Dear Gents,
K9AY is great antenna. But big improvement in reception
is obtainable to form it to 4 square.
20 set's was build and 13 are in use with big success
(7 sets are sill available on my stock.)
K9AY & 4SQUARE ...??? Yes !
The magic boxes including Phasing Networks and Switching Directions of 4
Square K9AY Array don't make magic its work perfectly,
remotely controlled from shack via feed line
details here:
http://www.sp3key.com/klub/k9ay_pro/index_en.html
Jay was nice to see you in Friedrichshaffen
cu soon in USA.
I'm happy that all with the Hamation bandpass filter unit
has his happy finale.
best regards
Vy 73's
Joe Wojciech Szeliga, SP9P
> Gents,
> The K9AY new loop is still Gary's great antenna design.
>
> It does require a ground but not 1/4 WL radials only some that are say
> 16 feet long if you need them at all with the required ground rod.
> In the latest incarnation of the K9AY loop that were doing not only do
> we have a ground rod provision but include a nice milled radial ring
> under the fiberlass poles in the mast kit to allow radials to be easily
> attached to beef up the ground if needed, like coral reefs, rocky soils,
> top of your garage roof, etc.
>
> It will perform as the spec. says, and it will allow DXpeditions and
> postage stamp backyards to play with the big boys with beverages if
> installed right.
>
> The loop is a great antenna idea and is like a short two element
> veritical with 25-30+ db of F/B. So the noise is reduced and you can hear.
> It needs to be set up with consideration to the TX antenna like any RX
> array. Furthar away is better. But it still works and doesn't cost an
> arm and a leg!
>
> Next step is to take this very directive element (array) and make it
> into a larger directive array. Which should open some eyes since were
> starting with a directional antenna and not a whip. Gary has agreed to
> help with this design. It doesn't suffer from being an open FET voltage
> sampler antenna, it is already a terminated matched device so it matches
> to your feedline without problems and doesn't need special inductors/
> swamping resistors inside. Another advantage to those of you who know
> about preamps and band pass pre-filters.
> It also is not an open FET or transistor input, it has the properly
> matched band pass filter ahead of the gain stage, so IMD is very small.
> We test it for this.
>
> Don't believe the negativity of Gary's design that you read on TTalk.
> Please. This is a well designed arrray, Gary knows his stuff. Many DX
> peditions have used it to hear your signals.
> And I have compared it to my 6 direction 600 ft beverage arrays. It's
> almost as good. Just like any antenna, if it is poorly erected it will
> perform poorly.
>
> Merry Christmas to all.
>
> Jay, WX0B
>
>>
>>
>
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