Radio Shack PRO-93 - Manual (Page 24)

24
Operation
in manual mode or while the scanner is receiving a sig-
nal during scanning. See “Changing the Open/Closed
Mode” on Page 64 for more information about setting the
open and closed modes.
ˆ
Operation
TURNING ON THE SCANNER AND
SETTING SQUELCH
1. Turn SQUELCH fully counterclockwise until the indi-
cator points to MIN before you turn on the scanner.
2. To turn on the scanner, turn VOLUME clockwise.
3 3 3 3 appears. After about 3
seconds, you hear a hissing sound.
3. Turn SQUELCH clockwise until the hissing sound
stops.
4. To turn off the scanner, turn VOLUME counterclock-
wise to OFF .
Notes:
• The scanner does not scan if there are no frequen-
cies stored in channels. If the scanner does not
scan and you have already stored frequencies in
channels, turn
SQUELCH further clockwise.
• If the scanner picks up unwanted, partial, or very
weak transmissions, turn SQUELCH clockwise to
decrease the scanner's sensitivity to these signals.
If you want to listen to a weak or distant station, turn
SQUELCH counterclockwise.
• If SQUELCH is adjusted so you always hear a hiss-
ing sound, the scanner will not scan properly.
• To ensure the scanner operates properly while in
the trunking mode, we suggest you set SQUELCH
using the steps listed above.