What happens after TV's mainframe era ends next February?
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Remember television? For most of its history, TV wasn't cable, satellite or YouTube. It was radio with low-res moving pictures. On the transmitting side it was an extension of radio, with transmitters on towers, mountains and high buildings, serving viewers with signals within a range limited by frequency and terrain. Like FM radio, TV was on VHF bands. In the U.S., channels 2-6 were spread from 54 to 88MHz (ending just below the FM band) and channels 7-13 ran from 174-216Mhz.
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