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Re: [TowerTalk] Reflector in the back of shunt tower for 160m

To: VE6WZ_Steve <ve6wz@shaw.ca>
Subject: Re: [TowerTalk] Reflector in the back of shunt tower for 160m
From: Ignacy Misztal <no9e@arrl.net>
Date: Thu, 27 Jan 2022 11:04:19 -0500
List-post: <mailto:towertalk@contesting.com>
Steve,

Excellent work and sorry for missing it.

I was thinking about a quick design. Elevated radials, not 100 ground ones.
T coming from top of tower on ropes. Also 30m spacing so SWR changes less
compared to the 20m and can be handled without extra matching by a tuner.
If 4.5 db becomes 3 db it is still OK. If it drops to 1 db, not worth the
effort. Perhaps I will experiment for the upcoming CQ 160 contest and
report.

Ignacy, NO9E

On Thu, Jan 27, 2022 at 10:43 AM VE6WZ_Steve <ve6wz@shaw.ca> wrote:

> Yes.
> I wrote this paper about it. I talk about about modelling, design,
> construction and about tuning the array:
> https://drive.google.com/file/d/1eVklkZtlJW93JIJ9oDqbCyl-Jkik6YEX/view
>
> 73, de steve ve6wz
>
> On Jan 27, 2022, at 8:17 AM, Ignacy Misztal <no9e@arrl.net> wrote:
>
> I am trying to get some gain on 160m where currently I have a shunt fed
> 100m tower. It works well but is not spectacular.
>
> I modeled a reflector some 100 ft away from the tower. Either as inv L with
> one elevated radial or T with two elevated counterpoises. EZNEC shows up to
> 4 dB gain as a reflector and up to 3 dB as a director. Is this realistic?
> Has anybody done anything like that?
>
> Ignacy NO9E
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