iv

FOREWORD ……………………………… i
IMPORTANT ………………………………i
EXPLICITDEFINITIONS ………………… 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………………… 9
■Microphone Lock function …………9
■Display backlight…………………… 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 ……………… 13–29
■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……………… 26
7 OTHER FUNCTIONS ………… 30–31
■Intercom operation ……………… 30
■Public Address (PA) function …… 31
■RX Speaker function ……………31
8 SET MODE ……………………… 32–34
■Set mode programming ………… 32
■Set mode items…………………… 32
9 CONNECTIONS AND
MAINTENANCE………………… 35–37
■Connections ………………………35
■Supplied accessories …………… 36
■Antenna …………………………… 36
■Fuse replacement………………… 36
■Mounting the transceiver………… 36
■Optional MB-69 installation……… 37
10TROUBLESHOOTING ……………… 38
11SPECIFICATIONS AND
OPTIONS ……………………………39
■Specifications ……………………39
■Options …………………………… 39
12COMMANDMIC II™HM-157 …40–53
■Panel description ………………… 40
■Function display …………………42
■Channel selection………………… 44
■Receiving and transmitting ……… 45
■Call channel programming ……… 46
■Lock functions …………………… 46
■Display backlight ………………… 47
■Monitor function……………………47
■Dualwatch/Tri-watch operation … 47
■Setting TAG channels …………… 48
■Starting a scan …………………… 48
■Set mode programming ………… 49
■Intercom operation ……………… 50
■Public Address function ………… 50
■RX Speaker function ……………50
■Channel comments ……………… 51
■HM-157 supplied accessories……51
■Installation ………………………… 52
13CHANNEL LIST ……………………54
14TEMPLATE ………………………… 55
TABLE OF CONTENTS