Icom IC-M502A User Manual

INSTRUCTION MANUAL

iM502A

VHF MARINE TRANSCEIVER

FOREWORD

Thank you for purchasing this Icom product. The ICM502A V

HF MARINE TRANSCEIVER

is designed and built with Icom’s state of the art technology and craftsmanship. With proper care, this product should provide you with years of trouble-free operation.

We want to take a couple of moments of your time to thank you for making the IC-M502A your radio of choice, and hope you agree with Icom’s philosophy of “technology ﬁrst.” Many hours of research and development went into the design of your IC-M502A.

FEATURES

❍ Standard 4″×6″ﬂush mount design

❍ Built-in DSC meets RTCM SC101 require-

ment

❍ Rugged waterproof construction

❍ NMEA Input/Output

❍ Optional COMMANDMIC

is connectable

Icom, Icom Inc. and the logo are registered trademarks of Icom Incorporated (Japan) in the United states, the United Kingdom, Germany, France, Spain, Russia and/or other countries. COMMANDMIC is a registered trademark of Icom Incorporated (Japan) in the United states.

IMPORTANT

READ THIS INSTRUCTION MANUAL CAREFULLY before attempting to operate the trans-

ceiver.

SAVE THIS INSTRUCTION MANUAL. This

manual contains important safety and operating instructions for the IC-M502A.

CLEAN THE TRANSCEIVER AND MICROPHONE THOROUGHLY WITH FRESH WATER after exposure to

water including salt water, otherwise, the keys and switches may become inoperable due to salt crystallization.

IN CASE OF EMERGENCY

If your vessel requires assistance, contact other vessels and the Coast Guard by sending a distress call on Ch 16.

Or, transmit your distress call using digital selective calling on Ch 70.

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 9digit DSC ID if you have one).

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

5. The nature of the distress and assistance required.

6. Any other information which might facilitate the rescue.

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 above.

NOTE

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 controls of the radio as in the diagram below. Make sure the chosen location is clean and dry before applying the sticker. (p. 42)

EXAMPLE

iii

Icom requires the radio operator to meet the FCC Requirements for Radio Frequency Exposure. An omnidirectional antenna with gain not greater than 9 dBi must be mounted a minimum

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 requirements. 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.

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 allowable MPE level set by FCC.

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 EXPOSURE 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.

Determining MPE Radius THE MAXIMUM PERMISSIBLE EXPOSURE (MPE) RADIUS 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 MAXIMUM GAIN OF 9dBi ARE USED FOR A SHIP MOUNTED SYSTEM.

