Icom Marine Radio IM422 User Manual

INSTRUCTION MANUAL

VHF MARINE TRANSCEIVER

iM422

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IN CASE OF EMERGENCY

NOTE

If your vessel requires assistance, contact other vessels and

the Coast Guard by sending a Distress call on Channel 16.

A WARNING STICKER is supplied with the transceiver.

To comply with FCC regulations, this sticker must be afﬁxed in

such a location as to be readily seen from the operating con-

trols of the radio as in the diagram below. Make sure the cho-

sen location is clean and dry before applying the sticker.

(p. 36)

USING CHANNEL 16

DISTRESS CALL PROCEDURE

1. “MAYDAY MAYDAY 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).

EXAMPLE

4. “LOCATED AT ...............” (your position)

5. The nature of the distress and assistance required.

6. Any other information which might facilitate the rescue.

WARNING

STICKER

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 key cover, push and hold

[DISTRESS] for 5 sec. until you hear 5 short beeps

change to one long beep.

2. Wait for an acknowledgment on Channel 70 from a

coast station.

• After the acknowledgement is received, Channel 16 is

automatically selected.

3. Push and hold [PTT], then transmit the appropriate

information as listed above.

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RADIO OPERATOR WARNING

Icom requires the radio operator to meet the

FCC Requirements for Radio Frequency Expo-

sure. An omnidirectional antenna with gain not

greater than 9 dBi must be mounted a minimum

FAILURE TO OBSERVE THESE LIMITS MAY ALLOW

THOSE WITHIN THE MPE RADIUS TO EXPERIENCE RF

RADIATION ABSORPTION WHICH EXCEEDS THE FCC

MAXIMUM PERMISSIBLE EXPOSURE (MPE) LIMIT.

IT IS THE RESPONSIBILITY OF THE RADIO OPERATOR

TO ENSURE THAT THE MAXIMUM PERMISSIBLE EXPO-

SURE LIMITS ARE OBSERVED AT ALL TIMES DURING

RADIO TRANSMISSION. THE RADIO OPERATOR IS TO

ENSURE THAT NO BYSTANDERS COME WITHIN THE

RADIUS OF THE MAXIMUM PERMISSIBLE EXPOSURE

LIMITS.

WARNING

of 5 meters (measured from the lowest point of

the antenna) vertically above the main deck and

all possible personnel. This is the minimum safe separation

distance estimated to meet all RF exposure compliance re-

quirements. This 5 meter distance is based on the FCC Safe

Maximum Permissible Exposure (MPE) distance of 3 meters

added to the height of an adult (2 meters) and is appropriate

for all vessels.

Determining MPE Radius

THE MAXIMUM PERMISSIBLE EXPOSURE (MPE) RA-

DIUS HAS BEEN ESTIMATED TO BE A RADIUS OF

ABOUT 3M PER OET BULLETIN 65 OF THE FCC.

THIS ESTIMATE IS MADE ASSUMING THE MAXIMUM

POWER OF THE RADIO AND ANTENNAS WITH A MAXI-

MUM GAIN OF 9dBi ARE USED FOR A SHIP MOUNTED

SYSTEM.

For watercraft without suitable structures, the antenna must

be mounted so as to maintain a minimum of 1 meter vertically

between the antenna, (measured from the lowest point of the

antenna), to the heads of all persons AND all persons must

stay outside of the 3 meter MPE radius.

Do not transmit with radio and antenna when persons are

within the MPE radius of the antenna, unless such persons

(such as driver or radio operator) are shielded from antenna

ﬁeld by a grounded metallic barrier. The MPE Radius is the

minimum distance from the antenna axis that person should

maintain in order to avoid RF exposure higher than the allow-

able MPE level set by FCC.

iii

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TABLE OF CONTENTS

FOREWORD ……………………………… i

IMPORTANT ……………………………… i

EXPLICIT DEFINITIONS ………………… i

IN CASE OF EMERGENCY …………… ii

NOTE ……………………………………… ii

RADIO OPERATOR WARNING………… iii

TABLE OF CONTENTS ………………… iv

PRECAUTIONS ………………………… v

DSC OPERATION ……………… 13–29

I MMSI code programming ……… 13

I MMSI code check ………………… 13

I DSC Address ID ………………… 14

I Position indication………………… 15

I Distress call ……………………… 16

I Transmitting DSC calls…………… 17

I Receiving DSC calls……………… 26

12 COMMANDMIC II™ HM-157 … 40–53

I Panel description ………………… 40

I Function display ………………… 42

I Channel selection ………………… 44

I Receiving and transmitting ……… 45

I Call channel programming ……… 46

I Lock functions …………………… 46

I Display backlight ………………… 47

I Monitor function…………………… 47

I Dualwatch/Tri-watch operation … 47

I Setting TAG channels …………… 48

I Starting a scan …………………… 48

I Set mode programming ………… 49

I Intercom operation ……………… 50

I Public Address function ………… 50

I RX Speaker function …………… 50

I Channel comments ……………… 51

I HM-157 supplied accessories…… 51

I Installation ………………………… 52

13 CHANNEL LIST …………………… 54

OTHER FUNCTIONS ………… 30–31

I Intercom operation ……………… 30

I Public Address (PA) function …… 31

I RX Speaker function …………… 31

OPERATING RULES ………………… 1

PANEL DESCRIPTION …………… 2–4

I Front panel ………………………… 2

I Microphone ………………………… 3

I Function display …………………… 4

SET MODE ……………………… 32–34

I Set mode programming ………… 32

I Set mode items …………………… 32

BASIC OPERATION ……………… 5–9

I Channel selection ………………… 5

I Receiving and transmitting ……… 7

I Call channel programming………… 8

I Channel comments………………… 9

I Microphone Lock function ………… 9

I Display backlight …………………… 9

CONNECTIONS AND

MAINTENANCE………………… 35–37

I Connections ……………………… 35

I Supplied accessories …………… 36

I Antenna …………………………… 36

I Fuse replacement………………… 36

I Mounting the transceiver ………… 36

I Optional MB-69 installation ……… 37

14 TEMPLATE ………………………… 55

SCAN OPERATION …………… 10–11

I Scan types ………………………… 10

I Setting TAG channels …………… 11

I Starting a scan …………………… 11

10 TROUBLESHOOTING……………… 38

11 SPECIFICATIONS AND

DUALWATCH/TRI-WATCH………… 12

I Description………………………… 12

I Operation ………………………… 12

OPTIONS …………………………… 39

I Speciﬁcations …………………… 39

I Options …………………………… 39

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PRECAUTIONS

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.

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.

BE CAREFUL! The transceiver and the optional HM-157

COMMANDMICII™ employ waterproof construction, which cor-

responds to IPX7 of the international standard IEC 60529

(2001). 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.

NEVER connect the transceiver to a power source of more

than 16 V DC or use reverse polarity. This will ruin the trans-

ceiver.

NEVER cut the DC power cable between the DC plug at the

back of the transceiver and fuse holder. If an incorrect con-

nection is made after cutting, the transceiver may be dam-

aged.

NEVER place the transceiver where normal operation of the

vessel 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. If the transceiver becomes dusty or dirty, wipe it

clean with a soft, dry cloth.

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OPERATING RULES

(2) OPERATOR’S LICENSE

PRIORITIES

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.

• 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.

The Restricted Radiotelephone Operator Permit must be

posted or kept with the operator. Only a licensed radio opera-

tor may operate a transceiver.

• You must monitor Channel 16 when you are not operating

on another channel.

• False or fraudulent distress signals are prohibited and pun-

ishable by law.

However, non-licensed individuals may talk over a transceiver

if a licensed operator starts, supervises, ends the call and

makes the necessary log entries.

PRIVACY

• Information overheard but not intended for you cannot law-

fully be used in any way.

Keep a copy of the current government rules and regulations

handy.

• Indecent or profane language is prohibited.

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 traveling on international voyages, having an HF

single sideband radiotelephone or marine satellite termi-

nal, 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.

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.

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PANEL DESCRIPTION

I Front panel

w CHANNEL/WEATHER CHANNEL KEY [CH/WX•DUAL]

➥ Selects and toggles the regular channel and Weather

channel when pushed momentarily. (p. 6)

➥ Push for 1 sec. to start Dualwatch or Tri-watch. (p. 12)

➥ Push to stop Dualwatch or Tri-watch when either is acti-

vated. (p. 12)

Function

display (p. 4)

Speaker

➥ Advance the cursor while in the channel comment pro-

gramming condition. (p. 9)

e DSC/POSITION KEY [DSC•POS]

➥ Push to select the DSC menu. (p. 13)

➥ Push for 1 sec. to show the current position from a GPS

receiver. (p. 15)

r POWER/VOLUME CONTROL [VOL] (p. 7)

➥ Push for 2 sec. to turn power ON and OFF.

➥ Rotate to adjust the audio level.

t SQUELCH CONTROL [SQL]

Rotate to set the squelch threshold level. (p. 7)

y DISTRESS KEY [DISTRESS]

q CHANNEL 16/CALL CHANNEL KEY [16•9]

➥ Push to select Channel 16. (p. 5)

➥ Push for 1 sec. to select Call channel. (p. 5)

• “CALL” appears when Call channel is selected.

Push for 5 sec. to transmit a Distress call. (p. 16)

u ATTENUATOR/INTERCOM KEY [LO/DX•IC]

➥ Push to toggle the Attenuator function ON or OFF. (p. 7)

• “LOC” appears when the Attenuator function is turned ON.

➥ Push for 1 sec. to activate an optional Intercom func-

tion. (p. 30)

➥ Push for 3 sec. to enter Call channel programming con-

dition when Call channel is selected. (p. 8)

➥ While pushing [CH/WX•DUAL], push to enter the chan-

nel comment programming condition. (p. 9)

➥ Move the cursor backward while in the channel com-

ment programming condition. (p. 9)

➥ Push and hold to calls the optional HM-157 ^COMMAND-

MIC II™ while in Intercom mode. (p. 30)

➥ While turning power ON, push to enter Set mode.

(p. 32)

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PANEL DESCRIPTION 2

I Microphone

i PUBLIC ADDRESS/RX SPEAKER KEY [PA•RX

]

➥ Push to turn the Public Address mode ON or OFF. (p. 31)

➥ Push for 1 sec. to turn the RX Speaker mode ON or

OFF. (p. 31)

o SCAN KEY [SCAN•TAG] (p. 11)

➥ Push to start and stop Normal or Priority scan.

