Specifications

Group Call.................................................................................................................. 21
Pre Defined Group Call.............................................................................................. 21
Individual Calls (GP380/GM360).............................................................................. 22
Chapter 4 ............................................................................................................................... 23
Motorola GM360 VHF Base Station/Mobile ..................................................................... 23
Functions............................................................................................................................. 23
Differences in Button Layout..................................................................................... 23
Selective Calling SelV ........................................................................................................ 24
Stunning/Un-Stunning Motorola VHF Radios .................................................................. 24
Stun Procedure ........................................................................................................... 24
Un-Stun Procedure..................................................................................................... 26
Chapter 5 ............................................................................................................................... 27
HF Radio (High Frequency) ............................................................................................... 27
About HF Communications Operation ............................................................................... 27
HF Coverage Guide (Approximate Distances) .......................................................... 27
HF Propagation................................................................................................................... 28
Ground-wave.............................................................................................................. 28
Direct wave ................................................................................................................ 28
Sky-wave.................................................................................................................... 28
Radio wave propagation illustrated............................................................................ 29
Factors which affect HF/SSB communications ......................................................... 30
Frequency selection.................................................................................................... 30
Time of day ................................................................................................................ 30
Weather Conditions.................................................................................................... 30
Man-made electrical interference............................................................................... 30
System configuration and installation........................................................................ 31
Chapter 6 ............................................................................................................................... 32
HF Radio Equipment .......................................................................................................... 32
General Care .............................................................................................................. 32
Codan NGT HF Handset............................................................................................ 32
Sending/Receiving Calls on the Codan NGT............................................................. 33
Answering incoming selcall....................................................................................... 33
Making a selcall ......................................................................................................... 34
Channel Test Call (Selective Beacon Call) ................................................................ 34
Making Channel Test (Beacon) Call.......................................................................... 35
Portable HF Radios............................................................................................................. 36
Codan ......................................................................................................................... 36
Q-Mac ........................................................................................................................ 36
Barrett......................................................................................................................... 37
Mobile Radios..................................................................................................................... 37
Chapter 7 ............................................................................................................................... 38
Radio Communication Procedures ..................................................................................... 38
Radio Use Checklist................................................................................................... 38
Radio discipline.......................................................................................................... 39
Rules to be followed: ................................................................................................. 39
Radio Operators Training Manual Version 27/11/2007 2