Q. 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
Solution:
  • 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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