On Fri, 27 Nov 2009 14:43:07 -0600 Sam Morgan <k5oai.sam@gmail.com>
writes:
> I know about the rain vs dry effect on powerline noise(s)
> but I am lost to explain a noise that I have
> every time the temps got above 92 degrees or so in the summer.
>
> Any clues what I might need to look for?
Yes. "Slack" lines. Lines, mostly customer taps, that
become even more slack in warmer temps.
Also...I troubleshot a case where a "new type" of lightning
arrestor started making rather robust noise when the
temps were above 40F. The linemen "couldn't believe it"
was the cause. The noise was S9 in my radio over
a mile from the source.
>
> when I tried to look with the 3 ele MFJ noise tracer
> it seemed to come from every direction it was so strong
Just about any noise RX with a directional antenna can
become overwhelmed. You NEED an attenutator in the
coax line between the RX and antenna. The one I use
is a switched 6 - 10 - 20 dB and sometimes that is not
enough.
73...and good luck,
Charlie, N0TT
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160 meters is a serious band, it should be treated with respect. - TF4M
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