Schematic DIY KitDetektorempfaenger The ancestor of the Rundfunkempfaenger
A crystal is the simplest of all Detektorempfaenger Empfaengerschaltungen. You may even come out with no power. She was with the first circuit, the received radio waves and reproduced audiable. An absolute must for aspiring radio hams! Here are some links to Detektorempfaenger

Here you will find Schematic Circuit Diagram for DIY and further information on Detektorempfaenger
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