Furuno RC-1500-1T Operator's Manual page 66

5. Select ACKNOWLEDGE and press the [ENT] key. The following display appears.
Send message
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CALL TYPE : ALL SHIPS
DISTRESS ACKNOWLEDGE
SHIP IN DIST :
DSC FREQ :
GO TO ALL VIEW
6. Press the [CALL] key to send the distress acknowledge call to the ship in distress. Note that
the distress acknowledge is immediately sent when the time elapsed between reception and
transmission of it is more than one minute. If it is transmitted before one minute has elapsed
a timer appears and counts down the time remaining before it is sent.
Distress acknowledge
call in progress!
SHIP IN DIST :
DSC FREQ :
GO TO ALL VIEW
3-12
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2187.5 KHZ
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2187.5 KHZ