User's Manual

24
The Distress call is now sent 5 times continuously with the preamble dot pattern
in front of each string. The whole display FLASHES and BEEPS very loudly. If
Channel 70 is BUSY, the radio transmits anyway and the cycle is repeated
randomly every 3.5 – 4.5 minutes until an acknowledgement is received or the
mode is manually cancelled.
The Tx and Hi annunciators turn ON during Tx on CH70. After Tx the channel
reverts to CH16 and high power. Your transceiver is automatically set to
Channel 16 in order to listen for, and respond to, voice replies from SAR
authorities or other vessels that may have received your distress call. The
Automatic re-transmission mode is entered. The alarm sounds every 2 minutes
to remind you that a distress message is active. Press EXIT to cancel this
mode. This is the only key that functions at this time.
Re-transmissions of DSC distress calls are canceled automatically when a DSC
acknowledgment is received from an authorized SAR coast station, or canceled
manually by you.
SENDING A CALL TO CANCEL A TRANSMITTED DISTRESS CALL
From the Distress Cancellation Screen, cancel the Distress Call by pressing the
Channel/Select key. The text area of the display reconfigures to have the user
confirm the distress cancellation. Select "YES" and push distress key to
transmit a call to cancel the transmitted distress call. Select "NO" and press
Channel/Select button to abort cancellation. Once cancellation has been
confirmed, the radio returns to normal VHF operation on channel 16 with high
power selected.
RECEIVING DISTRESS CALLS
The NC392/363 receives distress messages sent by another vessel and/or
acknowledgments (ACK) sent by a coast station to another vessel in distress.
In such cases you should maintain a listening watch on channel 16 and standby
to lend assistance. There is no automatically reply/relay to distress or ACK or
relay DSC calls.
RECEIVING A DISTRESS CALL FROM ANOTHER VESSEL
When a distress call is received, the NC392/363 automatically tunes to channel
16, and the Distress Alarm Tone sounds. Pressing any key disables the alarm.
When position data and time is included within the signal, it is displayed in the
Text Area of the LCD. If invalid GPS or Time data is received, the Lat/Lon
position shows ‘9’ in all digits and the time shows all ‘8’s. The 2 alternating
pages of data are recorded in the DISTRESS CALL LOG. Make VOICE contact
on CH16.
ALTERNATING
DISTRESS!
ID123456789
99º99. X
999º99. Y
DISTRESS!
ID123456789
PIRACY
12:45PM LOC