➥ Push for 1 sec. to set or clear the displayed channel as

a TAG (scanned) channel.

Microphone

➥ While pushing [HI/LO] on the microphone, push for

3 sec. to clear or set all TAG channels in the selected

channel group.

! CHANNEL UP/DOWN KEYS [Y]/[Z]•[U/I/C]

➥ Push to select the operating channels, Set mode set-

tings, etc. (pgs. 5, 6, 32)

➥ Push and hold [Y] to move upward through the operat-

ing channels continuously.

➥ Push and hold [Z] to move downward through the op-

erating channels continuously.

➥ While pushing [SCAN•TAG], push [Y] or [Z] to adjust

the brightness of the LCD and key backlight. (p. 9)

➥ Push both keys to select one of three channel groups

in sequence. (p. 6)

• U.S.A., International and Canadian channels are available.

➥ Checks TAG channels, changes scanning direction or

resumes the scan manually during scan. (p. 11)

➥ Push [Y] or [Z] to adjust the audio level in Public Ad-

dress mode. (p. 31)

q PTT SWITCH [PTT]

Push and hold to transmit; release to receive. (p. 7)

w CHANNEL UP/DOWN KEYS [Y]/[Z]

➥ Push either key to change the operating memory chan-

nel, Set mode settings, etc. (pgs. 5, 6, 32)

➥ Checks TAG channels, changes scanning direction or

resumes the scan manually during scan. (p. 11)

e TRANSMIT POWER KEY [HI/LO]

➥ Toggles power high and low when pushed. (p. 7)

• Some channels are set to low power only.

➥ While pushing [HI/LO], turn power ON to toggle the Mi-

crophone Lock function ON and OFF. (p. 9)

➥ While pushing [PA•RX ], push [Y] or [Z] to adjust the

audio level in RX Speaker mode. (p. 31)

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PANEL DESCRIPTION

I Function display

y DSC INDICATOR

Indicates the DSC status.

• “DSC” appears when a DSC call is received. (pgs. 25, 26)

• “POS REPLY” appears when a Position Request Reply call or

Position Report Reply call is received. (pgs. 28, 29)

u GPS INDICATOR

➥ Appears while valid position data is received.

➥ Blinks when invalid position data is received.

➥ Disappears when no GPS receiver is connected.

i DUPLEX INDICATOR (p. 6)

Appears when a duplex channel is selected.

o CHANNEL NUMBER READOUT

q CHANNEL COMMENT INDICATOR

➥ Channel comment appears and scrolls if programmed.

(p. 9)

➥ Indicates the selected operating channel number.

• “ ” appears when a simplex channel is selected. (p. 6)

➥ In Set mode, indicates the selected condition. (p. 32)

➥ “ ” or “ ” blinks during Dualwatch or Tri-watch, re-

spectively. (p. 12)

➥ “

” or “

” appears during Priority or Normal

! CHANNEL GROUP INDICATOR (p. 6)

Indicates whether a U.S.A. “USA,” International “INT” or

Canadian “CAN” channel is in use.

! CALL CHANNEL INDICATOR (p. 5)

Appears when the call channel is selected.

! BUSY INDICATOR (p. 7)

scan, respectively. (p. 11)

➥

In Set mode, indicates and scrolls the selected item. (p. 9)

w WEATHER CHANNEL INDICATOR (pgs. 6, 33)

➥ “WX” appears when a weather channel is selected.

➥ “WX ALT” appears when the Weather Alert function is

in use; blinks when an alert tone is received.

Appears when receiving a signal or when the squelch opens.

e RX SPEAKER INDICATOR (p. 31)

Appears during the RX Speaker mode.

r LOCAL INDICATOR (p. 7)

! TRANSMIT INDICATOR (p. 7)

Appears while transmitting.

! LOW POWER INDICATOR (p. 7)

Appears when low power is selected.

! TAG CHANNEL INDICATOR (p. 11)

Appears when the Attenuator function is turned ON.

t LOW BATTERY INDICATOR

Appears when the battery voltage drops to approx. 10 V

DC or below.

Appears when a TAG channel is selected.

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BASIC OPERATION

I Channel selection

Channel 16

Channel 9 (Call channel)

Channel 16 is the distress and safety channel. It is used for

establishing initial contact with another station and for emer-

gency communications. Channel 16 is monitored during both

Dualwatch and Tri-watch. While standing by, you must moni-

tor Channel 16.

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. 8) and are used to store

your most often used channel in each channel group for quick

recall.

➥ Push [16•9] momentarily to select Channel 16.

➥ Push [CH/WX•DUAL] to return to the condition before select-

ing Channel 16, or push [Y] or [Z] to select an operating

channel.

➥ Push [16•9] for 1 sec. to select the call channel of the se-

lected channel group.

• “CALL” and call channel number appear.

• Each channel group may have an independent call channel after

programming a call channel. (p. 8)

➥ Push [CH/WX•DUAL] to return to the condition before se-

lecting call channel, or push [Y] or [Z] to select an oper-

ating channel.

Push

for 1 sec.

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BASIC OPERATION

U.S.A., international and Canadian channels

Weather channels

The IC-M422 is pre-programmed with 57 U.S.A., 57 interna-

tional and 61 Canadian channels. These channel groups may

be speciﬁed for the operating area.

The IC-M422 has 10 weather channels. These are used for

monitoring broadcasts from NOAA (National Oceanic and At-

mospheric Administration.)

The transceiver can detect a weather alert tone on the se-

lected weather channel while receiving the channel, during

standby on a regular channel or while scanning. (p. 33)

q Push [CH/WX•DUAL] to select a regular channel.

• If a weather channel appears, push [CH/WX•DUAL] again.

w Push both [Y] and [Z] on the transceiver to change the

channel group, if necessary.

• U.S.A., International and Canadian channel groups can be se-

lected in sequence.

e Push [Y] or [Z] to select a channel.

• “DUP” appears for duplex channels.

q Push [CH/WX•DUAL] once or twice to select a weather

channel.

• “WX” appears when a weather channel is selected.

• “WX ALT” appears when the Weather Alert function is in use.

(p. 33)

• “ ” appears when a simplex channel is selected.

Push

once or twice

Scrolls

Appears

When Weather alert is OFF.

Push

and

Scrolls

Appears

When Weather alert is ON.

w Push [Y] or [Z] to select a channel.

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BASIC OPERATION 3

I Receiving and transmitting

CAUTION: Transmitting without an antenna may dam-

Simplex channels, 3, 21, 23, 61, 64, 81, 82 and 83 CAN-

NOT be lawfully used by the general public in U.S.A. wa-

ters.

age the transceiver.

q Push [VOL] for 2 sec. to turn power ON.

w Set the audio and squelch levels.

IMPORTANT: To maximize the readability of your trans-

mitted signal, pause a few sec. after pushing [PTT], hold

the microphone 2 to 4 inches (5 to 10 cm) from your mouth

and speak into the microphone (M) at a normal voice level.

➥ Rotate [SQL] fully counterclockwise in advance.

➥ Rotate [VOL] to adjust the audio output level.

➥ Rotate [SQL] clockwise until the noise disappears.

e To change the channel group, push both [Y] and [Z] on

the transceiver. (p. 6)

r Push [Y] or [Z] to select the desired channel. (pgs. 5, 6)

• When receiving a signal, “

from the speaker.

” appears and audio is emitted

• Further adjustment of [VOL] may be necessary.

t Push [LO/DX•IC] to turn the receive Attenuator function

ON or OFF, if necessary.

• “LOC” appears when the receive Attenuator function is in use.

y Push [HI/LO] to select the output power if necessary.

• “LOW” appears when low power is selected.

• Choose low power for short range communications, choose high

power for longer distance communications.

• Some channels are for low power only.

u Push and hold [PTT] to transmit, then speak into the mi-

crophone (M).

• “

” appears.

• Channel 70 cannot be used for transmission other than DSC.

i Release [PTT] to receive.

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BASIC OPERATION

I Call channel programming

Call channel is used to select Channel 9 (default), however,

you can program the call channel with your most often-used

channels in each channel group for quick recall.

r Push [Y] or [Z] to select

the desired channel.

q Push both [Y] and [Z] on

the transceiver one or more

times to select the desired

channel group (U.S.A., In-

ternational or Canada) to be

programmed.

t Push [16•9] to program the

displayed channel as the

call channel.

• Push [CH/WX•DUAL] to can-

cel.

• The channel number stops

blinking.

w Push [16•9] for 1 sec. to se-

lect the call channel of the

selected channel group.

• “CALL” and call channel num-

ber appear.

e Push [16•9] again for 3 sec.

(until a long beep changes

to 2 short beeps) to enter

the call channel program-

ming condition.

• Channel number starts blink-

ing.

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BASIC OPERATION 3

I Channel comments

I Microphone Lock function

Memory channels can be labeled with alphanumeric com-

ments of up to 10 characters each for easy channel recogni-

tion.

The Microphone Lock function electrically locks [Y]/[Z] and

[HI/LO] keys on the supplied microphone. This prevents ac-

cidental channel changes and function access.

Comments more than 7 characters long automatically scroll

at the channel comment indicator after the channel selection.

➥ While pushing [HI/LO] on the microphone, turn power ON

to toggle the Lock function ON and OFF.

Capital letters, small letters (except f, j, k, p, s, v, x, z), 0 to 9,

some symbols (= M + – . /) and space can be used.

q Select the desired channel.

• Cancel Dualwatch, Tri-watch or Scan in advance.

w While pushing [CH/WX•

[Y]/[Z]

[HI/LO]

DUAL], push [16•9] to edit

the channel comment.

• A cursor and the first char-

acter start blinking alter-

nately.

e Select the desired character by pushing [Y] or [Z].

• Push [CH/WX•DUAL] or [16•9] to move the cursor forward or

backward, respectively.

r Repeat step e to input all characters.

t Push [DSC•POS] to input and set the comment.

• Push [LO/DX•IC] to cancel.

I Display backlight

The function display and keys can be backlit for better visibil-

ity under low light conditions.

