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14.7456MHz crystal

Discussion in 'Electronic Components' started by Marcellus.Pereira, Jul 4, 2007.

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  1. Hey, ALL.

    I'm facing a problem to get some 14.7456MHz crystal here, in Brazil.
    Please, could someone sell me one or two pieces?

    Thank's a lot,

    Marcellus Pereira
  2. Salmon Egg

    Salmon Egg Guest

    I thought Brazil was the major source of natural quartz. Get a piece, cut it
    with a string saw. Then grind and polish to frequency.

    -- Support the troops. Impeach Bush. Oh, I forgot about Cheney.
  3. They likely did that in the thirties, but I see no trace that hobbyists
    ever really made their own crystals to any even mild extent.

    After WWII, it was common to grind crystals a tad, because there were all
    kinds of war surplus crystals that were really cheap, and were either not
    quite at the needed frequency, or weren't particularly useful because people
    were already using the frequency with the unground crystal. But that was the
    era of FT-243 crystal holders, that you could easily unscrew to get the
    blank out. More recent holders are far less conducive to that sort of thing.

    But there is a big difference between raising the frequency of a properly
    ground crystal a tad and starting from scratch. One fo the limits to
    grinding is that you need a nice well-balanced quartz, and getting a suitably
    thin and even blank in the first place is likely problematic for most.

    Then they'd have to deal with making some sort of holder for the blanks.

  4. Your name *really* tells something about your sense of humour...

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