ MMSI code check ......................... 21
■ Position indication ......................... 11
■ Distress call .................................. 12
■ Transmitting DSC calls ................. 13
■ DSC individual ID ......................... 16
■ Receiving DSC calls ..................... 17
7 INTERCOM OPERATION ......... 19
■ Intercom operation ........................ 19
8 SET MODE ........................ 20–21
■ Set mode programming ................ 20
■ Set mode items ............................. 20
9 CONNECTIONS AND
MAINTENANCE ................. 22–25
■ Supplied accessories .................... 22
■ Antenna ........................................ 22
■ Fuse replacement ......................... 22
■ Cleaning ....................................... 22
■ Connections .................................. 23
■ Mounting the transceiver .............. 24
■ Dimensions.................................... 25
10 TROUBLESHOOTING .............. 26
11 CHANNEL LIST ........................ 27
12 SPECIFICATIONS AND
OPTIONS ............................ 28–29
■ Specifications ............................... 28
■ Options ......................................... 29
13 HM-127 REMOTE-CONTROL
MICROPHONE ................... 30–41
■ Panel description .......................... 30
■ Function display ............................ 32
■ HM-127 supplied accessories ...... 33
■ Installation .................................... 34
■ Channel selection ......................... 36
■ Receiving and transmitting ........... 37
■ Lock functions ............................... 38
■ Display backlighting ...................... 38
■ Monitor function ............................ 38
■ Call channel programming ............ 39
■ Starting a scan .............................. 39
■ Setting tag channels ..................... 39
■ Dualwatch/Tri-watch operation ..... 40
■ Set mode programming ................ 40
■ Intercom operation ........................ 41
■ Channel names ............................ 41
TEMPLATE
iii
TABLE OF CONTENTS
iv
RWARNING! NEVER connect the transceiver to an AC
outlet. This may pose a fire hazard or result in an electric
shock.
CAUTION: Changes or modifications to this device, not ex-
pressly approved by Icom Inc., could void your authority to
operate this device under FCC regulations.
NEVER connect the transceiver to a power source of more
than 16 V DC or use reverse polarity. This will ruin the transceiver.
NEVER cut the DC power cable between the DC plug and
fuse holder. If an incorrect connection is made after cutting,
the transceiver may be damaged.
NEVER place the transceiver where normal operation of the
vehicle may be hindered or where it could cause bodily injury.
KEEP the transceiver at least 3.3 ft (1 m) away from the
ship’s navigation compass.
DO NOT use or place the transceiver in areas with temper-
atures below –4°F (–20°C) or above +140°F (+60°C) or, in
areas subject to direct sunlight, such as the dashboard.
AVOID the use of chemical agents such as benzine or al-
cohol when cleaning, as they may damage the transceiver
surfaces.
BE CAREFUL! The transceiver rear panel will become
hot when operating continuously for long periods.
Place the transceiver in a secure place to avoid inadvertent
use by children.
BE CAREFUL! The transceiver and optional HM-127 em-
ploy waterproof construction, which corresponds to JIS waterproof specification, grade 7 (1 m/30 min.). However, once
the transceiver or microphone has been dropped, waterproofing cannot be guaranteed due to the fact that the case
may be cracked, or the waterproof seal damaged, etc.
CAUTIONS
1
1
OPERATING RULES
◊ PRIORITIES
• Read all rules and regulations pertaining to priorities and
keep an up-to-date copy handy. Safety and distress calls
take priority over all others.
•You must monitor channel 16 when you are not operating on
another channel.
•False or fraudulent distress signals are prohibited and punishable by law.
◊ PRIVACY
•Information overheard but not intended for you cannot lawfully be used in any way.
•Indecent or profane language is prohibited.
◊ RADIO LICENSES
(1) SHIP STATION LICENSE
You must have a current radio station license before using the
transceiver. It is unlawful to operate a ship station which is not
licensed.
Inquire through your dealer or the appropriate government
agency for a Ship-Radiotelephone license application. This
government-issued license states the call sign which is your
craft’s identification for radio purposes.