RADIO OPERATOR WARNING

WARNING

FOREWORD ............................................. i

IMPORTANT .............................................. i

IN CASE OF EMERGENCY ...................... ii

NOTE ........................................................ ii

RADIO OPERATOR WARNING ............... iii

TABLE OF CONTENTS ........................... iv

PRECAUTION .......................................... v

EXPLICIT DEFINITIONS .......................... v

1 OPERATING RULES .................. 1

2 PANEL DESCRIPTION........... 2 –5

■ Front panel ..................................... 2

■ Function display .............................. 4

■ Microphone...................................... 5

3 BASIC OPERATION ............ 6 – 10

■ Channel selection ........................... 6

■ Receiving and transmitting ............. 8

■ Call channel programming .............. 9

■ Channel comments ......................... 9

■

Optional Voice scrambler operation .. 10

DUALWATCH/TRI-WATCH

......... 11

■ Description .................................... 11

■ Operation ...................................... 11

5 SCAN OPERATION ........... 12 – 13

■ Scan types .................................... 12

■ Setting tag channels ..................... 13

■ Starting a scan .............................. 13

6 DSC OPERATION .............. 14 – 35

■ MMSI code programming ............. 14

■ DSC individual ID ......................... 14

■ Position and Time programming ... 16

■ Position/Time indication ................ 17

■ Distress call .................................. 18

■ Transmitting DSC calls ................. 21

■ Receiving DSC calls ..................... 29

■ Received messages ..................... 32

■ DSC Set mode .............................. 34

7 OTHER FUNCTIONS .......... 36–37

■ Intercom operation ........................ 36

■ Microphone lock function .............. 37

8 SET MODE ........................ 38– 41

■ Set mode programming ................ 38

■ Set mode items ............................. 39

9 CONNECTIONS AND

MAINTENANCE ................. 42– 47

■ Supplied accessories .................... 42

■ Antenna ........................................ 42

■ Fuse replacement ......................... 42

■ Cleaning ....................................... 42

■ Connections .................................. 43

■ Mounting the transceiver .............. 44

■ Optional unit installation ............... 46

■ Dimensions ................................... 47

10 TROUBLESHOOTING .............. 48

11 CHANNEL LIST ........................ 49

12 SPECIFICATIONS AND

OPTIONS ........................... 50 –51

■ Speciﬁcations ............................... 50

■ Options ......................................... 51

13 HM-127 REMOTE-CONTROL

MICROPHONE ................... 52 – 66

■ Panel description .......................... 52

■ Function display ............................ 54

■ Channel selection ......................... 56

■ Receiving and transmitting ........... 57

■ Lock functions ............................... 58

■ Display backlighting ...................... 58

■ Monitor function ............................ 59

■ RF attenuator function .................. 59

■ Call channel programming ............ 59

■

Optional Voice scrambler operation .. 60

■ Dualwatch/Tri-watch operation ..... 60

■ Starting a scan .............................. 61

■ Setting tag channels ..................... 61

■ Set mode programming ................ 62

■ Intercom operation ........................ 63

■ Channel comments ....................... 63

■ HM-127 supplied accessories ...... 64

■ Installation .................................... 65

TEMPLATE

TABLE OF CONTENTS

1 2 3 4 5 6 7 8 9 10 11 12 13

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

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.

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.

EXPLICIT DEFINITIONS

WORD DEFINITION

WARNING

Personal injury, fire hazard or electric shock may occur.

CAUTION Equipment damage may occur.

NOTE

If disregarded, inconvenience only. No risk or personal injury, fire or electric shock.

PRECAUTION

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 traveling 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.

PANEL DESCRIPTION

■ Front panel

WATERPROOF

SCAN

TAG

DSC/ENT

POS

HI/LO

POWER

VOL

iM502

VHF MARINE

SQL

LO/DX

IC SCR

CH/WX

DW U/I/C

916

DISTRESS

Speaker

Function display

qwe r t y u

io!0!1

q VOLUME CONTROL[[

VOL

]

] (p. 8)

Adjusts the audio level.

w POWER KEY[[

POWER

]

Push to turn the transceiver power ON or OFF.

e SQUELCH CONTROL[[

SQL

]

] (p. 8)

Sets the squelch threshold level.

r TRANSMIT POWER KEY[[

HI/LO

]

➥ Toggles power high or low when pushed. (p. 8)

• Some channels are set to low power only.

➥ While pushing this key, some keys perform secondary

functions.

t CHANNEL SELECTOR [[

CHANNEL

]

➥ Rotate [[

CHANNEL

]

] to select the operating channels,

Set mode settings, etc. (pgs. 8, 38)

➥ While pushing [[

HI/LO

]

], rotate [[

CHANNEL

]

] to adjust

the brightness of the LCD and key backlight. (p. 37)

y ATTENUATOR/INTERCOM/SCRAMBLER KEY

[

LO/DX

]

((SCR)

SCR)

➥ Toggles the Attenuator function ON or OFF when

pushed momentarily. (p. 8)

•“LOCAL” appears when the Attenuator is in use. The order of indication precedence is “SP OFF,” “LOCAL” and “CALL.”

➥ Activates an optional Intercom function when pushed for

1 sec. (p. 36)

➥ Calls optional HM-127

REMOTE-CONTROL MICROPHONE

when pushed and held while in Intercom mode. (p. 36)

➥ While pushing [[

HI/LO

]

], activates an optional Voice

scrambler function. (p. 10)

•The optional Voice scrambler function cannot be used on

Channel 16 and 70.

u CHANNEL 16/CALL CHANNEL KEY[[

]

➥ Selects Channel 16 when pushed. (p. 6) ➥ Selects call channel when pushed for 1 sec. (p. 6)

•“CALL” appears when call channel is selected. “SP OFF” and “LOCAL” indications have priority.

