Topband: Beverages

[john battin]

I put up the killer beverage to europe... two staggered 1500' phased with two more spaced 5/8 wave.  It was useless ....  I shortened them to about 700 feet and it worked fine but not much better than my reference phased pair or 580 footers. Eventually I removed the staggered ones as they did nothing but improve f/b and did nothing for signal to noise. I still use a pair of 1500 footers to Japan; a few times a year they are better than shorter ones. I am a believer in the vertical angle issue. Switching lengths is interesting if you were in a part of the world where there were areas of interest at vastly different distances.

John 
 
> Date: Thu, 15 Jul 2010 02:19:33 +0000
> From: k3bu at optimum.net
> To: topband at contesting.com
> Subject: Re: Topband: Beverages
> 
> > k3bu at optimum.net wrote:
> > > I have seen situations when long Bev (1600') on a sloping 
> > terrain was worse to Eu than Inv Vee. When shortened to about 
> > 600' it was a "killer".
> > > Then long phased Bev at W8LRL were hearing JAs while short 
> > ones were "dead". 
> > > Makes big difference in a contest. 
> > > 
> > > 
> > 
> > This inspires me to a (perhaps under-educated) pitch for 
> > exploration of 
> > a novel antenna: An Adaptive Elevation Angle MEMS Beverage.
> > 
> > 
> > Seriously, I wonder what challenges would be realized in trying 
> > to use a 
> > set of mechanical relays to incrementally lengthen or shorten a 
> > Beverage 
> > to sweep elevation angle, albeit while distorting F/B and 
> > beamwidth.... 
> > I'd certainly purchase the journal that published such a paper.
> > 
> > 
> > 
> > 
> > 73,
> > 
> > - Josh / KF4YLM
> > 
> 
> This can be done by breaking say 1500 ft Beverage into 3 segments with two relays inserted at 500 and 1000 ft points, switching between next wire segment and termination resistance.
> 
> Some pictures of W8LRL installation are at
> http://www.teslaradio.org/w8lrl.htm
> white posts support phased and staggered Beverages. Also pictures of RX vertical 8 array.
> 
> 73 Yuri K3BU.us 
> _______________________________________________
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