Topband: beverage lobes

[Larry Molitor]

"Richard (Rick) Karlquist" <richard at karlquist.com> wrote:I once tried a 1300 ft beverage.  It needed
no terminating resistor to get very high F/B ratio because the 
signal to be rejected was totally dissipated by the time it bounced
off the end and traveled another 1300 ft to the feedpoint.  YMMV.
YMMV is certainly the concept in play here. I have run Beverages from 180 foot long all the way out to 1100+ feet in length. I can see definite improvement for every additional foot of length. The observed difference in usable performance between a 550 footer and an 1100 footer is about the same as the difference between a 500 footer and the TX vertical. 800 footers are very much inferior to the 1100 footers. Proper terminations are required for optimum performance in EVERY case here. I could run out to 2000 feet but haven't because I can hear so much more than I can work with the 1100 footers, I don't want to be even more depressed!

Perhaps the difference is due to ground. My dirt is about as bad as you can get and still call it dirt. The top soil varies in depth from a few inches to a few feet with a mix of solid basalt, river rock, sand, and caliche underneath. My verticals are barely better than low dipoles most of the time.

Yes, YMMV!!

73, Larry

Larry - W7IUV 
DN07dg - central WA
http://w7iuv.com

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