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[TowerTalk] Nested 4SQs

To: "" <>
Subject: [TowerTalk] Nested 4SQs
From: Rudy Bakalov <>
Date: Sun, 14 Oct 2012 16:16:44 -0400
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Now that the elements design seem to be established, I was wondering if anyone 
had modeled the impact of nesting 4SQ structures around each other. I was 
wondering what the impact of having a 80m 4SQ inside a 160 4SQ would be.

Although I have plenty of land, I'd hate to run large feed and control lines 
all over the place unless I have to. Would be great to have "concentric" 4SQs 
with the switching and feeding all in the center. Was thinking of having a 45 
deg offset between the inner and outer structures. This looks so much neater, 
but does it work?

Along the same line, what is the impact of having a 90' tower with a bunch of 
beams in the center of a 4SQ.

I am really looking for actual computer models or first-hand experience.  I am 
familiar with the tower suspended array in the ARRL Antenna Book and I am sure 
it works, but the real question is how much of a compromise this is and if it 
is worth it.

Rudy N2WQ


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