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

dition when call channel is selected. (p. 9)

➥ While pushing [[

HI/LO

]

], enters channel comments pro-

gramming condition. (p. 9)

➥ Enters Set mode when pushed while turning power ON.

(p. 38)

i DISTRESS KEY[[

DISTRESS

]

Transmits Distress call when pushed for 5 sec. (p. 18)

o CHANNEL/DUALWATCH/TRI-WATCH KEY

[

CH/WX

]

((U/I/C)

U/I/C)

➥ Selects and toggles the regular channels and weather

channel when pushed momentarily. (p. 7)

➥ While pushing [[

HI/LO

]

], selects one of 3 regular chan-

nels in sequence when pushed. (p. 7)

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

regular channels.

➥ Starts Dualwatch or Tri-watch when pushed for 1 sec.

(p. 11)

➥ Stops Dualwatch or Tri-watch when either is activated.

!0 SCAN KEY[[

SCAN

]

(()

) (p. 13)

➥ Starts and stops Normal or Priority scan when tag

(scanned) channels are programmed.

➥ Push [[

SCAN

]

(()

) for 1 sec. to set or cancel the dis-

played channel as a tag (scanned) channel.

➥ While pushing [[

HI/LO

]

], push for 3 sec. to clear or set

all tag channels.

!1 DSC/POSITION KEY[[

DSC/ENT

]

(()

)

➥ Selects the DSC menu when pushed. (p. 14) ➥ Shows current position and time from a GPS receiver,

etc. when pushed for 1 sec. (p. 17)

POS

TAG

PANEL DESCRIPTION

■ Function display

q BUSY/TRANSMIT INDICATOR (p. 8)

➥ “BUSY” appears when receiving a signal or when the

squelch opens.

➥ “TX” appears while transmitting.

w POWER INDICATOR (p. 8)

➥ “25W” appears when high power is selected. ➥ “1W” appears when low power is selected.

e TAG CHANNEL INDICATOR (p. 13)

Appears when a tag channel is selected.

r CHANNEL COMMENT INDICATOR

➥ Channel comment appears if programmed. (p. 9) ➥ “Low Battery” blinks when the battery voltage

drops to approx. 10 V DC or below.

➥ “DUAL” appears during Dualwatch; “TRI” appears dur-

ing Tri-watch. (p. 11)

t SCRAMBLER INDICATOR (p. 10)

Appears when an optional Voice scrambler is activated.

INT

CALL

BUSY 25W TAG SC DUP CALLING

tuy

PANEL DESCRIPTION

y DUPLEX INDICATOR (p. 7)

Appears when a duplex channel is selected.

• Duplex channel has a different TX and RX frequency.

u CHANNEL NUMBER READOUT

➥ Indicates the selected operating channel number.

“A” appears when a simplex channel is selected. “b” appears when a receive only channel for a Canadian channel group is selected. (p. 7)

➥ In Set mode, indicates the selected condition. (p. 38)

i CHANNEL GROUP INDICATOR (p. 7)

Indicates whether an International “INT,” U.S.A. “USA,” Canadian “CAN” or weather “WEATHER” channel is selected.

o CALL CHANNEL INDICATOR

➥ “CALL” appears when call channel is selected. (p. 6) ➥ “SP OFF” appears when the internal speaker is turned

OFF in Set mode. (p. 40)

➥ “LOCAL” appears when the Attenuator is in use. (p. 8)

•The order of indication precedence is “SP OFF,” “LOCAL” and “CALL.”

■ Microphone

q PTT SWITCH [[

PTT

]

] (p. 8)

Push and hold to transmit; release to receive.

w CHANNEL UP/DOWN KEYS [[

]

[

]

] (pgs. 8, 38)

Push either key to change the operating channel, Set mode settings, etc.

e CHANNEL 16/CALL CHANNEL KEY[[

16/9

]

➥ Push to select Channel 16; push for 1 sec. to select call

channel (default is Channel 9). (p. 6)

➥ While pushing [[

16/9

]

], turn power ON to toggle the Lock

function ON or OFF. (p. 37)

Speaker

Microphone

BASIC OPERATION

■ 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 [[

]

] momentarily to select Channel 16.

