63 BASIC OPERATION Channel selectionDD Channel 16Channel 16 is the distress and safety channel. It is used forestablishing initial contact with another station and for emer-gency communications. Channel 16 is monitored during bothDualwatch and Tri-watch. While standing by, you must moni-tor Channel 16.➥ Push [[ 99]] momentarily to select Channel 16.➥ Push [[CH/WXCH/WX]] to return to the condition before selectingChannel 16, or rotate [[CHANNELCHANNEL]] to select an operatingchannel.DD Channel 9 (Call channel)Each regular channel group has a separate leisure-use callchannel. Call channel is monitored during Tri-watch. Callchannels can be programmed (p. 9) and are used to storeyour most often used channels in each channel group forquick recall.➥ Push [[ 99]] for 1 sec. to select call channel of the selectedchannel group.• “CALL” and call channel number appear.• Each channel group may have an independent call channel afterprogramming a call channel.➥ Push [[CH/WXCH/WX]] to return to the condition before selectingcall channel , or rotate [[CHANNELCHANNEL]] to select an operatingchannel.Convenient: Using microphone➥ Push [[16/916/9]] momentarily to select Channel 16.➥ Push [[16/916/9]] for 1 sec. to select call channel.➥ Push [[ YYYY]]/[[ ZZZZ]] to select any other operating channel.Push for1 sec.INT25W CALLTAGCALLING9161616INT25WTAGCALLINGPush 9161616

OPERATING RULES

I Front panel

panel description 2

I Function display

PANEL DESCRIPTION........... 2

I Channel selection

basic operation

I Receiving and transmitting

I Call channel programming

BASIC OPERATION ............ 6

DUALWATCH/TRI-WATCH

I Scan types

I Setting tag channels

I MMSI code programming

dsc operation

I Position and Time programming

I Position/Time indication

I Distress call

I Transmitting DSC calls

I Receiving DSC calls

I Received messages

dsc set mode

I Intercom operation

I Microphone lock function

I Set mode programming

I Set mode items

set mode

I Supplied accessories

I Connections

I Mounting the transceiver

I Optional unit installation

I Dimensions

troubleshooting

CHANNEL LIST

SPECIFICATIONS AND 5

I Options

I Panel description

I Lock functions

I RF attenuator function

I Dualwatch/Tri-watch operation

I Starting a scan

I Channel comments

I HM-127 supplied accessories

I Installation

Icom IC-M502A Instruction Manual

IC-M502A