Donut417 From my understanding that was one of the arguments to sunset ATSC 1.0. Is so they can free up the bandwidth to offer 4K. At least that was the argument.
But, while ATSC 1.0 wasn’t designed for 4K programming, it is possible to broadcast 4K content using the latest, more efficient codecs, like HEVC:
Free 4K OTA TV is Here But Using ATSC 1.0 Not ATSC 3.0 Next Gen TV
By Luke Bouma, Cord Cutters News - April 7, 2024
https://cordcuttersnews.com/free-4k-ota-tv-is-here-but-using-atsc-1-0-not-atsc-3-0-next-gen-tv/
One of the big selling points of Nextgen ATSC 3.0 was that it would someday bring 4K for free to your antenna TV stations offering ABC, CBS, FOX, and NBC.
Now a local TV station in Eugene, Oregon, is offering multiple 4K broadcasts on the older ATSC 1.0 standard according to a report from the Antenna Man.
To do this, a low-powered TV station, KO31M-D, made some changes to the codecs it uses. Now most modern TVs can get TV in 4K for free from OTA TV.
The problem is some older TVs do not support this new standard but most modern TVs do. ….
TV Station Launches Multiple 4K Broadcasts OTA on ATSC 1.0
However, the National Association of Broadcasters (NAB) knows that ATSC1.0 doesn’t use DRM, so no opportunities to make $$$ there, as with ATSC 3.0. 😉