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Re: Topband: 4SQ around tower

To: <topband@contesting.com>
Subject: Re: Topband: 4SQ around tower
From: "Tom W8JI" <w8ji@w8ji.com>
Reply-to: Tom W8JI <w8ji@w8ji.com>
Date: Mon, 7 Dec 2015 12:48:39 -0500
List-post: <topband@contesting.com">mailto:topband@contesting.com>
I am in the process of clearing land for full size 80m 4SQ. I have two questions for the group:

1) How much and what kind of degradation should I see if I place the 4SQ elements around my tower. The tower is 90' and has a 4 el 40 m yagi at 90' and 6 el tribander at 105'. Currently I have no plans to detune the tower, but do have plans to use it as a 160m TX antenna.

2) If the consensus is to move the 4SQ away from the tower, how far should I move it? Also, in what direction should I move it with respect to the W and S elements of the 4SQ.

What happens depends entirely on how the tower behaves on 160. It might cause great harm, or it might have no effect at all. There isn't a way to tell without either testing it or modeling it without EVERY metallic guy line and antenna accurately included in the model, along with ground points.
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