Furuno RC-1500-1T, Operator'S Manual

Page: 31 / 418

1-1
1. DSC SYSTEM OVERVIEW
1.1 What is DSC?
DSC is an acronym meaning Digital Selective Calling. It is a digital distress and general calling
system in the MF, HF and VHF bands used by ships for transmitting distress alerts and general
calls and by coast stations for transmitting the associated acknowledgements.
For DSC distress and safety calling in the MF and HF bands the frequencies are (kHz) 2187.5,
4207.5, 6312.0, 8414.5, 12577.0, and 16804.5.
The DSC-60 is a combination MF/HF DSC Terminal and Watch Receiver. Connected to an SSB
radiotelephone, the DSC-60 sends and receives calls via the SSB radiotelephone. The built-in
remote control permits control of a FURUNO radiotelephone from the DSC-60.
SSB RADIOTELEPHONE
FS-1562/5000/8000
DSC-60
DSC message, which contains
calling category, working fre-
quency, etc, is sent on DSC
frequency
General DSC Call
Distress and Safety DSC Calls
Option
1.2 DSC Call
DSC calls are roughly divided in two categories: distress and safety calls, and routine calls.
Below are the types of DSC calls and the pages on which their descriptions and procedures
appear.
•
All Ships (page 4-1)
•
Distress (your ship is in distress) (page 3-1)
•
Distress relay all (all ships) (page 3-18)
•
Distress relay sel (coast station) (page 3-15)
•
Geographical Area (page 4-20)
•
Group (page 4-17)
•
Individual (page 4-4)
•
Medical Transport (page 4-26)
•
Neutral Craft (4-24)
•
Polling (page 4-28)
•
Position (page 4-33)
•
PSTN (page 4-39)
•
Test (page 8-4)