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Today’s 4K/Ultra HD sets look so amazing with the current broadcast signals imagine what actual 4K broadcasts will look like.
ATSC3.0 looks very cool, and looks like it will be not too big a deal for broadcasters to adopt. Note that a single transmitter sends 3 simultaneous feeds at one time, 4K, 720P, and 480! Why three? Much easier for mobile broadcast of lower res- setting the stage for in-vehicle reception.