I'm currently plagued with two sources of HF RFI, and for the
moment am concentrating on locating one of them. Any help
I can get from the RFI sleuths on the list would be greatly
appreciated!
The noise in question showed up about a month ago, and appears
as a combination of white noise and random, rapid static crashes.
The static crashes, or bursts, sound a lot like heavy QRN.
It is typically the loudest on 14 MHz, and can be heard from 7-24 MHz
when it's at its worst, with peaks on 14 MHz of 10 over S9. I hear no
buzzing when listening on AM. My noise blanker has no effect.
Its presence can't be correlated with weather. I hear it on both wet
and dry days, wind or no wind.
It seems to peak from a certain direction when I listen on my HF log
periodic. I've driven the neighborhood streets (up to 2 mi away)
with my
706 and hamstick in the car and can hear what I think is the noise in
certain locations, but never loud enough to be a "smoking gun". I
verified it's not coming from my house, by killing power and
listening
in the driveway on my 706 to the noise.
Early morning is typically very quiet. At 6:30 AM local time I
usually
hear only silence, or a few weak bursts of noise which sound like the
problem. It typically peaks by noon. I almost always hear it in the
evening and at night.
Any hints anyone might have as to what a possible source might be or
the best way to continue trying to track this down would be
appreciated.
73,
Scott, K1OA
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