Dear Gents, before i prepare detailed answer
my propose is to visit page with 160/80 mtr version
http://www.sp3key.com/klub/k9ay_160_en/index.html
Link in my previous post was adequate to 80/40 mtr version
The new 160 mtr version with antenna spacing 20 mtr (1/8 W.L.)
and phase shift 135 degrees is under development/ final testing.
Joe, SP9P
>
> 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
>
> _______________________________________________
>
>
>
> _______________________________________________
> TowerTalk mailing list
> TowerTalk@contesting.com
> http://lists.contesting.com/mailman/listinfo/towertalk
>
_______________________________________________
_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk
|