NASA SX 35 DSC - Manual (Page 42)

40 SX 35 DSC
• Press the
ENT
key. The blinking cursor moves to the first digit in the
MMSID entry field. The last used manual MMSID is displayed.
• Use the SELECT knob or microphone keys to change the MMSID for
the vessel or station to call.
• When the MMSID is correct, press the
CALL
key to send the call. DSC
calls are made on channel 70. If you observe the display closely, you
will see the channel number change to channel 70 momentarily and then
revert to the selected working channel.
• While waiting for acknowledgment from the called vessel,
WAITING . . . . appears in the lower line of the display.
INT SET CH
06 08 72 77
SET MMSID
WAITING....
Waiting For Acknowledge
• When the called vessel acknowledges your call, an alert sounds and
ACK RECEIVE appears in the lower line of the display.
INT 16 PRI. HI
06 08 72 77
SET MMSID
ACK RECEIVE
Acknowledge Received
• Press the PTT button on the microphone to silence the alert and begin
voice communication with the called vessel.
• The
END
key may be used to exit the DSC calling procedure at any
time prior to sending the call.
All Ships Call
The All Ship’s call allows you to send an Urgent or Safety DSC call to nearby
vessels without having to know their MMSID numbers. The All Ship’s call
may be used in situations that are serious but do not warrant a distress call,
and voice communication attempts have failed.
To send an All Ship’s call:
• Press the
CALL
key. The call menu appears in the display.