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TV as we know it will change significantly in the U.S. next year. Most stations now broadcast analog and digital signals, but a new law requires them to transmit only digitally as of Feb. 17, 2009, shutting down the analog systems they've used since the dawn of television. The switch might seem disruptive, but there's an upside. Digital TV offers better picture and sound to viewers who get free TV via a traditional antenna. It also offers more channels, including high-definition channels and subchannels with programs that differ from those of the main station.
But there's a catch: A TV hooked up to an antenna won't be able to get over-the-air broadcasts if it doesn't have a digital tuner. You'll have to change your setup to keep receiving free TV on that set. That won't affect service for sets that have a digital tuner or are used with a for-pay TV service. An analog set hooked up to cable, satellite, and phone-company fiber-optic services should function as it does now. Here are the facts:
Which TVs will be affected?
1 TVs that have only an analog (NTSC) tuner will not be able to get broadcast programming via antenna without some additional gear. Those sets include:
* Older picture-tube TVs.
* HD-ready TVs bought several years ago.
* Video monitors, which have no built-in tuner of any kind.