(2) OPERATOR’S LICENSE
A Restricted Radiotelephone Operator Permit is the license
most often held by small vessel radio operators when a radio
is not required for safety purposes.
The Restricted Radiotelephone Operator Permit must be
posted or 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, ends the call and
makes the necessary log entries.
Keep a copy of the current government rules and regulations
handy.
Radio license for boaters (U.S.A. only)
The Telecommunications Act of 1996 permits recreational
boaters to have and use a VHF marine radio, EPIRB, and
marine radar without having an FCC ship station license.
Boaters travelling on international voyages, having an HF
single sideband radiotelephone or marine satellite terminal,
or required to carry a marine radio under any other regulation must still carry an FCC ship station license. For further
information, see the FCC Ship Radio Stations Fact Sheet.
2
2
PANEL DESCRIPTION
■ Panel description
Speaker Function display
wq
uertyi
q DISTRESS SWITCH [DISTRESS]
Transmits distress call when pushed for 5 sec. (p. 17)
w POWER / VOLUME CONTROL [VOL]
Turns power ON and OFF and adjusts the audio level. (p. 6)
e SQUELCH CONTROL [SQL]
Sets the squelch threshold level. (p. 6)
r TRANSMIT POWER SWITCH [H/L]
➥Toggles high and low power when pushed. (p. 6)
•Some channels are set to low power only.
➥While pushing this switch, other switches perform sec-
ondary functions.
t CHANNEL SWITCH [CH/WX•DUAL]
➥Selects and toggles the regular channels and weather
channel when pushed momentarily. (p. 5)
➥While pushing [HI/LO], selects one of 3 regular channels
in sequence when pushed. (p. 5)
•International, U.S.A. and Canadian channels are available for
regular channels.
➥Starts dualwatch or tri-watch when pushed for 1 sec.
(p. 8)
➥Stops dualwatch or tri-watch when either is activated.
y CHANNEL 16/CALL CHANNEL SWITCH [16•9]
➥Selects channel 16 when pushed. (p. 5)
➥Selects call channel when pushed for 1 sec. (p. 5)
•“CALL” appears when call channel is selected.
➥Push for 3 sec. to enter call channel programming con-
dition when call channel is selected. (p. 7)
➥While pushing [H/L], enters memory name programming
condition. (p. 7)
➥Enters set mode when pushed while turning power ON.
(p. 20)
u CHANNEL UP / DOWN SWITCHES [YY] / [ZZ]
➥Push to select the operating channels, set mode con-
tents, etc. (p. 6)
➥While pushing [H/L], push [Y] / [Z] to adjust the bright-
ness of the LCD and switch backlight.
➥Push for 1sec. to start/stop scanning(p. 9)
➥Push [Y] and [Z] for 1sec. to toggle the tag setting for
the displayed channel. (p. 10)
i DSC/POSITION SWITCH [DSC/ENT•POS]
➥Selects the DSC menu when pushed. (p. 11)
➥Shows current position and time from an optional GPS
receiver, etc. when pushed for 1 sec. (p. 11)
3
2
PANEL DESCRIPTION
■ Function display
q TRANSMIT INDICATOR (p. 6)
“TX” appears while transmitting.
w BUSY INDICA TOR (p. 6)
“BUSY” appears when receiving a signal or when the
squelch opens.
e TAG CHANNEL INDICATOR (p. 10)
Appears when a tag channel is selected.
r CALL CHANNEL INDICATOR
“CALL” appears when the call channel is selected. (p. 5)
t LOW POWER INDICATOR (p. 6)
“LOW” appears when low power is selected.
y DUPLEX INDICATOR (p. 5)
Appears when a duplex channel is selected.
u WEATHER CHANNEL INDICATOR (p. 5, 36)
➥“WX” appears when a weather channel is selected.
➥“AL T” appears when the weather alert function is in use;
flashes when an alert tone is received.
i GPS INDICATOR
➥“GPS” appears while valid position data is received.
