It's nearly impossible to buy a TV today that isn't a high-definition set. But just because the set is an HDTV doesn't mean you're actually watching a high-def picture. In addition to an HD-capable TV, you need an HD programming source. Your cable or satellite company will be happy to upgrade you to high-definition, though in most cases you'll pay for the privilege. On the other hand, when it comes to network TV, you can watch with no additional fees at all, thanks to over-the-air HDTV. … Back to Article
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