The radio monitoring legends stipulated in this specification cover ultra-shortwave, shortwave and satellite frequency bands, including fixed monitoring stations, mobile monitoring stations and removable monitoring stations, as well as suppression systems and command and control centers. Monitoring, direction finding or positioning are distinguished according to different functions of the monitoring stations. . Based on actual work needs, this specification distinguishes between monitoring and direction finding for fixed monitoring stations and movable monitoring stations in the ultra-shortwave frequency band. By default, direction finding stations have monitoring functions at the same time. This distinction is not made between shortwave and satellite frequency bands. The radio monitoring legends stipulated in this specification also include a total of 20 legends such as command and control center, vehicle-mounted suppression and removable suppression.
T/RAC 017-2019 history
2019T/RAC 017-2019 Graphic symbols specification for radio monitoring