[SEDXC] K9AY Loops

[James Streible]

I would like to add my 2 cents worth to what Hal has to say.

I went over and listened to his K9AY the other day and was impressed 
with the Front to Back of the antenna.
I went home and put up one loop, this was all I had room for to get up 
quick, in and East-West direction to try for some of the 160 and 80 
meter operations that are on right now in Africa and the Pacific. I used 
a DPDT switch to change directions for now so I can reverse the null.

This morning I worked the P29 on 80 meters using the loop to receive and 
I could not copy him on my dipole antenna because of the noise picked up 
by the dipole. The K9AY is that much quitter then the dipole at about 60 
feet. I could also hear the VK9 yesterday on 160, though still not well 
enough to work. This morning it also showed much quitter on 30 meters 
listing to the P29.

I am now trying to figure our how I can put up a full K9AY with relay 
switching to get the full effect.


Jim  K4DLI



Hal Kennedy wrote:
> Its interesting how some subjects that have been around a while
> sometimes suddenly pop up and become 'in vogue."  NN4ZZ and K4DLI have
> just added K9AY loops for receive, and three different groups and/or
> individuals have been over to my QTH in the last two weeks to inspect
> mine.
>
>  
>
> As far as I'm concerned, you can't get a better bargain than a K9AY if
> you don't have room for beverages.  They are thirty feet in diameter and
> 25 feet high and they do work.  
>
>  
>
> You can buy the one from Array Solutions for significant bux or you can
> build your own for around $10.  Mine is home brew.  Gary does not
> recommend decoupling beads on the feedline, but I believe they are a
> useful precaution to keep common mode current off the shield.  
>
>  
>
> Anyway, Gary, K9AY, has just published an extensive set of tech notes on
> how to make them, how to use more than one in phase, etc.  All the data
> can be found at:
>
>  
>
> http://www.aytechnologies.com/
>
>  
>
> It's worthwhile reading.  I have spare cores if folks want to wind
> transformers - it takes 5 minutes to make one.  I use 2 turns and 6
> turns, Gary uses 3 turns and 9 turns but our results are the same.  Ill
> be adding a second K9AY soon and phase them with an MFJ noise canceller.
> Can't work 'em if you can't hear 'em.
>
>  
>
>  
>
> 73, Hal N4GG
>
>  
>
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