[Elecraft] Strange signal seen on P3

[Tom Azlin N4ZPT]

Change your span, does it go away? Change it further, does another spike 
show up?  Turn off the K3, does it go away?

My answers were yes, yes, and no. I did find some spans with no spikes. 
  Lucky the ones I use. I still need to go back and search for them 
again now that I have reconfigured my shack layout.

I presume some sort of internal P3 spur with the SVGA card in place.

73, tom n4zpt

On 4/3/2012 10:38 PM, Bill Swindell - K1LED wrote:
> I noticed on my P3 a single spike displayed on the right side of the screen.
> The signal is 12.45mhz from the center frequency. As I tune the radio, the
> P3 display shifts so that the radio frequency remains in the center of the
> P3 and the extra signal stays on the right side of the P3 display. What
> causes this erroneous display?