Frequency Electronics, Inc., together with its subsidiaries, engages in designing, development, and manufacturing of precision time and frequency control products and components for microwave integrated circuit applications. It operates through two segments: FEI-NY and FEI-Zyfer. The FEI-NY segment offers precision time and frequency control products for communication satellites, terrestrial cellular telephone or other ground-based telecommunication stations; and other components and systems for the U.S. military; and provides design and technical support for satellite business. The FEI-Zyfer segment offers global positioning system technologies to systems and subsystems for secure communications, both government and commercial, and other locator applications; and engages in sale and support of wireline telecommunications products, including US5G. It markets its products directly and through independent sales representative organizations located in the United States, Europe, and Asia. Frequency Electronics, Inc. was founded in 1961 and is headquartered in Mitchel Field, New York.