Topband: Another Noise Question

[Larry Burke WI5A]

I've been searching for this one for weeks now to no avail... I'm heading 
out for another look this afternoon, but thought I'd see if anyone has any 
ideas on a possible source. The symptoms, etc:

1. The noise sounds like a continuous steady static discharge. Not a raspy 
buzz, but a noise more like that produced by rain static once the rain 
static becomes continuous.
2. It appears in a few isolated clumps in the low frequencies, roughly 100 
kHz either side of 2725 kHz and 3725 kHz.
3. Hard to tell, but the source may be responsible for some general noises 
elsewhere in the spectrum... the static only appears in the ranges 
indicated above.
4. Can't hear it on an AM BCB radio
5. It seems to go away during and for a day or so following a rain, leading 
me to believe the source is outdoors and getting cleaned a bit by the 
moisture. But why would it get dirty again so soon?
6. I've been able to indicate a direction to some extent using the only two 
Beverages I have. Noise comes in strong using Beverages, 40m vertical and 
80m sloper, but not even detectable on any of my albeit higher frequency 
yagis (including the 30m yagi).
7. I have an ICOM IC-R10 hand held receiver that covers this part of the 
spectrum, but I cannot receive the noise on it... possibly indicating it is 
not extremely close. This receiver leaves something to be desired anyway 
for HF. It might come in handy if I got close to the noise, though. I do 
not have a mobile rig for HF. Driving around with the handheld has produced 
nothing.
8. I can hear the noise on both my MP and TS-930.
9. Killing the power to the house (except for pieces of the shack... killed 
those separately) made no difference.
10. I live across the street from a Junior High School, but a walk around 
the perimeter with the handheld didn't pick up anything.
11. It's S-8 on the MP's meter at 1 pm  when I would not normally see much, 
if any noise on 80m.

Know it's a long shot, but I've picked up a lot of tricks so far on the 
reflector... thought someone out there may have something to add.

Larry -- Wi5A


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