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E-16 West Marine VHF460 Radio Owner’s Manual
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.
Your radio supports the following DSC features:
Feature Menu Item Function
Individual Call Individual Contact another vessel from your directory.
Group Call Group Contact all vessels that share your group MMSI code.
All Ships Call All Ships Broadcast to all vessels within range (used for Safety or Urgency
messages).
Position Request POS Request Request the current location of another vessel.
Position Send Position Send Transmit your current location to another vessel.
Test Call Test Make sure your radio is working and congured correctly.
Standby Mode Standby Automatically respond to all DSC calls with “Unavailable” status.
Receive Log Receive Log Displays last 10 distress calls and last 50 general calls the radio
received.
DSC Setup DSC Setup Accesses DSC menus.
- Directory
- Auto CH SW
- POS Reply
- Test Reply
- Group MMSI
- User MMSI
In order to use DSC features, you must be assigned a User 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 eets, boating organizations, event
coordinators, etc.
You can get more information on MMSI numbers at these resources:
x The dealer where you purchased the radio
x Recreational boaters can obtain an MMSI number from the Boat Owner’s Association