Originally Posted by
HEATHROW DIRECTOR
JAnd what on earth is a "non-directional localiser"
What do you mean "what on earth"? Newer modern locs are highly directional, transmitting in one direction. The localiser we have here on Runway 36 at Winnipeg does not allow for a back-course approach for runway 18 (as 18 doesn't have a localiser). Now I'm no techie, but the way I understand it they reduce carrier power needs and channel frequency protection requirements.