View Single Post
  #15   Report Post  
Old February 17th 04, 11:42 AM
Mark Keith
 
Posts: n/a
Default

"DeWayne" wrote in message ...
"RHF" wrote in message
om...
KW,

I have bought two Kiwa MW Air Core Loop Antennas.

A Used one for $248 and the other 'Like New in the Box' with
all the Documents and Gear for $425.


Is it really that much better than a Select-A-Tenna? I've pulled in a lot of
stations very clearly with my SAT.

DeWayne


I don't know what a Select-A-Tenna is, but a loop is a loop is a loop.
There is no magical quality that any one loop would have over another
besides voltage. The larger the loop, the higher the voltage out. But
the directional qualities are the same. Several hundred bucks for a MW
loop is ridiculous. I'd have to be on some kind of drugs to pay that
much. My loops are all free. And they work as well as any other loop,
not counting extra tricks like phasing, etc. The size of the loop, IE:
bigger, is only important if you actually have a low enough noise
floor to take advantage of it.
You have to be out in the country in most cases. Here in the big
breast bearing city of Houston, my smaller loops work as well as the
bigger ones. If the station listened to is strong, a ferrite stick is
about as good as anything. Even my fairly small 16 inch round loop
gives me enough voltage to be well over the city noise floor, with no
preamp used. Only a coupling loop. It covers 500-2000 kc. Lower into
LW, if I tack on extra fixed caps in parallel with the variable. To
see an improvement over a normal bi-directional loop, a K9AY
terminated loop, or something along those lines can be used. That IS
an improvement over the average loop as it's unidirectional. Most run
a pair, switched to change in 4 directions. Looks kinda like an
eggbeater of sorts. MK