37
Using Digital Selective Calling (DSC) Features
Press the
1.
MENU-PA
button to display the menu.
Choose the
2.
DSC Call
sub-menu, then select
POS Request
.
The radio displays the names listed in your directory; use
3.
CHANNEL UP
and
CHANNEL DOWN
buttons to highlight the directory entry you want to
contact and press the
SELECT
button. If you want to contact a station
that is not in your directory, select
Manual.
The radio prompts you to
enter the MMSI number you want to call. Enter the MMSI number the
same way you enter directory entries (see page 27). Enter all nine
digits and press the
SELECT
button.
The radio displays the MMSI number you are about to contact and
4.
asks you to confirm. If you want to request the position of the displayed
MMSI number, select
Send.
To cancel the request, select
Cancel
.
When the other station responds, the radio displays the MMSI number,
5.
the longitude, and the latitude of the other station. If your radio is
connected to a chartplotter through the NMEA OUT connection (see
page 48), the position information will also be displayed on the plotter
screen.
If the other station does not have valid GPS data, the radio displays
6.
No
Position.
Receiving a position request (Position Reply)
When another station requests your current position, the radio displays the
following screen:
88
Reply
Cancel
POS Request
JOHN HENRY
To send your current position to the other
station, select
Reply
; the radio transmits your
latitude and longitude to the other station. If
you select
Reply
but the radio does not have
valid GPS data, it transmits the reply code
with
No Position
.
To reject the position request, select
Cancel
.
Enabling automatic position reply
If you want the radio to automatically transmit your current position whenever
it receives a position request, you can enable automatic position reply. Most
boaters activate automatic position reply for safety reasons or because they
subscribe to a marine towing service. Sometimes—for example, in some
competitive situations--you may not want other stations to get your position
without your manual confirmation
UM425 VHF OM.indd 37
28/9/11 11:55:19 AM
