An Evolutionary History of HD Radio Philipp Schmid provides a history of how the IBOC broadcast systems architecture has evolved and hardware platform choices available to equipment manufacturers today. Based on an NAB Broadcast Engineering Conference paper, his article is part of the new Radio World eBook "HD Radio Evolves."
"No AM Radio But Why?" Radio World readers knew that BMW would omit AM radio from a few car models; now we hear how this decision plays out for one electric car reviewer. It's interesting to read both his comments and those of his readers about AM radio.