Hello Bob -        The implementation will be interesting to watch.  G-Line as it wascalled guides a wave along a single conductor, and I believe that last timeI read about an amateur trying G-line on UHF was in the 70's. I remember seeingthis in old E&M books as a transmission line example. I wonder whichportion of their design is the subject of the patent. It will be importantto watch what frequencies they try to use for their test trials.      The interesting aspect is that AT&T will tout this as cutting-edgeand spend funds to develop a new technology yet totally ignore theadvantage of fiber-to-the-customer (or fiber-to-the-home) which is available in many countries.                                            73, Kermit W9XA          From: Bob Vallio <rbvallio@gmail.com> To: Kermit Carlson <w9xa@yahoo.com> Sent: Tuesday, September 20, 2016 10:57 PM Subject: Re: [arrl-odv:25727] Fw: BPL ? DejaVu all over again ? Thanks, Kermit.  There's plenty of stuff on this system to be found on a Google search.  It's in the 5G 28 GHz, 37 GHz, 39 GHz, and 64-71 GHz spectrum.  Probably not going to be cheap!  Nice chatting with you, tonight. 73, Bob W6RGG On Tue, Sep 20, 2016 at 7:50 PM, Kermit Carlson via arrl-odv <arrl-odv@reflector.arrl.org> wrote: Hello -     Remember BPL ?  This story in the Wall Street Journal sure looks odd, but I am inquiring with hams that work atAT&T to determine how this proposed system operatesand what possible problems could arise from the frequencieson which it operates.     I will let you all know what I find out, if someone has thetechnical details please contact me offline,            73, Kermit Carlson W9XA http://www.wsj.com/articles/ at-t-to-test-broadband-over- power-lines-1474411386?mod= WSJ_TechWSJD_NeedToKnow ______________________________ _________________ arrl-odv mailing list arrl-odv@reflector.arrl.org https://reflector.arrl.org/ mailman/listinfo/arrl-odv