Uniden UM425 VHF DSC 사용자 설명서

The currently selected item is highlighted in reversed out text. 

• 

Press the 

• 

 button on the radio or the

▲

 button on the 

microphone to move up a line in the menu; if you are at the top line in 

the menu, the cursor jumps to the bottom of the menu. 
Press the 

• 

 button to choose the selected item.

Press the 

• 

 button on the radio or the

▼ 

button on the 

microphone to move down a line in the menu; if you are at the bottom 

line of the menu, the cursor jumps to the top of the menu.
Press the 

• 

 button to go back to the previous menu screen.

From any menu screen, choose

• 

 Exit or press the 

 button to 

close the menu screen.

(see inside front cover)

Turn the volume knob clockwise to increase the speaker volume; turn it 

counter-clockwise to decrease the volume.

The squelch feature reduces the level of static on the speaker by filtering out 

the background channel noise. At the lowest squelch level, the speaker plays 

all radio signals, including any noise on the channel. Setting the squelch 

level higher filters out channel noise and lets only actual radio transmissions 

through. 

Weak signals

No 

Squelch

Medium 

Squelch

High 

Squelch

Strong signals

Noise

UM425 VHF OM.indd   19

28/9/11   11:55:16 AM