How Does a Digital Antenna Work

•To understand how a digital antenna works, you must first understand how television signal transmission works. A television station will transmit a signal containing its programming in essentially a straight line. (This is called "line of sight.") However, due to the curve of the Earth (which changes roughly every 80 or so miles), televisions farther away from the transmission source won't necessarily be able to pick up that signal. A digital antenna allows your television to pick up that signal, as long as it is within the overall range of the source, despite the curve of the Earth.

•Unlike having digital cable, where your television programming is sent directly into your home via a cable, local TV stations will simply send out a broadcast and whoever is within range can pick up the signal at no additional charge. Roughly 80 percent of all households will be able to pick up at least five digital stations for free with a digital antenna, barring any physical obstacles like mountain ranges. The digital antenna will receive the television signal and convert it into audio and video information that can then be displayed by your television.

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