[TowerTalk] K9AY loops-- phased

[FISCHER,GREG]

I was wondering about 4 loops on one support giving 
directivity every 45 degrees vice 90.

Greg
AB7R


On Tue, 19 Dec 2006 08:02:40 -0500
  Jim Jarvis <jimjarvis at optonline.net> wrote:
> 
> 
> Joe, SP9P's report on the sp3key quad-phased K9AY loops 
>is
> interesting, and prompts questions.
> 
> 1)  Has anyone modelled this?  What is the resulting 
> pattern, in any one direction?
> 
> 2)  I would assume that the pattern is tightened, and 
>f/b
> improved.  Does this result in front-side coverage 
>holes?
> 
> 3)  My crossed AY loops worked ok...and had deep nulls, 
>but
> only very seldom did an offending station land in one. 
> As
> a result, I concluded that ONE AY loop, rotatable, was 
>better.
>    Is that same effect noticed at sp3key club?
> 
> 4)  The discussion doesn't talk about frequency.  Yet 
>the loop
> terminations need to vary, to optimize performance at 
>3.5 or 1.8.
> What provision is made for 'tuning' the loop 
>termination?  
> 
> N2EA
> 
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