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Antenna & Wave PropagationSpace-Wave Propagation

Line-of-sight or space-wave propagation is especially important at?

  • AVHF and higher frequencies
  • BOnly very low frequency
  • CDC
  • DAudio frequency
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Correct Answer: A. VHF and higher frequencies
Explanation: At VHF, UHF and microwave frequencies, propagation is predominantly line-of-sight or space-wave because ionospheric return is generally not the normal mode.
Reference: Standard antenna and wave propagation: space-wave propagation
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