Ive personally seen the results of HF to 2M QRO (usually legal or close to
it) on trees when concentrated by yagis that were barely above them. Id be
there as a visitor or doing tower/antenna work and sometimes tree trimming.
The top leaves and needles turn brown when they are close enough.
Of course there were no reports of signal attenuation since there was no
reference to compare to. And that brings us full circle to feel good
comments as seen on many forums.
I believe it has been established as fact on here that trees CAN attenuate
RF, even on 160. The variables are many and as with ground systems there are
no one size fits all rules.
Carl
KM1H
----- Original Message -----
From: "Mike Waters" <mikewate@gmail.com>
To: "topband" <topband@contesting.com>
Sent: Tuesday, January 01, 2013 5:36 PM
Subject: Re: Topband: Blessed With Too Many Trees?
This is also the impression that I have. I've read countless experiences
over the years that indicated that trees were no worry on HF. But then
this
thread came along.
I have no other antenna to compare it to, but a tall oak tree supporting
my
160m inverted-L seems to have little (if any) effect on it.
73, Mike
www.w0btu.com
On Tue, Jan 1, 2013 at 11:16 AM, Guy Olinger K2AV
<olinger@bellsouth.net>wrote:
There also remains the nagging idea that some species of tree could be a
lot worse than others for dielectric loss.
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Stew Perry Topband Distance Challenge coming on December 29th.
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Stew Perry Topband Distance Challenge coming on December 29th.
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