Making A Voice Mayday Call; Setting The Volume; Setting The Squelch Level - Uniden UM425 Owner's Manual

Using Your Radio
The currently selected item is highlighted in reversed out text.
•
• Press 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
• Press 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
• From any menu screen, choose Exit or press the
close the menu screen.

Making a voice MAYDAY call

(see inside front cover)

Setting the volume

Turn the volume knob clockwise to increase the speaker volume; turn it
counter-clockwise to decrease the volume.

Setting the squelch level

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.
button on the radio or the
CHANNEL UP
SELECT-1W/25W
CHANNEL DOWN
button to go back to the previous menu screen.
MENU-PA
Strong signals
Weak signals
Noise
No
Squelch
button to choose the selected item.
button on the radio or the
Medium
Squelch Squelch
E-19
▲
button on the
▼
button on the
button to
16/9-TRI
High