1. 
   Localizer
   In aviation, a localizer (LLZ) is one of the components of an Instrument Landing System (ILS), and it provides runway centerline guidance to aircraft. In some cases, a course projected by localizer is at an angle to the runway (usually due to obstructions around the airport). It is then called a Lo...
   Found op http://en.wikipedia.org/wiki/Localizer
   
   
2. 
   Localizer
   A localizer is a form of radio beacon used in instrument landing systems for aircraft. It is located about 230 metres beyond the stop end of an airfield runway and radiates two signals of different frequencies from two aerials whose polar diagrams overlap in such a way that their signals are of equa...
   Found op http://www.probertencyclopaedia.com/browse/GL.HTM
   
   

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