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7
Introduction
DSC Digital Selective Calling. A VHF radio standard for
communicating among boats and sending automated
distress calls.
GPS Global Positioning System
NMEA National Marine Electronics Association. The
organization that governs standards for electronic
equipment used on boats. NMEA 0183 is the standard
for serial data communication used by GPS receivers.
MMSI Maritime Mobile Service Identity number. A unique,
nine-digit number that identies you and your boat
when making DSC calls. It is also used by the Coast
Guard if you send an automated distress call.
Station Any DSC radio, whether it’s operated on a boat, at a
marina, or by a shore station.
Table 1 - Terms used in the manual
UM425 VHF OM.indd 7 28/9/11 11:55:12 AM