Icom iM304

iv
FOREWORD …………………………………………………………… i
IMPORTANT …………………………………………………………… i
EXPLICIT DEFINITIONS ……………………………………………… i
IN CASE OF EMERGENCY…………………………………………… ii
NOTE …………………………………………………………………… ii
RADIO OPERATOR WARNING ……………………………………… iii
TABLE OF CONTENTS ……………………………………………… iv
PRECAUTIONS ………………………………………………………… v
1 OPERATING RULES ……………………………………………… 1
2 PANEL DESCRIPTION ………………………………………… 2–4
■ Front panel ……………………………………………………… 2
■ Microphone ……………………………………………………… 3
■ Function display ………………………………………………… 4
3 BASIC OPERATION …………………………………………… 5–9
■ Channel selection ……………………………………………… 5
■ Receiving and transmitting ……………………………………… 7
■ Call channel programming ……………………………………… 8
■ Channel comments ……………………………………………… 8
■ Microphone lock function ……………………………………… 9
■ Display backlighting……………………………………………… 9
■ AquaQuake water draining function …………………………… 9
4 SCAN OPERATION ………………………………………… 10–11
■ Scan types ……………………………………………………… 10
■ Setting TAG channels ………………………………………… 11
■ Starting a scan ………………………………………………… 11
5 DUALWATCH/TRI-WATCH ……………………………………… 12
■ Description ……………………………………………………… 12
■ Operation ……………………………………………………… 12
6 DSC OPERATION …………………………………………… 13–27
■ MMSI code programming ……………………………………… 13
■ MMSI code check ……………………………………………… 13
■ DSC address ID ………………………………………………… 14
■ Position indication ……………………………………………… 15
■ Distress call …………………………………………………… 16
■ Transmitting DSC calls ………………………………………… 17
■ Receiving DSC calls …………………………………………… 24
7 SET MODE …………………………………………………… 28–30
■ Set mode programming ……………………………………… 28
■ Set mode items ………………………………………………… 29
8 CONNECTIONS AND MAINTENANCE …………………… 31–34
■ Connections …………………………………………………… 31
■ Supplied accessories ………………………………………… 32
■ Antenna ………………………………………………………… 32
■ Fuse replacement ……………………………………………… 32
■ Cleaning ………………………………………………………… 32
■ Mounting the transceiver ……………………………………… 33
■ Optional MB-92 attachment …………………………………… 33
■ Optional MB-69 installation …………………………………… 34
9 TROUBLESHOOTING …………………………………………… 35
10 CHANNEL LIST…………………………………………………… 36
11 SPECIFICATIONS AND OPTIONS ……………………… 37–38
■ Specifications …………………………………………………… 37
■ Options ………………………………………………………… 38
12 TEMPLATE ……………………………………………………… 39
TABLE OF CONTENTS