[TowerTalk] Beverage Antenna

[Herbert Schoenbohm]

Depending on how long the fence is IMHO this act like a long unbalanced 
transmission line with on side grounded thus destroying the wavefront 
tilt ability of the single wire Beverage.  OTOH if you put the Beverage 
90 degrees and used the fence as part of your termination a either end 
you might have a workable system.


Herb, KV4FZ
On 2/3/2015 11:28 AM, john at kk9a.com wrote:
> What happens if the Beverage happens to be parallel to a steel fence?
> Perhaps 10-20' away.
>
> John KK9A
>
>
> To:	towertalk at contesting.com
> Subject:	Re: [TowerTalk] Beverage Antenna
> From:	"Joe Subich, W4TV" <lists at subich.com>
> Date:	Tue, 03 Feb 2015 08:55:15 -0500
>
>
> Anecdotal reports over the years (~ 30?) of Beverage antennas over
> an existing conductive wire/fence indicates that performance lags
> that over moderate earth.  The degradation comes from two apparent
> modes: 1) the (typically larger) fence picks up noise and couples it
> to the Beverage and 2) the the conductive nature of the fence upsets
> the velocity factor (wave tilt) resulting in a shorter effective
> length with lower signal strengths and broader patterns.
>
> 73,
>
>    ... Joe, W4TV
>
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