Aeronautical Mobile Service (AMS) 1
Aeronautical Mobile Service (AMS) 1 : A mobile service between aeronautical stations and aircraft stations, or between aircraft stations, in which survival craft stations may participate; emergency position-indicating radio beacon stations may also participate in this service on designated distress and emergency frequencies. Note: Frequencies allocated by Industry Canada to this service may have the identifier (R) or (OR) to indicate which frequency is to be used: on air route (R) or off-route (OR)