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Chapter 5: Digital Selective Calling (DSC)
The Ray49E includes equipment for Class “D” Digital Selective Calling (DSC). DSC
protocol is a globally applied system used to send and receive digital calls. DSC
uses a unique Maritime Mobile Service Identity (MMSI) number to direct DSC calls
directly to your radio, much like a telephone number.
Note:
An MMSI number is required to operate the DSC equipment in this radio. You can
request an MMSI number from the same agency that issues radio or Ship Radio licences in
your area. Once obtained, you can program the MMSI number yourself one time only using
the operation described in “My MMSI ID“ on page 87. Otherwise, your Raymarine dealer
can program or change the number for you.
The Ray49E includes a separate dedicated receiver just for DSC communications
on channel 70. When a DSC call is received, the radio automatically responds
based on the type of call. When receiving a DSC call from another vessel or a coast
station, an alert sounds and DSC data appears in the LCD–such as time of a call,
the caller and the type and priority of a call.
Note:
If you purchased your Ray49E to include use on the inland waterways of the con-
tracting governments of the “Regional Arrangement Concerning the Radiotelephone Ser-
vice on Inland Waterways”—also known as the Basel Agreement—your radio will be
programmed by your dealer to include Automatic Transmitter Identification System (ATIS)
functionality. If ATIS has been enabled, certain programming steps have been implement-
ed to protect the integrity of this agreement, including the blocking of DSC functions when
ATIS is active. See “ATIS Function“ on page 53.
5.1 DSC Call Menu
You access DSC functions via the DSC menu. Press and hold the MENU/DSC key
for 3 seconds to enter DSC call mode.
Note:
Distress calls are made using the DISTRESS key.
The Ray49E can make the following type of DSC calls:
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DSC MENU
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