Icom IM422 Receiving DSC calls

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6DSC OPERATION

■Receiving DSC calls

DReceiving 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

comment indicator, then Channel 16 is selected automati-

cally.

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

quire assistance.

DReceiving a Distress Acknowledgement

While monitoring Channel 70 and a Distress acknowledge-

ment to other ship is received:

➥The emergency alarm sounds for 2 minutes.

•Push any key to stop the alarm.

➥“DSC” appears and “ ” scrolls at the

channel comment indicator, then Channel 16 is selected

automatically.

DReceiving 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.

➥“DSC” appears and “ ” scrolls at the channel com-

ment indicator, then Channel 16 is selected automatically.

DReceiving 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.

•Push any key to stop the alarm or beeps.

➥“DSC” appears and “ ” scrolls at the chan-

nel comment indicator.

➥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.

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Contents

Main FOREWORD D FEATURES IMPORTANT READ ALL INSTRUCTIONS IN CASE OF EMERGENCY NOTE USING DIGITALSELECTIVE CALLING DISTRESS CALL PROCEDURE USING CHANNEL 16 DISTRESS CALL PROCEDURE RADIO OPERATOR WARNING TABLE OF CONTENTS iv PRECAUTIONS OPERATING RULES DDPRIORITIES DDPRIVACY DDRADIO LICENSES Radio license for boaters (U.S.A. only) PANEL DESCRIPTION Front panel PANELDESCRIPTION Microphone 2 Function display BASIC OPERATION Channel selection Channel 16 Channel 9 (Call channel) 3 U.S.A., international and Canadian channels Weather channels Receiving and transmitting CAUTION: 3 Call channel programming Channel comments Microphone Lock function Display backlight SCAN OPERATION Scan types SCAN OPERATION Setting TAG channels Starting a scan DUALWATCH/TRI-WATCH Description Operation Dualwatch Tri-watch DSC OPERATION MMSI code programming MMSI code check DSC Address ID DProgramming Address ID DDeleting Address ID Position indication Distress call Transmitting DSC calls DTransmitting an Individual call DTransmitting an Individual acknowledgement Page DTransmitting a Group call DTransmitting an All Ships call DTransmitting a Position Request call DTransmitting a Position Report call DTransmitting a Polling Request call DTransmitting a Position Request Reply call DTransmitting a Position Report Reply call DTransmitting a Polling Request Reply call Receiving DSC calls DReceiving a Distress call DReceiving a Distress Acknowledgement DReceiving a Distress Relay call DReceiving an Individual call DReceiving a Group call DReceiving an All Ships call DReceiving a Geographical Area call DReceiving a Position Request call DReceiving a Position Report call DReceiving a Polling Request call DReceiving a Position Request Reply call DReceiving a Position Report Reply call DReceiving a Polling Request Reply call OTHER FUNCTIONS Intercom operation OTHER FUNCTIONS Public Address (PA) function RX Speaker function SET MODE Set mode programming Set mode items DScan type DDScan resume timer SET MODE DDWeather alert DDDual/Tri-watch DDDSC watch DDBeep tone 8 DDLCD backlight DDLCD contrast DDAutomatic acknowledgement DDRadio power CONNECTIONS AND MAINTENANCE Connections 9 Supplied accessories Antenna Fuse replacement Mounting the transceiver Optional MB-69 installation TROUBLESHOOTING SPECIFICATIONS AND OPTIONS Specications Options COMMANDMIC IIHM-157 Panel description DDFront and side keys Page DDTop keys Function display Page Channel selection DDChannel 16 DDCall channel DDWeather channels DDU.S.A., International and Canadian channels Receiving and transmitting Call channel programming Lock functions DDActivating the Lock function DDActivating the All Key Lock function Display backlight Monitor function Dualwatch/Tri-watch operation Setting TAG channels Starting a scan Set mode programming DDEntering Set mode Intercom operation DDIntercom beep function Public Address function RX Speaker function 51 Channel comments qPush [YY]or [ZZ]to select a channel to program a channel comment. wWhile pushing [CH/WX U/I/C], push [169]. A cursor and the rst character start blinking alternately. eSelect the desired character by pushing [Y]or [Z]. Installation Page CHANNEL LIST DSC operation only Low power only. Momentary high power. TEMPLATE