TopBand: Re: [TowerTalk] Phased Staggered Beverages

[Frank Donovan]

Bill,
Yes, WW2Y presented an outstanding description of his three element
staggered Beverage array at the Dayton Antenna Forum.  He stated that this
system provides extraordinary front-to-back ratio compared to a single
Beverage, but it took some extensive "tuning" to achieve this performance.
I have not yet constructed a copy of his array, but someday I probably
will!

Peter's system consists of three close spaced Beverages (perhaps 8-10 feet
sideways spacing between each) with each of the three Beverages staggered
by 1/4 wavelength (135 ft).  His unspecified feed network used a power
divider and phase shift network that received 1/2 of the received power at
0 degrees phase from the middle Beverage, 1/4 of the power with 90 degree
agging phase from the front Beverage and 1/4 of the power with 90 degree
leading phase from the rear Beverage.  In concept this network might be
simply constructed with coaxial cables delay lines and RF transformers.

On Tue, 21 Oct 1997, Bill Fisher - W4AN wrote:
 
> Frank,
>
> Thanks for the information on the close spaced beverages.  I heard from 
> several friends that WW2Y is using close spaced, staggered, phased 
> beverages.  One beverage started 1/4 wave behind the other and phased.  I 
> would be interested in receiving any information either first or second 
> hand on these beverage arrays and their performance.  I know Peter did a 
> presentation at Dayton on these arrays this year but I have not received 
> the transcripts yet.  Has anyone else used this type of system or any 
> other comments on phased beverages?
> 
> Thanks
> 
> Bill, W4AN



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