➥“GPS” blinks when invalid position data is received.
➥“GPS” disappears when no GPS receiver is connected.
o DSC INDICATOR
➥Indicates the DSC status. (p. 14)
!0 CHANNEL NAME INDICATOR
➥Channel comment appears if programmed. (p. 7)
➥“ ” scrolls when the battery voltage drops to
approx. 10 V DC or below.
➥“ ” appears during dualwatch; “ ” appears during
tri-watch. (p. 8)
!1 CHANNEL NUMBER READOUT
➥Indicates the selected operating channel number. “A”
appears when a simplex channel is selected. (p. 5)
➥In set mode, indicates the selected condition. (p. 20)
!2 CHANNEL GROUP INDICATOR (p. 5)
Indicates whether a U.S.A. (USA), International (INT), or
Canadian (CANADA) channel is in use.
U
C
I
LOW
D
WX ALT
CALL
BUSY
BUSY
TXTX
TAG
GPS DSC
POS
REPLY
wq
e
r
t
y
i
o
u
!0
!1
!2
PANEL DESCRIPTION
4
2
■ Microphone
q PTT SWITCH [PTT]
Push and hold to transmit; release to receive. (p. 6)
w CHANNEL UP/DOWN SWITCHES [YY]/[ZZ]
Push either switch to change the operating memory channel, set mode contents, etc. (p. 6)
e CHANNEL 16/CALL CHANNEL SWITCH [16•9]
➥Same as the [H/L] switch on the front panel. (p. 6)
➥Selects channel 16 when pushed. (p. 5)
➥Selects call channel when pushed for 1 sec. (p. 5)
•“CALL” appears when call channel is selected.
➥Push for 3 sec. to enter call channel programming con-
dition when call channel is selected. (p. 7)
➥While pushing [H/L], enters memory name programming
condition. (p. 7)
➥While pushing [16] on the supplied microphone, turn
power ON to toggle the lock function ON and OFF. (p. 6)
q
Microphone
w
e
■ Channel selection
◊ Channel 16
Channel 16 is the distress and safety channel. It is used for
establishing initial contact with another station and for emergency communications. Channel 16 is monitored during both
dualwatch and tri-watch. While standing by, you must monitor
channel 16.
➥Push [16 ] momentarily to select channel 16.
➥Push [CH/WX] to return to the
condition before selecting channel 16, or push [Y] / [Z] to select an operating channel.
◊ Channel 9 (Call channel)
Each regular channel group has a separate leisure-use call
channel. The call channel is monitored during tri-watch. The
call channels can be programmed (p. 7) and are used to store
your most often used channels in each channel group for
quick recall.
➥Push [16] for 1 sec. to select the call channel of the se-
lected channel group.
•“CALLING” and call channel number appear.
•Each channel group may have an independent call channel.
➥Push [CH/WX] to return to the
condition before selecting call
channel
, or push [Y] / [Z] to
select an operating channel.
◊ U.S.A., Canadian and international channels
There are 57 U.S.A., 61 Canadian and 57 international channels. These channel groups may be specified for the operating area.
q Push [CH/WX] to select a regular channel.
•If a weather channel appears, push [CH/WX] again.
w Push [CH/WX] while pushing [H/L] to change the channel
group, if necessary.
• U.S.A., International (INT) and Canadian channels can be se-
lected in sequence.
e Rotate the channel selector to select a channel.
•“D” appears for duplex channels.
•“A” appears for simplex channels.
5
3
BASIC OPERATION
Push
I
TAG
U
U.S.A. channels
Push +
Push
I
TAG
CALL
C
Canadian channels
TAG
TAG
TAG
D
I
International channels
◊ Weather channels
There are 10 weather channels. Used for monitoring weather
channels from the NOAA (National Oceanographic and Atmospheric Administration) broadcasts.
The transceiver can detect a weather alert tone on the selected weather channel while receiving the channel, during
standby on a regular channel or while scanning. (p. 20)
q Push [CH/WX] once or twice to select a weather channel.
