[600MRG] photo of noise spikes here on 630M

[Alan Cooper]

Do you happen to know if there are any RV's that are in the neighborhood
that are plugged in?

I can hear them if they are within a mile or so of my house. Some of those
have absolutly filthy switching power supplies and can be heard sometimes
farther away than a mile.

try checking around to see if there are any around your place that might be
plugged in to maintain batteries...etc..

that would be one possibility.

Alan
w7aln

On Sat, Aug 20, 2022, 11:05 AM Doug Allen <dougk4ly at gmail.com> wrote:

> Hey guys,
> I'm hoping to be able to resume 2-way contacts soon. When I last operated
> two years ago, I had almost no interference on 630M. Yesterday I mentioned
> the noise spikes from an unknown source outside my home that now hinder my
> 630M reception.  Here's a photo of those noise spikes on both the Flex 6500
> panadapter and on the WSJT-x graph.. You'll also see around 1490 Hz on the
> WSJT-x graph the WSPR signal of N1DAY which is conveniently between noise
> spikes.  Weak signals on the same frequencies as strong noise spikes don't
> get decoded. The noise spikes are narrow band and equidistant apart, as you
> can see, and some much stronger than others.  Any ideas on what this
> interference could be or how I might try to trace it down?
> Doug K4LY
> Inman, SC
>
> [image: 542e7757-d1e8-4a11-bdf4-948ea2bb3475.png]
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