Broadcasters have two strategic advantages over cable and satellite providers. For one, local broadcast stations know their markets in a way no national programmer can. For another, broadcast television is wireless and eminently portable; viewers don\'t have to plug into the cable network or to a carefully aligned satellite dish. They don\'t even have to find small hot spots, since receivers pick up broadcast signals almost anywhere. But broadcasters are only now starting to use HDTV in their local programming, primarily for news. And U.S. digital service does not support mobile service to vehicles and pedestrians with handheld devices. It is telling that reassigned broadcast spectrum is being used to offer mobile video services that broadcasters themselves are unable to support. Nor is this now a priority for them.
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