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  2. Unified S-band - Wikipedia

    en.wikipedia.org/wiki/Unified_S-band

    The Unified S-band ( USB) system is a tracking and communication system developed for the Apollo program by NASA and the Jet Propulsion Laboratory (JPL). It operated in the S band portion of the microwave spectrum, unifying voice communications, television, telemetry, command, tracking and ranging into a single system to save size and weight ...

  3. Satellite Internet access - Wikipedia

    en.wikipedia.org/wiki/Satellite_Internet_access

    How satellite internet works. Satellite Internet generally relies on three primary components: a satellite – historically in geostationary orbit (or GEO) but now increasingly in Low Earth orbit (LEO) or Medium Earth orbit MEO) [20] – a number of ground stations known as gateways that relay Internet data to and from the satellite via radio waves (), and further ground stations to serve each ...

  4. Satellite modem - Wikipedia

    en.wikipedia.org/wiki/Satellite_modem

    Satellite modem. A satellite modem or satmodem is a modem used to establish data transfers using a communications satellite as a relay. A satellite modem's main function is to transform an input bitstream to a radio signal and vice versa. There are some devices that include only a demodulator (and no modulator, thus only allowing data to be ...

  5. Set-top box - Wikipedia

    en.wikipedia.org/wiki/Set-top_box

    A typical modern set-top box, along with its remote control - pictured here a digital terrestrial TV receiver by TEAC. A set-top box (STB), also known as a cable box, receiver, or simply box, and historically television decoder or a converter, [1] is an information appliance device that generally contains a TV tuner input and displays output to a television set, turning the source signal into ...

  6. Sat-IP - Wikipedia

    en.wikipedia.org/wiki/Sat-IP

    The Telestar B1 client receiver displays SAT>IP channels from a SAT>IP server as well as acting as a media player for data from the USB and SD sockets in the side of the unit. The rear panel of the Telestar B1 client receiver showing the HDMI, S/PDIF, and AV jack outputs, USB for PVR recording and the Ethernet connection to the IP network.

  7. Dreambox - Wikipedia

    en.wikipedia.org/wiki/Dreambox

    The Dbox2 was a proprietary design distributed by KirchMedia for their pay TV services. The bankruptcy of KirchMedia flooded the market with unsold boxes available for Linux enthusiasts. The Dreambox shares the basic design of the DBox2, including the Ethernet port and the PowerPC processor. Its firmware is officially user-upgradable, since it ...

  8. Satellite navigation - Wikipedia

    en.wikipedia.org/wiki/Satellite_navigation

    A satellite navigation or satnav system is a system that uses satellites to provide autonomous geopositioning. A satellite navigation system with global coverage is termed global navigation satellite system ( GNSS ). As of 2024, four global systems are operational: the United States 's Global Positioning System (GPS), Russia 's Global ...

  9. Satellite navigation device - Wikipedia

    en.wikipedia.org/wiki/Satellite_navigation_device

    A satellite navigation device, satnav device or satellite navigation receiver is a user equipment that uses one or more of several global navigation satellite systems (GNSS) to calculate the device's geographical position and provide navigational advice. Depending on the software used, the satnav device may display the position on a map, as ...

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