[TowerTalk] Nested 4SQs

David Robbins k1ttt at verizon.net
Mon Oct 15 07:52:34 EDT 2012


p.s. an 80m wire 4-square suspended around a 120' tower full of 10m yagis worked ok, but the one that is clear of the towers and other stuff works MUCH better!

Oct 15, 2012 07:39:17 AM, k1ttt at arrl.net wrote:


practical experience with a 40m inside an 80m 4-square shows it was REALLY BAD!

Oct 14, 2012 04:17:14 PM, r_bakalov at yahoo.com wrote:

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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