rf - What does the rectifier do in a crystal radio? - Electrical Engineering Stack Exchange
High Sensitivity Germanium Diode : United Nuclear , Scientific Equipment & Supplies, United Nuclear , Scientific Equipment & Supplies
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10 pcs. D18 Crystal radio Germanium Diodes, Large Glass Vintage , 5 varieties | eBay
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Make a razor blade diode
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Technical Trivia by Dr. FB / Why we don't use a silicon diode in a crystal radio?｜Jul.2020 - Monthly FB NEWS
