SQUELCH
Turn SQUELCH fully clockwise. This raises the “Squelch Gate” so high that only very strong signals can get through.
Strong Signals 
Medium Signals 
Weak Signals 
Noise 
Turn SQUELCH fully counterclockwise until you hear a hiss. This lowers the “Squelch Gate” so that everything gets through - noise, weak signals, and strong signals.
Strong Signals
Medium Signals
Weak Signals
Noise 
Turn SQUELCH back clockwise until the hiss stops. Now the “Squelch Gate” allows strong, medium, and weak signals through.
Strong Signals
Medium Signals
Weak Signals
Noise 
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