Exactly right. And I've written extensively about techniques both find
and suppress sources. k9yc.com/publish.htm
But the real world part of the multiplicity of noise sources
surrounding us is that only one can be nulled at a time, and in my
experience, only on the low bands. An important limiting factor with
some sources is that they are physically broad as a function of
wavelength! For example, an array of solar panels, with or without
inverters, and their wiring.
73, Jim K9YC
On 7/17/2026 12:58 PM, David Gilbert via Elecraft wrote:
Of course that's the ideal solution, and of course lots of people have
done (or tried) exactly that and it often works. But I doubt very many
people are going to have much luck getting their neighbor to replace
their cheap solar converters with better ones, and I doubt many people
are going to convince the owners of the adjacent condo to replace their
cheap wall warts ... especially since lots of neighbors aren't all that
happy to have hams next door in the first place.
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