Roger, I had a similar problem. I found it with an AM radio. It was my
neighbor several houses down the street. The AM radio took me right to it. He
had a defective electric fence. The interference started at the AM band and
went up as high as my radio could listen @ 30mhz. It was very loud, over S9.
The FT-1000 noise blanker was very effective and took it completely out. That
interference can travel quite a distance. After all, I'm thinking Marconi did
it! Good luck with your search.
73,
Ralph
[Original Message]
> From: Hoeft, Roger V <roger.hoeft at intergraph.com>
> To: <SECC at contesting.com>
> Date: 11/30/2006 8:33:33 PM
> Subject: [SECC] Clicks in the loop
>
> Folks,
>
> Anyone have any notion as to what may be the source of a clicking noise
(40 - 50hz) that is picked up by a K9AY loop? The noise is more pronounced
on 160M than on 80M. It's too low in the noise to be heard via the tx
antenna, but comes through strong in all 4 directions of the loop. I'm
guessing it's similar to an electric fence / charging device - although
I've never experienced one via the radio.
>
> Any suggestions on how to locate and nullify the source? Thanks es will
be looking for you on 160M this weekend.
>
> 73,
>
> Roger ...
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