Before revision: aircraft are airborne, indicated as 'AIR') The Common Signalling Channel (CSC) is being used for AIR and GND ' VDL Mode 2 ground stations, which are using adjacent channels need to be at least separated 3 Nautical Miles (NM) in order to avoid interference.
After revision: aircraft are airborne, indicated as AIR') The Common Signalling Channel (CSC) is being used for AIR and GND ' VDL Mode 2 ground stations, which are using adjacent channels need to be at least separated 3 Nautical Miles (NM) in order to avoid interference.