Nice to see you coming up with that, Rick,
That's exactly my observation that I described in my post a half a year ago:
http://lists.contesting.com/_towertalk/200107/msg00540.html
check out the thread there.
I haven't seen any AB testing results that could really confirm those
modelling results and challenge the widespread stacking rules of thumb...
One of the first things when getting so far with my tower project is to
carry out AB tests on those stacking distances...so far I can say that we
are very pleased with our 6 over 6 OWA stacks on 10m and 15m at ES9C. Both
have 0.5 wl stacking distance. Top heights are 25 and 28m respectively and
on average 1-2 S units are reported for the stack over higher beam and 2-3
over lower beam by US stations.
73
Tonno
ES5TV
----- Original Message -----
From: "Rick Dougherty" <NQ4I@compuserve.com>
To: "TowerTalk" <TowerTalk@contesting.com>
Sent: Friday, January 04, 2002 9:37 PM
Subject: [TowerTalk] stacking distances
>
> Time for another topic...I was playing with YT the past few days with the
> updated files (tnx N4ZR and W4DD) and I happened on the following...a 3
> high stack with 0.5 wavelength stacking distances had an appreciable more
> gain
> than a 4 hi stack with 0.75 or 1.0 wavelength spacing...and comparing 4 hi
> stacks again the 0.5 wavelength spaced array had more gain....I am faiirly
> sure that the pattern with 0.5 spacing is a lot cleaner too....anyone out
> there have additional opinions on this observation?? thanks de Rick nq4i
>
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________________________________________________________________________
This list is sponsored by the new eHam.net Store. When you buy products
like ICE filters, Array Solutions StackMatch, or M-Squared Antennas from
the eHam Store for the same price you pay direct, a portion of the sale
price goes to support this list. Check it out at http://www.eham.net.
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