•“WEATHER” appears when a
weather channel is selected.
“WX ALT” appears when the
weather alert function is in use.
(p. 20)
w Rotate the channel selector to
select a channel.
• Channels are memorized sepa-
rately for each channel group
■ Microphone lock function
The microphone lock function electrically locks the [Y]/[Z]
and [16] switches on the supplied microphone. This prevents
accidental channel changes and accidental function access.
➥While pushing [16] on the supplied microphone, turn power
ON to toggle the lock function ON and OFF.
3
BASIC OPERATION
6
Push
once
or
twice
When weather alert is OFF.
When weather alert is ON.
WX
WX
ALT
■ Receiving and transmitting
CAUTION: Transmitting without an antenna may dam-
age the transceiver.
q Turn [VOL] right to turn power ON.
w Set the audio and squelch levels.
➥Rotate [SQL] fully counterclockwise in advance.
➥Rotate [VOL] to adjust the audio output level.
➥Rotate [SQL] clockwise until the noise disappears.
e Push [Y]/[Z] to select the desired channel. (p. 5)
• When receiving a signal, “BUSY” appears and audio is emitted
from the speaker.
r Push [H/L] to select the output power if necessary.
•“LOW” appears when low power is selected.
•Choose high power for longer distance communications.
•Some channels are for low power only.
t Push and hold [PTT] to transmit, then speak into the mi-
crophone.
•“TX” appears.
•Channel 70 cannot be used for transmission (for GMDSS use).
Simplex channels, 3, 21, 23, 61, 64, 81, 82 and 83 CAN-
NOT be lawfully used by the general public in U.S.A. waters.
y Release [PTT] to receive.
IMPORTANT: To maximize the readability of your transmitted signal, pause a few sec. after pushing [PTT], hold
the microphone 4 to 6 inches (10 to 15 cm) from your
mouth and speak at a normal voice level.
3
BASIC OPERATION
7
■ Call channel programming
The call channel is used to select Channel 9, however, you
can program your most often-used channels in each channel
group for quick recall.
q While pushing [H/L], push [CH/WX] one or more times to
select the desired channel group (U.S.A., International,
Canada) to be programmed.
w Push [16 ] for 1 sec. to select the call channel of the se-
lected channel group.
•“CALL” and call channel number appear.
e Push [16 ] again for 3 sec. (until
long beep changes to 2 short
beeps) to enter call channel programming condition.
•Channel number starts flashing.
r Push [Y]/[Z] to select the de-
sired channel.
t Push [16 ] to program the dis-
played channel as the call channel.
•Push [CH/WX] to cancel.
•The channel number stops flashing.
■ Channel names
Memory channels can be tagged with alphanumeric names
of up to 10 characters each.
Capital letters, small letters, numerals, some symbols (! " # $
% & ' ( ) ✱ + ,– .⁄) and spaces can be used.
q Select the desired memory channel.
•Cancel dual watch, tri-watch or scan in advance.
w While pushing [H/L], push [16 ] to edit memory channel
name.
•Acursor appears and blinks.
e Select the desired character by pushing [Y]/[Z].
•Push [CH/WX] or [H/L] for cursor movement.
r Push [16 ] to input and set the name.
•Push [H/L] to cancel.
•The cursor disappears.
t Repeat steps q to r to program other memory channel
names, if desired.
I
I
TAG
TAG
D
CALL
CALL
TAG
I
8
4
DUAL WATCH/TRI-WATCH
■ Description
Dualwatch monitors channel 16 while you are receiving another channel; tri-watch monitors Channel 16 and the call
channel while receiving another channel.
DUALWATCH/TRI-WATCH SIMULATION
• If a signal is received on Channel 16, dualwatch/tri-watch pauses
on Channel 16 until the signal disappears.
•If a signal is received on the call channel during tri-watch, tri-watch
becomes dualwatch until the signal disappears.
•To transmit on the selected channel during dualwatch/tri-watch, push
and hold [PTT].
