RADNAV-RH-CHAPTER1-Ground Direction Finder

1. With reference to a VDF bearing, the true bearing of the aircraft from the ground station is a:




2. The range at which you can obtain a VDF bearing can be influenced by:




3. Which of the following statements is true?




4. The phase difference between the reference and variable signals on QDM 050o (VAR 10oW) for a conventional vor is:




5. The VDF class B bearing is accurate to within:




6. Which of the following is an advantage of Ground/DF (VDF) let-down?




7. If, when you are requesting a QDM from an airfield, you are offered a QGH, is means:




8. If a ground D/F controller passes a bearing thus: “your true bearing is 256°, class alpha”. This means:




9. Ground DME responders respond at a frequency:




10. Which of the following does NOT affect the accuracy of VDF bearings:




11. Diffraction of a RF signal is a displacement of its propagation path due to:




12. Which of the following statements is correct in respect of a RF signal:




13. When would VDF be used for a position fix:




14. The approximate ground waves of LF and MF are (by day) ___ and ___ respectively, with ___ suffering more from atmospheric attenuation.




15. Ground direction finding at aerodromes utilises which frequencies?




16. To establish and maintain effective HF communications the frequency used at a given range:




17. What is the “Q” code for a magnetic bearing from a VDF station?




18. VOR operates in the (i), transmitting a bearing signal by means of a (ii) and uses (iii) to determine the radial:




19. A Class B VDF bearing has accuracy limits of plus or minus:




20. Decimetric waves correspond to the frequency range:




21. Which Q code would give a magnetic bearing from a VDF station:




22. The wavelength of a radio signal is 200 metres. What is the frequency?




23. The emission characteristics A3E describe:




24. An aircraft wishing to use the VDF service must:




25. As the frequency of a transmitter is increased, the range of the ground wave will:




26. The gain of an aerial is a measure of its ability to:




27. An aircraft receives a Class A true bearing from a VDF station. This is:




28. Refraction of an electro-magnetic radiation is:




29. Which of the following statements regarding VHF direction finding (VDF) is most accurate?




30. Which of the following is an advantage of VDF?




31. What is QTE?




32. Which Q code would give a magnetic heading to steer (nil wind) to a VDF station:




33. What is the lowest frequency where freedom from static interference can be guaranteed?




34. What equipment does an aircraft need when carrying out a VDF letdown:




35. A class C magnetic bearing is received from a station. This is:




36. According to ICAO Annex 10, in which frequency band(s) does a locator normally transmit?




37. In radio terms, frequency means:




38. When conducting a QGH approach responsibility for interpreting the procedure rests with ___ and on a VDF approach responsibility rests with ___




39. Which of the following affects VDF range?




40. An aeroplane requesting a VDF bearing should:




41. Which Q code would give a true track from a VDF station:




42. When a pilot is conducting a VDF/QGH procedure, he will require:




43. In which one of the following circumstances is ground direction finding (VDF) likely to be used to fix an aircraft’s position?




44. With reference to ground DF, the controller can refuse to give bearings if:




45. A VDF bearing can be obtained:




46. The VHF frequency band has a wavelength limit of:




47. The VDF Homer service provides:




48. What airborne equipment, if any, is required to be fitted in order that a VDF let-down may be flown?




This is more feedback!
This is the feedback!
 Data Base Login Information: Please make
 sure that you enter your name before
 submitting your results.
 My Name
  *Enter your name here




Back to Top