ATT is headquartered in Dallas, where the CEO* lives not far from me. Now they are testing BPL again - - Click here: https://www.reuters.com/article/us-...speed-internet-over-power-lines-idUSKBN1E70GB Tom, N5GAR *(He also heads up the Boy Scouts in the US)
This is not "high-speed internet over power lines." Rather, it's high-speed internet transmitted through plastic microwave antenna's attached in proximity to power lines. "Project AirGig" http://fortune.com/2016/09/20/att-internet-over-powerlines/
http://www.sonic.net/~n6gn/ An October 2016 Pacificon Presentation, SWTL Summary and Demonstration which is a sort of summary of the SWTL technology, demonstrations and other activities on these pages. Please note that this is NOT "G-Line" as described by Goubau (which required slowing the wave down) nor is it the same as what Tesla described.
What AT&T shows in their you tube video is they plan to install point to multipoint sector radios on power poles fed by a microwave back haul that will simply use the power company right if way