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Umbrella Antenna

Discussion in 'Amateur Radio Antennas' started by HomerBB, Apr 23, 2018.

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  1. HomerBB

    HomerBB Sr. Member

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    I imagine most of us have heard of the 'umbrella antenna'.

    "an umbrella antenna is basically just a vertical monopole antenna that is top loaded with a large end hat. The hat consists of a number of radial wires that slope away downward from ".



    Well, sitting in Sunday School this morning knowing the rain was souring an afternoon of antenna tinkering stimulated an idea to build an umbrella antenna. It seemed appropriate.
    So I got home and took care of a few things with my wife and went to work on my antenna.
    From behind my pickup truck seat, and from the garage I gathered some materials I would need. I went to the shop for a piece of coax, analyzer, measuring tape, drill and bit, and a roll of tape. A couple small alligator clamps, too.
    After a while of drilling, measuring, attaching feed line, adjusting and measuring with the analyzer I had an antenna with an SWR curve of 1.5:1 at the upper end of the band and 1.2:1 at the lower end. No one was on the air so I will have to try it out later. 20180422_203035-01.jpeg 20180422_203203-01.jpeg
     
    Shadetree Mechanic likes this.

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