Analog-to-Digital Conversion

Currently, televisions work by picking up analog signals broadcast by television stations. Digital television (DTV) is a new type of broadcasting technology that allows for much better picture and sound quality, among other benefits. DTV also allows for more programming using less of the broadcasting spectrum. This means that while using the same amount of bandwidth to currently broadcast one channel, stations will now be able to broadcast a multitude of channels. So, instead of having just a Channel 10 on typical analog TV, you can now have a Channel 10.1, 10.2, and 10.3, using only the amount of bandwidth as the original single channel did on analog TV This is called multicasting, and is already being put to use by many television stations around the nation.

Congress recently passed a bill mandating the conversion to all digital television broadcasting, starting on February 17, 2009. This conversion will free up analog signals for use by public safety communications, such as police, fire, and emergency rescue, and for some advanced commercial wireless services.

The conversion to DTV isn't nearly as daunting as it may sound. If you currently have an analog television, you'll simply need to purchase a digital converter box, if you want to continue to receive free, over-the-air programming on your television. In order to help with the cost of converting, Congress created a TV Converter Box Coupon Program, which will cover about $40 of the cost of a new digital converter box.

If you have an HDTV or a DTV with a digital tuner and still want to receive free over-the-air programming, the only thing you may need is an antenna, either on your roof or a smaller version on your television set.

If, however, you have a subscription to a cable or satellite service and all of your televisions receive programming from them, you likely won't need to purchase any new equipment at all!