[Elecraft] P3 ghost signal?

[vidi]

I noticed that on 17.6792mHz there is a strange ghost signal visible on the P3.    As I tune over it, it moves in the opposite direction to VFO dialing direction!  I turned everything off in the shack and also selected the dummy load but it is still there.  This ghost signal is not audible on the K3 and only shows up as a 'signal on the P3.  I wonder if it is only my P3 that does this.

Vidi - ZS1EL