On 2/21/2020 9:17 AM, Andreas Wachter via Elecraft wrote:
Also, the RFI is 24x7 so if it were caused by my neighbors’ plasma TVs, there
shouldn’t be any RFI at, say, 3AM in the morning.
Andreas,
For at least ten years, almost anything we buy that plugs into the wall
has an SMPS that generates noise as long as it's connected. This
includes everything from computers to TVs to home entertainment systems
to battery chargers to the inverters for solar systems. My closest
neighbors are at distances about like yours, and I get noise from them.
Some of it cycles on and off, some is constant. There's power line
noise, which can be constant or not.
Like the technically illiterate folks who live near me who believe that
cell towers cause cancer and who campaign against the addition of cell
sites that can provide us service, you've made up your mind without
knowledge of the underlying science.
I've sent you a link to a tutorial that provide detailed advice about
figuring out what kind of noise source(s) you have, how to track them
down, and how to kill them. I repeat my advice to study it.
http://k9yc.com/KillingReceiveNoise.pdf
73, Jim K9YC
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