Power-Line Noise Eliminated

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From: David D. Meacham (ddm@datatamers.com)
Date: Mon Aug 26 1996 - 23:55:00 EDT


Gang,
I've had a constant background of power-line noise for many months.
Almost grew to accept it!

The other day, while walking my dog, I noticed an arcing sound. (I'm a
little sensitive to that noise, having worked with high-voltage circuits
for quit a few years...modulators, pulse transformers, etc.) I looked
around and there was a power pole! I cocked my best ear & turned my head,
zeroing in on the sound. Turned out it was coming from the top of the
pole where 3 power-factor-correction capacitors and 4 little transformers
were mounted! Wow! Corona, in spades. Let's see now, about 2 blocks from
my house...could it be??? Naww. Maybe? Well, I resolved to call P.G.&E.
the next morning.

I called the emergency number & said it wasn't a real emergency, but "one
of your poles has a loud arcing sound..." Also told them I was an
Engineer.

ONE DAY LATER THE NOISE WAS G O N E !

Now, other than occasional buzzes, all I hear on 80m is atmospheric noise!
Happy Days! My noise floor dropped about 8dB. The moral is: If you have
power-line noise, just walk around your neighborhood and listen for corona
(arcing noise). If you can identify the offending pole (as I did) it may
help a LOT when you call the power company.

72, Dave, W6EMD


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