Subelement K: K – Aircraft— Topic 69: VHF Omnidirectional Range (VOR)
Question 3-69K3
Element 3 (GROL)What is the frequency range of the ground-based Very-high-frequency Omnidirectional Range (VOR) stations used for aircraft navigation?
Explanation
Very-high-frequency Omnidirectional Range (VOR) stations, as their name suggests, operate in the Very-high-frequency (VHF) portion of the radio spectrum. The VHF band is generally defined as 30 to 300 MHz.
The correct frequency range for VOR stations used in aircraft navigation is from 108.00 MHz to 117.95 MHz. This range falls squarely within the VHF band and is specifically allocated internationally for aeronautical navigation services.
Options A and C are incorrect because they list frequencies in kilohertz (kHz). Kilohertz frequencies fall into the Medium Frequency (MF) or High Frequency (HF) bands, not the Very-high-frequency (VHF) band. Option B lists frequencies in MHz, but these are in the Ultra-High Frequency (UHF) band and are primarily used by other navigation systems like the Instrument Landing System (ILS) Glide Slope, not VOR.
Related Questions
3-69K1 All directions associated with a VOR station are related to:3-69K2 The rate that the transmitted VOR variable signal rotates is equivalent to how many revolutions per second?3-69K4 Lines drawn from the VOR station in a particular magnetic direction are:3-69K5 The amplitude modulated variable phase signal and the frequency modulated reference phase signal of a Very-high-frequency Omnidirectional Range (VOR) station used for aircraft navigation are synchronized so that both signals are in phase with each other at ____________ of the VOR station.3-69K6 What is the main underlying operating principle of the Very-high-frequency Omnidirectional Range (VOR) aircraft navigational system?