info on the K9AY loop
Listening test and other observations
How to make your own K9AY
The importance of good ground
How to place wires best
of the KPAY
doesn't K9AY work for me?
Ritola: I bought a K9AY loop from Wellbrook and have been
listening with for a month now. I'm not just quite satisfied with
the performance of the loops, especially their directional properties.
Changing from loop A to be B doesn't feel like turning a loop
at all, the difference is very small.
It sounds to me like you do not understand how K9AY Loops are
supposed to work.
These loops do not give the classic "Figure 8" pattern that you
get from small inside the house tuned loops or larger fixed loops
K9AY Loops give instead a cardiod pattern - a deep null in one
direction and a major pickup lobe in the opposite direction. This
is the same type of pattern you would get from using terminated
beverages or long longwires or from a phasing unit.
The biggest difference between K9AY Loops and a terminated beverage/long
longwire is that the K9AY's have a much broader pickup lobe.
Although there is some rejection off the sides by the K9AY's it
is only on the order of 1-2 s-units which is nothing like the
deep nulls which you get off the sides of beverages, etc.
Of course there is one additional advantage - it takes a hell
of a lot less land to install a pair of K9AY's than a bunch of
Ritola: Would it be any better if I simply put wires
of 40 metres instead in each direction? Would I be able to utilize
the K9AY electronics with these, maybe with minor changes inside?
The above will not work - the K9AY setup works with loops only.
I think you need to spend more time with the antennas keeping
in mind the way they are supposed to work.
If after using them for a bit longer you still are not satisfied
with their performance I would suggest that you contact Andy -
it may be that there is something wrong with your setup.
All I can tell you is that I'm delighted with the performance
of mine and every one that I show them to says the same thing
- "I want one of those!"