[Elecraft] K3 Noise when moving KX3 VFO

[VaibhaV Sharma]

Hello,
Here is a weird problem.

I have two dipoles in the backyard, one connected directly to a K3/10 and
the other to a KX3.

* No external tuners or any other equipment in the middle
* K3/10 is on 40 meters to 7.187.00
* KX3 tuned to the same frequency
* KX3 powered by internal batteries (same problem with external power)

At this point if I tune around with the KX3 (between 7.184 and 7.186.75)
and the K3 stays on the same frequency, you can hear a loud tone on the K3.

Here is the video -
https://www.youtube.com/watch?v=2DgHUcYxjVc

In the video, the KX3 is on mute initially. All the audio (receive and
tone) is from the K3.

Is the KX3 generating some noise offset around the center frequency?

-- 
VaibhaV