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Antenna & Wave PropagationSky-Wave Propagation

Sky-wave propagation relies mainly on refraction/return of radio waves by the?

  • AIonosphere
  • BTropospheric ground surface only
  • COcean floor
  • DTransmission-line dielectric
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Correct Answer: A. Ionosphere
Explanation: In sky-wave communication, ionized atmospheric layers can bend suitable radio waves back toward Earth.
Reference: Standard antenna and wave propagation: sky-wave propagation
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