NextGen TV (also known as ATSC 3.0) is the new, advanced television standard that promises to revolutionize the way we receive and view our TV programming. It uses very efficient signal coding, significantly improving TV reception. It also provides for sending of messages, such as emergency alerts, which can even turn your set on to receive them.
Network broadcasts in Washington, DC using the NextGen TV standard are expected to begin in 2021. So far, TV sets to receive them are expensive large-screen models, but the costs are expected to drop, and set-top tuners should be available soon to convert existing sets to receive these broadcasts.