ECE :: Satellite Communication
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Regarding TASI which one of the following statements is wrong?
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Master control facility (MCF) for INSAT-2 series satellites is located at
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The communication satellite INSAT-IB had to take up the job of INSAT-IA because the latter collapsed within __________ months of its launch.
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The distance of a synchronous satellite from Earth's surface is __________ km.
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In satellite communication, highly directional antennas are used to
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The average noise temperature of Earth, as viewed from space, is __________ °K.
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Low-orbit satellites are not used for communications because they
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After the death of INSAT-IB, the mainstay of the entire Indian satellite network for some time to come would be
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Which statement out of the following statement is wrong?
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A.
It snatches the channel in his speech and may allocate it to another speaker needing it.
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B.
The same speaker is reassigned a channel almost instantly when he speaks again even when the circuit is heavily loaded.
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C.
It increases the overall utilization of the transmission channel
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D.
Intercontinental callers sometimes confuse the effects of TASI with the effects of satellite delay.
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A.
Attenuation of satellite signals by rain and fog varies almost inversely with the angle of elevation
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B.
At 12/4, GHz link frequencies, signal power loss due to rain and fog is much greater than at 4/6 GHz frequencies
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C.
The distance between satellite and Earth station varies slightly with angle of elevation
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D.
At present 4/6 GHz geostationary satellites are being parked in geosynchronous, orbits at least 10° apart
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