For their own protection, highly sensitive radio-relay receivers operating in frequency
bands between 1 and 15 GHz shared with space radiocommunication services (space-to-Earth)
should avoid directing their antennas towards the geostationary-satellite o
ITU-R SF.765-1-2002 history
2002ITU-R SF.765-1-2002 Intersection of radio-relay antenna beams with orbits used by space stations in the fixed-satellite service