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Mobile Slim Jim Antenna?

Discussion in 'Amateur Radio Antennas' started by Nursecosmo, Sep 27, 2010.

  1. Nursecosmo

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    Oct 14, 2009
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    Considering the desirable low radiation angle and resulting high gain from a Slim Jim type antenna, one would think that someone has mounted one in a mobile application. I've searched the net but can't find anything about mobile Slim Jims.

    In my mind at least, it would seem to be a fairly simple operation to design and mount one on the roof of a vehicle. Besides a change in SWR (which should be adjustable), in what negative way would it interact with the metal roof? Has anyone seen a mobile application of this antenna?

  2. W5LZ

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    Crotchety Old Bastard

    Apr 8, 2005
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    The first thing that comes to mind is that if that 'Slim Jim' isn't fairly flexible, count on it doing some tree trimming when moving. Which would mean a fairly substantial mount. It's just not going to be a 'small' antenna. If you can live with the mechanical aspects of an antenna of this sort, then have at it. I'm not so sure that an end fed 1/2 wave wouldn't be an easier antenna to live with.
    - 'Doc

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