MH/T 4028.1-2021 Configuration of ground-to-air communications equipment for civil aviation air traffic control services Part 1: Voice communications (English Version)
2021MH/T 4028.1-2021 Configuration of ground-to-air communications equipment for civil aviation air traffic control services Part 1: Voice communications
2010MH/T 4028.1-2010 Configuration of communication equipments for civil aviation air traffic control service- Part 1: Voice communication