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
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
Merry Christmas to all.
972 203 2008
Military Communications Systems, Phased Arrays, RF Switches, Antennas & Towers
TowerTalk mailing list