[Elecraft] Noise Nuller

[Jim Brown]

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.