12 Apr 2014

Simple 3 transistor DSB transceiver for 28MHz

Stephen Walters G7VFY has reminded me of a simple 28MHz DSB transceiver from Japan . I think I have mentioned this before, but it is so simple and elegant that a second outing is called for.
3 transistor DSB transceiver
See: http://www.cqpub.co.jp/hanbai/books/15/15061/15061_p.180-181.pdf .
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2 comments:

  1. PA2RFSun Apr 13, 12:44:00 pm GMT+1

    Nice design Roger, it's a pity the values for the coils are not clear. 73 all the best, Ron PA2RF

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  2. UnknownTue Jul 05, 10:28:00 pm GMT+1

    I built it with great success
    IZ3EYY
    See youtube 3 transistor qrpp transceiver...bye!

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