[Elecraft] K3 8khz wide sig tracks VFO A ~30khz lower in frequency

[Eric Swartz - WA6HHQ, Elecraft]

Check the connections on the BNC cable between your K3 and P3 and re-seat them. 
Also, if you have an extra BNC-BNC cable, try replacing this cable.

Also, if this BNC is run near switching power supplies etc. it can pick up noise 
like this.

73,
Eric
/elecraft.com/

On 6/8/2016 7:22 AM, Sam Morgan wrote:
> I have a 8-9 khz wide signal that follows my VFO A around. I saw this on 160m 
> and also in 10m this morning. I haven't checked the other bands.
>
> Images can be seen here:
> https://picasaweb.google.com/k5oai.sam/6293813435183959297
>
> No antenna was connected to the K3. The only cables connected to the P3 were: 
> Coax and RS232 from K3. I attached the RS232 to the computer to get the snap 
> shots, bet the signal did not change with it connected to the computer or not.
>
> Note: During the snapshots I bumped the VFO knob from 28.120 to 28.119.40 by 
> mistake during the snapshots, but that doesn't have any effect on the fact 
> there is this big wide scary 8-9khz wide signal ~ 30 khz down from VFO A that 
> is tracking my main VFO.
>
> What is going on, has my K-Line been invaded by something? If so what and how 
> do I fix it?
>