Bill (W4ZV) and others, my recollection of W3LPL's presentations on stacking,
at the Dayton Antenna Forum and elsewhere, was that the stack was always equal
or better than any individual antenna. I think this was for two-stacks, like
50/100' on 20, 45/90' on 15 and 35/70' on 10, and the parameter may have
included from Maryland to Europe, not sure about that one. What's your
experience? 73 - Rich, KE3Q
----- Original Message -----
From: Bill Tippett
To: towertalk@contesting.com
Sent: Tuesday, February 03, 2004 6:32 PM
Subject: Re: [TowerTalk] Combining antennas
N4ZR wrote:
>My modeling of other stacks, when the two antennas are perpendicular,
suggests they basically behave like separate antennas then.
Pete, my experience has been fairly good with pointing
my 10m 3-stack at mostly orthogonal angles, but sometimes
you get some very strange results...especially for backscatter
signals. Quite often, I would hear a weak station, and then
switch to the single antenna in that direction, only to have
the signal totally vanish.
The other variable in this is knowing which antenna
height is best for different target areas at different times of
day. You can get a feel for that with VOACAP but there is
probably no substitute for experience.
Been playing with both high-angle and low-angle antennas
on 160 lately and it's amazing to see the difference sometimes.
73, Bill W4ZV
_______________________________________________
See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless
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_______________________________________________
See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless Weather
Stations", and lot's more. Call Toll Free, 1-800-333-9041 with any questions
and ask for Sherman, W2FLA.
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