Just a little tech note... AM cannot go 'digital' due to its type of propigation (Amplitude Modulation) you simply cant modulate the amplitude fast enough. It (AM) is indeed a dying mode.
AM is actually the least efficent type of propigation around not to mention the spectrum they are 'locked' into sucks. FM being the second least efficent. Single side band or SSB beats them both hands down but can sound like donald duck.
