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50 GPSMAP 400/500 Series Owner’s Manual
Digital Selective Calling
To turn DSC on or off:
1. Select Congure > Other Vessels.
2. Select DSC to toggle it on or off.
Adding a DSC Contact
You can make calls to a DSC contact from the chartplotter. See
page 52 for information on making an individual routine call.
1. While viewing a chart, press MENU > Other Vessels > DSC >
DSC List > Add Contact.
2. Use the Rocker to enter the Maritime Mobile Service Identity
(MMSI) number of the vessel, and press SELECT.
3. Use the on-screen keyboard to enter the name of the vessel, and
select Done.
Viewing the DSC List
The DSC list is a log of the most-recent DSC calls and other DSC
contacts you have entered. The DSC list can contain up to 100
entries. The DSC list shows the most-recent call from a boat. If a
second call is received from the same boat, it replaces the rst call in
the call list.
From a chart screen, press MENU > Other Vessels > DSC > DSC
List.
Receiving Distress Calls
If your Garmin chartplotter and VHF radio are connected via NMEA
0183 or NMEA 2000, your chartplotter alerts you when your VHF
radio receives a DSC distress call. If position information was sent
with the distress call, that information is also available and recorded
with the call.
The symbol designates a distress call in the DSC List and marks
the position of a vessel on the Navigation chart at the time the DSC
distress call was sent.
When you receive a DSC distress call:
1. Select Review to view details about the call.
2. Complete one of the following:
Select Call with Radio to set up an individual routine call with
the radio to call the vessel in distress (page 52). This option
is only available if you are using a Garmin NMEA 2000-
compatible VHF radio.
Select Edit to edit the vessel name and add a comment. If
your radio is tracking the position of the vessel, select Trail to
show or hide the trail line for the vessel, and select Trail Line
to change the line color. Select Clear Report to delete the
call report. Select Create Waypoint to set a waypoint at the
position sent with the distress call.
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