To Hi-Def, or not to Hi-Def
What's all this talk about digital television, high definition television, transition dates and new TV sets?
Those are questions many of us are asking ourselves these days. Now that Congress has set a February 17, 2009, date for the completion of the " DTV transition," what do we need to do? 
Viewers who currently get their signals "over the air," using a rooftop antenna or rabbit ears, will have to make some adjustments. Either they will have to obtain a converter box to change the digital signal to analog, or they will have to buy a digital television set.
If you are a cable or satellite customer, you may need a set-top box to receive DTV signals and convert them into the format of your current analog television, even after the DTV transition is complete. A DTV set-top box also may receive multicast channels and high definition programming and display them in analog picture quality. Check with your cable or satellite provider to determine if and when you will need a set-top box.
Beginning in 2008, U.S. households may be able to obtain up to two coupons worth $40 each toward the purchase of converter boxes. The program will be run by the National Telecommunications and Information Administration, which will issue rules regarding the coupons in the future.
You might be wondering why the country is "going digital." There are two important reasons. The sound and picture quality of digital television is much better. It is equivalent to CD quality sound and video. The second reason is that digital technology is a much more efficient use of the electromagnetic spectrum than analog technology. Spectrum freed up by the transition will be transferred to public safety uses and will provide spectrum for advanced wireless applications.
Those who do opt to go digital will have a transformed television viewing experience. Images and sound are captured using digital technology, delivering a movie-quality experience, multicasting and interactive capabilities. That means better quality, more choices, and more control over your television. There are many quality levels of digital television programming.
To answer these and many other questions and to help us navigate the digital transition, the government has an excellent, user-friendly Web site at www.dtv.gov.