You kind of just proved my point. Signal modulation and demodulation require a device that can do so. You need a modem to do so. There is no magic device that can do that from your computer unless it is specifically built to do so.
There is equipment on the power line to actually ACT AS THE DAMN MODEM, DUDE.
Also, EVER HEARD of SMART APPLIANCES? The power company has plans to shut off devices in the future if they think you're using too much power with that device. At least that's what globalist/environmentalist snowflakes want.
The power company would NOT need your damn modem (internet) to shut off that appliance. They can shut it off communicating with it through the damn power line in the house. The smart meter acts as a modem. The NSA and CIA have devices they can connect to the power line to act as a modem. YOU JUST DON"T GET IT, DUDE.
Just STOP... lol
You're making a damn fool of yourself. You're simply fortunate most people do not know this. Which means they are unaware you are making a fool of yourself.