[9D/30,9D-10-11S/4] Working Doc.for prop.to mod.Rec.ITU-R F.1338-Threshold lev.to determ.the need to coord.between syst.in the broadcast.-sat.serv.(sound) in the geost.-sat.orbit for space-to-Earth transm.& the fixed serv.in the band 1452-1492MHz (Q.111/9)