➥ Push [[

CH/WX

]

] to return to the condition before selecting

Channel 16, or rotate [[

CHANNEL

]

] to select an operating

channel.

Channel 9 (Call channel)

Each regular channel group has a separate leisure-use call channel. Call channel is monitored during Tri-watch. Call channels can be programmed (p. 9) and are used to store your most often used channels in each channel group for quick recall. ➥ Push [[

]

] for 1 sec. to select call channel of the selected

channel group.

•“CALL” and call channel number appear.

• Each channel group may have an independent call channel after programming a call channel.

➥ Push [[

CH/WX

]

] to return to the condition before selecting

call channel

, or rotate

[

CHANNEL

]

] to select an operating

channel.

Convenient: Using microphone

➥ Push [[

16/9

]

] momentarily to select Channel 16.

➥ Push [[

16/9

]

] for 1 sec. to select call channel.

➥ Push [[

]

[

]

] to select any other operating channel.

Push for 1 sec.

INT 25W CALL TAG CALLING

916

INT 25W TAG CALLING

Push

916

BASIC OPERATION

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

]

((U/I/C)

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

• If a weather channel appears, push [[

CH/WX

]

((U/I/C)

U/I/C) again.

w While pushing [[

HI/LO

]

], push [[

CH/WX

]

((U/I/C)

U/I/C) to

change the channel group, if necessary.

•U.S.A., International (INT) and Canadian channels can be selected in sequence.

e Rotate [[

CHANNEL

]

] to select a channel.

•“DUP” appears for duplex channels.

•“A” appears when a simplex channel is selected. “b” appears when a receive only channel for a Canadian channel group is selected.

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 that channel, during standby on a regular channel or while scanning. See “Weather alert” on p. 39. 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. 39)

w Rotate [[

CHANNEL

]

] to select a channel.

Push once or twice

When Weather alert is OFF.

WEATHER

When Weather alert is ON.

WXALT

CH/WX

DW U/I/C

Push +

U.S.A. channels

HI/LO

CH/WX

DW U/I/C

Canadian channels

CAN

International channels

INT

DUP

USA

■ Receiving and transmitting

CAUTION: Transmitting without an antenna may dam-

age the transceiver.

q Push [[

POWER

]

] 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 To change the channel group, push [[

CH/WX

]

((U/I/C)

U/I/C)

while pushing [[

HI/LO

]

]. (p. 7)

r Rotate [[

CHANNEL

]

] or push [[

]

[

]

] on the microphone

to select the desired channel.

• When receiving a signal, “BUSY” appears and audio is emitted

from the speaker.

• Further adjustment of [[

VOL

]

] may be necessary.

• Use the optional Voice scrambler function for privacy. (p. 10)

t Push [[

LO/DX

]

] to turn the receive Attenuator function ON

or OFF, if necessary.

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

y Push [[

HI/LO

]

] to select the output power, if necessary.

•“25W” or “1W” appears when high or low power is selected, re-

spectively.

• Choose low power for short range communications, choose high power for longer distance communications.

• Some channels are for selecting low power only.

u Push and hold [[

PTT

]

] to transmit, then speak into ∗(Mi-

crophone).

•“TX” appears.

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

Simplex channels, 3, 21, 23, 61, 64, 81, 82 and 83 CANNOT be lawfully used by the general public in U.S.A. waters.

i Release [[

PTT

]

] to receive.

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

∗

(Microphone) at a normal voice level.

WATERPROOF

SCAN

TAG

DSC/ENT

POS

HI/LO

POWER

VOL

iM502

VHF MARINE

SQL

LO/DX

IC SCR

CH/WX

DWU/I/C

916

DISTRESS

∗

(Microphone)

rrt

yui

BASIC OPERATION

■ 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.

q While pushing [[

HI/LO

]

], push [[

CH/WX

]

((U/I/C)

U/I/C) one or

more times to select the desired channel group (U.S.A., International, Canada) to be programmed.

w Push [[

]

] for 1 sec. to select call channel of the se-

lected channel group.