Display backlight is also adjustable via the Set mode. (p. 34)

• The cursor and the character stop blinking.

y Repeat steps q to t to program other channel com-

ments, if desired.

➥ While pushing [SCAN•TAG], push [Y] or [Z] to adjust the

brightness of the LCD and key backlight.

• The backlight is adjustable in 7 levels and OFF.

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SCAN OPERATION

I Scan types

Scanning is an efﬁcient way to locate signals quickly over a

wide frequency range. The transceiver has Priority scan and

Normal scan.

Set the TAG channels (scanned channel) before scanning.

Clear the TAG channels which inconveniently stop scanning,

such as those for digital communication use. (Refer to right

page for details.)

When the Weather Alert function is turned ON, the previously

selected (last used) weather channel is also checked while

scanning. (p. 33)

Choose Priority or Normal scan in Set mode. (p. 32)

PRIORITY SCAN

NORMAL SCAN

CH 01

CH 02

CH 01

CH 02

CH 06

CH 03

CH 06

CH 16

CH 03

CH 05

CH 04

CH 05

CH 04

Priority scan searches through all TAG channels in se-

quence while monitoring Channel 16. When a signal is de-

tected on Channel 16, scan pauses until the signal disap-

pears; when a signal is detected on a channel other than

Channel 16, scan becomes Dualwatch until the signal dis-

appears.

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.

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SCAN OPERATION 4

I Setting TAG channels

I Starting a scan

For more efﬁcient scanning, add the desired channels as TAG

channels or clear the TAG for unwanted channels.

Channels that are not tagged will be skipped during scanning.

TAG channels can be assigned to each channel group (USA,

INT, CAN) independently.

Set scan type (Priority or Normal scan) and scan resume

timer in advance, using Set mode. (p. 32)

q Push both [Y] and [Z] to select the desired channel group

(USA, INT, CAN) if desired.

w Set TAG channels as described at left.

q Push both [Y] and [Z] to select the desired channel group

(USA, INT or CAN.)

w Select the desired channel to be set as a TAG channel.

e Push [SCAN•TAG] for 1 sec. to set the displayed channel

as a TAG channel.

e Make sure the squelch is closed to start a scan.

r Push [SCAN•TAG] to start Priority or Normal scan.

• “

ority scan.

• “

scan.

” appears at the channel comment indicator during Pri-

” appears at the channel comment indicator during Normal

• “

” appears in the display.

• When a signal is detected, scan pauses until the signal disap-

pears or resumes after pausing 5 sec. according to Set mode

setting. (Channel 16 is still monitored during Priority scan.)

• Push [Y] or [Z] to check the scanning TAG channels, to change

the scanning direction or resume the scan manually.

• A beep tone sounds and “ ” blinks at the channel comment in-

dicator when a signal is received on Channel 16 during Priority

scan.

r To cancel the TAG channel setting, repeat step e.

• “

” disappears.

✔ Clearing (or setting) all tagged channels

While pushing [HI/LO] on the microphone, push [SCAN•TAG]

for 3 sec. (until a long beep changes to 2 short beeps) to clear

all TAG channels in the channel group.

• Repeat above procedure to set all TAG channels.

t To stop the scan, repeat step r.

Blinks

[Example]: Starting a Normal scan.

When a signal is

received.

Scan starts.

Push

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DUALWATCH/TRI-WATCH

I Description

I Operation

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

is convenient for monitoring Channel 16 when you are oper-

ating on another channel.

q Select Dualwatch or Tri-watch in Set mode. (p. 33)

w Push [Y] or [Z] to select the desired operating channel.

e Push [CH/WX•DUAL] for 1 sec. to start Dualwatch or Tri-

watch.

• “ ” blinks during Dualwatch; “ ” blinks during Tri-watch.

• A beep tone sounds when a signal is received on Channel 16.

r To cancel Dualwatch/Tri-watch, push [CH/WX•DUAL] again.

DUALWATCH/TRI-WATCH SIMULATION

[Example]: Operating Tri-watch on INT Channel 25

Call channel

Tri-watch starts.

Signal is received on call

channel.

Dualwatch

Tri-watch

Signal is received on

• 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].

Channel 16 takes priority.

Tri-watch resumes after

the signal disappears.

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DSC OPERATION

I MMSI code programming

I MMSI code check

The 9-digit MMSI (Maritime Mobile Service Identity: DSC self

ID) code can be programmed at power ON.

The 9-digit MMSI (DSC self ID) code can be checked.

q Push [DSC•POS] to enter the DSC menu.

This function is not available when the MMSI code has

been programmed by the dealer. This code programming

can be performed only twice.

w Push [Y] or [Z] to select “

” and push [DSC•POS].

q Turn power OFF.

w While pushing [DSC•POS], turn power ON to enter MMSI

code programming condition.

e After the display appears, release [DSC•POS].

• A cursor starts blinking.

e Check the 9-digit MMSI (DSC self ID) code.

• The MMSI code is displayed and scrolls at the channel comment

indicator.

r Enter the speciﬁed MMSI code by pushing [Y] or [Z].

• Push [CH/WX•DUAL] or [16•9] to move the cursor forward or

backward, respectively.

MMSI (DSC self ID) code scrolls

t Input 9-digit code, then push [DSC•POS] to set the code.

• Returns to the normal operation.

r Push [DSC•POS] to exit the DSC menu.

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DSC OPERATION

I DSC Address ID

A total of 100 DSC address IDs (9-digit) can be programmed

and named with up to 7 characters.

r Push [Y] or [Z] to set the 9-digit Individual/Group ID.

• Push [CH/WX•DUAL] or [16•9] to move the cursor forward or

backward, respectively.

• Push [LO/DX•IC] to cancel and exit the condition.

D Programming Address ID

1st digit ‘0’ is ﬁxed for a Group ID. When you input 1st digit ‘0’

and other 8 digits, the ID is automatically registered as a

Group ID.

q Push [DSC•POS] to enter the DSC menu.

w Push [Y] or [Z] to select “

,” push [DSC•POS].

e Push [Y] or [Z] to select “

,” push [DSC•POS].

t After entering the 9-digit code, push [DSC•POS] to set up

to a 7-character ID name using [Y] or [Z].

• Push [CH/WX•DUAL] or [16•9] to move the cursor forward or

backward, respectively.

• Push [LO/DX•IC] to cancel and exit the condition.

y Push [DSC•POS] to program and exit the DSC menu.

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DSC OPERATION 6

D Deleting Address ID

q Push [DSC•POS] to enter the DSC menu.

I Position indication

w Push [Y] or [Z] to select “

,” and push [DSC•POS].

When a GPS receiver (NMEA0183 ver. 2.0 or 3.01) is con-

nected, the transceiver displays the current position data in

seconds of accuracy.

A NMEA0183 ver. 2.0 or 3.01 (sentence formatters RMC,

GGA, GNS, GLL) compatible GPS receiver is required. Ask

your dealer about suitable GPS receivers.

e Push [Y] or [Z] to select “

,” push [DSC•POS].

➥ Push [DSC•POS] for 1 sec. to display the current position.

• ‘Latitude’ and ‘Longitude’ scroll in sequence at the channel com-

ment indicator.

• When no address ID is programmed, “ ” is displayed.

• “

” scrolls when no GPS is connected.

Scrolls

r Push [Y] or [Z] to select the desired ID name for deleting

and push [DSC•POS].

• “

” appears.

• When the connected GPS receiver is compatible with

several sentence formatters, the order of input prece-

dence is ‘RMC,’ ‘GGA,’ ‘GNS’ and ‘GLL.’

• “GPS” blinks when the GPS data is invalid.

t Push [DSC•POS] to delete the address ID and exit the

DSC menu.

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DSC OPERATION

I Distress call

A Distress call should be transmitted, if in the opinion of the

Master, the ship or a person is in distress and requires imme-

diate assistance.

Scrolls

NEVER USE THE DISTRESS CALL WHEN YOUR

SHIP OR A PERSON IS NOT IN AN EMERGENCY.

A DISTRESS CALL CAN BE USED ONLY WHEN

IMMEDIATE HELP IS NEEDED.

r After receiving the acknowledgment, reply using the mi-

crophone.

• Channel 16 is automatically selected.

• “

” scrolls at the channel comment indicator.

q Conﬁrm no Distress call is being received.

w While lifting up the key cover, push [DISTRESS] for 5 sec.

to transmit the Distress call.

Scrolls

• Emergency channel (Ch 70) is automatically selected and the

Distress call is transmitted.

• While pushing [DISTRESS], the key backlighting is blinking.

➥ A distress alert contains;

• Kinds of distress: Undesignated distress

• Position data

: Latest GPS position data held for 23.5 hrs.

or until the power is turned OFF.

➥ The Distress call is repeated every 3.5–4.5 min., until re-

ceiving an ‘acknowledgement.’

➥ Push [DISTRESS] to transmit a renewed Distress call,

if desired.

e After transmitting the Distress call, the transceiver waits for

an acknowledgment call on Ch70.

• The Distress call is automatically transmitted every 3.5 to 4.5

minutes.

➥ Push [16•9] to cancel the ‘Call repeat’ mode.

• “

” scrolls at the channel comment indicator.

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DSC OPERATION 6

I Transmitting DSC calls

To ensure correct operation of the DSC function, please

make sure you set the squelch correctly. (P. 7)

r Push [Y] or [Z] to select the desired intership channel,

push [DSC•POS].

• Intership channels are already preset into the transceiver in pre-

ferred order.

D Transmitting an Individual call

The Individual call function allows you to transmit a DSC sig-

nal to a speciﬁc ship only.

• After pushing [DSC•POS], Channel 70 is selected and “

”

appears at the channel comment indicator.

q Push [DSC•POS] to enter the DSC menu.

w Push [Y] or [Z] to select “

,” push [DSC•POS].

Push

Scrolls

e Push [Y] or [Z] to select the desired pre-programmed In-

dividual address, push [DSC•POS].

t Push [DSC•POS] to transmit the Individual call.

• If Channel 70 is busy, the transceiver stands by until the channel

becomes clear.

• The ID code must be set in advance. (p. 13)

• Routine category only is available.

