[Elecraft] K3 - background hiss (noisy K3) - update

[Sullivan, Mike C]

Not sure this helps much other than knowing you are not alone.
I have had the same problem and fixed it exactly as John - VK7JB has - SN on my K3 is in the 800s.
I have checked my S/N ratio and it is at least as good as the spec.
My hearing has been checked here at work and I have been told that I have good hearing for anyone these days, and really good for an OF.
I would bet having a pair of good ear-plugs in my pocket from the age of 18 or so had a lot to do with it.
Just tripped 60 yesterday.

Mike Sullivan
Lockheed Martin, Denver
 73 WM0CW ..