ORIGINAL: Mode One
Bruce, thanks for the answer to my statement about not knowing what "Shift" is. We could go on to say the PPM is another name for FM and PCM = Pulse Code Modulation. Now, ain't I smart? None of this helps me fly better, though! Now, why is that?
While you could say PPM = FM and PCM = Pulse Code Modulation, it wouldn't really be saying anything since PCM is also FM!