An outlet is a good system to put power into, and it would probably be hard to track what room it's coming from, so that's a cool idea. Another idea for inside might be a loop of wire around the room, and a tuner to feed that.

That tuner you used is pretty much the same thing it takes for carrier current on mediumwave, a series capacitor to tune out the big inductance long AC lines usually have, and impedance transformation to match the usually lower impedance of the line.

I went to Wiki to read about Reynard the Fox, from the original story, knowing little about it.

Boomer