👍
On Tue, Oct 21, 2025 at 4:26 PM BILL STEFFEY NY9H <
bill.steffeymktg@gmail.com> wrote:
> GREAT WORK ,,,, you make it ALMOST LOOK EASY .,.... it makes me mad
> when I hear guys surrendering their HF spectrum....rather than to spend
> the effort to chase down the illegal crud on our licensed
> frequencies.... and subsequently get out the ferrite~~~!!!!
>
> bill
>
> ~
>
> On 10/21/2025 5:19 PM, Don Kirk wrote:
> > Mike (W9RE) was experiencing RFI on 160 meters that had repeating humps
> > every 55 KHz and it turns out it was raising his overall noise floor.
> > Yesterday Mike and I tracked the RFI down to his neighbors house and I
> just
> > uploaded a video onto YouTube that documents this case.
> >
> > Tracking the RFI down to 2 adjacent homes that were potentially
> generating
> > the RFI was very easy (just took minutes), but figuring out which of the
> 2
> > homes the RFI was really coming from took much more effort and
> > ingenuity along with 2 really great homeowners that allowed us free
> access
> > to their property. I really can't say enough about Mike's neighbors.
> >
> > Here is a link to the YouTube video which documents this case for those
> > interested:https://youtu.be/K2jI0J14hbM
> >
> > Note: I've been noticing that adjacent homes that are fed from the
> > secondary of the same transformer often cause the innocent house to be
> > screaming RFI (either due to conduction or induction????). In this case
> we
> > used a sniffer loop to measure relative RFI field levels going into each
> > homes utility meter at the two adjacent homes and there was only a 6 dB
> > difference between the two homes but this 6 dB difference along with the
> > portable flag direction finding results on a higher frequency and
> relative
> > field strength measurements at each homes porch was enough for us to be
> > confident we knew which home was really generating the RFI, and we were
> in
> > fact correct.
> >
> > Just FYI, and 73.
> > Don (wd8dsb)
> > _______________________________________________
> > RFI mailing list
> > RFI@contesting.com
> > http://lists.contesting.com/mailman/listinfo/rfi
>
> --
> https://www.qrz.com/db/NY9H
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