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Amplitude Modulation

I recently purchased a Sangean HDR-141 compact HD Radio receiver after the local station that broadcasts baseball decided to move their AM/MW2 station (and most of their FM stations) exclusively to digital HD Radio broadcasts. In their announcement, they established that the time was right now that 20% of their audience was equipped to listen. That’s… an astonishingly low percentage, especially given that the technology was approved as the U.S. digital radio broadcast format over fifteen years ago.