Although I'm pleased that AM Carrier-Current was covered, since it practically never is, yet still a valid way to broadcast licence-free, I would have to agree with KDX Radio's comments that the expanation of the very subject was very vague, to say the least. Very little tech info, and pretty much no talk of the main means of RF coupling today, which is via the the existing power lines, or that during WWII HAM's were not allowed to transmit via radiating with an antenna, but that carrier-current coupling was allowed. And from what I've heard, many did that. Still, the very fact that Jennifer at Radio Survivor was willing to just cover this subject still gives me the thumbs-up.