You have probably seen a satellite dish hanging on a roof top of a house, apartment or even a truck. So, television use satellite,but it is not the only electronic that use satellite. There are the phones, the internet and radio and so many more. The system that makes this possble is called the "Direct Broading Systems." This system is responsible for the transmission of communication to many homes and businesses. The DBS was first used in the U.S.A in 1993, it uses the "geostationary Orbit" to receive television signals sent up from the earth surface, which are then "amplify."When they are "amplify," they are transmitted back down to the earth. The "uplink" band transmit signals down, while the "downlink"picks up the signals by the means of "antenna."
In the early late 70's early 80's I recall my neighbor getting satellite television installed.
ReplyDeleteThe difference between then and now is that his satellite dish was 1/2 as large as his house and was planted in his backyard not on the roof.
It was neat to look at, very futuristic. Most of the neighborhood saw it as an eye sore. As his neighbor we could tell when he was having bad reception because it would make this mechanical noise as it moved from left to right trying to align itself with the required satellite in space.
Today satellite dishes are so small (like the one in the image used) they can hardly be noticed unless you are specifically looking for them and they don't require realigning with their satellite feed.
Like everything else electronic as transistors continue to get smaller, they products they power also get smaller.