[TowerTalk] Site Elevation and TOA

[john at kk9a.com]

69 feet and 138 feet are usually very good heights for 20m. I use similar
stacking heights and I have numerious 20m contest plaques. I have never
used HFTA, does it model stacks properly?

A 200' high 10m beam can be a very good antenna however there are many
nulls so there will be times that is a poor antennas.  This should not be
your only 10m beam.

John KK9A



To:	 "Cqtestk4xs at aol.com" <Cqtestk4xs at aol.com>
Subject:	 Re: [TowerTalk] Site Elevation and TOA
From:	 Jorge Diez CX6VM <cx6vm.jorge at gmail.com>
Date:	 Wed, 18 Jun 2014 10:45:06 -0300

Really is nice to see HFTA suggestions

For a project to put two 20M5 in a stack, I was told by several friends to
put
them at 69/138 ft

HFTA show that this is not the best height and they must be not to high,
59/118
seems to be better

Anyway the practice show me that high antennas are good:-)

Most of the people told me that a 10 mts antenna at 200 ft hight will not
work,
but really this antenna pay off all the work

So now, about the 20 mts stack project, I am in doubt if I need a 118 or
138 ft
tower, not sure what to do :-(

73,
Jorge
CX6VM/CW5W