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Beverages close to vertical TX antennas

To: <towertalk@contesting.com>
Subject: Beverages close to vertical TX antennas
From: jay@dunestar.com (Jay Terleski)
Date: Fri, 31 Jan 1997 17:36:40 -0600
Scott Detloff wrote:
> 
> I have some concern on the closeness of my propossed Beverages and my full
> size vertical.
> The verical has 4 elevated radials, but will soon be ground mounted.  One of
> the Beverages will run within 65' of a 170' tower, and about 70' away from
> the vertical.
> 
> Reading ON4UN's book, it says "Large vertical antennas re-radiate strong
> signals and will upset the directivity pattern of Beverage antenna  if the
> antennas are seperated by less than 1/4 wavelength."
> 
> I'm looking for your "real world experience" of how much this will really
> effect performance.  After the contest last weekend, I'm really looking at
> the posibilities of running a few 800-1000' Beverages in the next few
> months.  Any insight you can give would be greatly appreciated.
> 
> 73...Scott
> 
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I have had up to 6 beverages working at a time spread around 5 acres.

I had one of them which was within 45 feet of my tranmitting antenna, It
was the one which never seemed to have much F/B and noise rejection.  It
would work, but the others worked noticably better.  I moved it this
season to be about 150 feet away from the transmitting antenna.  Much
better now.  Its got more F/B and its quieter.  Matter of fact I can
hear JA on it about as well as the JA Beverage.  So I'm convinced that
it does make a difference.

Hope this real world example helps.

Jay, WX0B



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