■ Operation
q Select the desired operating channel.
w Select dualwatch or tri-watch in set mode. (p. 20)
e Push [CH/WX] for 1 sec. to start dualwatch or tri-watch.
•“ ” appears during dualwatch; “ ” appears during tri-watch.
•Beep tone sounds when a signal is received on Channel 16.
r To cancel dualwatch/tri-watch, push [CH/WX] again.
Dualwatch Tri-watch
Call channel
Operating tri-watch on INT
channel 25
Operating dual-watch on INT
channel 25
BUSY
BUSY
BUSY
[Example]
TAG
D
Dual-watch starts.
I
BUSY
TAG
Signal received on
D
channel 16 takes
TAG
D
priority.
Dual-watch resumes
after the signal
disappears.
I
I
TAG
D
Tri-watch starts.
I
BUSY
TAG
CALL
Signal is received
on call channel.
I
BUSY
TAG
Signal received on
D
channel 16 takes
TAG
D
priority.
Tri-watch resumes
after the signal
disappears.
I
I
9
■ Scan types
Scanning is an efficient way to locate signals quickly over a
wide frequency range. The transceiver has priority scan and
normal scan.
When the weather alert function is in use, the selected
weather channel is checked while scanning. (p. 20)
Set the tag channels (scanned channel) before scanning.
Clear the tag channels which inconveniently stop scanning,
such as digital communication use.
Choose priority or normal scan in set mode. (p. 20)
NORMAL SCAN
Normal scan, like priority scan, searches through all tag
channels in sequence. However, unlike priority scan, Channel 16 is not checked unless Channel 16 is set as a tag
channel.
5
SCAN OPERATIONS
PRIORITY SCAN
Priority scan searches through all tag channels in sequence while monitoring Channel 16. When a signal is detected on Channel 16, scan pauses until the signal disappears; when a signal is detected on a channel other than
Channel 16, scan becomes dualwatch until the signal disappears.
CH 01
CH 06
CH 05 CH 04
CH 16
CH 02
CH 03
CH 01 CH 02
CH 06
CH 05 CH 04
CH 03
10
5
SCAN OPERATION
BUSY
[Example]: Starting a priority scan.
■ Setting tag channels
For more efficient scanning, add desired channels as tag
channels or clear tag channels for unwanted channels. Channels set as non-tag channels will be skipped during scanning.
Tag channels can be assigned to each channel group
(U.S.A., International, Canada) independently.
q While pushing [H/L], push [CH/WX] one or more times to
select the desired channel group, if desired.
w Select the desired channel to set as a tag channel.
e Push [Y] and [Z] for 1 sec. to set the displayed channel
as a tag channel.
•“TAG” appears in the function display.
r To cancel the tag channel setting, repeat e.
•“TAG” disappears.
•Clearing all tag channels in the selected channel group
➥While pushing [Y] and [Z], Turn power ON to clear all tag
channels in the channel group.
■ Starting a scan
Set scan type (priority or normal scan) and scan resume timer
in advance using set mode. (p. 20)
q Set tag channels as described at left.
w Make sure the squelch is closed to start a scan.
e While pushing [H/L], push [CH/WX] one or more times to
select the desired channel group, if desired.
r Push [Y] or [Z] for 1 sec. to start priority or normal scan.
•“Pri scan 16” or “Normal scan” appears in the function display.
• When a signal is detected, scan pauses until the signal disappears or resumes after pausing 5 sec. according to set mode setting. (Channel 16 is still monitored during priority scan.)
•Rotate the channel selector to check the scanning tag channels,
to change the scanning direction or resume the scan manually.
• “16” flashes and a beep tone sounds when a signal is received
on Channel 16 during priority scan.
• Push [Y] and [Z] for 1 sec. to set the paused channel as a tag
channel.
t To stop the scan, push [Y] or [Z].
Push
[Y] or [Z]
for 1 sec.
I
TAG
D
TAG
D
I
I
BUSY
TAG
D
Scan starts. When a signal is received
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