Transmitting

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DSC OPERATION

y Stands by on Channel 70 until an acknowledgement is re-

D Transmitting an Individual acknowledgement

When receiving an Individual call, you can transmit an ac-

knowledgement (‘Able to comply’ or ‘Unable to comply’) by

using the on screen prompts (see page 26 for details). Alter-

natively, you can send an acknowledgement through the

menu system as follows.

ceived.

• “

” scrolls at the channel comment indicator.

Scrolls

q Push [DSC•POS] to enter the DSC menu.

w Push [Y] or [Z] to select “

,” push [DSC•POS].

u When the acknowledgement ‘Able to comply’ is received,

the specified channel (in step r) is selected with beeps

automatically. Or, when the acknowledgement ‘Unable to

comply’ is received, the display returns to the operated

channel (before entering the DSC menu) with beeps.

• “

” item appears after an Individual call is received.

• “

” item disappears if another call is received after the

Individual call.

• The Individual acknowledgement can be transmitted to the last

received Individual call only.

• “

” or “

” scrolls at the channel

comment indicator.

Scrolls

‘Able to comply’ is received.

‘Unable to comply’ is received.

Scrolls

i Push any key to stop the beep, then push and hold [PTT]

to communicate your message to the responding ship.

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DSC OPERATION 6

e Push [Y] or [Z] to select the acknowledgement “

.”

” or

y After the Individual acknowledgement call has been trans-

“

mitted, the speciﬁed channel (speciﬁed by the calling sta-

tion) is selected automatically when “

returns to the previous condition (before entering the DSC

menu) when “ ” is selected in step e.

” is selected, or

• When “

be transmitted.

” is selected, the reason “No Reason Given” will

Scrolls

‘ABLE’ is selected.

r Push [DSC•POS] to enter selected Individual call acknowl-

edgement.

• “

” appears at the channel comment indicator.

t Push [DSC•POS] to transmit the acknowledgement call to

the selected station.

Transmitting

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DSC OPERATION

D Transmitting a Group call

The Group call function allows you to transmit a DSC signal

to a speciﬁc group only.

Push

q Push [DSC•POS] to enter the DSC menu.

w Push [Y] or [Z] to select “

,” push [DSC•POS].

t Push [DSC•POS] to transmit the Group call.

• If Channel 70 is busy, the transceiver stands by until the channel

becomes clear.

e Push [Y] or [Z] to select the desired pre-programmed

Group address, push [DSC•POS].

• Routine category only is available.

• The ID code must be set in advance. (p. 13)

Transmitting

y After the Group call has been transmitted, the specified

channel (in step r) is selected automatically.

r Push [Y] or [Z] to select the desired intership channel,

and push [DSC•POS].

• Intership channels are already preset into the transceiver in pre-

ferred order.

Scrolls

• After pushing [DSC•POS], Channel 70 is selected and “

”

appears at the channel comment indicator.

u Push and hold [PTT] to communicate your message to the

responding ship.

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DSC OPERATION 6

D Transmitting an All Ships call

Large ships use Channel 70 as their ‘listening channel.’

When you want to announce a message to these ships, use

r Push [DSC•POS] to transmit the All Ships call.

• Routine category only is available.

the ‘All Ships call’ function.

q Push [DSC•POS] to enter the DSC menu.

w Push [Y] or [Z] to select “ .”

Transmitting

Scrolls

t After the All Ships call has been transmitted, Channel 16 is

selected automatically.

e Push [DSC•POS] to enter the standby condition for All

Ships call.

• Channel 70 is selected and “

comment indicator.

” appears at the channel

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DSC OPERATION

D Transmitting a Position Request call

Transmit a Position Request call when you want to know a

speciﬁed ship’s current position, etc.

r Push [DSC•POS] to enter the standby condition for Posi-

tion Request call.

• Channel 70 is selected and “

comment indicator.

” appears at the channel

q Push [DSC•POS] to enter the DSC menu.

w Push [Y] or [Z] to select “

,” push [DSC•POS].

Scrolls

t Push [DSC•POS] to transmit the Position Request call.

e Push [Y] or [Z] to select the desired pre-programmed In-

dividual address.

• The ID code must be set in advance. (p. 13)

Transmitting

y After the Position Request call has been transmitted, the

following indication is displayed.

• “

” scrolls at the channel comment indicator.

Scrolls

u Push any key to exit the condition and return to the previ-

ous indication before entering the DSC menu.

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DSC OPERATION 6

D Transmitting a Position Report call

r Push [DSC•POS] to enter the standby condition for Posi-

Transmit a Position Report call when you want to announce

your own position to a speciﬁc ship and to get an answer, etc.

tion Report call.

• Channel 70 is selected and “

comment indicator.

” appears at the channel

q Push [DSC•POS] to enter the DSC menu.

w Push [Y] or [Z] to select “

,” push [DSC•POS].

Scrolls

t Push [DSC•POS] to transmit the Position Report call.

e Push [Y] or [Z] to select the desired pre-programmed In-

dividual address.

• The ID code must be set in advance. (p. 13)

Transmitting

y After the Position Report call has been transmitted, the fol-

lowing indication is displayed.

• “

” scrolls at the channel comment indicator.

Scrolls

u Push any key to exit the condition and return to the previ-

ous indication before entering the DSC menu.

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DSC OPERATION

D Transmitting a Polling Request call

Transmit a Polling Request call when you want to know a

speciﬁc ship is in the communication area, etc.

r Push [DSC•POS] to enter the standby condition for Polling

Request call.

• Channel 70 is selected and “

comment indicator.

” appears at the channel

q Push [DSC•POS] to enter the DSC menu.

w Push [Y] or [Z] to select “

[DSC•POS].

,” push

Scrolls

t Push [DSC•POS] to transmit the Polling Request call.

e Push [Y] or [Z] to select the desired pre-programmed In-

dividual address.

• The ID code must be set in advance. (p. 13)

Transmitting

y After the Polling Request call has been transmitted, the fol-

lowing indication is displayed.

• “

” scrolls at the channel comment indicator.

Scrolls

u Push any key to exit the condition and return to the previ-

ous indication before entering the DSC menu.

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DSC OPERATION 6

D Transmitting a Position Request Reply call

Transmit a Position Request Reply call when a Position Re-

quest call is received.

D Transmitting a Polling Request Reply call

Transmit a Polling Request Reply call when a Polling Request

call is received.

q When a Position Request call is received, “DSC” appears

q When a Polling Request call is received, “DSC” appears

and “

” scrolls at the channel comment in-

and “

” scrolls at the channel com-

dicator.

ment indicator.

Scrolls

w Push [DSC•POS] to reply to the Position Request call;

w Push [DSC•POS] to reply to the Polling Request call; push

push other key to ignore the Position Request call.

other key to ignore the Polling Request call.

D Transmitting a Position Report Reply call

Transmit a Position Report Reply call when a Position Report

call is received.

q When a Position Report call is received, “DSC” appears and

“

” scrolls at the channel comment indicator.

Scrolls

w Push [DSC•POS] to reply to the Position Report call; push

other key to ignore the Position Report call.

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DSC OPERATION

D Receiving a Distress Relay call

While monitoring Channel 70 and a Distress Relay acknowl-

edgement is received:

➥ The emergency alarm sounds for 2 minutes.

• Push any key to stop the alarm.

I Receiving DSC calls

D Receiving a Distress call

While monitoring Channel 70 and a Distress call is received:

➥ The emergency alarm sounds for 2 minutes.

• Push any key to stop the alarm.

➥ “DSC” appears and “

” scrolls at the channel com-

➥ “DSC” appears and “

” scrolls at the channel

ment indicator, then Channel 16 is selected automatically.

comment indicator, then Channel 16 is selected automati-

cally.

Scrolls

➥ Continue monitoring Channel 16 as a coast station may re-

quire assistance.

Scrolls

D Receiving an Individual call

While monitoring Channel 70 and an Individual call is received:

➥ The emergency alarm or beeps sound for 2 minutes de-

pending on the received category.

D Receiving a Distress Acknowledgement

While monitoring Channel 70 and a Distress acknowledge-

ment to other ship is received:

• Push any key to stop the alarm or beeps.

➥ “DSC” appears and “

” scrolls at the chan-

nel comment indicator.

➥ The emergency alarm sounds for 2 minutes.

• Push any key to stop the alarm.

Scrolls

➥ “DSC” appears and “

” scrolls at the

channel comment indicator, then Channel 16 is selected

automatically.

➥ Push [DSC•POS] to reply the call and select the channel

speciﬁed by the calling station for voice communication (de-

pending on your replying condition. See p, 18 for Individual

acknowledgement call procedure for details.); push any

other key to ignore the call.

Scrolls

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DSC OPERATION 6

➥ Push [DSC•POS] to monitor Channel 16 for an announce-

ment from the calling vessel, push any other key to ignore

the call.

D Receiving a Group call

While monitoring Channel 70 and a Group call is received:

➥ The emergency alarm or beeps sound for 2 minutes de-

pending on the received category.

D Receiving a Geographical Area call

While monitoring Channel 70 and a Geographical Area call

(for the area you are in) is received:

• Push any key to stop the alarm or beeps.

➥ “DSC” appears and “

” scrolls at the channel

comment indicator.

➥ The emergency alarm or beeps sound for 2 minutes de-

pending on the received category.

Scrolls

• Push any key to stop the alarm or beeps.

➥ “DSC” appears and “

” scrolls at the

channel comment indicator.

➥ Push [DSC•POS] to select the channel specified by the

calling station for voice communication; push any other key

to ignore the call.

Scrolls

D Receiving an All Ships call

While monitoring Channel 70 and an All Ships call is received:

➥ The emergency alarm sounds for 2 minutes when the cat-

egory is ‘Distress’ or ‘Urgency’; the beeps sound for 2 min-

utes for other categories.

➥ Push [DSC•POS] to select the channel specified by the

calling station for voice communication; push any other key

to ignore the call.

➥ Monitor the selected channel for an announcement from

the calling station.

• Push any key to stop the alarm or beeps.

➥ “DSC” appears and “

” scrolls at the channel

comment indicator.

When no GPS receiver is connected or if there is a prob-

lem with the connected receiver, all Geographical Area

calls are received, regardless of your position.

Scrolls

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DSC OPERATION

D Receiving a Position Request call

While monitoring Channel 70 and a Position Request call is

received:

D Receiving a Polling Request call

While monitoring Channel 70 and a Polling Request call is re-

ceived:

➥ “DSC” appears and “

” scrolls at the chan-

➥ “DSC” appears and “

” scrolls at the

nel comment indicator.

