What is free-to-air digital television?
Free-to-air television signals have broadcast programs in the analog format for over 50 years. Digital television transmits a broadcast signal by encoding it as 0s and 1sthe digital code used in computers. Digital television signals can be compressed to provide four or more channels in the bandwidth required for one channel of current standard television, yet provide better sound and about five times more picture information (picture elements, or pixels) than conventional television. Digital television therefore makes more efficient use of spectrum and allows broadcasters to provide a greater range of featuressuch as multichannels, high definition television (HD TV) and an electronic program guide (EPG). Find out more about these terms further down this page.
