I've been working with my local power company to eliminate power line noise.
We had most of it eliminated until last week when a new noise source popped
up. This new noise source is horrendous (59+30dB on 80m and up to S8/9 on
10m). The power company's RFI guy came out a couple of days ago and tracked
it down to a specific pole.
The pole is about 1000' down the highway from me at a tee roadway
intersection. Here's a poor attempt at a diagram:
QTH
------------------------------------------------------------------
------------------ -------------------------------------------
X2 X1| |Y1 Y2 Y3 Y4
| |
| |
X3| |Y5
| |
The RFI guy thinks that the noise is coming from X1 (X=other company's
lines; Y=RFI Guy's/My power company). There are no connections between the
two power companies' lines that is anywhere close to this area.
Listening on 2m SSB with the vertical on my truck, I get a very strong (S8)
noise from Y3-Y2-Y1-Y5. The noise drops off as you move from X1 to X2 and Y3
to Y4. It also decreases as you move from X1/Y1 to X3/Y5.
If the problem pole is indeed X1 (belonging to the other company), would Y2
and Y3 be re-radiating the signal that strong at 144 MHz (remembering that
there is no connection to X1)?
Doug
K4AC
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