Terms of Reference for Working Party 5B Correspondence Group on revision of Recommendations ITU-R M.493 and ITU-R M.541 Terms of Reference for Working Party 5B Correspondence Group on WRC-23 agenda item 1.8 Liaison statement to ICAO (copy to Working Party 4A for information) - Clarification on the draft ICAO position on WRC-23 agenda items 1.15, 1.16 and 1.17 Liaison statement to ICAO - WRC-23 agenda item 1.7 - Questions on a space-based aeronautical VHF communications system in 117.975-137 MHz frequency band Initial reply to ICAO liaison statement - WRC-23 agenda item 1.8 Liaison statement to ICAO - UAS CNPC links in the band 5 030-5 091 MHz Liaison statement to International Association of Marine Aids to Navigation and Lighthouse Authorities on the revision of Recommendation ITU-R M.1371-5 - Technical characteristics for an automatic identification system using time division multiple access in the VHF maritime mobile frequency band Liaison statement to International Maritime Organization, International Association of Marine Aids to Navigation and Lighthouse Authorities and Comité International Radio-Maritime on the revision of Recommendation ITU-R M.1371-5 List of output (TEMP) documents (Documents 5B/TEMP/35 - 5B/TEMP/91(Rev.1)) List of documents issued (Documents 5B/93 - 5B/223) Report on the twenty-fifth meeting of Working Party 5B (e-Meeting, 9-20 November 2020)