Well, I think everyone here knows the botched history of HD radio. And that what resulted were HD side-channels that initially didn't "lock in" well, then were largely neglected, and eventually were used for a whole other purpose--to feed translators.Both of those things have existed for ten years, and we haven't seen a big demand for HD radio. If they are included for free when they buy their cars, people might use them. Otherwise, they want it to work on their standard radio, which isn't possible. The other issue is very few electronics manufacturers make radios any more.
KYW has been available on HD radio for a while, and they have more listeners now that they have an FM station.
In the thought experiment I presented, consumers might be hearing an easier-to-understand concept--certainly easier to accept than the silly "stations between the stations" tag from yesteryear. People know of the AM band...meaning, they know it exists...they just also know that it sounds terrible and there's no longer much of interest there. Stations "between stations" from of a whole new technology that requires buying a new receiver (which was pretty expensive at the time) is a lot more foreign an idea than "those stations my parents and grandparents used to listen to [or that I may even remember from my own childhood] suddenly have spoken word [or even music!] formats that I wish I could hear."
If people begin to hear that AM stations now sound as clear as FM stations...and that they now have compelling content...and that they're available in their friend's or family member's or co-worker's new car, it could start a trend of consumers looking for that feature when shopping for their own next car. I don't think it's an impossibility that automakers could take note...and if the automakers want electronics companies to manufacture more HD receivers, that's what the electronics companies will do. After all, people have decided to buy one car over another for reasons that were a lot dumber than the radio.
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