Furuno FM-4000 - Manual (Page 49)

Page 49 FM-4000
11. After the Group call is transmitted, all the radios in
the group switch to the designated channel.
12. Listen to the channel to make sure it is not busy,
then key the microphone and call the other
vessels.
11.7.3 Receiving a Group Call
1. When a Group call is received, the FM-4000 sounds
a ringing alarm and the radio automatically switches
to the requested channel.
2. Press any key to stop the alarm.
3. Monitor the channel for a message sent by a person calling the Group.
4. If you want to respond, monitor the channel to make sure it is clear, then
press the PTT on the microphone and talk to the calling ship(s).
NOTE
After a Group call is received, the time the call was made and the ship’s
MMSI or vessel’s name appear on the LCD.