U.S. Study Group 7 (Science Services)The International Telecommunication Advisory Committee - Radiocommunication sector (ITAC-R) US ​​​preparatory group for science service issues in the International Telecommunication Union - Radiocommunication sector (ITU-R) Study Group 7. "Science services" refer to the standard frequency and time signal, space research, space operation, Earth exploration-satellite, meteorological satellite​​(MetSat), meteorological aids (MetAids) and radio astronom