[RFI] Visualizing Line Noise

[N4ZR]

I recently ran across a neat little program called Soundcard Scope, 
which displays 0-20,000 Hz either oscilloscope style or as a vertical 
bar chart by the amount of energy on a given frequency. It seems to me 
this should be useful for characterizing line noise.  Has anyone 
experimented with it for this purpose?

-- 

73, Pete N4ZR
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