Analog to Digital Advantages

Switching from analog to digital let broadcasters offer higher picture definition, because a digital signal can be compressed far more than an analog signal. Compression allows stations to fit more information in the signal. That means you're getting a clearer image with digital television than you would from an analog signal. In fact, even though digital signals get weaker with distance, just as analog signals do, digital signals won't degrade in quality. As long as you have a signal, you'll get a clear picture [source: Cringely].

There's another advantage of having additional bandwidth available. Using digital broadcasting, local stations are able to offer more programming to their viewers than they could with an analog signal. How? Multicasting, or broadcasting several shows within a single frequency. Many stations across the United States are already multicasting. For example, WRAL in Raleigh, N.C., broadcasts a 24-hour news feed alongside its regular programming [source: USA Today].

Digital TV Multicasting

If you have a digital-to-analog converter box and a terrestrial antenna, you can take advantage of your local station's multicasting, if they offer it. Cable and satellite providers may not necessarily add the additional stations to their lineups, however, so you may not see them if you subscribe.

If you still need a converter box, you may still be able to get a $40 coupon from the U.S. government at dtv2009.gov, if there are any still available. You could also buy a new television with a digital tuner, if that's what you would prefer, though that's a more expensive option.

Hiccups in the System
The transition from analog to digital didn't go completely smoothly. The Community Broadcasters Association, which represents owners of low-power television stations, filed a lawsuit in 2008 that would block sales of converter boxes that block analog signals. Even boxes with pass-through capability require the user to turn off the converter box, according to CBA President Robert Bruno [source: International Herald Tribune]. And though the FCC requires retailers to label televisions with analog tuners to warn consumers about the coming switch to digital TV, several major retailers have been fined for failing to label their goods properly [source: SF Gate].

For more information about digital television and related topics, tune in to the links on the next page.