[SCCC] Powerline Noise?

[R. Salazar]

I walked the neighborhood last night with my portable SW radio and found
what I think is the offending pole. I collapsed the antenna on the radio
and it was still full scale noise. I think now I need something very
directional to confirm it's the pole because it is located on someone's
property behind a gate (and I can't smack it with a 10 lb. sledgehammer).
The noise is 24/7 and very stable.

Ryan W6ZAR

On Fri, Jun 11, 2021 at 7:19 PM Dennis Younker NE6I <NE6I at cox.net> wrote:

> I'm no expert in this area as I have not had to track down SDGE noise since
> moving to San Diego and SCE noise since the mid-1980s but have you been
> able
> to track the noise to the suspected pole? If you turn on a portable AM
> radio
> (or better yet, one with shortwave capabilities), are you able to pinpoint
> the source? If you don't have a portable radio, perhaps using your car
> radio
> will help, assuming the noise is also in the AM broadcast band.
>
> Back in the 1980s, SCE had an excellent technician that I worked with many
> times in coordination with the company I was with at the time in LA County
> to track down utility related noise (and sometimes from electric fences and
> whatnot). He was great. However, from what I have read in recent years,
> those types of guys don't exist at utilities anymore due to cost cutting. I
> can't speculate on that or speak with authority...that's just what I have
> read and heard.
>
> I think we have one or more noise experts here on the reflector that
> hopefully can chime in. ARRL also has an excellent noise/interference
> expert
> that may be of help from what I have read.
>
> I will say this from past experience. It's better to tread lightly with the
> utility company and offer to help/coordinate rather than call and be a
> yelling fool. The former will get one a lot more cooperation. And the more
> real data you can provide, the better.
>
> --Dennis NE6I
>
> -----Original Message-----
> From: SCCC <sccc-bounces at contesting.com> On Behalf Of R. Salazar
> Sent: Friday, June 11, 2021 6:13 PM
> To: sccc at contesting.com
> Subject: [SCCC] Powerline Noise?
>
> Hello all,
>
> For the last month or so I have been experiencing very broad banded noise
> on
> HF. It is strongest on 10, 11 and 12 meters but appears randomly throughout
> the HF spectrum. The peaks are evenly spaced about 24 or 25 khz.
> Fortunately, it avoids most of the ham bands but it seems to have raised
> the
> noise floor throughout. I believe it is powerline noise coming from a pole
> a
> few hundred yards behind my house. I have attached a sound file which I
> hope
> will make it to the reflector. Just need an opinion before I call SDG&E.
>
> Thanks,
>
> Ryan W6ZAR
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