[RFI] RFI cured with 1/4 wave wire

[Jim Brown]

On Thu,2/18/2016 4:42 PM, Gerald Wolczanski wrote:
> QUESTION:  The tuner settings didn't change much.  I surmise that my
> ground on 30 meters is now a low-Z...and the RF-in-the-shack problem
> went away.  Is that right?  What happened here?

You are confused about the difference between "grounding" and "bonding." 
I suggest that you study this tutorial on the subject.  A year or two 
ago, N0AX used it as the jumping off point for a series of QST columns.

http://k9yc.com/GroundingAndAudio.pdf

In short, that wire you're using to "ground" your computer is acting as 
an antenna to radiate the RF trash that's on it's chassis. What you need 
is bonding. A connection to the earth is NOT part of a solution to hum, 
buzz, or RFI, and, as you have seen, can often be a cause of problems. 
It is needed only for lightning safety.

73, Jim K9YC