Uniden UM425 VHF DSC 사용자 설명서

NOTE: By default, when you change to channel 16, the radio automatically 

boosts the power to 25 Watts.  Be sure to change the power back to 1 Watt if 

you are not making an emergency transmission.
Some channels limit the power of transmission to 1 Watt so that there is less 

interference between boaters attempting to use the channel at the same 

time. If you switch to one of these channels, the radio changes back to 1 Watt 

automatically. See the channel list on page 57 for a list of power-restricted 

channels.

In Triple Watch mode, the radio briefly checks channels 16 and 9 every two 

seconds. In Dual Watch mode, the radio checks channel 16 only. Generally, 

Triple Watch is used in areas where channel 9 is used as a hailing frequency, 

while Dual Watch is used in areas where channel 16 is used for distress and 

hailing. Your radio comes set to use Triple Watch; if you want to use Dual 

Watch instead, you will have to select it in the setup:

Dual Watch

Triple Watch

[Exit]

Dual/TriWatch

Setup

Dual/TriWatch

Press the 

1. 

 button to display the menu.

Select 

2. 

Setup and then Dual/Tri Watch.

Highlight

3. 

 Dual Watch and press the 

button. The radio  

activates the new setting and returns to the Setup menu.
To reactive Triple Watch, repeat the procedure described above, but     

4. 

choose Triple Watch in step 3.

UM425 VHF OM.indd   21

28/9/11   11:55:16 AM