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Smooth Tone Clickless CW Sidetone Generator

Smooth Tone Clickless CW Sidetone Generator

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, or a sidetone oscillator for a transmitter.

http://www.solorb.com/elect/hamcirc/sidetone/index.html

Tone generator

Tone generator

PIC16F84 based with source code

http://www.qsl.net/yo5ofh/pic/tone_generator.htm

Tone generator

Tone generator

for CW operating with SSB TRX

http://www.intio.or.jp/jf10zl/cwto.htm

Tone generator

Tone generator

http://www.reconnsworld.com/audio_tonegenerate.html