TCI International, Inc. leverages 50+ years’ experience to provide innovative solutions meeting the most challenging COMINT & DF requirements. Our solutions are field-proven, mission-ready and user-friendly to meet evolving threat scenarios using the most recent digital direction finding and signal analysis technologies available. TCI’s proprietary DF First® technology provides accurate Angle of Arrival (AOA) direction finding, Time Difference of Arrival (TDOA) geolocation, and Hybrid AOA/TDOA geolocation for all signals of interest. TCI maintains research, development, integration and test facilities in Fremont, California, and provides installation, training and support services for more than 100 countries. TCI is a wholly-owned subsidiary of SPX Corporation (NYSE:SPXC).