[Elecraft] Noise Nuller

[David Gilbert]

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.

And hams that live in urban areas with industrial businesses nearby 
aren't going to get very far at all.

If it was as simple as you pretend, rig manufacturers wouldn't have 
bothered to build all sorts of noise reduction features into their 
equipment.

Dave   AB7E



On 7/17/2026 10:33 AM, Bob McGraw via Elecraft wrote:
> Has anyone given thoughts or efforts to finding and addressing the 
> source of the noise?   All of these electronic concepts are great, but 
> would not finding, reducing or eliminating the source be more 
> effective.   I seem to think so from my personal experience of 
> tracking down noise and resolving same.
>
> Start with the radio on a battery as the power source.  Then drop the 
> mains power.   Note the noise level.  Then restore mains power and 
> observe the noise.  That my friends is coming from your house. This 
> should be easy to find and correct.   Power distribution systems noise 
> are more challenging to find and correct.  But with a bit of 
> cooperation from the power company that can be accomplished as well.
>
> From my experience and work, my noise level on most all bands, 160M - 
> 6M,  is S-2 to S-3, excluding atmospheric noise of distant lightning.  
>  Winter will correct that.
>
> 73
>
> Bob, K4TAX
>
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