CW Sidetone Generator

Posted on Aug 19, 2012

This circuit is about as good as it gets for generating morse code tones. It may be used as a code practice oscillator, a tone generator for a keyer, a sidetone oscillator for a CW transmitter or an audio Modulated CW (MCW) generator for an FM transmitter or repeater.

CW Sidetone Generator
Click here to download the full size of the above Circuit.

One may think that this is a lot of circuitry just to make simple beep tones, but the real value of the circuit is that it sounds very smooth when compared to a clicky and harsh-toned square wave code oscillator. This circuit won`t hurt your ears, ev

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