Ground Data Link Antenna System is used for the data link applications between an airborne platform and ground station. It has Ku bond, C band or S band reflector antenna together with positioner to point the antenna. Via an Ethernet connection it receives the ECEF coordinates of the airborne platform and positions its antenna to correct direction. The positioner is mounted on a tripod or a telescopic mast. The system has its own GPS to find its coordinates. It can find the target by directly pointing to GPS coordinates received or by performing a blind scan. When the target is found it tracks it by using GPS coordinates or by using the RSSI of the signal. Even if the link is broken for a few seconds the system continues to track the target by predicting the aircraft location obtained from the previous coordinates.