![]() ![]() With the switch to digital, the space freed up by the unused analog signals will be returned to the federal government and auctioned off to new providers and services, according to Brian Dietz, a spokesman for the National Cable and Telecommunications Association. It has the ability to be smarter, so it has more functions." "It's a crisp signal and also has the ability to be high-definition with surround-sound encoded into it. "The digital signal is more concise," said Megan Pollack, a spokeswoman for the Consumer Electronics Association. Digital television, which also is broadcast through the air, occupies about 25 percent less space on the spectrum than analog - and offers more services. ![]() ![]() As a result of legislation passed by Congress in 2005, they will have to convert their transmission to digital signals by February 17, 2009.īroadcast signals travel over the electromagnetic spectrum, which carries all sorts of transmissions, including AM and FM radio, shortwave radio, radar and television, explained Duke University professor Stuart Benjamin.Īnalog TV signals occupy a big chunk of the spectrum. Since the advent of television, stations have sent their programming via analog signals. (CNN) - An era in American broadcasting history will come to an end before the decade is out.Įarly in 2009 all over-the-air TV stations must switch the way they transmit their programming, bringing a number of changes not only to broadcasters and viewers, but to emergency responders and digital innovators as well. ![]()
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