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Author Topic: Tarnished Silver as a Crystal Radio Detector  (Read 1006 times)

Offline vu2nan

  • Midshipman
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  • Posts: 58
  • Country: in
  • Nandu - VU2NAN since 1977.
    • Amateur Radio VU2NAN - Nandu
Tarnished Silver as a Crystal Radio Detector
« on: August 19, 2019, 16:05:36 UTC »
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.

Offline ac9xh

  • Petty Officer
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  • Posts: 13
  • Country: us
  • Love CW and QRP. it gives me a purpose
Re: Tarnished Silver as a Crystal Radio Detector
« Reply #1 on: February 13, 2022, 01:25:45 UTC »
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