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10 Pcs Germanium Diode 1n34a Do-7 1n34 In34a 50ma 60v For Am/fm Radio Detection Diy Electronic Kit - Diodes - AliExpress
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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
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circuit analysis - Can I connect an amplifier to a Crystal Radio? - Electrical Engineering Stack Exchange
![Crystal radio circuit using pairs of diodes instead of ONE 1N34A diode. I was given this circuit to try various diodes instead of relying on the discontinued 1N34A diode availability. The mission was to kit a hundred simple basic crystal radios and give them out ... Crystal radio circuit using pairs of diodes instead of ONE 1N34A diode. I was given this circuit to try various diodes instead of relying on the discontinued 1N34A diode availability. The mission was to kit a hundred simple basic crystal radios and give them out ...](http://www.learnmorsecode.com/help/TWOdiodesBB4.jpg)