I notice that episodes of the Andy Griffin Show are shown on UNC-DT, one of the digital subchannels of the University of North Carolina statewide public (PBS) TV network. Andy is seen on UNC-NC, a channel dedicated to all things North Carolina. How is this possible? The program is shown on commercial stations in just about every TV market in the state, including WAXN/64 in Charlotte. Usually the program is aired late at night. BTW, I have to say UNC-TV is one of the best PBS affilates anywhere...