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Tarnished Silver as a Crystal Radio Detector

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vu2nan:
A fully tarnished, shiny black silver artefact was tried out as a detector in place of the germanium transistor in my series-tuned, shunt-fed crystal radio.

More details at

https://nandustips.blogspot.com/2019/08/tarnished-silver-as-crystal-radio.html

73,

Nandu.

ac9xh:
i have used gilette shaving blades, lead melted with aluminum, and also some iron.
not all gave good performances but all were able to perform as a PN junction for rectification,detection.

depends on your ground and the quality of your crystal headphones.

73
David
ac9xh

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