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Why are VHF, UHF, and microwave signals used in satellite communication?(a) More bandwidth(b) More spectrum space(c) Are not diffracted by the ionosphere(d) Economically viable |
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Answer» Right answer is (c) Are not diffracted by the ionosphere The explanation is: VHF, UHF, and microwave signals penetrate the ionosphere with little or no attenuation and are not refracted to earth. Lower frequencies undergo total internal refraction and get reflected back to earth. |
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