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UsInG DIGItAL seLeCtIVe CALLInG (DsC) FeAtURes
What is DsC?
Digital Selective Calling (DSC) is a standard that allows you to call other stations using their
unique identification code (the Maritime Mobile Service Identity or MMSI number), just like
you would call a phone number. To call another station, just enter that station’s MMSI number
and choose the voice channel you want to talk on. The radio uses channel 70 to transmit your
MMSI number to the other station along with the voice channel you requested. If the other
station accepts your call, both radios automatically switch to the requested voice channel so
you can talk to the other station.
DSC provides a system for automated distress calls. At the touch of a button, the radio can
transmit your MMSI number, the nature of your distress, and your current position based on
data from your GPS receiver. The radio repeats the distress call every few minutes until it
receives an acknowledgement.
The DSC standard dedicates a VHF channel - channel 70 - to digital transmissions only.
Since digital transmissions require less bandwidth voice transmissions, channel 70 avoids
the problems of busy voice channels.
Advanced DsC features
Your radio supports the following DSC features:
Feature
Individual Call
Group Call
All Ships Call
Position Request
Position Send
Test Call
Name and MMS
Directory
Standby Mode
Received Call Log
Menu Item
Individual
Group
All Ships
POS Request
Position Send
Test
Directory
Standby
Receive Log
Function
Contact another vessel from your directory.
Contact all vessels that share your group MMSI code.
Broadcast to all vessels within range (used for safety or advi-
sory messages).
Request the current location of another vessel.
Transmit your current location to another vessel.
Make sure your radio is working and configured correctly.
Store a list of 20 names and MMSI identification codes for
DSC calls.
Automatically respond to all DSC calls within an “Unavailable”
status.
Display the last 10 distress calls received by the radio and the
last 20 general calls.
What is an MMsI number?
In order to use DSC features, you must be assigned an MMSI number and program that
number into your radio. There are two kinds of MMSI numbers: individual numbers for use
by single boats and group numbers for use by fleets, boating organizations, event coordina
-
tors, etc.
Summary of Contents for MC-8050 DSC
Page 1: ...MC 8050 DSC owner s Manual...