➥ The beeps sound for 2 minutes.

• Push any key to stop the beeps.

channel comment indicator.

➥ The beeps sound for 2 minutes.

• Push any key to stop the beeps.

Scrolls

➥ Push [DSC•POS] to reply to the call; push any other key to

ignore the call.

D Receiving a Position Report call

While monitoring Channel 70 and a Position Report call is re-

ceived:

D Receiving a Position Request Reply call

While monitoring Channel 70 and a Position Request Reply

call is received:

➥ “DSC” appears and “

” scrolls at the chan-

➥ “DSC” and “POS REPLY” appear in the display.

• The ‘Latitude’ and ‘Longitude’ from the called station is displayed

and scrolled at the channel comment indicator in order of Lati-

tude co-ordinates and then Longitude co-ordinates.

nel comment indicator.

➥ The beeps sound for 2 minutes.

• Push any key to stop the beeps.

• “

” scrolls when no GPS is connected.

➥ The beeps sound for 2 minutes.

• Push any key to stop the beeps.

Scrolls

➥ Push [DSC•POS] to reply to the call; push any other key to

ignore the call.

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DSC OPERATION 6

D Receiving a Position Report Reply call

While monitoring Channel 70 and a Position Report Reply call

is received:

➥ “DSC” and “POS REPLY” appear in the display.

• The ‘Latitude’ and ‘Longitude’ you have sent is displayed and

scrolled at the channel comment indicator in order of Latitude

co-ordinates and then Longitude co-ordinates.

• “

” scrolls when no GPS is connected.

➥ The beeps sound for 2 minutes.

• Push any key to stop the beeps.

Scrolls

D Receiving a Polling Request Reply call

While monitoring Channel 70 and a Polling Request reply call

is received:

➥ “DSC” appears and “

” scrolls at the

channel comment indicator.

➥ The beeps sound for 2 minutes.

• Push any key to stop the beeps.

Scrolls

➥ Push [DSC•POS] to reply to the call; push any other key to

ignore the call.

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OTHER FUNCTIONS

I Intercom operation

The optional Intercom function allows you to talk to the deck

from the cabin. The optional HM-157 ^{COMMANDMIC II}™ is

required for Intercom operation.

Connect an optional HM-157 as described on pgs. 35, 52.

• Transmitting is impossible during Intercom operation.

• The received signal is muted during Intercom operation.

IC-M422 (caller)

HM-157 (listener)

r After releasing [PTT] you can hear the response through

the speaker.

t To return to the normal operation, push [LO/DX•IC] mo-

mentarily.

q Push [LO/DX•IC] for 1 sec. to enter Intercom mode.

• The HM-157 power is automatically turned ON, even if the power

is OFF.

• [16•9] and [DISTRESS] keys are also available.

• While in the Intercom mode, the transceiver functions

(transmit and receive) are interrupted. If the transceiver

is in transmit condition, the Intercom function is not avail-

able.

IC-M422

HM-157

• When a DSC call is received, “DSC” appears and the

DSC message is displayed at the channel comment indi-

cator after the Intercom use is ﬁnished.

• When a WX alert is received, “WX ALT” blinks and a

beep sounds. The WX alert sounds after the Intercom

use is ﬁnished.

w Push [LO/DX•IC] for 1 sec. again to call up the HM-157

side.

• The transceiver and the HM-157 emit call beeps.

e Push and hold [PTT] and speak at a normal voice level

into the microphone.

• “

” or “

” appears on the caller or listener function dis-

play, respectively.

• To adjust the IC-M422’s speaker output level, rotate [VOL].

• To adjust the HM-157’s speaker output level, push [Y] or [Z]

DIM

after pushing [VOL•

PA/RX ] on the HM-157.

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OTHER FUNCTIONS 7

I Public Address (PA) function

I RX Speaker function

The IC-M422 has a Public Address function for voice ampliﬁ-

cation, making an announcement on-board via a PA speaker.

The IC-M422 has an RX Speaker function. When this func-

tion is turned ON, the received audio can be heard on the

deck or tower via a PA speaker.

Connect a PA speaker as described on p. 35.

• Transmitting is not possible during Public Address mode.

Connect a PA speaker as described on p. 35.

q Push [PA•RX ] to enter the Public Address mode.

q Push [PA•RX ] for 1 sec. to enter the RX Speaker mode.

• “

” appears

• To adjust the audio output level, push [Y] or [Z] while pushing

[PA•RX ].

w Push and hold [PTT] and speak at a normal voice level

into the microphone.

• “

” or “

” appears at the channel comment indicator

Appears

when [PTT] is pushed or released, respectively.

• To adjust the audio output level, push [Y] or [Z].

e To return to normal operation, push [PA•RX ].

• [16•9] and [DISTRESS] keys are also available.

w To return to normal operation, push [PA•RX ] for 1 sec.

While in the Public Address mode, the transceiver func-

tions (transmit and receive) are interrupted. If the trans-

ceiver is in transmit condition, the Public Address function

is not available.

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SET MODE

I Set mode programming

I Set mode items

Set mode is used to change the conditions of the trans-

ceiver’s functions: Scan type, Scan resume timer, Weather

alert, Dual/Tri-watch, DSC watch, Beep tone, LCD backlight,

LCD contrast, Auto acknowledgement and Radio power.*

Available functions may differ depending on dealer setting.

D Scan type

The transceiver has 2 scan types: Normal scan and Priority

scan. Normal scan searches all TAG channels in the selected

channel group. Priority scan searches all TAG channels in se-

quence while monitoring Channel 16.

q Turn power OFF.

w While pushing [16•9], turn power ON to enter Set mode.

• “

” appears at the channel comment indicator.

e After the display appears, release [16•9].

r Push [16•9] to select the desired item, if necessary.

t Push [Y] or [Z] to select the desired condition of the item.

y Turn power OFF, then ON again to exit Set mode.

Normal scan (default)

Priority scan

Scan resume timer

D SET MODE CONSTRUCTION

The scan resume timer can be selected as a pause (OFF) or

timer scan (ON). When OFF is selected, the scan pauses

until the signal disappears. When ON is selected, the scan

pauses 5 sec. and resumes even if a signal has been re-

ceived on any other channel than Channel 16.

• Radio PWR*

“

• Scan type

• Scan resume timer

”

“

”

“

”

Starting item

• Auto ACK

• Weather alert

“

”

“

”

: Push

• Contrast

“

• Dual/Tri-watch

”

“

”

Scan timer OFF (default)

Scan timer ON

• Backlight

“

• Beep tone

• DSC watch

“

”

“

”

*Available only when optional HM-157 is connected.

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SET MODE 8

Weather alert

DSC watch

A NOAA broadcast station transmits a weather alert tone be-

fore important weather information. When the Weather Alert

function is turned ON, the transceiver detects the alert, then

the “WX ALT” indicator blinks until the transceiver is operated.

The previously selected (used) weather channel is checked

any time during standby or while scanning.

DSC watch monitors Channel 70 while you are receiving an-

other channel.

If a distress signal is received on Channel 70, the transceiver

monitors Channel 16 and 70 alternately until the distress sig-

nal disappears. If a signal is received on another channel,

DSC watch pauses until the signal disappears.

This function may not be available for some channel

groups depending on dealer setting.

• “WX ALT” appears instead of “WX” indication when the function is

set ON.

• “

” scrolls at the channel comment indicator.

Appears

Scrolls

Weather alert OFF (default)

DSC watch OFF (default)

DSC watch ON

Appears

Beep tone

You can select the silent operation by turning beep tones OFF

or you can have conﬁrmation beeps sound at the push of a

key by turning beep tones ON.

Weather alert ON

Dual/Tri-watch

This item can be selected as Dualwatch or Tri-watch. (p. 12)

Beep tone ON (default)

Beep tone OFF

Dualwatch (default)

Tri-watch

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SET MODE

LCD backlight

Automatic acknowledgement

The LCD backlight brightness can be adjusted from OFF, 1

(dark) to 7 (bright.)

LCD backlight is also adjustable via [SCAN•TAG] key. (p. 9)

• “

This item sets the automatic acknowledgement function ON

or OFF. When Position Request, Position Report or Polling

Request call is received, transceiver automatically transmits

the reply call, respectively.

” scrolls at the channel comment indicator.

• “

” scrolls at the channel comment indicator.

Scrolls

LCD backlight level 7 (default)

LCD backlight OFF

Auto acknowledgement

OFF (default)

Auto acknowledgement

LCD contrast

The LCD contrast can be adjustable in 4 levels. 1 is the low-

est contrast, and 4 is the highest contrast.

• “

Radio power

(Available only when optional HM-157 is connected.)

” scrolls at the channel comment indicator.

This item sets the Radio Power function ON or OFF.

• “

” scrolls at the channel comment indicator.

ON : The transceiver’s power is controlled by the HM-157.

When the HM-157 is turned OFF, the transceiver will

also be turned OFF automatically.

OFF : The transceiver’s power is not controlled by the HM-

157. Even if the HM-157 is turned OFF, the transceiver

will continue to work.

Scrolls

LCD contrast level 3 (default)

Scrolls

Radio PWR ON (default)

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Radio PWR OFF

CONNECTIONS AND MAINTENANCE

I Connections

t NMEA OUT LEAD (White)

Connects to a PC or navigation equipment (NMEA0183

ver. 3.01 sentence formatters DSC, DSE compatible) for

plotting position data received from other ships.

y ANTENNA CONNECTOR

Connects a marine VHF antenna with a PL-259 connector

to the transceiver.

CAUTION: Transmitting without an antenna may dam-

age the transceiver.

u EXTERNAL MICROPHONE JACK

Connects to optional HM-157 ^{COMMANDMIC II}™.

CAUTION: After connecting the DC power cable, NMEA

IN/OUT leads, external speaker lead and public address

lead, cover the connector and leads with an adhesive tape

as shown below, to prevent water seeping into the trans-

ceiver.

q DC POWER CONNECTOR

Connects the supplied DC power cable from this connector

to an external 12 V battery.

w EXTERNAL SPEAKER LEAD (Yellow)

Connects to an external speaker.

