Chapter 5: Digital Selective Calling (DSC)
77
5.7 Position Request
With this option you can request GPS position information from any station
capable of responding to this type of call and for which an MMSI number is
known. You can specify the target station either by selecting it from your MMSI
phonebook or by manually entering its MMSI number.
Specifying the Target Vessel
1. Select POS REQUEST from the DSC menu.
2. Select the target station name from the phonebook.
—or—
Select <MANUAL> and enter the target station’s MMSI number, as described
in “Adding a new Entry“ on page 64.
3. Press SEND to transmit the Position Request Call.
The call is transmitted on channel 70, and then the radio tunes to the original
channel and waits for acknowledgement. During this period you are still able
to receive calls.
When the Position Request is accepted by the receiving station:
When the position request is received, the Ray49 shows that the call has been
accepted by the requested station. The radio sounds a Call Alert tone. Press any
key to mute the alert tone. It shuts off automatically after two minutes.
Press
CLR/WX
to exit to normal radio operation. You can retrieve the position
information later using DSC MENU > RECV’D CALLS > POSIT’N LOG.
D10182-1
DSC MENU
GROUP
ALL SHIPS
>POS REQUEST
69
POS REQUEST
>[MANUAL]
GULF TIDE
ISLANDER
69
69
POS REQUEST
[MANUAL]
GULF TIDE
> ISLANDER
69
POS REQUEST
ISLANDER
>SEND
CANCEL
