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Using a 9:1 unun for RV antenna

Discussion in 'On the Road' started by N2JDK, Nov 16, 2017.

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  1. N2JDK

    N2JDK Ham Member QRZ Page

    Just wondering if anyone actually has tried using an unun for their mobile vertical antenna? I would like to use either my 75m hustler or my Eagle one push up. Coax fed . (Both mounted to the ladder on the rv ) As I understand verticals on vehicles have a very low impedance which makes them difficult to tune. I don't operate on the road and when in rv parks the real estate is somewhat limited, so ground radials are not very practical when only staying for a few days.
    Any thoughts appreciated.

    Hoyt n2jdk
    Bokeelia Fl.
  2. KF5UMC

    KF5UMC Ham Member QRZ Page

  3. KF4ZGZ

    KF4ZGZ Ham Member QRZ Page

    The first thing I would try is a simple shunt coil.
    That being said ..... I have built the EARCHI endfed and used it with good results.
    I have even Insulated a mast from the ground, and attached the balun feed point to the mast and used the mast as a radiator.
    Worked 15m, 18m, and 20mfor an entire dx contest like this.
    Sooooo, try your idea, it might work.

  4. N2JDK

    N2JDK Ham Member QRZ Page

    Well, I finally picked up a 9:1 balun core (with windings ) and will be trying it out as soon as I can. Thanks for the replies, we'll see if it works.
    Hoyt n2jdk

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