Ofcom commissioned PA Consultants to produce a report into Power Line Adaptors (PLA) and interference to the radio spectrum. After a long delay the report has finally been published and is availabe here:
Its pretty condemming of the technology and paints a bleak future for, to air broadcasting and other users of the HF and VHF spectrum.
For a YouTube demonstration of the effects of PLA follow this link:
No wonder OFCOM delayed publishing...
Tim Hague, MIET, MIEEE