Frequency Electronics, Inc. engages in the design, development, and manufacture of precision time and frequency generation technology. It operates through the FEI-NY and FEI-Zyfer segment. Read More The FEI-NY segment provides precision time, frequency generation and synchronization products and subsystems that are found on-board satellites, in ground-based communication stations, and imbedded in moving platforms. The FEI-Zyfer segment designs, develops, and manufactures products for precision time and frequency generation and synchronization, primarily incorporating GPS technology. The company was founded by Martin B. Bloch on August 25, 1961 and is headquartered in Mitchel Field, NY.