My question is which AM is the first to go all digital? Once that happens, quality of the signal can increase and interference can decrease. However, a few things. Although many car makers are adding HD Radio, the majority of the population don't have HD Radios in their cars or homes.
The next issue becomes the format of these stations. Particularly, we now have digital AM stations with better sound and range. Right now, AM in Boston is WBZ-AM, the talk radio stations, Oldies, national sports talk (WEEI-AM running 24/7 ESPN Radio), foreign language stations, and religious stations. Many of these repeat on HD-2/3 on FM and FM Translators. What programming is out there that could benefit from Digital AM? So now we have an AM band that sounds nearly as good as FM, with less interference. What do we add and remove from it? Sure, WBZ 1030 would benefit. As of now, WRKO would too. How many more will? How many FM formats didn't pan out? Would those have a shot on AM? Could there be life for an Amp Radio on Digital AM? How about an Alt format? The list goes on.
I know I shifted gears from the main topic; but in my mind, the next logical step is digital. However, where it can revitalize the band, I don't see where it will help programming. We would need to find a reason for people to flip to AM, where virtually most people don't even recognize that AM exists.