The Whistler Group SC04 Manuale Utente

Turning on the Scanner

The squelch and attenuator control scanner 
sensitivity. If squelch is set too low, the scanner may 
stop on noise or silence. 

Note: Make sure the scanner’s antenna is connected 
before you turn it on.

1.  Turn the SQUELCH knob to about mid-position.
2.  Turn the VOLUME knob to turn on the radio.
3.  Turn SQUELCH down (counterclockwise) until 

you hear noise.

4.  Turn SQUELCH up (clockwise) a little past where 

the noise stops. The higher the squelch is set, 
the stronger the signal required to break the 
squelch.