The PARC (Polarimetric Active Radar Calibrator) system is an antenna used by the National Commission of Space Activities (CONAE) for the calibration of the radar antenna of the Argentinean SAOCOM satellite constellation. This critical system for SAOCOM missions was not working properly due to the obsolescence of its control software. To remedy this situation, it was necessary to develop a new software to restore the operability of the antenna. In this way, the accurate and reliable operation of a critical system for the calibration of the satellites was guaranteed, ensuring the efficiency and success of the SAOCOM mission.