As I've said before, this idea of going ALL-DIGITAL for radio should have been done back in the early 2000's.
At that time people were hooked on it, TV was doing it, AM & FM radio should have done it at the same time.
Of course, it would have cost stations money but you'd have at least 5 or 10 years to do it and for people to buy the new digital radios that I feel would appear.
But nobody cared then (early 2000's), but that's the past.
I know I am repeating what I said awhile back.
Now that some stations are streaming and everybody can listen on a Smartphone, well who cares about a radio - I still do but that's just me.
Like I said before - if now radio (AM & FM broadcasters) along with the FCC / NAB / etc. were all behind it and have the FCC treat this "kind of like" the analog to digital TV transition back in the early 2000's I think radio would make its mark again by being listened to on a new radio (a digital radio) and not a Smartphone, but then you might also see a radio receiving circuit is a Smartphone too if radio went digital.
I know in the TV transition the FCC wanted some of the TV frequencies for wireless so that contributed to the analog to digital switch for TV, because some made money . . . but radio has been around a longtime. Rather than increasing HD power and running the analog & HD thingy together radio should make the push for and go all digital.
If there are no new frequencies for radio to use, then do a "flash cut" . . . and sell converters for people until they get a new digital radio.
Radio should do this switch so it will be around another 100 years . . . completely over the air.
By the way there is another idea floating around by Sinclair Broadcasting (a TV broadcast group) . . . to lease space on an ATSC 3.0 TV's channel to radio broadcasters and put radio on it, in digital. Sinclair is running test in Seattle . . . per Sinclair the coverage goes out like a good FM signal 50 miles or more.
You can put, 40-50 stations in an area on the TV signal.
I would guess they'd also be available in time a separate receiver (an ATSC 3.0 radio receiver) if one wanted to just listen to the radio stations on the TV signal.
ATSC 3.0 is "slowly" being put out there, its roll out is not moving as fast as TV would like and there are plans to step up the introduction, yes people will need new TV's but the major TV groups involved are, like I said hoping to "increase" the movement on the ATSC 3.0 roll out.
Sinclair also has put ATSC 3.0 in Smartphones (its own test) and it works great they say, so you'd be able to watch ATSC 3.0 TV & listen to radio (via ATSC 3.0) on your Smartphone off the ATSC 3.0 signal.
from recent article,
ONE Media Moves Forward With “Radio Over ATSC 3” - Radio World
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