Q. A Van Allen belt is a layer that contains

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Q. In cellular telephony, each band is divided into

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Q. The Iridium system can be used for Navigation, Voice, Fax, Paging and

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Q. In cellular telephony, bands and Channels of Interim Standard 95 (IS-95) uses two bands for

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Q. Orbital speed is based on the distance from the

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Q. In 1998, the Iridium system started with

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Q. The Iridium System has 66 satellites divided into

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Q. Third generation of Cellular Telephony has a band of

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Q. The L satellite frequency band has the bandwidth of

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Q. The signal from a satellite is normally aimed at a specific area called the

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Q. To provide direct worldwide communication using handheld terminals, is the purpose of

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Q. In cellular telephony, The size of the cell is not fixed, can be increased or decreased depending on the population of

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Q. In Satellite Networks, according to Kepler's law, the period of moon is

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Q. The S satellite frequency band has the bandwidth of

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Q. Teledesic has 288 satellites in

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Q. In an artificial satellite network, the orbit travels around the

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Q. In cellular telephony, Interim Standard 95 (IS-95), produces data at a basic rate of

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Q. In cellular telephony transmission, a voice channel is digitized to

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Q. The S satellite band has the Up-link of

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Q. MEO stands for

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