Well now, David, by your own admission: HD isn't helping deter or delay what you insistently refer to as "AM's death." Taking all of the posts here together including your own, HD-AM Radio figures somewhere between "irrelevancy" and "extremely harmful" when it comes to AM's fortunes these days in the competitive radio marketplace. The best-case scenario is that HD isn't helping. The worst case is, it's driving audiences away and is preventing major AM signals from getting the Arbitron credit they deserve because of PPM interference.
Contrast these unfavorable outcomes with the outlandish blue-sky claims made for HD Radio for five years now - that HD was necessary to "save" AM (and FM for that matter) radio. That "the future of radio is digital." That "sound quality will sound the death knell of AM." And so forth. Everyone knows the ridiculous arguments.
All this being said: what's the justification for the expense and endless problems imposed by HD Radio? At best it doesn't seem to be making any difference for AM. According to....YOU. As well as many others. So isn't it time to send this system to the dumpster, where it belongs?
Contrast these unfavorable outcomes with the outlandish blue-sky claims made for HD Radio for five years now - that HD was necessary to "save" AM (and FM for that matter) radio. That "the future of radio is digital." That "sound quality will sound the death knell of AM." And so forth. Everyone knows the ridiculous arguments.
All this being said: what's the justification for the expense and endless problems imposed by HD Radio? At best it doesn't seem to be making any difference for AM. According to....YOU. As well as many others. So isn't it time to send this system to the dumpster, where it belongs?