Setting Up Your Scanner; Turning On The Scanner And Setting Squelch - Radio Shack PRO-2055 User Manual

The Basics

setting up your scanner

turning on the scanner and setting
squelch
1. To turn on the scanner, turn VOL clockwise. Multi-
system Trunking Scanner appears. After about 3
seconds, you might hear a hissing sound. Then
adjust VOL to a comfortable level.
2. Turn SQ fully counterclockwise, then turn SQ
clockwise until the hissing sound stops.
3. To turn off the scanner, turn VOL counterclockwise
to OFF.
The scanner does not scan if there are no
Note Note
frequencies stored in channels. If the scanner does
not scan and you have already stored frequencies
in channels, turn SQ further clockwise.
If the scanner picks up unwanted, partial, or very
weak transmissions, turn SQ clockwise to decrease
the scanner's sensitivity to these signals. If you
want to listen to a weak or distant station, turn SQ
counterclockwise.
If SQ is adjusted so you always hear a hissing
sound, the scanner will not scan properly.
To ensure the scanner operates properly while in
the trunking mode, we suggest you set SQ using
the steps listed above.
If SQ is adjusted precisely at the threshold where
the hissing sound stops, the radio will be most
sensitive to very weak signals. The radio may also
receive unwanted noise or signals that are too
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