Comment by genewitch

you can detect FM with an AM radio - "slope detection". This was in the back of my head when i typed this comment. A memory of picking up KFI on a tooth filling when licking the lid from a pudding when i was a kid. I had the real silver colored fillings. I used to get zapped, every time, and it was painful. It had to have been the semi-conductive amalgam, my arms acting as a dipole, and my skull and body the ground plane. But ancillary to that, i remembered the little electronic hobby kits we had, and a wire, a resistor, and a speaker was about all you needed to hear KNX 1070, a clear channel broadcast AM station in Orange County, CA.