WRC-2000 adopted operational epfd limits to protect GSO FSS links from suffering loss of
synchronization or degraded performance due to non-GSO systems and to protect GSO FSS
systems employing adaptive coding in 30/20 GHz bands.
ITU-R S.1554-2002 history
2002ITU-R S.1554-2002 Methodology for determining the overall accuracy of epfd downlink measurements