Hope you can help:
In trying to resolve several different interfering sources, I am wondering
about how to best identify powerline noise vs other types.
I always believed Powerline noise to be be very wide band, sounding similar
throughout most of the HF band. Or at least, several bands. Is this correct?
I seem to get confused when I hear powerline type noise, but only at certain
frequencies- and at differnt bandwidths... anywhere from a 5 -100KHz bandwidth,
for example. So is it possible that the nature of the arcing, flashover or
corona is resonating within specific bands and/or at specific frequencies - or
is that highly unlikely?
I have often re-evaluated my long time belief that :"if its powerline noise,
its has to cover the entire HF band"
thanks and looking forward to your repy
Greg
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