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Today, I visited a gentleman I met over 25 years ago who is an inventor, experimenter, and crystal radio builder. Some of the radios he showed me are over 40 years old, and he has published a book on crystal radios. He has a second edition now. Let me introduce Mr. Ke Edwards, who will walk us through some of the radios he built. The first one is a broadcast band radio with coils wrapped on PVC pipe linked to a standard capacitor. The second one also operates in the broadcast band with basket weave coils and a homemade capacitor made from aluminum and plastic separators.