Setting Up Your Scanner; Turning On The Scanner And Setting Squelch - Radio Shack PRO-97 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 frequencies
Notes Notes
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 weak to understand. Most
users prefer to position the squelch control a little bit past
the point of threshold to avoid receiving noise or signals
that are too weak to understand.
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