Tech Resources Inc (TRI) develops electronic test equipment and services to USAF, USN and Foreign Military branches. The company is focused on the development and manufacturing of sophisticated RF, "O"-level electronic support equipment for testing SATCOM and Electronic Warfare systems. In addition, the company has developed test systems and equipment such as tailored radio frequency antenna couplers, test sets, and accessories. Individual antenna couplers provide RF coupling between the aircraft installed RF system and a test set.