Radio Shack PRO-97 manual Setting up your scanner, Turning on the scanner and setting squelch

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.

Notes	The scanner does not scan if there are no 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 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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