Rubber vulcanizing

tape

e PUBLIC ADDRESS LEAD (Blue)

Connects to a PA speaker.

• PA output power: 4.5 W (typical) at 10% distortion

with a 4 Ω load

r NMEA IN LEAD (Red)

Connects to a GPS receiver for position indication.

• A NMEA0183 ver. 2.0 or 3.01 (sentence formatters RMC, GGA,

GNS, GLL) compatible GPS receiver is required. Ask your dealer

about suitable GPS receivers.

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CONNECTIONS AND MAINTENANCE

I Supplied accessories

I Mounting the transceiver

Using the supplied mounting bracket

Mounting bracket

For mounting bracket

The universal mounting bracket supplied with your transceiver

allows overhead or dashboard mounting.

Knob bolts

Flat washers (M5)

• Mount the transceiver securely with the 2 supplied screws

(5 × 20) to a surface which is more than 10 mm thick and

can support more than 5 kg.

Screws (5×20)

Spring washers (M5)

• Mount the transceiver so that the face of the transceiver is at

90° to your line of sight when operating it.

Microphone hanger DC power cable

and screws (3×16)

Warning sticker

CAUTION: KEEP the transceiver and microphone at least

1 meter away from your vessel’s magnetic navigation com-

pass.

NOTE: Check the installation angle; the function display

may not be easy-to-read at some angles.

I Antenna

A key element in the performance of any communication sys-

tem is the antenna. Ask your dealer about antennas and the

best place to mount them.

EXAMPLE

Flat washer

Spring washer

I Fuse replacement

One fuse is installed in the supplied DC power cable. If a fuse

blows or the transceiver stops functioning, track down the

source of the problem, if possible, and replace the damaged

fuse with a new one of the proper rating.

Knob bolt

Screw

(5 × 20 mm)

Fuse rating: 10 A

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CONNECTIONS AND MAINTENANCE 9

I Optional MB-69 installation

An optional MB-69 FLUSH MOUNT is available for mounting the

transceiver to a ﬂat surface such as an instrument panel.

e Attach the clamps on either side of the transceiver with 2

supplied bolts (5 × 8 mm).

• Make sure that the clamps align parallel to the transceiver body.

CAUTION: KEEP the transceiver and microphone at least

1 meter away from your vessel’s magnetic navigation com-

pass.

q Using the template on p. 55, carefully cut a hole into the

instrument panel (or wherever you plan to mount the trans-

ceiver.)

w Slide the transceiver through the hole as shown below.

r Tighten the end bolts on the clamps (rotate clockwise) so

that the clamps press firmly against the inside of the in-

strument control panel.

t Tighten the locking nuts (rotate counterclockwise) so that

the transceiver is securely mounted in position as below.

y Connect the antenna and power cable, then return the in-

strument control panel to its original place.

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TROUBLESHOOTING

PROBLEM

POSSIBLE CAUSE

SOLUTION

REF.

p. 35

The transceiver does • Bad connection to the power supply.

not turn ON.

• Check the connection to the transceiver.

No sound from speaker. • Squelch level is too high.

• Volume level is too low.

• Set [SQL] to the threshold point.

• Set [VOL] to a suitable level.

• Drain water from the speaker.

p. 7

• Speaker has been exposed to water.

—

Sensitivity is low.

• The Attenuator is activated.

• Push [LO/DX•IC] to turn the function OFF.

p. 7

Transmitting is impossi- • Some channels are for low power or re- • Change channels.

ble, or high power can ceive only.

pgs. 5,

6, 54

not be selected.

• The output power is set to low.

• Push [HI/LO] on the microphone to select p. 7

high power.

Scan does not start.

No beeps.

• TAG channel is not programmed.

• Set the desired channels as TAG channels. p. 11

• Beep tones are turned OFF.

• The squelch is open.

• Turn the beep tone ON in Set mode.

p. 33

p. 7

• Set [SQL] to the threshold point.

Distress call cannot be • MMSI (DSC self ID) code is not pro- • Program the MMSI (DSC self ID) code.

transmitted. grammed.

p. 13

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SPECIFICATIONS AND OPTIONS

I Speciﬁcations

D General

• Frequency coverage

D Dimensions

: Tx 156.025–157.425 MHz

148 (5 ¹³⁄16)

Rx 156.050–163.275 MHz

FM (16K0G3E), DSC (16K0G2B)

• Mode

• Channel spacing

• Current drain (at 13.8 V)

: 25 kHz

: TX high

Max. audio 1.5 A max.

: 13.8 V DC

5.5 A max.

28.9

(1 ¹

• Power supply requirement

• Frequency stability

125.4 (4 ¹⁵⁄16)

⁄

)

: 10 ppm

(–20°C to +60°C; –4°F to +140°F)

: 164(W) × 78(H) × 139.3(D) mm

6 ¹⁵⁄32(W) × 3 ¹⁄16(H) × 5 ¹⁵⁄32(D) in

: Approx. 1070 g; 2.4 lb

• Dimensions

(Projections not included)

• Weight

D Transmitter

• Output power

• Modulation system

: 25 W/1 W

: Variable reactance frequency

modulation

164 (6 ¹⁵⁄32)

Unit: mm (inch)

• Max. frequency deviation

• Spurious emissions

5.0 kHz

I Options

• MB-69 FLUSH MOUNT KIT

: Less than –70 dBc

D Receiver

• Receive system

: Double conversion

superheterodyne

: 0.22 µV (typical)

: 0.22 µV

For mounting the transceiver to a panel.

• Sensitivity (12 dB SINAD)

• Squelch sensitivity

• Intermodulation rejection ratio

• HM-157 ^{COMMANDMIC II}™

External microphone-type controller. Provides optional inter-

com operation. 6 m (20 feet) microphone cable and mount-

ing base included. Black and white colors are available.

: More than 70 dB

•

Spurious response rejection ratio : More than 70 dB

• Adjacent channel selectivity

• Audio output power

: More than 70 dB

: 4.5 W (typical) at 10% distortion

with a 4 Ω load

• OPC-999 ^{MICROPHONE EXTENSION CABLE}

6 m (20 feet) microphone extension cable for optional HM-

157 ^{COMMANDMIC II}™. Up to 2 OPC-999 can be connected.

(18 m; 60 feet maximum)

All stated speciﬁcations are subject to change without notice or

obligation.

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COMMANDMIC II™ HM-157

I Panel description

The optional HM-157 remotely controls the IC-M422 and pro-

vides an optional Intercom function.

q VOLUME/DIMMER/PA/RX SPEAKER KEY

DIM

[VOL•

PA/RX

]

➥ Push [Y] or [Z] to adjust the audio level after pushing

Front and side keys

DIM

[VOL•

PA/RX ] (p. 45)

➥ Push [Y] or [Z] to adjust the brightness of the LCD and

Top keys (p. 42)

DIM

key backlight after pushing [VOL•

PA/RX ] for

1 sec. (p. 47)

➥ Move the cursor backward while in the channel com-

ment programming condition. (p. 51)

➥ While pushing [H/L], push to turn the Public Address

mode ON or OFF. (p. 50)

➥ While pushing [H/L], push for 1 sec. to turn the RX

Speaker mode ON or OFF. (p. 50)

MONI

w SQUELCH/MONITOR/LOCK KEY [SQL•

Speaker

➥ Push [Y] or [Z] to set the squelch threshold level after

MONI

pushing [SQL•

L]. (p. 45)

➥ Push for 1 sec. to turn the monitor function ON. (p. 47)

MONI

➥ While pushing [H/L], push [SQL•

L] to toggle the

(microphone) Key Lock function ON or OFF. (p. 46)

• “ T ” appears while (microphone) Key Lock function is in use.

• [PWR], [PTT], [VOL], [SQL] and [H/L] still function when the

(microphone) Key Lock function is turned ON.

➥ Advance the cursor while in channel comment pro-

gramming condition. (p. 51)

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^{COMMANDMIC II™ HM-157}12

e ATTENUATOR/INTERCOM/SCRAMBLER KEY

➥ While pushing [CH/WX•

U/I/C], push to enter the

channel comment programming condition. (p. 51)

➥ While turning power ON, push to enter Set mode.

(p. 49)

[LO/DX•

SCR]

➥ Push to toggle the Attenuator function ON or OFF.

(p. 45)

• “LOCAL” appears when the Attenuator function is turned ON.

➥ Push for 1 sec. to activate the Intercom function. (p. 50)

➥ Calls the IC-M422 when pushed and held while in Inter-

com mode. (p. 50)

y CHANNEL UP/DOWN KEYS [Y]/[Z]

➥ Push to select the operating channel, Set mode set-

tings, etc. (pgs. 44, 49)

➥ Push and hold [Y] to move upward through the operat-

ing channels continuously.

➥ Push and hold [Z] to move downward through the op-

erating channels continuously.

NOTE: Voice scrambler is not available for the IC-

M422.

r CHANNEL/DUALWATCH/TRI-WATCH KEY

[CH/WX•

U/I/C]

➥

Push [Y] or [Z] to adjust audio level or noise squelch

➥ Push to select and toggle the regular channels and

DIM

MONI

level after pushing [VOL•

PA/RX ] or [SQL•

L],

weather channels. (p. 44)

respectively. (p. 45)

➥ While pushing [H/L], push to select one of three chan-

nel groups in sequence. (p. 44)

• U.S.A., International and Canadian channels are available.

➥ Push for 1 sec. to start Dualwatch or Tri-watch.

(p. 47)

➥ Push to stop Dualwatch or Tri-watch when either is acti-

vated. (p. 47)

➥ Push [Y] or [Z] to adjust the brightness of the LCD and

DIM

key backlight after pushing [VOL•

PA/RX ] for 1

sec. (p. 47)

➥ Checks TAG channels or changes scanning direction

during scan. (p. 48)

➥ Push [Y] or [Z] to adjust the audio level during in Pub-

lic Address mode. (p. 50)

DIM

➥ While pushing [VOL•

PA/RX ], push [Y] or [Z] to

t CHANNEL 16/CALL CHANNEL KEY [16•9]

➥ Push to select Channel 16. (p. 44)

adjust the audio level during in RX Speaker mode. (p. 50)

➥ Push for 1 sec. to select call channel. (p. 44)

• “CALL” appears when call channel is selected.

