|[AMRadio] fuzzies on the 80 meter band|
w5jo at brightok.net
Wed Mar 17 21:39:56 EDT 2010
This recent discussion kind of hit home today. My shack is self
contained and about 25 ft. from the back of my house. About 3 months
ago the power company hired a tree trimming company to clear branches
from near the power line service in the area near where we live. They
have almost finished the job in a 5 mile radius when I noticed that a
lot of the noise I had been hearing disappeared.
About 3 weeks ago a real loud buzz saw signal appeared on 3.730 or so
and extended up to near 3.775. It was terrible and kind of made me mad.
So finally today I had the time and inclination to see if it originated
in the house. I used a small Sony SW receiver and put the antenna all
the way down and started sniffing. The noise was almost non-existent at
the service entrance so I kept looking.
Finally I found that my Zoom ADSL modem seemed to be the point of
origin. When I unplugged it, the noise went away completely. Thinking
it was the wart, I put another on it and the noise came back somewhat.
I had another modem sitting here so I changed and now the band is clear
I noticed on the label that the wart sticker said it is Rohs compliant.
So my guess both it and the modem might have grown tin whiskers. I just
wonder if I have avoided a potential house fire in addition to clearing
a real buzz saw. Boy do I hate progress.
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