Spectrum sharing between AMSS(R) and MSS

Generic satellite systems will serve aeronautical, land, and maritime users in the US and Canada. One important service, the Aeronautical Mobile Satellite (Route) Service (AMS(R)S), pertains to the safety and regularity of flight. The North American systems are designed to assure that this vital safety service is not impaired in any way as it shares the spectrum and satellites with a large number and great variety of other users in other services. Two of the topics discussed are AMS(R)S requirements and AMS(R)S operation through American Mobile Satellite Corporation (AMSC) Satellites.