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
>
>
>
> _______________________________________________
> SEDXC mailing list
> SEDXC at contesting.com
> http://lists.contesting.com/mailman/listinfo/sedxc
>
>
>
|