MPEG-2 is a worldwide satellite transmission standard for digital broadcasting. It is the wave of the future, because it can allow 8 or even 10 video signals to occupy the same space as one channel of analog transmission.
Free to Air channels are digital MPEG2 channels that are not scrambled and require no subscription or monthly payment. They are provided free of charge and are perfectly legal to receive with an FTA receiver. You can find a listing of these channels on http://www.lyngsat.com, http://www.satcodx.com or www.ftalist.com.
With this unusual mix of compatible free-to-air systems the opportunity for a great number of channels to become available to North American viewers is always present. There are always a few channels in the transition between in-the-clear (free to air) and subscription transmission mode (encrypted), with some of these channels in the clear for years. However, we only concentrate on the channels that continue to transmit in a free mode or true free to air.
A great number of the channels available free-to-air in MPEG-2 are from countries outside of North America. This offers in North America a big window into their native culture daily at no additional cost. As the fascination for viewing additional cultures builds and grows, so does the future of FTA.
There are many free to air channels available in North America on satellites such as Galaxy 10R, AMC4, Telstar 5, AMC3, etc. There are from the USA and from around the world. See http://www.lyngsat.com/america.shtml for a complete listing of what is available. Anything with an F designation is FREE TO AIR.
While no one can guarantee free channels you will continue to receive FTA channels as long as they remain free and not encrypted. If you have a receiver that has DiSEqC 1.2 switch, you can easily see more satellites while getting many more channels by adding a DiSEqC motor to move your dish.
Nonetheless, free-to-air satellite TV is a viable addition to any home video system, for use in locations especially where terrestrial over-the-air reception is poor and additional channels are desired. High-definition television in the United States Digital terrestrial-type ATSC signals, where available, most often tend to be low-power and therefore coverage outside major cities depends largely on Satellite TV.