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Which of the following can be expected to reduce the range at which an aircraft can receive VHF transmissions from a ground station?
  • A
    Building-construction work close to the transmitter.
  • B
    A forecast temperature inversion above the level at which the aircraft is flying.
  • C
    A change of frequency to one at the lower end of the VHF band.
  • D
    The receiving aircraft enters a climb.

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