Did you just feed upper and lower on 20m? Unless the undriven antenna causes
some bad interaction, using all three on 10m and 15m and skipping the middle
on 20m could be a good triband stacking solution!
John KK9A
To: TOWERTALK@contesting.com
Subject: Re: [TowerTalk] Triband Stacking Distance or antenna height?
From: Bill via TowerTalk <towertalk@contesting.com>
Reply-to: Cqtestk4xs@aol.com
Date: Mon, 23 Feb 2015 20:02:37 -0500
I've had lots of experience stacking antennas....from monobanders, to
duobanders for WARC to tribanders.
I wouldn't think twice about putting up a stack for any band, if money and
labor was not an issue. I'd rather have two three element Yagis stacked
than on e 6 el at the top height. Why? Flexibility is the answer, as well
as maintenance.
Triband stacks? I had them out at KH6 at around 90/60/30 (KT36XA). Yes,
the middle one was probably not really a big contributor for gain on 20,
but the signal brought endless piles of EU and NA on that band, since the
90
over 30 was still in effect. 15 and 10 were where they really shined.
Granted I was on a nice big hill, but I could definitely tell how much
better
the stack worked rather than just the top antenna. I also have the same
stack at my place now and although it is down a little from the 4 high
monoband stacks on 10, 15 and 20, it still is a very able performer.
If the sale of my house goes through the triband stack will be employed at
my new QTH in the Caribbean.
K4XS
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