•“CALL” and call channel number appear.

• The order of indication precedence is “SP OFF,” “LOCAL” and “CALL.”

Push [[

]

] again for 3 sec.

(until a long beep changes to 2 short beeps) to enter call channel programming condition.

• Channel number starts blinking.

r Rotate [[

CHANNEL

]

] to se-

lect the desired channel.

t Push [[

]

] to program the

displayed channel as call channel.

• Push [[

CH/WX

]

((U/I/C)

U/I/C) to cancel.

• The channel number stops blinking.

■ Channel comments

Memory channels can be labeled with alphanumeric comments of up to 10 characters each.

Capital letters, small letters, numerals, some symbols (! " # $ % & ' ( ) * + , - ./ =) and space can be used.

q Select the desired channel.

• Cancel dualwatch, Tri-watch or scan in advance.

w While pushing [[

HI/LO

]

], push [[

]

] to edit the channel

comment.

• A cursor appears and blinks.

e Select the desired character by rotating [[

CHANNEL

]

] or

by pushing [[

]

[

]

] on the microphone.

• Push [[

CH/WX

]

] or [[

SCAN

]

] to move the cursor forward or back-

ward, respectively.

r Push [[

]

] to input and set the comment.

• Push [[

HI/LO

]

] to cancel.

• The cursor disappears.

t Repeat steps q to r to program the other channels, if de-

sired.

INT 25W TAG äLEASURE

INT

25W CALL TAG CALLING

INT

25W CALL

DUPTAG

INTL

BASIC OPERATION

■ Optional Voice scrambler operation

Activating the Scrambler

The optional Voice scrambler provides private communications. In order to receive or send scrambled transmissions you must ﬁrst activate the Scrambler function. To activate the function, an optional UT-98 or UT-112 is necessary. See p. 41 for setting the scrambler unit. Ask your dealer for details.

The Scrambler function automatically turns OFF when

Channel 16 or 70 is selected.

Select an operating channel other than Channel 16 or 70.

w While pushing [[

HI/LO

]

], push [[

LO/DX

]

((SCR)

SCR) to turn

the optional Scrambler function ON.

•“SC” appears.

e To turn the Scrambler function OFF, repeat step w.

•“SC” disappears.

Programming scrambler codes

There are 128 or 32 codes (0 to 127 or 1 to 32) available for programming when the optional UT-98 or UT-112 is installed. In order to understand one another, all transceivers in your group must have the same scramble code. This function may not be available depending on dealer setting.

q Turn power OFF. w While pushing [[

]

], turn power ON to enter Set mode.

e After the display appears, release [[

]

r Push [[

]

] one or more times to select the scrambler

code.

•“Scrambler Code” appears.

t Rotate [[

CHANNEL

]

] to select the desired scrambler code.

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

SetMode

Beep

SetMode

Scrambler Code

SetMode

Scrambler Code

Enter Set mode Turn OFF

POWER POWER

916 916

Select code

Push one or more times.

Set mode Scrambler code item

[Example]: Programming scrambler code 8.

DUALWATCH/TRI-WATCH

■ Description

Dualwatch monitors Channel 16 while you are receiving another channel; Tri-watch monitors Channel 16 and call channel while receiving another channel.

■ Operation

q Select Dualwatch or Tri-watch in Set mode. (p. 39) w Select the desired operating channel. e Push [[

CH/WX

]

((U/I/C)

U/I/C) for 1 sec. to start Dualwatch or

Tri-watch.

•“DUAL” appears during Dualwatch; “TRI” appears during Tri-

watch.

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

To cancel Dualwatch or Tri-watch, push [[

CH/WX

]

((U/I/C)

U/I/C)

again.

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

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 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

]

Dualwatch Tri-watch

Call channel

25W TAG TRI

BUSY INT 25W CALL TAG TRI

BUSY INT 25W TAG TRI

25W TAG TRI

INT

DUP 16

16

DUP 16

INT

DUP 16

Tri-watch starts.

Signal is received on call channel.

