[Elecraft] OT: HF discone

[Jim Rhodes]

I have used the one in Arizona. You have to log in at the gift shop in the
museum, then just hook up and go. Made contacts all over the country on
several bands. No tuning needed, flat across the bands.

Jim Rhodes
K0XU

On Fri, Dec 7, 2018, 16:44 Ken G Kopp <kengkopp at gmail.com wrote:

> There is/was an HF discone at a missle silo in Southern AZ that has/had a
> coax cable available for public use.  Just drive up and connect your mobile
> rig.  (:-))
>
> There's another for HF use at the FAA aircraft control center in SLC.
>
> 73 !
>
>
> On Fri, Dec 7, 2018, 15:30 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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