[BC] Is Power Line Noise Illegal?...

[Harold Hallikainen]

> If you look at the rules regarding Part 15 and specifically,
> "Unintentional Radiators" and depending on the field intensity of the
> interference, the answer may very well be a definite "yes".  Power
> lines can easily fall into the category of Unintentional
> Radiators.  That's really the whole issue surrounding BPL. The power
> lines are supposed to be conductors (of BPL), not radiators.
>
> Burt


I think BPL would be an unintentional radiator since it intentionally
generates RF, but does not intentionally radiate it. Power line noise,
however, I think would be an incidental radiator, since the generation of
the RF is not intentional. See
http://www.hallikainen.com/FccRules/2006/15/3/ and
http://www.hallikainen.com/FccRules/2006/15/13/ .

For incidental radiators, there are no solid radiation limits. Instead,
"Manufacturers of these devices shall employ good engineering practices to
minimize the risk of harmful interference."

Harold


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