Ground being dry or wet underneath has a lot to do with it. Also the
acidity of rotting leaves leaching into the ground surface changes its
characteristics. This is a seasonal boost that wears away through the
spring and summer.
73
-----------------
Guy Olinger, K2AV
Apex, NC, USA
----- Original Message -----
From: "alsopb" <alsopb@gloryroad.net>
To: <towertalk@contesting.com>
Sent: Sunday, October 21, 2001 7:33 AM
Subject: [TowerTalk] Beverage f/b
>
> Guys,
>
> I'm beginning to think that leaves on the trees is adversly affecting
> the directivity of my beverages.. or the phase of the moon or...?
>
> All 7 of them don't seem to show the directivity on 160/80 that they
> did last winter.
>
> Two are two wire beverages (one of the pair unterminated, the other
> terminated to ground) and three are single wire with resistive
> terminations. All 7 seem to suffer from the same directivity loss.
>
> I've checked all joints, switching paths and even measured the
> terminating resistor values (at DC of course). The Z values as
> measured on an Autek RF-1 on either side of the transformers agrees
> well with last year.
>
> The one thing I can't readily check is the ground side performance.
>
> I'm wondering if it is just too early in the season to expect them to
> perform or because they are run under a canopy of trees which still
> have leaves.
>
> Any ideas?
>
> 73 de Brian/K3KO
>
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> -----
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>
List Sponsored by AN Wireless: AN Wireless handles Rohn tower systems,
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supporting towers up to 100 feet for under $1500!! http://www.anwireless.com
-----
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