Uniden UM425 VHF DSC, Руководство пользователя

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19
Using Your Radio
The currently selected item is highlighted in reversed out text. •
Press the •
CHANNEL UP
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
•
SELECT
button to choose the selected item.
Press the •
CHANNEL DOWN
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
•
MENU-PA
button to go back to the previous menu screen.
From any menu screen, choose • Exit or press the
16/9-TRI
button to
close the menu screen.
Making a voice MAYDAY call
(see inside front cover)
Turn the volume knob clockwise to increase the speaker volume; turn it
counter-clockwise to decrease the volume.
Setting 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.
Weak signals
No
Squelch
Medium
Squelch
High
Squelch
Strong signals
Noise
UM425 VHF OM.indd 19 28/9/11 11:55:16 AM