19 / 20
What can be obtained on the NAV receiver by selecting one VHF frequency, in the range of 108 to 112 MHz?
  • A
    Rho-theta information from an en-route VOR/DME station can be obtained.
  • B
    Rho-theta information from a terminal VOR/DME can be obtained.
  • C
    Theta-theta information from en-route VORs can be obtained.
  • D
    Rho-rho information from an ILS/DME can be obtained.

The band 108 – 112 MHz is used by ILS Localizer and VOR, on different channels, while the band 112 – 118 MHz is used only by VOR. Within the band 108 – 112 MHz, all channels on even multiples of 100 kHz (108.20, 108.40, etc) are used for VOR. Normally channels spaced 100 kHz are used, however, in congested areas also the intermediate channels (50 kHz) may be used. The VOR channels in this sub-band are usually used for terminal VOR, with short range. Within the 112 – 118 MHz portion of the band all channels (100 and 50 kHz) are available for VOR services.

With regards to this question, it is important to establish the meaning of Rho and Theta. Rho represents Range (distance) and Theta represents Track (bearing).

  • Rho-Rho could be DME/DME.
  • Theta-Theta could represent VOR/NDB.
  • Rho-Theta means VOR/DME or ILS/DME.

Your Notes (not visible to others)



This question has appeared on the real examination, you can find the related countries below.

  • Spain
    5
  • France
    3
  • Germany
    2
  • United Kingdom
    2
  • Austro Control
    1
  • Belgium
    1
Keyboard Shortcut Use Keyboard Shortcuts