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Subelement K
Aircraft
Section 68
Distance Measuring Equipment
What is the frequency range of the Distance Measuring Equipment (DME) used to indicate an aircraft’s slant range distance to a selected ground-based navigation station?
  • 108.00 MHz to 117.95 MHz.
  • 108.10 MHz to 111.95 MHz.
  • Correct Answer
    962 MHz to 1213 MHz.
  • 329.15 MHz to 335.00 MHz.
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The Distance Measuring Equipment (DME) measures the distance from the aircraft to the DME ground station. This is referred to as:
  • DME bearing.
  • Correct Answer
    The slant range.
  • Glide Slope angle of approach.
  • Localizer course width.
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The Distance Measuring Equipment (DME) ground station has a built-in delay between reception of an interrogation and transmission of the reply to allow:
  • Someone to answer the call.
  • The VOR to make a mechanical hook-up.
  • Correct Answer
    Operation at close range.
  • Clear other traffic for a reply.
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What is the main underlying operating principle of an aircraft’s Distance Measuring Equipment (DME)?
  • Correct Answer
    A measurable amount of time is required to send and receive a radio signal through the Earth’s atmosphere.
  • The difference between the peak values of two DC voltages may be used to determine an aircraft’s distance to another aircraft.
  • A measurable frequency compression of an AC signal may be used to determine an aircraft’s altitude above the earth.
  • A phase inversion between two AC voltages may be used to determine an aircraft’s distance to the exit ramp of an airport’s runway.
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What radio navigation aid determines the distance from an aircraft to a selected VORTAC station by measuring the length of time the radio signal takes to travel to and from the station?
  • RADAR.
  • Loran C.
  • Distance Marking (DM).
  • Correct Answer
    Distance Measuring Equipment (DME).
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The majority of airborne Distance Measuring Equipment systems automatically tune their transmitter and receiver frequencies to the paired __ / __ channel.
  • VOR/marker beacon.
  • Correct Answer
    VOR/LOC.
  • Marker beacon/glideslope.
  • LOC/glideslope.
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