Your third and last capture I note is right at 60 kHz. That's the
frequency of WWVB from Wellington, Colorado. The other two sound like
rather sloppily sent CW. I could copy it if needed. Likely it's a dirty
transmitter whose operator is "practicing" sending Morse Code.
Why....where....who..When..... Who knows.
Dave - WØLEV
On Sun, Jan 25, 2026 at 4:13 PM Dave (NK7Z) <dave@nk7z.net> wrote:
> Hi,
>
> You might consider taking a closer look at your RFI by using an SDR to
> characterize what is happening over time. See:
>
> https://www.nk7z.net/sdr-rfi-survey-p1/
>
> In some cases, that helps a lot in location, as you get a better feel
> for what the source is actually doing across a longer time period, and
> wider frequency range.
>
>
> 73, and thanks,
> Dave (NK7Z)
> https://www.nk7z.net
> ARRL Volunteer Examiner
> ARRL Technical Specialist, RFI
> ARRL Asst. Director, NW Division, Technical Resources
>
> Random Quote of the day:
> I’m just one scientist in a giant team, but I’m the one with the best
> lab playlist.
> Norman Borlaug
>
> On 1/24/26 17:10, Volodya S wrote:
> > I'm primarily a MW DXer. I have a remote set-up on an island south of
> > Alaska. I'm 10 miles out of town, and almost that much from the town's
> > diesel generator (and a relatively new solar farm). I do have neighbours
> > in the area, but very spread out along a road alongside the ocean. The
> > closest is a hundred yards away, and spaced every several hundred yards
> > along the road. We have 4.4 acres of ocean front. I'm very noise
> averse,
> > and have been careful to avoid any potential noise sources within our
> > household. This source seems to have begun over the last 6 months, and
> can
> > be present day or night. As I type this, the intermittent buzzing, which
> > sounds almost like CW can become a steady buzz for a few seconds, and
> again
> > becomes intermittent. I can hear it much worse in the VLF/LF band. I've
> > attached links to 3 mp4 files. I'd appreciate any input on solving this
> > new noise issue! Thanks!
> >
> >
> https://recorder.easeus.com/share.html?sid=d6944cbda29242bfb6a07eb39ca0b1aa
> >
> >
> https://recorder.easeus.com/share.html?sid=807686b2685a4171ba3a48354032a042
> >
> >
> https://recorder.easeus.com/share.html?sid=84198a46fc404818b83e651977c06949
> > _______________________________________________
> > RFI mailing list
> > RFI@contesting.com
> > http://lists.contesting.com/mailman/listinfo/rfi
>
>
> _______________________________________________
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> RFI@contesting.com
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>
--
*Dave - WØLEV*
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