Being a "Ham" myself, Interference is always something that I am concerned about.
But, the question that I would like to ask, is this, just going to play Devils Advocate, for a moment!.
How much more Interference to HF/VHF communications is this going cause, than is already caused by the bad connections, motors, fluorescent lights and Neon Signs already in Electrical Installations?.
What sort of power level (dB) are we talking about here?, with respect to the signal level being sent down the lines?
How does this sort of Interference differ from the hash put over power lines by Hams using a Computer to access Packet Radio?.
Does BPL have Harmonics, like a poorly tuned Ham Xmitter?.
Mike Trump ZL3TPQ
Let's face it, these days if you're not young, you're old - Red Green