Chapter 5: Digital Selective Calling (DSC)
5.2 Distress Calls
For a Distress Call transmission, the Ray49 takes the position and time
information from the input NMEA data along with your MMSI and converts it into
a digital "packet". When transmitted, this digital information lets other ships and
shore stations equipped with appropriate DSC equipment know where you are
and that you are in a Distress situation.
Your call can specify the nature of the Distress (designated call) or not
(undesignated call).
Sending a Distress Call
Lift the spring-loaded door on the front panel of the transceiver.
Undesignated (Quick) Distress Call
To send a distress call without specifying its nature:
• Press and hold the red DISTRESS key for 3 seconds to initiate the call. During
this time, the radio beeps, the display flashes and a timer counts down
03...02...01.
PRESS and HOLD for 3 SECS
DISTRES CALL
55 60 5
COUNTING
10
50
DOWN...
45
15
20
40
35
25
30
DISTRES CALL
COUNTING
DOWN...
DISTRES CALL
COUNTING
DOWN...
DISTRES CALL
TRANSMITTING
DISTRESS
UNDESIGNATED
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