Signal received on Channel 16 takes priority.

Tri-watch resumes after the signal disappears.

SCAN OPERATION

■ 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. 39)

Set the tag channels (scanned channel) before scanning. Clear the tag channels which inconveniently stop scanning, such as those for digital communication use.

Choose Priority or Normal scan in Set mode. (p. 39)

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.

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

SCAN OPERATION

INT

25W

DUPTAG

INTL

INT

25W

DUPTAG

Normalscan

BUSY INT 25W

DUPTAG

Normalscan

SCAN

TAG

Push

Scan starts. When a signal is received

[Example]: Starting a Normal scan.

■ Setting tag channels

For more efficient scanning, add desired channels as tag channels or clear tag channels for unwanted channels. Channels not tagged will be skipped during scanning. Tag channels can be assigned to each channel group (U.S.A., International, Canada) independently.

q While pushing [[

HI/LO

]

], push [[

CH/WX

]

((U/I/C)

U/I/C) one or

more times to select the desired channel group.

w Select the desired channel to be set as a tag channel. e Push [[

SCAN

]

(()

) for 1 sec. to set the displayed channel

as a tag channel.

•“TAG” appears in the display.

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

•“TAG” disappears.

Convenient: Clearing (setting) all tagged channels

➥ While pushing [[

HI/LO

]

], push [[

SCAN

]

(()

) for 3 sec. (until

a long beep changes to 2 short beeps) to clear all tag channels setting in the channel group.

• Repeat above procedure to set all tag channels.

■ Starting a scan

Set scan type (Priority or Normal scan) and scan resume timer in advance using Set mode. (p. 39)

q Set tag channels as described at left. w Make sure the squelch is closed to start a scan. e While pushing [[

HI/LO

]

], push [[

CH/WX

]

((U/I/C)

U/I/C) one or

more times to select the channel group, if desired.

Push [[

SCAN

]

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 [[

CHANNEL

]

] to check the scanning tag channels, to

change the scanning direction or resume the scan manually.

•“16” blinks and a beep tone sounds when a signal is received on Channel 16 during Priority scan.

t To stop the scan, push [[

SCAN

]

TAG

DSC OPERATION

■ MMSI code programming

The 9-digit MMSI (Maritime Mobile Service Identity: DSC self ID) code can be programmed at power ON.

This function is not available when the MMSI code has

been programmed by the dealer. This code programming can be performed only twice.

q Turn power OFF. w While pushing [[

DSC/ENT

]

], turn power ON to enter MMSI

code programming condition.

e After the display appears, release [[

DSC/ENT

]

r Edit the speciﬁc MMSI code by rotating [[

CHANNEL

]

• Push [[

CH/WX

]

] or [[

SCAN

]

] to move the cursor forward or back-

ward, respectively.

t Input the 9 digit codes, then push [[

DSC/ENT

]

] to set the

code.

• Returns to the normal operation.

■ DSC individual ID

A total of 40 DSC address IDs can be programmed and named with up to 10 characters.

Programming Address ID/Group ID

q Push [[

DSC/ENT

]

] to enter the DSC menu.

w Rotate [[

CHANNEL

]

] to select “Set up,” push

[

DSC/ENT

]

Rotate [[

CHANNEL

]

to select “Add ID,” push

[

DSC/ENT

]

Setup ˘AddID DeleteID OffsetTime

SelItem POSReport DTRSSet ˘Setup

SetMMSI

ä23456789

DSC OPERATION

r Set the individual ID and ID name.

• Edit the 9 digits of the appropriate distress ID by using [[

CHAN

CHAN--

NEL

]

-Push [[

CH/WX

]

] or [[

SCAN

]

] to move the cursor forward or

backward, respectively.

1st digit ‘0’ is fixed for a group ID. Thus an address ID input

cannot start with ‘0.’ When you input 1st digit ‘0’ and other 8

digits, the ID is automatically registered as a group ID.

t Push [[

DSC/ENT

]

] to program and exit the condition to the

normal operation.

