Uniden UM425 VHF DSC 사용자 설명서

Press the 

1. 

 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. 

 

and 

buttons to highlight the directory entry you want to 

contact and press the 

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 

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. 

When another station requests your current position, the radio displays the 

following screen:

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.

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