[TowerTalk] K9AY Loop

[Jay Terleski]

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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-- 
Jay Terleski
Array Solutions
972 203 2008
Military Communications Systems, Phased Arrays, RF Switches, Antennas & Towers
http://www.arraysolutions.com