➥ Push for 3 sec. to enter call channel programming con-

dition when call channel is selected. (p. 46)

u PTT SWITCH [PTT] (p. 45)

Push and hold to transmit; release to receive.

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12 COMMANDMIC II™ HM-157

Top keys

I Function display

TAG

SCAN

PWR

H/L

q POWER KEY [PWR] (p. 45)

Push for 2 sec. to turn the HM-157 power ON or OFF

when the IC-M422 power is turned ON.

TAG

w SCAN KEY [SCAN•

] (p. 48)

➥ Push to start and stop Normal or Priority scan when

TAG channels are programmed.

➥ Push for 1 sec. to set the displayed channel as a TAG

(scanned) channel.

➥ While pushing [H/L], push for 3 sec. to clear or set all

TAG channels.

q TRANSMIT INDICATOR (p. 45)

e TRANSMIT POWER KEY [H/L]

Appears while transmitting.

➥ Push to toggle high or low power. (p. 45)

• Some Channels are set to low power only.

➥ While pushing this key, other keys perform secondary

functions.

➥ While turning power ON, push to toggle the All key Lock

function ON or OFF. (p. 46)

w BUSY INDICATOR (p. 45)

Appears when receiving a signal or when the squelch

opens.

e TAG CHANNEL INDICATOR (p. 48)

Appears when a TAG channel is selected.

r CALL CHANNEL INDICATOR (p. 46)

• “ T ” blinks while the All key Lock function is in use.

• Only [PWR] and [PTT] are functional when the All key Lock

function is in use.

Appears when call channel is selected.

t LOW POWER INDICATOR (p. 45)

Appears when low power is selected.

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^{COMMANDMIC II™ HM-157}12

y WEATHER CHANNEL INDICATOR (pgs. 33, 44)

➥ “WX” appears when a weather channel is selected.

➥ “WX ALT” appears when the Weather Alert function is

in use; blinks when an alert tone is received.

! KEY LOCK INDICATOR (p. 46)

➥ Appears while the Key Lock function is in use.

➥ Blinks while the All Key Lock function is in use.

! CHANNEL GROUP INDICATOR (p. 44)

Indicates whether an U.S.A. “USA,” International “INT” or

Canadian “CAN” channel is selected.

u DUPLEX INDICATOR (p. 44)

Appears when a duplex channel is selected.

i LOCAL INDICATOR (p. 45)

Appears when the Attenuator function is turned ON.

o CHANNEL COMMENT INDICATOR

➥ Channel comment appears (and scrolls) if programmed.

(p. 51)

➥ “ ” or “ ” blinks during Dualwatch or Tri-watch, re-

spectively. (p. 47)

➥ “

” or “

” appears during Priority or Normal

scan, respectively. (p. 48)

➥ In Set mode, indicates and scrolls the selected item.

(p. 49)

! SQUELCH INDICATOR (p. 45)

Appears while noise squelch level is adjusted.

! VOLUME INDICATOR (p. 45)

Appears while audio output level is adjusted.

! CHANNEL NUMBER READOUT

➥ Indicates the selected operating channel number.

• “ ” appears when a simplex channel is selected. (p. 44)

➥ In Set mode, indicates the selected condition. (p. 49)

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12 COMMANDMIC II™ HM-157

I Channel selection

Channel 16

U.S.A., International and Canadian channels

q Push [16•9] to select Channel

16.

w Push [CH/WX] to return to the

condition before selecting Chan-

nel 16, or push [Y] or [Z] to se-

lect an operating channel.

q Push [CH/WX•

• Push [CH/WX•

w While pushing [H/L], push [CH/WX•

U/I/C] to select a regular channel.

U/I/C] again, if a weather channel appears.

U/I/C] to select a

channel group.

• U.S.A., International and Canadian channels can be selected in

sequence.

e Push [Y] or [Z] to select a channel.

• “DUP” appears for duplex channels.

Push

• “ ” appears when a simplex channel is selected.

Call channel

q Push [16•9] for 1 sec. to select

call channel.

w Push [CH/WX] to return to the

condition before selecting call

channel, or push [Y] or [Z] to

select an operating channel.

U.S.A. channels

Push

for 1 sec.

While pushing

push

Weather channels

q Push [CH/WX] once or twice to

select the weather channel group.

w Push [Y] or [Z] to select a

weather channel.

e Push [CH/WX] to return to the

condition before selecting the

weather channel group.

Push

International channels

Canadian channels

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^{COMMANDMIC II™ HM-157}12

I Receiving and transmitting

q Push [PWR] for 2 sec. to turn power ON.

w Set the audio and squelch levels.

MONI

Simplex channels, 3, 21, 23, 61, 64, 81, 82 and 83 CAN-

NOT be lawfully used by the general public in U.S.A. wa-

ters.

➥ Push [SQL•

pears.

L], then push [Z] until the noise ap-

IMPORTANT: To maximize the readability of your trans-

mitted signal (voice), pause a few sec. after pushing [PTT],

hold the microphone 2 to 4 inches (5 to 10 cm) from your

mouth and speak at a normal voice level.

DIM

➥ Push [VOL•

PA/RX ], then push [Y] or [Z] to ad-

just the audio output level.

MONI

➥ Push [SQL•

L], then push [Y] until the noise dis-

appears.

e To change the channel group, push [CH/WX•

while pushing [H/L]. (p. 44)

U/I/C]

r Push [Y] or [Z] to select the desired channel. (p. 44)

e Select channel

q Turn power ON

• When receiving a signal, “

from the speaker.

” appears and audio is emitted

group

y Set output power

• Further adjustment of the audio level may be necessary.

t Push [LO/DX•

SCR] to turn the receive Attenuator

u Push to

w Set volume

function ON or OFF, if necessary.

transmit

• “LOCAL” appears when the receive Attenuator function is in use.

y Push [H/L] to select the output power if necessary.

• “LOW” appears when low power is selected.

• Choose low power for short range communications, choose high

power for longer distance communications.

• Some channels are for low power only.

u Push and hold [PTT] to transmit, then speak into the mi-

crophone.

i Release

w Set squelch

to receive

t Turn attenuator

function

Microphone

e Select channel

group

w Set volume

and squelch

r Set channel

• “

” appears.

• Channel 70 cannot be used for transmission other than DSC.

i Release [PTT] to receive.

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12 COMMANDMIC II™ HM-157

I Call channel programming

I Lock functions

q While pushing [H/L], push

The Lock function electronically locks keys and switches to

prevent accidental changes and function access from the mi-

crophone.

[CH/WX•

U/I/C] several times

to select the desired channel

group (USA, INT, CAN) to be pro-

grammed.

• All keys, switches and controllers on the transceiver are functional.

Activating the Lock function

w Push [16•9] for 1 sec. to select call

channel of the selected channel

group.

➥ While pushing [H/L], push

MONI

[SQL•

L] to turn the Lock

function ON or OFF.

• “ T ” appears.

• “CALL” and call channel number ap-

pear.

• Only

[PWR],

[PTT],

[H/L],

DIM

MONI

[SQL•

L], [VOL•

PA/RX

L]+[Y]

]

e Push [16•9] again for 3 sec. (until

a long beep changes to 2 short

beeps) to enter the call channel

programming condition.

MONI

+[Y] or [Z] and [SQL•

or [Z] are functional.

Appears

Activating the All Key Lock function

• The channel number and channel

group to be programmed blinks.

➥ While pushing [H/L], turn the

power ON by pushing [PWR] to

turn the All Key Lock function ON

or OFF.

r Push [Y] or [Z] to select the de-

sired channel.

• “ T ” blinks.

• Only [PWR] and [PTT] are func-

tional.

Blinks

t Push [16•9] to program the dis-

played channel as the call chan-

nel.

• The channel number stops blinking.

• Push [CH/WX•

U/I/C] to cancel.

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^{COMMANDMIC II™ HM-157}12

I Display backlight

The function display and keys can be backlit for better visibil-

ity under low light conditions. The backlighting condition can

also be adjusted independently from the transceiver.

I Dualwatch/Tri-watch

operation

q Select Dualwatch or Tri-watch in Set mode. (P. 33)

w Push [Y] or [Z] to select the desired channel.

• While pushing [H/L], push [CH/WX•

U/I/C] several times to

DIM

q Push [VOL•

PA/RX ] for

select the channel group (USA, INT, CAN), if desired.

1 sec. to enter the backlight

adjusting mode.

• “ ” with the number of the

backlight level appears in the

channel comment indicator.

w Push [Y] or [Z] to adjust the

backlight level.

e Push [CH/WX•

U/I/C] for

1 sec. to start Dualwatch or

Tri-watch.

• “ ” or “ ” blinks at the chan-

nel comment indicator during

Dualwatch or Tri-watch, respec-

tively.

Appears

• The backlight is adjustable in 7

levels and OFF.

• A beep tone sounds when a sig-

nal is received on Channel 16.

• Tri-watch becomes Dualwatch

when receiving a signal on the

call channel.

Blinks when the dualwatch

function is in use.

I Monitor function

The monitor function releases the noise squelch mute of the

microphone only. (An independent noise squelch system is

r To cancel Dualwatch or Tri-watch, push [CH/WX•

U/I/C]

again.

employed.)

Blinks

MONI

➥ Push [SQL•

L] for 1 sec.

to activate the Monitor function.

• “

” blinks and audio is

emitted.

• Any key cancels the Monitor

function.

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12 COMMANDMIC II™ HM-157

I Setting TAG channels

I Starting a scan

q While pushing [H/L], push [CH/WX•

U/I/C] several

Set scan type (Priority or Normal scan) and scan resume

timer in advance, using Set mode. (p. 32)

times to select the desired channel group (USA, INT or

CAN).

w Push [Y] or [Z] to select the desired channel to be set as

q While pushing [H/L], push [CH/WX•

U/I/C] several

a TAG channel.

times to select the desired channel group (USA, INT or

TAG

e Push [SCAN•

] for 1 sec. to set the displayed channel

CAN).

as a TAG channel.

w Set TAG channels as described at left.

e Make sure the squelch is closed to start a scan.

TAG

• “

” appears in the display.

r To cancel the TAG channel setting, repeat step e.

r Push [SCAN•

] to start

• “

” disappears.

Priority or Normal scan.

