Hahaha! Ebay, land of the import mocku-gear rebadgers. I do buy on Ebay, but sparingly these days as it has gone to crap there.
The powerline kit:
http://www.pcmag.com/article2/0,2817,2350631,00.asp
http://www.newegg.com/Product/Product.aspx?Item=9SIA24G15S6443
http://www.amazon.com/Gigabit-Powerline-HD-Starter-Kit/dp/B002GHCZMG
Clearly, Amazon reviews and buyers are going to be my new go to double-sanity check before purchases like these. PCMag clearly must be a paid sponsorship opportunity. You know of course, right, that Belkin was outted for paid fake reviews and buying positives all over.... Oh you didn't? Now you do.
The sealed retail box for this says:
Operating Range**
* Up to 300m in wall powerlines
So here's what is up.
These don't operate via the powerlines.
They plug into the wall (and are freaking huge - blocking all sorts of other plugs from use on a standard 3x3 socket surge splitter.
In my office, I have two different power lines. Two different utility meters, pulled from different utility lines too. Different everything. No cross over anywhere. Totally isolated.
These devices have 3 LEDs - one on the top middle is for quality of the signal between the two devices. Blue, amber or unlit. Amber is what I get. Which says "Link rate less than 200Mbps". The box touts this gear as "Up to 1000 Mbps".
I carelessly wired one end into power meter #1, I then plugged the other into power meter #2.
Guess what? They are commnicating
Even though on different lines, thrown through surge protectors, etc.
Problem is, like I said, they are communicating from two different utility powermains.
I know, they are just that strong
I sincerely farking doubt it.
So time allowing, and weather cooperating, one of these is getting thrown on DC solar setup upside an AC inverter, entirely off grid.
It would be IMPOSSIBLE for these to work where one wasn't even on-grid.
Unit I have next to me right now, this Belkin shit, it's damn hot. Need to get my laser meter. But let me say it reminds all around of the high powered, non-FCC legit, multi-watt omni style wifi devices that were steady coming out of China for eons. I have a unit similar size like that and thermals are very similar in hand feel --- doubt this is working on wifi spectrum and I am not an electronic / bench meter sort of person...
PS: someone mentioned the high wattage use of similar devices.... the thermals + wattage are very good sign of a transceiver (wireless) setup instead of working via mainline power wires.