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dabeaner I remember the crystal sets....there was no power source but you could listen to the radio....woohoo, and they think that all this techie stuff is new.
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They are interesting, but do present problems. Sorta like wireless electricity, in general. I think a better study would be zero point energy. Now that would be a technology to master!
Are they reviving the "crystal set"? I use to make them when I was a kid with a germanium crystal and contact wire, along with wrapping wire around an oatmeal carton, earphones, etc.
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