It's not at all like HomePNA in that it does not shit all over the RF spectrum. Please do not use these powerline bridges; they are awful in all respects and should never have been allowed to be marketed.
Also, doing the thing in the article isn't ideal either, though there are always a lot of interesting RF things to try with WiFi. Look into leaky feeders / leaky coax for instance.
I do not use powerline bridges. I've had my setup for years and I only get 1gbps because my gear is MoCA 2.0. It has been a truly "set it and forget it" setup for me.
I've been doing this for years! FYI if you have XFinity or Verizon FiOS you get one end of this for free. All FiOS routers support MoCA, even if you're connected to the ONT with direct attach BaseT (it's used internally for the set top box LAN segment too). Also XFinity Cable modems (at least, the last one I had 2 years ago from them!) supported it too, but not out of the box, it was a hidden option in the settings menu.
Depending on the gear, you could get as much as 2.5Gbps through the channels, but beware! just like WiFi, this is shared bandwidth for every device. Its also a bit sensitive to daisy chained coax splitters -- it prefers a flat topopgraphy for best signal performance (though you should really be doing that anyway). Also unlike WiFi, MoCa is really zero config needed past initial enable.
It's not at all like HomePNA in that it does not shit all over the RF spectrum. Please do not use these powerline bridges; they are awful in all respects and should never have been allowed to be marketed.
Also, doing the thing in the article isn't ideal either, though there are always a lot of interesting RF things to try with WiFi. Look into leaky feeders / leaky coax for instance.