Topband: Skirted vertical antennas for MF broadcast

[Frank W3LPL]

Essentially all 1920s AM broadcast stations used roof top antennas
until the 1/4 wave vertical with 120 1/2 wavelength radials became
the standard in the 1930s

73
Frank
W3LPL

----- Original Message -----
From: "Hamilton Hicks,Jr" <ham306 at bellsouth.net>
To: "Mark" <r-emails at n5ot.com>, "Kenneth Grimm" <grimm at sbc.edu>
Cc: "topband" <topband at contesting.com>
Sent: Friday, April 8, 2022 5:57:03 PM
Subject: Re: Topband: Skirted vertical antennas for MF broadcast

Some years ago, I recall an AM station in Washington, DC, having their tower on the roof of a three story building. It was either a unipole or had skirted radials. I want to say that it may have been1340 khz.
HamKB4BR


    On Thursday, April 7, 2022, 12:54:47 PM EDT, Kenneth Grimm <grimm at sbc.edu> 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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-- 
Ken - K4XL
BoatAnchor Manual Archive
BAMA - http://bama.edebris.com
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