Appendix B: Dsc - Garmin GPSMAP 182 Owner's Manual

Appendix B
Digital Selective Calling (DSC)
Distress Call Message
Position Report Message
72
with the MMSI number attached to the call (if the user has DSC support). Any DSC-equipped mariner
(on sea or land) within range can receive the call.
When the Garmin GPSMAP 182/182C/232 is connected to a VHF with DSC support, the GPS unit
displays a Call List, Log, and a Directory available to store incoming information received from another
user' s DSC capable VHF/GPS combination. Basic wiring is required for the Garmin unit and VHF radio
to send and receive NMEA data from each other (pg.87).
Distress Call
With a Garmin DSC capable chartplotter/sounder properly connected to a VHF radio with DSC
output, the user may receive any DSC Distress Call within range. A window will pop up and a message
will display when a Distress Call is received. To notify the user a Distress Call has been received, an
alarm will sound (if enabled). The alarm only sounds on a Distress Call, and it will not sound on a
Position Report. Distress Calls are broadcasted to all DSC users in radio range.
Options available from this screen are:
• Show on Map: If the user immediately wants to see the caller' s position they select 'Show on
Map'.
• Create Waypoint: If the user wanted to create a waypoint of that posistion they highlight
'Create Waypoint' and press ENTER/MARK.
The user also has the ability to input the user' s name, if it is known. (NOTE: The user' s name
replaces the MMSI number as a reference once it is entered.)
DSC Position Report
The Position Report operates similarly to the Distress Call. Remember this type of contact is like a
phone call, but no emergency alarms are set off and the call is specifi c to the receiver. Position Reports
are not broadcasted to all DSC users.