What type of signal does VHF Omni-directional Range (VOR) emit?

Answer: B — Radial signals that aircraft can use for navigation

VHF Omni-directional Range (VOR) emits radial signals that aircraft can utilize for navigation. The VOR system provides highly accurate navigational information to pilots, allowing them to determine their position relative to the VOR station and navigate along the radials that are transmitted. Each VOR station emits a signal in all directions (hence "omni-directional"), which helps pilots determine their heading in relation to the station. This system is an essential component of en-route navigation and is widely used by pilots for maintaining their course during flight. The ability to follow these radials ensures safe and efficient navigation, particularly in the vicinity of busy air traffic routes. Understanding how VOR operates and the significance of its radial signals is crucial for any trainee air traffic controller.