[Elecraft] Less Than Perfect Antennas

[Don Sanders]

While in Ecuador I tried this skeleton discone. Did not work well.
Actually I had to extend the lower wires from formulas by about 30 %
to get a low <3 swr at design freq, 40 meters. I did not try adding more
wires.
I had several good antennas I made so I did not do further investigations.
Dr. Don W4BWS




On Fri, Dec 7, 2018 at 5:30 PM Charlie T <pincon at erols.com> wrote:

> I wonder if anyone has ever tried, for want of a better name, a "Skeleton
> Cone" which consists of a single horizontal wire connected to the coax
> center conductor and two sloping wires at 45 degrees, in the same plane
> connected to the coax shield.  A true Discone antenna would have many
> (typically eight each) horizontal and sloping elements. I'm guessing many
> of us have used the VHF/UHF version for very wide band coverage, for
> example 144, 220, 432 MHz and even higher.  I know I have one up and it
> performs as well as a regular single band  ¼λ ground plane (unity gain)
> on all three bands with low SWR.  The ICOM version as well as a few others,
> also have a loaded whip for 52 MHz mounted on the bushing that the
> horizontal elements are screwed into.
>
> I'm also guessing the formulas for a true Discone would work for a
> "skeleton" style as well.  I Since it is inherently a wide band design, the
> actual lengths are probably not too critical.  I've heard this type antenna
> described, but I don't remember where or how well it supposedly worked.  It
> obviously requires two supports, high enough that the sloping wires ends
> are off the ground by a bit.
>
> 73, Charlie k3ICH
>
>
>
>
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