[RFI] High local noise level...

Kenneth G. Gordon kgordon2006 at frontier.com
Sat Mar 14 20:50:25 EDT 2015

On 14 Mar 2015 at 16:41, Jim Brown wrote:

> On Sat,3/14/2015 3:19 PM, Kenneth G. Gordon wrote:
> > Today, I connected the audio output of my transceiver, a Yaesu FT-890,
> > set to AM-wide, tuned to 3580 KHz, into my computer and fired up
> > Spectran.
> >
> > Spectran is exhibiting a very wide-band series of peaks in the noise
> > which appear to be multiples of 60 Hz.
> You are seeing harmonics of the AC power line. This is an indication of 
> improper bonding of your equipment.

If this is so (and I am NOT arguing with you about the need for better 
bonding) why is it that my noise disappears when I disconnect the 


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