QRP Station > Builder's Corner
Carbon Microphone as a Crystal Radio Detector
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vu2nan:
A vintage telephone carbon microphone, which possesses multiple contacts between carbon granules and metal, was tried out as a detector replacing the germanium transistor in my series-tuned, shunt fed crystal radio.
More details at
https://nandustips.blogspot.com/2019/08/carbon-microphone-as-crystal-radio.html
73,
Nandu.
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