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@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

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