Don other consumer electronics equipment like plasma TVs, electric blankets, garage door openers, baby monitors, etc. cause interference?
Yes, they often do, but none of these are miles long, 30 feet in the air, on for 24 hours a day, or occupy tens of megahertz of spectrum simultaneously like BPL. FCC Part 15 was designed to allow devices like these and others to cause a little localized interference and not require overly expensive construction to be completely clean. BPL uses Part 15 in a way it was never intended.
