Chris Albertson wrote:
Get a spectrum analizer.
Software will do it. Record the humming connetion to a file
and then run it through software that plots a power spectrum.
THere is plent of good open source software. Even some audio
file ditors have this feature. You should be able to see the
hum as periodic peaks at the multiles of 60hz. You can't even
begin to talk about how to fix this without such a plot.
A power spectrum plot will tell him he has a 60Hz hum. I think he
already knows that. I think he can definitely consider solutions without
following your suggestion. :-)
Regards,
Steve
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