• “

”or “

” appears at

✔ Clearing (or setting) all tagged channels

the channel comment indicator

during Priority or Normal scan,

respectively.

• When a signal is detected, scan

pauses until the signal disap-

pears or resumes after pausing

TAG

While pushing [H/L], push [SCAN•

] for 3 sec. (until a long

beep changes to 2 short beeps) to clear all TAG channels in

the channel group.

• Repeat above procedure to set all TAG channels.

During normal scan.

5 sec. according to the Set mode setting (Channel 16 is still

monitored during Priority scan).

• Push [Y] or [Z] to check the scanning TAG channels, to change

the scanning direction or resume the scan manually.

• “ ” blinks at the channel comment indicator and a beep tone

sounds when a signal is received on Channel 16 during Priority

scan.

t To stop the scan, repeat step r.

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^{COMMANDMIC II™ HM-157}12

I Set mode programming

Set mode is used to change the condition of the transceiver’s

functions and the microphone’s own functions:

• Beep tone

You can select the silent operation

by turning beep tones OFF or you

can have confirmation beeps

sound at the push of a key by turn-

ing beep tones ON.

Transceiver’s functions—

Scan type, Scan resume timer, Weather alert, Dual/Tri-watch,

Beep tone*¹, LCD backlight*¹, LCD contrast*¹and Radio

PWR.

Microphone’s own functions—

• LCD backlight

Beep tone*², LCD backlight*²and LCD contrast*²

*¹For transceiver setting

The LCD backlight brightness can

be adjusted from OFF, 1 (dark) to

7 (bright.)

*²For microphone setting

• “

” scrolls at the channel

In this section, instructions are for the microphone’s own func-

tions only. Refer to pgs. 32 to 34 for the setting of the other

functions. (Some functions cannot be selected from the

HM-157.)

comment indicator.

Scrolls

• LCD contrast

The LCD contrast can be ad-

justable in 4 levels. 1 is the lowest

contrast, and 4 is the highest con-

trast.

Entering Set mode

q Turn power OFF.

w While pushing [16•9], turn power ON.

• After a beep emission, a Set mode item appears at the channel

comment indicator.

• “

” scrolls at the channel

comment indicator.

Scrolls

e After the display appears, release [16•9].

r Push [16•9] to select the desired item, if necessary.

t Push [Y] or [Z] to select the desired condition of the item.

y Turn power OFF, then ON again to exit Set mode.

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12 COMMANDMIC II™ HM-157

I Intercom operation

I Public Address function

q While pushing [H/L], push

Push [LO/DX•

SCR] for 1 sec.

DIM

to activate the Intercom function.

[VOL•

PA/RX ] to enter the

w Push and hold [PTT] to talk.

Public Address mode.

• “

” appears at the channel

w Push and hold [PTT] to talk.

comment indicator.

• “

” appears at the channel

e Release [PTT] to listen.

comment indicator.

e Release [PTT] to listen.

• To adjust the audio output level,

push [Y] or [Z].

r To cancel the Public Address mode, repeat step q.

• Pushing [16•9] also cancels the Intercom function.

• “

” appears at the channel

comment indicator when the trans-

ceiver is in talking mode.

r Push [LO/DX•

SCR] to cancel the Intercom function.

• Pushing [16•9] also cancels the Intercom function.

For your reference:

While in the Public Address mode, the transceiver func-

tions (transmit and receive) are interrupted. If the trans-

ceiver is in transmit condition, the Public Address function

is not available.

In case the Intercom mode is selected with the transceiver

while the microphone power is OFF, the microphone power is

automatically turned ON and the Intercom mode is selected.

I RX Speaker function

Intercom beep function

➥ Push and hold [LO/DX•

SCR] for more than 1 sec.

DIM

q While pushing [H/L], push [VOL•

PA/RX ] for 1 sec.

• Emits the Intercom beep while holding.

to enter the RX Speaker mode.

• “

” scrolls at the channel comment indicator.

• To adjust the audio output level, push [Y] or [Z] while pushing

DIM

[VOL•

PA/RX ].

w To cancel the RX Speaker mode, repeat step q.

• “

” scrolls at the channel comment indicator.

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^{COMMANDMIC II™ HM-157}12

I Channel comments

I HM-157 supplied accessories

q Push [Y] or [Z] to select a channel to program a channel

Accessories included with the HM-157:

Qty.

comment.

• While pushing [H/L], push [CH/WX•

select the channel group (USA, INT, CAN), if desired.

q Connection cable (OPC-1000: 6 m; 20 ft) ...................... 1

w Mounting base ................................................................ 1

e Microphone hanger ........................................................ 1

r Screws (M3 × 16; tapping) ............................................. 5

U/I/C] several times to

w While pushing [CH/WX•

U/I/C], push [16•9].

• A cursor and the ﬁrst character start blinking alternately.

e Select the desired character by pushing [Y] or [Z].

DIM

• Push [SQL] or [VOL•

PA/RX ] to move the cursor forward

or backward, respectively.

r Repeat step e to input all characters.

t Push [16•9] to input and set the comment.

• Push [CH/WX•

U/I/C] to cancel.

• The cursor and the character stop blinking.

y Repeat steps q to t to program other channel com-

ments, if desired.

• Available characters

(=)

(4)

(D)

(N)

(X)

(h)

(r)

(✱)

(5)

(E)

(O)

(Y)

(i)

(+)

(6)

(F)

(P)

(Z)

(j)

( )

(7)

(G)

(Q)

(a)

(k)

(u)

(.)

(8)

(H)

(R)

(b)

(l)

(/)

(9)

(I)

(0)

(1)

(A)

(K)

(U)

(e)

(o)

(y)

(2)

(B)

(L)

(V)

(f)

(3)

(C)

(M)

(space)

(J)

(T)

(d)

(n)

(x)

(S)

(c)

(W)

(g)

(q)

(m)

(w)

(p)

(z)

(s)

(t)

(v)

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12 COMMANDMIC II™ HM-157

I Installation

The optional HM-157 can be connected to the transceiver di-

rectly, as well as via the supplied connection cable for longer

distance remote operation. The connector of the connection

cable can be installed into a cabinet, wall, etc., as a built-in

plug.

w To use the supplied cable as a wall socket, follow the

below steps.

e Using the mounting base, carefully mark off the 2 spots

where the cable and screws will be fastened.

r Drill holes at these marks.

t Install the mounting base using the supplied screws as

shown below.

For longer distance remote operation, the optional extension

cable, OPC-999 (6 m; 20 ft/connecting between transceiver

and the connection cable), is available, and up to 2 OPC-999

can be added.

Mounting base

Nut

q Insert the supplied cable into the external microphone jack

and tighten the cable nut as shown below.

Gasket

Screw holes

(approx. 2 (d) mm; ³32″)

Cap

y The completed installation should look like this.

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^{COMMANDMIC II™ HM-157}12

Mounting base

5 mm; ³⁄16˝

2 mm; ³⁄32˝

Nut

Gasket

Cap

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CHANNEL LIST

Channel number Frequency (MHz)

USA INT CAN Transmit Receive

Channel number Frequency (MHz)

USA INT CAN Transmit Receive

Channel number Frequency (MHz)

USA INT CAN Transmit Receive

01 156.050 160.650

156.050 156.050

19A

19A 156.950 156.950

64A

64A 156.225 156.225

156.275 160.875

83A

83A 157.175 157.175

83b Rx only 161.775

84 157.225 161.825

157.225 157.225

20^*1

01A

157.000 161.600

157.000 157.000

02 156.100 160.700

03 156.150 160.750

156.150 156.150

20A

65A 65A 65A 156.275 156.275

84A

21 157.050 161.650

21A 157.050 157.050

21b Rx only 161.650

157.100 161.700

156.325 160.925

156.325 156.325

66A^*1

03A

21A

22A

66A 66A

67^*2

85 157.275 161.875

157.275 157.275

156.200 160.800

67 156.375 156.375

68 156.425 156.425

69 156.475 156.475

85A

04A 156.200 156.200

156.250 160.850

86 157.325 161.925

157.325 157.325

22A 157.100 157.100

23 157.150 161.750

157.150 157.150

86A

70^*370^*370^*3

05A

05A 156.250 156.250

06 156.300 156.300

156.350 160.950

156.525 156.525

87 157.375 161.975

157.375 157.375

23A

71 156.575 156.575

72 156.625 156.625

73 156.675 156.675

74 156.725 156.725

87A

24 157.200 161.800

25 157.250 161.850

25b Rx only 161.850

26 157.300 161.900

27 157.350 161.950

28 157.400 162.000

28b Rx only 162.000

60 156.025 160.625

156.075 160.675

88 157.425 162.025

157.425 157.425

07A

07A 156.350 156.350

08 156.400 156.400

09 156.450 156.450

10 156.500 156.500

11 156.550 156.550

12 156.600 156.600

88A

77^*1

156.875 156.875

156.925 161.525

Frequency (MHz)

WX channel

Transmit Receive

78A

79A

80A

81A

82A

78A 156.925 156.925

156.975 161.575

RX only

162.550

162.400

162.475

162.425

162.450

162.500

162.525

161.650

161.775

163.275

13^*2

13^*1

14 156.700 156.700

156.750 156.750

156.650 156.650

79A 156.975 156.975

157.025 161.625

15^*215^*115^*1

61A

61A 156.075 156.075

156.125 160.725

80A 157.025 157.025

157.075 161.675

17^*1

16 156.800 156.800

17^*1

156.850 156.850

156.900 161.500

62A 156.125 156.125

156.175 160.775

81A 157.075 157.075

157.125 161.725

18A

18A 156.900 156.900

156.950 161.550

63A

156.175 156.175

82A 157.125 157.125

83 157.175 161.775

64 156.225 160.825

^*1Low power only. ^*2Momentary high power. ^*3DSC operation only

NOTE: Simplex channels, 3, 21, 23, 61, 64, 81, 82 and 83 CANNOT

be lawfully used by the general public in U.S.A. waters.

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TEMPLATE

164 (6 ⁄32)

149 (5 ⁄8)

2 ( ⁄32)

R8 (Max.)

HM-157

MB-69

24 to 27 (d)

( ⁄16 to 1 ⁄16)

Unit: mm (inch)

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MEMO

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A-6431D-1US-r

Printed in Japan

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

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Printed on recycled paper with soy ink.

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