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Author Topic: Help Identifying Noise  (Read 3322 times)
K7CB
Member

Posts: 81




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« on: February 11, 2012, 05:30:29 AM »

I'm hoping some of you might be able to help me identify this noise:
http://youtu.be/_iwe5Qgd3Ec

It's strongest on the lower bands - becoming almost non-existent at 10M.
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WX7G
Member

Posts: 6327




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« Reply #1 on: February 11, 2012, 06:53:16 AM »

It sounds like power line arcing noise.
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K7CB
Member

Posts: 81




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« Reply #2 on: February 11, 2012, 08:09:49 AM »

That's what I think it is...the power company seems more than willing to help get rid of the noise but they say they don't hear anything with their test equipment when they come out.  The problem is they do it when I'm at work and not home to talk with them.  Anyone else?  The more feedback I get the better.
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WX7G
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Posts: 6327




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« Reply #3 on: February 12, 2012, 09:10:07 AM »

Is it wideband - the same amplitude eveywhere on a ham band - or does it peak at regular frequency intervals?
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W1FBV
Member

Posts: 26




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« Reply #4 on: February 13, 2012, 06:26:28 PM »

Are there any wall warts nearby?  if there are, unplug them and see if that helps.
Jim, W1FBV
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K1CJS
Member

Posts: 6061




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« Reply #5 on: February 14, 2012, 05:00:21 AM »

When does the noise show up?  Evenings/nights?  Or all day long?  If only when its dark, maybe a street light nearby is going bad.  If all day, could be a splice point going bad.

I rented once at a home where the electrical weatherhead connections to the incoming lines were spliced--and the old splice was failing.  I finally located the problem one evening--saw the sparking inside the splice boot.  The power company came down right away and re-spliced the lines, and no more noise.

Sometimes the better fault detector is your eyes--depending on the fault!
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K7CB
Member

Posts: 81




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« Reply #6 on: February 22, 2012, 06:52:09 PM »

The noise is there at all hours of the day, does not fluctuate with frequency...although it does get weaker the higher I go.  By the time I get to 10M, it's gone.
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