Towertalk
[Top] [All Lists]

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 15:42:21 -0700
List-post: <mailto:towertalk@contesting.com>
On 4/26/19 2:33 PM, Michael Tope wrote:
It might be worthwhile to model part of the geometry (the smallest triangle or square in the structure formed by the legs and braces of the tower) and then move it around in Z (up and down vertically) and X (along the boom axis) to see how much it distorts the pattern and how much current get induced in that basic geometric element. If that in and of itself creates a lot of distortion, then you may be in for a difficult time. I suspect, however, it will just be a minor blip. If the latter is true, then I would scale up the size of that basic element to see how big it has to be before it creates any significant distortion in the yagi pattern. That may provide a sense of how much margin you have. Thirty inches is not even the length of a 2 meter Yagi element, so I suspect it is going to take a much larger cross section to cause trouble.

You could start there and work your way up to a more detailed model of the tower.

73, Mike W4EF............



That's a decent strategy, Mike.

if a flat 30" (or whatever) triangle in between the elements at a notional location doesn't have a marked effect, then the tower probably won't.

That's only 3 segments to add to a model so it's pretty fast.





_______________________________________________



_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk

<Prev in Thread] Current Thread [Next in Thread>