BAE Systems Tests ‘SABER’ Tech for Next-Gen U.S.A.F. Electronic Warfare Aircraft Our Bureau 563 BAE Systems said it has flight tested its Small Adaptive Bank of Electronic Resources (SABER) technology, paving the way for a critical software upgrade to the EC-37B Compass Call, a next-generation electronic warfare aircraft. Teams from both BAE Systems and the U.S. Air Force conducted tests on 11 flights of an EC-130H from Davis Monthan Air Force Base in Arizona. The SABER system is a major technological advance – transitioning from hardware to software-based electromagnetic spectrum (EMS) warfare capability for the U.S. Air Force and its Compass Call weapon system. The system is built on a suite of software defined radios using an open system architecture and will provide the backbone of the EC-37B’s operating system.