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33 Northtstar Explorer VHF Series: 710US, 710EU Operation and Installation Manual
6-2 Receiving a Distress Call (DISTRESS!)
1. An alert sounds when a distress call (DISTRESS!)
is received. Press any key to cancel the alert. You
do not need to send an acknowledgement.
2. The radio automatically selects CH16 and displays the details of the distress call on the screen. Press PTT
to establish voice contact.
The details are displayed over two screens that alternate every 1.5 seconds; the fi rst screen shows the user
MMSID and nature of the emergency (if specifi ed), the second screen shows the time and the location
(if specifi ed). If the location and time are not specifi ed, these are replaced with sequences of 9s and 8s
respectively.
The VHF710 is capable of receiving enhanced LL position data if the vessel transmitting the Distress Call
is sending this. This provides the position of the distressed vessel to within 20 m (60ft).
6-3 Distress Acknowledgement (distress ack) or Relay
An alert sounds when a Distress Relay (DISTRESS RELAY) is received. Press any key
to cancel the alert.
Try to make voice contact with the calling vessel. Maintain a listening watch on
CH16 and standby to lend assistance.
For a Distress Acknowledgement (DISTRESS ACK) sent from the Coast Guard, your radio automatically cancels
Distress Mode transmissions and CH16 appears. Press PTT to establish voice contact with the Coast Guard.
The Coast Guard is the only agency allowed to send a Distress Acknowledgement (DISTRESS ACK).
RCV: DISTRESS
123456789
FLOODING
ESC –> EXIT
RCV: DISTRESS
10:34 UTC
82º50.003'N
27º45.543'W
RCV: DISTRESS
RELAY
123456789
ESC –> EXIT