Dsc Overview; What Is Dsc; Dsc Call - Furuno FS-1570 Operator's Manual

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DSC OVERVIEW

3.1 What is DSC?

DSC is an acronym meaning Digital Selective Calling. It is a digital distress and general
calling system in the MF and HF 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 station sends and receives DSC general and safety calls via the radiotelephone.
Routine DSC Call
(FS-2570

3.2 DSC Call

DSC calls are roughly divided in two categories: distress and safety calls, and routine calls.
Below are the types of DSC calls.
Call
All Ships
Distress
Distress relay all
Distress relay select
Geographical Area
Group
Individual
Medical Transport
Neutral Craft
Polling
Position
PSTN
Test
Distress Frequency
TRANSCEIVER
UNIT
Option
FS-1570T
only)
FS-2570T
Call to all ships
Your ship sends distress call
Your ship relays distress call to all ships
Your ship relays distress call to a coast station
Call to all ships in a specific geographical area
Call to a specific group
Call to a specific address
Inform all ships that your ship is carrying medical supplies
Inform all ships that your ship is not a participant in armed conflict
Call to determine if own ship is in communicating range with other
ship
1) You send your position to other stations
2) Your ship requests position of other station
Call over Public Switched Telephone Network (PSTN)
Send test signal to a coast station to test your station's functionality
Distress alert, routince DSC call
Routine DSC Calls
CONTROL UNIT
FS-2570C
Description
3-1