Communications satellite of a GEO satellite. Like LEOs, these satellites don’t maintain a stationary distance from the earth. This is in contrast to the geostationary orbit, where satellites are always approximately from the earth. Typically the orbit of a medium earth orbit satellite is about above earth. In various patterns, these satellites make the trip around earth in anywhere from 2 to 8 hours. In 1962, the first communications satellite, Telstar, was launched. It was a medium earth orbit satellite designed to help facilitate high-speed telephone signals. Although it was the first practical way to transmit signals over the horizon, its major
Satellite contribution link from a studio to a DTH uplink centre is usually provided within a single satellite footprint, the Astra 4A/Sirius 4 satellite provides for an innovative intercontinental contribution link service using a single Ka-band transponder with a European footprint and a Ku-band transponder serving southern Africa. Contribution feeds can be transferred from one region to the other, and in one frequency band to the other, in a single satellite hop. Satellite contribution A Satellite contribution link or service is a means to transport video programming by a satellite link from a remote source (such as an outside broadcast unit) to