Uniden UM425 VHF DSC 사용자 설명서

NOTE: You are required to monitor channel 16 whenever your boat is under-

way. You should have either Triple Watch or Dual Watch on at all times.

In addition to the two main operation modes, the UM425 also provides two differ-

ent “watch” modes which you can activate during any of the two basic modes. In 

the watch modes, the radio briefly checks for activity on a specific channel, then 
returns to its previous mode.

Normal mode monitors whatever channel you select, and you can transmit on 

that channel also. 
While using normal mode, the display lets you see the following information 

(not all indicators will display at the same time): 

Marine Operator

25 Watts   INT
Memory 
GPS Data OK

Transmit power 

(1 W or 25 W)

Current channel  

is stored in 

memory

Status messages 

(see the status 

message table)

Current 

channel 

number

Current channel 

name (if the name 

is too long, the 

name line scrolls)

Channel mode 

(

USA, CANadian, 

or 

INTernational)

Watch mode

What it does:

Use it when:

To turn it on/off:

Triple Watch

Checks for activity 
on channels 16 
and 9 every two 
seconds.

You want to monitor 
a channel yet 
maintain a watch on 
channels 16 and 9.

Press and hold the 

 button for 

two seconds.

Dual Watch

Checks for activity 
on channel 16 every 
two seconds.

You want to monitor 
a channel yet 
maintain a watch on 
channel 16.

Change Triple 
Watch to Dual 
Watch in the setup 
menu, then press 
and hold the 

 button for two 

seconds.

UM425 VHF OM.indd   13

28/9/11   11:55:15 AM