Practice question

Which ground-based navigation aid transmits a non-directional signal in the low-to-medium frequency band, allowing an aircraft's ADF (using its loop antenna) to display a bearing to the station?

  1. Non-Directional Beacon (NDB)
  2. VHF Omnidirectional Range (VOR)
  3. Distance Measuring Equipment (DME)
  4. Tactical Air Navigation (TACAN)

Answer: A — Non-Directional Beacon (NDB)

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