Just a few years ago, ATSC 3.0 was hailed as the savior of free over-the-air (OTA) television. It promised to bring 4K video and Dolby Atmos audio to every home in the United States, and surprisingly, broadcasters were actually interested in the idea. So, why can’t I watch 4K antenna TV yet?
Source: Why Can’t I Watch 4K OTA TV Yet?