Deleting Address ID/Group ID

q Push [[

DSC/ENT

]

] to enter the DSC menu.

w Rotate [[

CHANNEL

]

] to select “Set up,” push

[

DSC/ENT

]

e Rotate [[

CHANNEL

]

] to select “Delete ID,” push

[

DSC/ENT

]

•When no address ID is programmed, the transceiver exits the DSC menu automatically.

r Rotate [[

CHANNEL

]

] to select the desired ID name for

deleting.

t The delete confirmation display will appear when

[

DSC/ENT

]

] is pushed.

• Push [[

HI/LO

]

] to delete ID and exit the DSC Menu.

• Push [[

DSC/ENT

]

] to cancel deleting and exit the DSC Menu.

DeleteID

Ricky

˘Bill

Tom

Setup AddID ˘DeleteID OffsetTime

AddID ID: NAME:

DSC OPERATION

■

Position and Time programming

A distress call should include the ship’s position and time. If no GPS is connected, your position and UTC (Universal Time Coordinated) time should be input manually. They are included automatically when a GPS receiver (NMEA0183 ver.

2.0 or 3.01) is connected.

This manual programming is not available when a GPS re-

ceiver (NMEA0183 ver. 2.0 or 3.01) is connected.

q Push [[

DSC/ENT

]

] to enter the DSC menu.

“POS Input” is selected automatically, push [[

DSC/ENT

]

e Edit the digit of your latitude data by using [[

CHANNEL

]

• Push [[

CH/WX

]

] or [[

SCAN

]

] to move the cursor forward or back-

ward, respectively.

• After editing latitude data, select “N”; North latitude or “S”; South

latitude.

• Push [[

HI/LO

]

] to clear the position data.

Edit the digit of your longitude data by using [[

CHANNEL

]

• Push [[

CH/WX

]

] or [[

SCAN

]

] for cursor movement.

•After editing longitude data, select “E”; East longitude or “W”;

West longitude.

• Push [[

HI/LO

]

] to clear the position data.

t Push [[

DSC/ENT

]

] to set the position and advance to the

time setting condition.

•Push [[

]

] or [[

LO/DX

]

] to abandon the setting and exit the

DSC menu.

y Edit the digit of the current UTC time by using [[

CHAN

CHAN--

NEL

]

• Push [[

CH/WX

]

] or [[

SCAN

]

] for cursor movement.

• Push [[

HI/LO

]

] to clear the time data.

u Push [[

DSC/ENT

]

] to set the time, and exit the DSC menu.

•Push [[

]

] or [[

LO/DX

]

] to abandon the setting and exit the

DSC menu.

Inputtime UTC:

Null˘[H/L]

InputPOS °.

-°.

Null˘[H/L]

DSC OPERATION

■ Position/Time indication

When a GPS receiver (NMEA0183 ver. 2.0 or 3.01) is connected, the transceiver displays the current position and time. When no GPS receiver is connected, the transceiver displays the manually entered position and time.

A GPS receiver appropriate for the IC-M502A is not supplied from Icom. A GPS receiver with NMEA0183 ver. 2.0 or 3.01 format is required for position indication. Ask your dealer about suitable GPS receivers.

➥ Push [[

DSC/ENT

]

(()

) for 1 sec. to display the current po-

sition and time.

•“MNL” (manual) appears instead of the “GPS” indication when

no GPS is connected and the position/time data is entered manually.

➥ When connecting GPS receiver is compatible several

sentence formatteres, the order of input precedence is ‘RMC,’ ‘GGA,’ ‘GNS’ and ‘GLL.’

➥ When sentence formatter ‘RMC’ is received, time indi-

cation includes a date, and UTC time only.

➥ “??” may blink instead of position and time indications

when the GPS data is invalid, or has not been manually updated after 4 hours.

34°34.123N 135°34.123E JUL1711:47 CALLING

34°34.123N 135°34.123E GPSUTC11:47 CALLING

34°34.123N 135°34.123E GPSLOC01:47 CALLING

• Sentence formatter ‘RMC’

• Sentence formatteres ‘GGA,’ ‘GNS,’ ‘GLL’

No offset time

Offset time is –10 hours. (p.34)

34°34.123N 135°34.123E GPSUTC12:34 CALLING

POS

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