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Re: [TowerTalk] MODEL FOR TOWER

To: towertalk@contesting.com
Subject: Re: [TowerTalk] MODEL FOR TOWER
From: jimlux <jimlux@earthlink.net>
Date: Fri, 26 Apr 2019 15:45:55 -0700
List-post: <mailto:towertalk@contesting.com>
On 4/26/19 3:10 PM, Grant Saviers wrote:
Greg,

A couple of thoughts about your question and some observations


5. One rule of thumb I've read for modeling is openings less than 1/10 wavelength look like solid sheet conductor.  I think that is in the EZNEC manual re making wire grids. So I don't think you need a complicated lattice model since your openings are 1/20 WL or less.  I did model the Rohn 65 as a triangular solid sheet and found no interactions with my antennas placed as described.

That's true as far as openings, but you still need to provide segments that can carry "horizontal" as well as vertical currents.
You could probably model most towers as 3 ladders with horizontal rungs.


Did your sheet model have horizontal segments as well as vertical?
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