Carl R. Stevenson wrote:
...
There is a company (called "Corridor" IIRC) that claims to have a BPL
technique that operates at 5 GHz using the power line as a "G-line"
transmission line.
(basically a conical "launcher" at each end of a single wire ... used in the
past as a low-loss UHF/microwave transmission line, but not hear of much in
recent years)
...

Not a lot of info, but try http://www.corridor.biz


later,
L