[Elecraft] Noise when plugging kx3 into computer

[AB1SX]

Never noticed it because while setting up the kx3 I was also setting
everything up on my computer.  I am a new ham and was getting the logging
software etc all set up.  I recently was using the kx3 without the computer
plugged in and the computer was on the other side of the room.  I had very
little background noise on the kx3.  I finished up what I was doing on the
computer and brought it back to the kx3 (computer was still on) and I
started getting back ground noise, when I plugged it in the noise even got
louder?   I then took the computer away from the area and the noise
disappeared again?  What's up with that?  Everything is grounded.  Could it
be because I am plugging the lap top into the same plug outlet as my remote
power?  The KX3 is set up as a base station in the house, remote power
source, kx3, antenna tuner and 150 watt amp.  Is there a way I can stop that
noise through filters on the kx3?   Suggestions would be apprciated.

AB1SX 



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