Nice job! Keep all informed on progress please...
Thanks and 73's,
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On Mon, 2014-10-20 at 17:52 -0700, Kenneth G. Gordon wrote:
> Some time ago, I brought my, and those of others in my small town, RFI
> problem here to discuss. I was having a constant 10 dB over S-9 noise level
> on 80 meters, as were several other hams in the vicinity.
> At times, my noise level rose to +20 dB over S-9.
> The RFI specialist with our "local" power company who had come to my
> station a couple of months ago to check on noise, came again, without being
> asked, last week, bringing his fancy multi-thousand-buck instrument with
> Within an hour, he had found and eliminated, temporarily, one particularly
> bad source of noise which was originating in the neon light sign for a
> pharmacy, at a local supermarket which was several blocks away.
> Although I had DFed and mapped this noise source some time ago, so I
> knew that there was one very near to that local supermarket, I had not
> tracked it down to the exact source. He found it in only a short time. The
> owners turned the sign off until they can get it worked on, and my noise
> dropped approximately 10 dB.
> He then found another source, about another 5 blocks from my station, in a
> direction almost 180 degrees from the first source, which was caused by two
> guy wires touching one another at another power pole.
> Fixing THAT reduced my noise level another 5 dB.
> So, I have now got "only" a constant 5 dB over S-9 noise level on 80.
> Lots more work to be done, but this still makes me happier than I was before
> he came.
> I have ordered the parts from Mouser and am going to build at least one of
> Tom Thompson's portable noise receivers as soon as I possibly can, then we
> are going on several DF-peditions until we get this problem knocked down to
> a more reasonable level.
> Keeping my fingers crossed...
> Ken W7EKB
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