Frequency Electronics Inc.

ONE COMPANY · MULTIPLE DIVISIONS

Specialized divisions, one mission.

FEI operates through focused divisions, each bringing deep domain expertise across precision timing, quantum, and RF and microwave systems — from New York to Colorado to New Jersey.

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STRUCTURE

Focused teams, shared standards.

Each division concentrates on a distinct set of technologies and markets, while sharing FEI’s engineering rigor, quality systems, and commitment to mission-critical reliability.

OPERATING COMPANIES

Meet the divisions.

Frequency Electronics — New York Headquarters

Uniondale, New York

Frequency Electronics — New York Headquarters

Precision Timing, Atomic Frequency Standards, and Space Technologies for Mission-Critical Applications

Located in Uniondale, New York, Frequency Electronics’ corporate headquarters serves as the company’s primary center for precision timing, frequency control, atomic clock technologies, and space-qualified electronic systems.

Founded in 1961, the New York facility has been at the heart of Frequency Electronics’ engineering, manufacturing, testing, and product development activities for more than six decades. The site is home to many of the technologies that have established the company’s reputation for precision, reliability, and long-term performance across aerospace, defense, communications, navigation, and space applications.

The facility combines advanced engineering with vertically integrated manufacturing capabilities that include quartz resonator fabrication, atomic frequency standard production, frequency generation systems, environmental qualification, and high-reliability electronics manufacturing. This unique combination enables Frequency Electronics to maintain exceptional control over performance, quality, traceability, and mission assurance.

The New York headquarters serves as the foundation of Frequency Electronics’ vertically integrated technology portfolio, supporting commercial, scientific, defense, and national security programs that depend on precise timing, synchronization, and frequency control in mission-critical environments.

Core Competencies

  • Atomic clocks and frequency standards
  • Precision timing and synchronization systems
  • Quartz resonator fabrication
  • Frequency generation and distribution systems
  • Space-qualified electronics
  • Satellite payload timing technologies
  • Precision oscillators
  • Navigation and timing architectures
  • High-reliability aerospace and defense electronics
  • Environmental testing and qualification
FEI-Zyfer

7321 Lincoln Way, Garden Grove, CA 92841-1428

FEI-Zyfer

Assured Positioning, Navigation and Timing (A-PNT) Systems

FEI-Zyfer specializes in Assured Positioning, Navigation and Timing (A-PNT) systems for defense, government, and critical infrastructure applications.

For more than three decades, the company has designed and manufactured high-precision GPS/GNSS-disciplined timing and frequency reference systems used across ground, maritime, airborne, and mobile platforms. Its solutions support mission-critical applications including military communications, intelligence collection, radar systems, tactical data links, secure communications, and resilient navigation networks.

As an approved U.S. Space Force Host Application Equipment (HAE) integrator, FEI-Zyfer combines advanced GPS technologies, military-grade receivers, atomic clocks, and precision oscillators to deliver highly reliable timing and synchronization solutions for demanding operational environments.

Today, FEI-Zyfer is recognized as a leader in resilient Positioning, Navigation and Timing (PNT) systems, helping customers maintain accurate timing and synchronization in contested, degraded, and GPS-challenged environments.

Core Competencies

  • Assured Positioning, Navigation and Timing (A-PNT)
  • GPS/GNSS-disciplined timing and frequency references
  • Military-grade GPS receivers
  • Atomic clocks and precision oscillators
  • Resilient PNT for GPS-denied environments
  • U.S. Space Force HAE integration
Frequency Electronics — Colorado Facility

Boulder, Colorado

Frequency Electronics — Colorado Facility

Quantum Solutions & Time and Frequency Engineering

Frequency Electronics’ Boulder, CO facility specializes in advanced development of quantum sensing & ecosystem solutions, electronic warfare systems, surveillance innovation, and time & frequency products. Our mission is to identify and field revolutionary technologies that enable next-generation capabilities.

Core competencies include ultra-low-noise synthesis, high speed, low noise digital design and firmware development, ultra-low noise receiver technology, ultra-low-noise reference oscillators, rubidium atomic physics, nitrogen vacancies in diamond (NVD) atomic physics, SOSA aligned/compliant engineering for quantum sensors and atomic clocks, phase and amplitude noise metrology.

Core Competencies

  • Ultra-low-noise synthesis
  • High-speed, low-noise digital design and firmware development
  • Ultra-low-noise receiver technology
  • Ultra-low-noise reference oscillators
  • Rubidium atomic physics
  • Nitrogen-vacancy-in-diamond (NVD) atomic physics
  • SOSA-aligned engineering for quantum sensors and atomic clocks
  • Phase and amplitude noise metrology
Frequency Electronics — New Jersey Facility

Northvale, New Jersey

Frequency Electronics — New Jersey Facility

Advanced RF, Microwave, Electronic Warfare, and Spectrum Technologies for Aerospace and Defense

For decades, the Northvale facility has delivered advanced RF and microwave solutions supporting U.S. defense, intelligence, and aerospace programs. The facility develops RF technologies supporting SIGINT, COMINT, and ELINT applications. Leveraging Frequency Electronics’ leadership in precision timing and frequency control, the facility develops RF solutions requiring exceptional spectral purity, frequency stability, and mission-critical reliability.

Core Competencies

  • RF and microwave frequency generation
  • Low phase noise synthesizers
  • Frequency synthesis and conversion
  • Electronic Warfare (EW) technologies
  • RF technologies supporting SIGINT, COMINT, and ELINT applications
  • RF signal processing and DSP
  • Radar and spectrum operations
  • Integrated RF subsystems
  • High-dynamic-range receiver architectures
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Talk to a precision timing engineer.

Whether you need rubidium atomic frequency standards, GPS payload timing, or assured PNT, our team supports programs from prototype through full-rate production.

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