Lm567 cw decoder2/13/2023 ![]() When you're ready to zero-beat the station calling CQ, press the pushbutton. Connect it in parallel with your speaker or headphones. ![]() Whether you're tone deaf, or just a geezer like myself, you might benefit with this handy little tuning aid. Usually, this is the same tone as your CW sidetone, 500-800 Hz, depending on your rig. Preparing to answer a CQ on CW, and with the RIT off, you slowly tune the received signal until it reaches the magic tone that means "zero-beat". You know the drill, typical on most transceivers. But at some point, I turned into a geezer ( Hey! not an OLD geezer!) and can't seem to find the right tone. I never used to have problems hearing zero-beat when tuning my transceiver. This project was constructed while that call was valid, and you may observe references to it. (click on any picture to see larger version) N5ESE's Zero-Beat Tuning Aid N5ESE's Zero-Beat Tuning Aid
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