An IFL, or Interfacility Link, is a cable system that is used in facilities to connect an outdoor unit and an indoor unit. An outdoor unit refers to the satellite receiver or coaxial cable that connects a service provider to a company while an indoor unit refers to the coaxial cables, routers, or transmitters inside the building. IFLs are used to minimize the amount of interference received on the transmission by rerouting the signal through a combination of different technologies.
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8PSK (8 Phase Shift Keying) is a phase modulation algorithm.
Phase modulation is a version of frequency modulation where the phase of the carrier wave is modulated to encode bits of digital information in each phase change.
The "PSK" in 8PSK refers to the use of Phased Shift Keying. Phased Shift Keying is a form of phase modulation which is accomplished by the use of a discrete number of states. 8PSK refers to PSK with 8 sates. With half that number of states, you will have QPSK. With twic
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Medium Earth Orbit (MEO) refers to a satellite which orbits the earth at an altitude below 22,300 miles (geostationary orbit) and above the altitude of Low Earth Orbit (LEO) satellites.
Medium Earth Orbit represents a series of tradeoffs between geostationary orbit (GEO) and Low Earth Orbit (LEO).
Medium Earth Orbit enables a satellite provider to cover the earth with fewer satellites than Low Earth Orbit, but requires more satellites to do so that geostationary orbit.
Medium Earth Orbi
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An LNB (Low Noise Block aka LNC- Low Noise Converter) is used for communications (broadcast) satellite reception. The LNB is usually affixed either in or on the satellite dish.
The LNB's purpose is to utilize the super heterodyne effect and amplify and convert a wide block (band) of frequencies. This helps compensate the signal loss associated with typical coaxial cable at relatively high frequencies.
The term 'low noise' relates to the quality of the 1st stage input amplifier transistor,
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The Ku band (Kurtz-under band) is primarily used for satellite communications, particularly for editing and broadcasting satellite television. This band is split into multiple segments broken down into geographical regions, as the ITU (International Telecommunication Union) determines.
The Ku band is a portion of the electromagnetic spectrum in the microwave range of frequencies ranging from 11.7 to 12.7GHz. (downlink frequencies) and 14 to 14.5GHz (uplink frequencies).
The most common Ku
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A weather satellite is a satellite which is used by meteorologists to gather information about the weather.
Weather satellites give meteorologists a view of weather patterns over a very large area. This enables meteorologists to track large weather patterns and make more accurate predictions of future weather behavior.
In addition to visual monitoring, weather satellites may also use thermal imaging, X-ray sensors, high-energy proton detectors, alpha detectors, and energetic particle s
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C Band is the original frequency allocation for communications satellites.
C-Band uses 3.7-4.2GHz for downlink and 5.925-6.425Ghz for uplink.
The lower frequencies that C Band uses perform better under adverse weather conditions than the Ku band or Ka band frequencies.
C Band Variants
Slight C Band frequency variations are approved for use in various parts of the world.
Band
TX Frequency
RX Frequency
Extended C Band
5.850 - 6.425 GHz
3.625 - 4.200 GHz
Super Extended
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Weather satellites are now operated by the United States, Japan, Europe, Russia, India, and China.
These weather satellites provide invaluable information to meterologists and climatologists. In addition, individuals all over the globe enjoy these fascinating pictures of the Earth from outer space.
Free Weather Satellite Images on the Web
The NOAA's Geostationary Satellite Server provides visibile light, infrared, and water vapor images of the Continental United States, Puerto Rico, and
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GPS stands for Global Positioning System. It refers to a system of satellites that constantly transmit a signal, and a GPS terminal that picks up those signals and calculates its position on Earth by measuring the distance between itself and two or more GPS satellites (by measuring the time it takes to receive the signals).
How to Use GPS
GPS operates using trilateration. Trilateration is the process of determining the position of an unknown point by measuring the lengths of the sides of
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Rainfade refers to a phenomenon that occurs during strong rain or snowfall in which satellite signals are prevented from reaching their destination. Rainfade may also refer to extensive cloud cover, strong winds, or any other environmental effect that distorts a satellite broadcast, but is most often observed during rainfall. Rainfade may also refer to the slow speeds of WiFi and other wireless data transmissions during storms or other undesirable weather conditions that are caused by the sa
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