In a message dated 6/15/2006 8:37:46 PM Eastern Daylight Time, stevenc@xxxxxxxxxxxxxx writes: Well, I can recall an early "stereo experiment" that involved a sort-of- local station that had both AM and FM operations...and broadcast one channel on each for a half-hour program... WQXR-AM/FM did it in the late '50s. I taped a couple of the shows. (R-R) Don Chichester