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"Randy or Sherry Guttery" wrote in message
... Brenda Ann wrote: Variable tapped coil, rather than tuned. I've built crystal sets when I was a kid that used a very crude form of this, with a fixed cap across it made from wax paper and aluminum foil, and a slider made of brass that was screwed onto a board and just scraped across the coil's windings to tune the stations. Wound on a Quaker Oats box (can?) by chance? toilet paper roll! |
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