[Elecraft] Noise Nuller

[Bob McGraw]

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