Pete, N4ZR wrote a great article in the July/August
1996 NCJ title titled, "A Preliminary Look at
Improved Stack Spacing for Short-Boom Tribanders".
That might also provide insight as to specifics.
Hope this helps ...
73 de Billy, AA4NU
>From: Gary Slagel <gdslagel@yahoo.com>
>Date: Sat, 19 Jan 2008 08:14:30 -0800 (PST)
>List-post: <mailto:towertalk@contesting.com>
>
>More questions from a yagi stacking rookie!
>
>I've been using the HFTA software to try and get an
>idea of the optimum distance to stack a couple yagis
>for best performance. I'm stacking 10/15/20
>tribanders for increased performance. I was really
>surprised that on most bands the optimum performance
>seems to be with them separated by only about 10'...
>for instance 65' and 56'! I expected it to be more
>like 20' to 30'!
>
>I wonder how this jibes with folks with real
>experience?
>
>Thanks,
>Gary
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