Annex 1 - Fixed system considerations that may facilitate successful coordination    
 1     Antenna considerations    
        1.1     Antenna orientation of existing stations        
        1.2     Orbital avoidance by planned stations         
        1.3    Polarization discrimination  
 2     Receiver/transmitter considerations           
        2.1     Frequency offset    
        2.2     Additional allowance for interference          
        2.3     Modulation and bandwidth considerations  
Annex 2 - Sharing of frequency bands in the 1-3 GHz range between  transmitting stations in the FS and GSO space stations  operating in the mobile-satellite (Earth-to-space) service