Topband: Skirted vertical antennas for MF broadcast

Grant Saviers grants2 at pacbell.net
Thu Apr 7 20:18:35 EDT 2022


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
>> _________________
>> Searchable Archives: http://www.contesting.com/_topband - Topband
>> Reflector
>>
> 
> 


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