Simple Souelch

As anyone who has monitored a receiver for any length of time knows, a squelch is worth its weight in gold. Especially mobile, nothing can seem more tiring than constant receiver noise.

A simple squelch arrangement can be added to most small transceivers, with minimum effort, to alleviate the problem. Two diodes and a few resistors are all that is needed to make this effective squelch.

Squelch Circuit
Fig. 1. Simple squelch ckcuit. Install before final audio amplifier.

The squelch circuit can be inserted between the last audio stage of the receiver and the final audio amplifier. The squelch level is set by varying the IK pot. Power is most easily obtained from a 9V transistor battery.


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  • Graham
    How to make simple squelch circuit?
    4 months ago

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