[Elecraft] P3 "Tuning Noise"

[Jim Brown]

On 10/26/2011 5:02 PM, Fred Jensen wrote:
> OK folks, I'm just curious, whether or not I should have a glass of wine
> with dinner is a much bigger deal for me than this so I don't want to
> start a big thread, but ...
>
> I've noticed, just recently, that when I'm spinning the Big knob on the
> K3 fast, or even not so fast, the apparent noise level on the K3
> spectrum display seems to rise just a little [I don't use the W'fall, I
> can't see most of it].  When I stop turning the knob, the trace settled
> back to band noise.  Happens all bands [that I've tried].  P3 works just
> fine, K3 works just fine, KPA500 works just fine, I've got a few new
> ones including the "Survivor Island" on several bands, I'm just curious.

I may have been the first to discover this several years ago, and Wayne 
worked out a band-aid to fix it. I mostly heard it on 6M. It's a couple 
of resistors and a couple of diodes that can be soldered from the bottom 
of the main board. They're even generic parts!  Just pull the bottom 
panel to access it.  There's a pdf on the website with nice photos and 
instructions. Once you've done that, you change a setting in one of the 
setup menus.  Still have to do it with one of my K3s.

73, Jim K9YC