• Droechai@lemm.ee
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      13 hours ago

      We never had that kind of ads in our books, they came in catalogues I sadly never got to order from even if the "make your own radio"kit with crystal always looked awesome

      • SplashJackson@lemmy.ca
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        13 hours ago

        Those radio kits with the crystals actually worked, I remember building one with my pa. I forget the principle behind them