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FA unbuilt p-box shortwave regen receiver

Discussion in 'Electronic Basics' started by pv, Jun 24, 2005.

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  1. Tom Biasi

    Tom Biasi Guest

    Hi Jon,
    I don't know how old you are but the first kit I ever built was a crystal
    set. I was about 10. I remember having my Dad run a long wire to a tree and
    hooking it up to the set.
    I grounded another wire to the radiator pipe.
    I moved the slider across the coil in vain all day, but at night I heard
    "WABC New York" a thing I will always remember. At least I have remembered
    it for 46 years.
  2. It wasn't my first project, but close to it -- I built a crystal
    radio, too. However, in my case, I when to a rock show and bought
    some galena; melted some lead into a small cap which held the galena
    crystal I selected; used a needle to touch it for a 'diode'; wired my
    antenna coil on a toilet paper tube with magnet wire; got a small
    cylindrical magnet and two think sheets of steel for diaphragms, wound
    a tiny coil for deflecting it; made myself my own earphones that way;
    and mounted all this onto a wooden block. It took some adjustments
    (winding the coil several times, struggling with the earpiece, etc.)
    but I did get it to work well for the local stations we had with
    broadcasts at or above 5kW in the daytime.

    I also bought some autunite when I was buying the galena, back then.
    Nice piece of it. Still have it. Degrades everything it sits on,
    though. Great for the Geiger counter I later built, using a string of
    NE2s as a 1400V regulator.

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