that is a good tool for coronal and arc discharges.
Dave - WØLEV
On Fri, Apr 16, 2021 at 9:31 PM Christopher Wawak <kc2ieb@wawak.org> wrote:
> Hi all! I ended up splurging on this doohickey -
> https://mfjenterprises.com/products/mfj-5008 . It's an ultra-sonic
> receiver
> that purports "to pick up the noise generated by the corona discharge and
> arcing connections". For those who may not be following my saga, I
> determined using a portable SDR radio that the same noise that obliterates
> 40m up through 10m comes strongest from one of two electric poles near my
> house. No other poles exhibit the noise. Using the MFJ-5008, I immediately
> heard a very strong ringing from one of the two poles, which doesn't show
> up when I point it at other poles, houses, etc. There's a little sight hole
> you can use to pinpoint the noise, which I did - it seems near the top of
> the pole is where the sound is loudest. Very easy to use, and seemed to
> work as advertised. Totally understand why this is expensive, it's a very
> niche item. I'll need to find a lot of RFI to make up the price tag, but
> additional evidence helps!
>
> I called the power company, who initially said they'd have a crew out in 4
> hours. After days with no visit, and numerous calls to PSEG, they have no
> information to provide. I filed a complaint with the NJ Board of Public
> Utilities asking that they follow up with PSEG and compel them to consider
> my complaint. If anyone has a contact with PSEG, I'd really appreciate a
> connection off list.
>
> If folks are interested, I'll try to make a little video of using the
> device. Also, if you're in the Southern NJ area and need to borrow it, I
> accept beer! :)
>
> Thanks again for the help and moral support!
>
> 73 Chris KC2IEB
>
> On Sun, Apr 11, 2021 at 3:05 PM Christopher Wawak <kc2ieb@wawak.org>
> wrote:
>
> > Hi All!
> >
> > I wanted to share where I was currently with my noise issue.
> >
> > Surprise surprise, I don’t think it’s solar panel noise! After doing some
> > more direction finding, I seem to have nailed the source down to either
> my
> > electric meter, or one of two telephone poles. Initially I used an IC-705
> > with the Flag antenna that was in QST recently and a DXE
> > preamp/attenuators. Once I verified the signature of the same noise that
> > I’m getting in my antennas, I went back with a cheap AM antenna, since it
> > was easier to record a video.
> >
> > I do have an RFI log I can share on request.
> >
> > I’m curious what you all think of my radio direction finding based on a
> > short video I created.
> >
> > https://youtu.be/v3oJLtUBrlc
> >
> > 73
> > KC2IEB Chris
> >
> > On Sun, Mar 14, 2021 at 3:00 PM Christopher Wawak <chris@wawak.org>
> wrote:
> >
> >> Hi RFI List,
> >>
> >>
> >> I'm faced with S7-S9 noise across 40m-15m at 200khz intervals. I'm
> >> looking for assistance resolving this RFI I suspect is coming from a
> >> neighbor's solar installation. The owners are elderly, and I'm not sure
> >> they'll understand and be able to remedy the situation. HF is next to
> >> unusable.
> >>
> >>
> >> Some questions:
> >>
> >> 0. So far, do I seem on the right path?
> >>
> >> 1. What tactics have worked in the past with getting owners to respond?
> >>
> >> 2. Right now I have an AH-4 with a wire antenna. If I switched to, say,
> a
> >> fan dipole or a beam antenna would i be able to reject the solar panel
> >> noise? If my antenna were higher up, would that help?
> >>
> >> 3. Am I doomed to not have workable HF at home?
> >>
> >>
> >> 73 Chris KC2IEB
> >>
> >>
> >> (if the pictures are filtered, click here
> >> <
> https://docs.google.com/document/d/e/2PACX-1vSKoiPx-5huAG5M1gLmYFyMPRZ_WY0PxxoC-CH7c-dpXMQZzHuvLzNX2AB8_nb8RIsN7Ri0rmXJp6Ju/pub
> >
> >> )
> >>
> >> RFI Location
> >>
> >> Appears to be coming from solar panels on a house behind my own, about
> >> 275’ away. I traced this with a loop antenna and a cheap AM radio
> >> following to where the noise seemed loudest.
> >>
> >> Characteristics
> >>
> >> Heavy S7+ “hash” noise every ~200 khz, starting around 40m and going all
> >> the way up through 15m.
> >>
> >>
> >> Generally starts an hour or two after sunrise, and shuts down before
> >> sunset.
> >>
> >> Noise Log
> >>
> >> 3/13/2021
> >>
> >> 4:00 PM Local - https://www.youtube.com/watch?v=QQZr1xXIf0Y whole house
> >> power off test @ 3:14 in the video - no improvement
> >>
> >>
> >> Gone by 7:53 PM
> >>
> >> 3/14/2021
> >>
> >> 8:38 am
> >>
> >> Some squiggles
> >>
> >> Showed up almost on the dot at 9am
> >>
> >> It’s moving down the band some
> >>
> >> Most noticeable from 20m on up
> >>
> >> .
> >>
> >>
> >>
> >> --
> >> -- Chris
> >>
> >
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--
*Dave - WØLEV*
*Just Let Darwin Work*
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