I guess this topic belongs under "Transmitter Talk category.
While reading this article all I could think was "carrier current", which of course is what it is, but I mean AM or FM cc.. So if he's able to rig up an effective carrier-current high speed internet throughout his house via the telephone wiring then why couldn't the same be achieved with radio? I keep seeing post where people are looking for AM carrier-current components and not finding it. It's not something I'm particularly interested in myself but I've always wondered what the big complication was, are the AM carrier current gear really so difficult to DIY?
Would something like what this guy did be applicable to AM/FM somehow?
Here's some excerpts from the article:
Clever Brit successfully repurposes telephone wiring for gigabit internet throughout his vintage home
https://www.tomshardware.com/networking/clever-brit-successfully-repurposes-telephone-wiring-for-gigabit-internet-throughout-his-vintage-home-lad-converts-incomprehensible-mess-of-wires-into-high-speed-ethernet-links
A diligent British citizen has successfully converted his archaic telephone wiring into high-speed networking that gives him gigabit speeds basically anywhere in his house. ... .. .. switching to telephone cables is a major upgrade since both ethernet and land-line use copper cabling as the medium. In this instance, it was Cat5 spread across the place. .... ... Moreover, British households, including this one, have daisy-chained telephone lines, which means a single central point branching off into several sockets, whereas ethernet requires a star topology where every end needs to be directly connected to the mains. Therefore, you need a powerful device that does the conversion, so a modem, while maintaining the signal properly, is the special part. Our guy chose the GIGA Copper G4201TM which uses G.hn modulation to break the signal into lots of tiny sub-carriers spread across a wide frequency band. Then, it basically plays a game of tug of war, balancing bit-loading in real time with robust error correction. ..... ...
He also describes the dire state of his telephone wiring, arranged incompetently by an "idiot" that basically necessitated the use of this method. "The gigacopper device to do gigabit Ethernet over phone line is a miracle," he wrote while ending his blog with an open-ended suggestion to companies to tap into this lucrative market.