A Description and Explanation of Satellite Broadband and How It Works

Whilst the advent of its RADSL variant may have increased the range of ADSL from 3.5km to 5.5km, the fact is that the technology will always be literally beyond the range of many living in rural areas. In theory, satellite communications can reach almost anywhere, and satellite broadband is becoming an increasingly feasible solution for those for whom ADSL and cable are not options. The technology is well established and typically all that’s needed is a dish on or near the subscriber’s home and a modem/router unit inside. This needs to have an unobstructed view of the satellite in order to work. This means that no buildings, trees or other permanent obstruction should block the path between the dish and the satellite. Inside the premises, the dish is typically connected by two standard coaxial cables to a modem/router, which in turn connects to a PC via either a USB or Ethernet port. Some systems provide two-way satellite communications and so require no telephone connection, dial-up account or other ISP. Others are hybrid, combining a conventional narrowband ISP dial-up connection for uploading information to the Internet with a broadband satellite downlink. The equipment needs to be installed professionally, but once fitted, the hardware is no more difficult to set up or use than a standard ADSL or cable modem. Some systems provide only a USB connection on low-end systems, with Ethernet costing more. A basic system allows a single PC only to be connected. Higher-end systems allow multiple PCs to be hooked up by establishing a network in which the satellite modem/router connects to the LAN through an Ethernet port....

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