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Thread: Want to build a rotatable dipole

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  1. #1

    Default Want to build a rotatable dipole

    I have an old Mosley tri bander that I really don't have room for.. I would like to build a multiband dipole from the traps and elements
    Any info on where to start would be greatly appreciated..
    Thanks
    Bruce
    KC9RJI

  2. #2

    Default

    Not familiar with the antenna, but does it have a single driven element for all three bands? If so, then the place to start is to simply strip off the director and reflector and start tuning from there.
    vy 73,

    Casey, TI2/NA7U
    My 30M Softrock Lite II on WebSDR (usually up weekends)


  3. #3

    Default

    Usually there's nothing to tune. If it's a Mosley TA-33, for example, they sell that as a rotary dipole as model number TA-31. It's just the driven element from a TA-33.

    "Tuning" is accomplished only by adjusting the lengths of the aluminum tubing, which are adjustable by design. All you'd really need is a bracket to mount it on a vertical support mast as opposed to the original horizontal boom. Such brackets are available from DX Engineering and elsewhere. Most Mosley triband traps are 10/15m traps built into a single device on each side of the element. Piece of cake.
    A government which robs Peter to pay Paul can always depend on the support of Paul.

    -- George Bernard Shaw

  4. #4

    Default

    Which model Mosley tribander?
    A government which robs Peter to pay Paul can always depend on the support of Paul.

    -- George Bernard Shaw

  5. #5

    Default

    Its the classic 33 and I should have mentioned that I want to keep it rotatable and possibly still cover all three bands.

  6. #6
    Join Date
    Mar 2006
    Location
    Cincinnati, Ohio
    Posts
    858

    Default

    Just put up the radiator.

    73,
    Bill, WA8FOZ

  7. #7
    Join Date
    Mar 2009
    Location
    Carmel, IN
    Posts
    5,256

    Default

    I have exactly this (from unknown tri-band yagi) in my attic and it works well. I don't rotate it as it is near the peak of the attic.
    Leroy
    Be sure to listen for my beacon on 28.278.8 MHz

  8. #8
    Join Date
    May 2003
    Location
    Everett, WA USA
    Posts
    5,050

    Default

    Quote Originally Posted by WA4OTD View Post
    I don't rotate it as it is near the peak of the attic.
    In that case, just rotate the house.

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