The THA-X603A is a four-system full-frequency external handheld antenna covering GPS L1/L2/L5, BDS B1/B2/B3, GLONASS L1/L2/L3, and Galileo E1/E5a/E5b signals. It is widely used in industries such as surveying and mapping, navigation and dispatching. It is particularly suitable for various applications in lightweight drones, including aerial, remote telemetry, disaster monitoring, traffic patrols, and security surveillance.