Steve:
I just ran a model on a 5 el. 20 mtr. beam I had in
my file, on a 40' boom. Here are the results:
With Reflector Without Reflector
Gain 9.84dbi 9.29dbi
F/B 26.0 db 9.29 db
The antenna was modeled in free space.
The feedpoint impedance values did not change appreciably.
Hope this helps.
73
Tom K0SN
Porterfield, WI
----- Original Message -----
From: K7LXC@aol.com
To: towertalk@contesting.com
Sent: Saturday, February 28, 2009 7:37 AM
Subject: [TowerTalk] Missing reflector
Howdy, TowerTalkians --
Suppose you had a typical 5L 20M beam and the reflector fell off. What
is the real story as far as gain goes? Is it a drastic drop or what? Any
other
implications? I obviously don't do antenna modeling or I would have an
answer already. TIA.
Cheers,
Steve K7LXC
TOWER TECH
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