that some administrations will be unable to operate MetAids systems in the band 1 668.4-1 675 MHz as a result
of frequency sharing constraints with respect to new aeronautical mobile (ground-to-air) systems being deployed in the
1 670-1 675 MHz band and
ITU-R SA.1166-2-1999 history
1999ITU-R SA.1166-2-1999 Performance and Interference Criteria for Active Spaceborne Sensors