[Antennas] Loop vs Dipole

[Gene Mason]

Bill,
   Others have mentioned problems like that, one guy moved the antenna to a 
new qth location in another state and it didnt work at all..lol
   My driven el is 140 ft, dir is 135', ref is 145 '
   I use a 4:1 balun, at apex, rg58u, 75 ft or 100ft , it doesnt seem to 
care.
   I can switch feed lines to driven el or to ref, with about 15 db change 
in direction, add 1/2 wave coax to one,  if you drive 2 of the elements, i 
get 3 to 5 s-units better reception, compared to an inverted vee I use for 
comparison, from Asia and  N Europe.
   I use it on 40m, performance is better on 20m, where i can usually get 
thru ssb pileups on 2nd call, on 15m I am breathless at the performance, 
regularly get ...  exceptional signal reports from my 100w.
Gene KZ5V
  PS  loops are 1/2 wave apart, and in the oak trees and pine trees, where 
in theory, it shouldn't work at all.

From: Bill Aycock <baycock@direcway.com>
To: Gene Mason <kz5v@hotmail.com>, antennas@mailman.qth.net
Subject: Re: [Antennas] Loop vs Dipole
Date: Fri, 03 Oct 2003 07:47:22 -0500


Gene-
what band are you working, and what are the dimensions of your loop?
I have a problem with the downhill phenomenon- I live on a point (toward the 
South), and, depending on the wind, I cover either the Virgin Islands or 
Yucatan.
Thanks- Bill

At 12:14 PM 10/3/2003 +0000, you wrote:

>Geo
>  I feed my loop at the apex, at the high current point. When I was in grad 
>school, that was the point that radiated, I sugest it still is. Also some 
>suggest the feed at the top results in vertical polarization, at the bottom 
>center, horizontal polarization. Is it possible that insufficient height 
>above ground is working against you? I hope you are using a balun with 
>proper ratio. and not using open wire feeders.
>   My configuration works well on all bands, It worked so well for me that 
>I have 3 loops phased. My performance this week, included a 15 minute chat 
>with Taiwan, a QSO with a station in Viet Nam, several S-9+ reports from 
>Japanese stations on SSB, reports from Europe and Eurasia that I was the 
>loudest station on the band. And all this from my 100 w old Kenwood.
>   On second thought, I am on a ridge looking north, that slopes about a 
>thousand feet downhill to the North. My array is fixxed at magnetic North. 
>my modeling software suggests that the electrons roll downhill and pick up 
>inertia. Also, there is the pine needle and oak leaf factors, as I am in 
>the immediate vicinity of several.
>Regards,
>KZ5V   aka Gene Mason

Bill Aycock - W4BSG
Woodville, Alabama

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