UNIVERSE
SATELLITESICY BODIES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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2 GHz
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4 GHz
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6 GHz
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8 GHz
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Detailed explanation-1: -It’s because lower frequencies get reflected by atmospheric bands and cannot penetrate to get through to the satellite.
Detailed explanation-2: -C-band (4–8 GHz) Primarily used for satellite communications, for full-time satellite TV networks or raw satellite feeds.
Detailed explanation-3: -A 6/4-GHz small-capacity satellite communications system (SC-31 system) is described that minimizes interference with terrestrial radio-relay networks operating in the 6-GHz band. An outline is given of the system and the channel control technique.
Detailed explanation-4: -Answer: 6/4 GHz frequency of the microwave is mostly used for satellite communication because of the following reasons: Absorption by rain attenuation is very low below 11 GHz. There is no change of polarisation when the wave passes through the ionosphere at this frequency.
Detailed explanation-5: -Nearly all C-band communication satellites use the band of frequencies from 3.7 to 4.2 GHz for their downlinks, and the band of frequencies from 5.925 to 6.425 GHz for their uplinks.