[seiferteric]

I looked into this "earth mode" radio recently and even tried it out in my backyard without too much success. My question is, does the FCC have jurisdiction over this? Seems like it's not really radio so much as making a circuit using the earth as the conductor.

[api]

If the FCC doesn't regulate this could you use this for metro mesh networks? Of course I assume you'd have to be rigorous about avoiding leakage.