[Elecraft] P3 Noise signature

[Jim Brown]

Dave,

You may be able to knock this noise source down with effective line 
filtering.  The first thing to try is winding many turns of the AC cable 
around a #31 ferrite core.  It won't help noise that is radiated 
directly by wiring inside the unit, but it can take the AC cable out of 
the picture. And you should also approach the manufacturer and firmly 
insist that they  fix it.

73, Jim K9YC