Step 4: Set Up Your Scanner; Turn On Your Scanner; Set The Squelch - Radio Shack PRO-2051 User Manual

The Basics

step 4: set up your scanner

turn on your scanner

Turn VOL clockwise. The scanner turns on and the ALERT
indicator lights for a moment. Then the alert tone beeps and
TEST appears. The last setting you selected before turning
the scanner off appears.
The alert tone depends on the currently selected setting
Note Note
(see "Setting the Alert Tone Volume").

set the squelch

Think of squelch as a gate. If the gate is too low (squelch too
low), everything (all noise as well as signals) gets through.
If the gate is set too high (squelch too high), nothing gets
through. If the gate is set just right (the squelch is set
properly), just the desired signals get through.
1. To set the squelch, press HOLD/RESUME to stop
scanning. HOLD appears. If needed, adjust VOL until you
do not hear a signal.
2. Turn SQL fully counterclockwise until you hear a hissing
sound. This lowers the "squelch gate," allowing all signals
and noise to get through.
3. Turn SQL clockwise just until the hiss stops. This raises
the "squelch gate," allowing only strong signals to get
through. In a city, you may want to adjust the squelch
even further clockwise to decrease the range of the
highway warning alert signal. This prevents the alert from
sounding unnecessarily due to farther, less important
sources.
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