Topband: 4SQ around tower

[Tom W8JI]

>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.