Topband: Skirted vertical antennas for MF broadcast

[James V Redding PE]

And then there is this:

https://en.wikipedia.org/wiki/Umbrella_antenna#/media/File:Main_antenna_feed_Anthorn.jpg

If you had one of these in your backyard, I am sure the entire state would
decide it was causing TVI.  19.6 khz.

Jim 'VEZ

On Thu, Apr 7, 2022 at 8:19 PM Grant Saviers <grants2 at pacbell.net> wrote:

> I think the disc-cone is a close relative. There is one of these on the
> bow of the Iowa BB in Long Beach.  During a tour by W6HB, I was told
> they would have 25+ full duplex TTY circuits open at one time on this
> and 4 whip antennas mounted on the superstructure.
>
> Another piece of battleship antenna trivia is how they patterned
> antennas without any of the computer techniques now available.  They
> made about an 8ft long fully detailed model in brass and excited
> antennas under test at UHF+.
>
> Grant KZ1W
>
> On 4/7/2022 09:44, Kenneth Grimm wrote:
> > The first time I saw one it was called the Folded Umbrella and was
> > popularized by the late WB5IIR, John Haerle.  He wrote an article for HR
> in
> > May of 1979.  He also described it in his book, "The Easy Way."  I've
> been
> > using my own version of the basic design on 160 for several years.
> > 73,
> > Ken - K4XL
> >
> > On Thu, Apr 7, 2022 at 12:24 PM Mark - N5OT <r-emails at n5ot.com> wrote:
> >
> >> Conical Monopole
> >>
> >> Say that fast 3 times:
> >>
> >> Conical Monopole
> >> Conical Monopole
> >> Conical Monopole
> >>
> >> Right.  The first time I saw one, it was called a Folded Unipole. My 160
> >> support can be probably 80' or 24 meters.  I have considered my options
> >> for broad-banding it for 160.  This is one of the choices.
> >>
> >> Mark N5OT
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> >
> >
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