FEI-NY
High-stability rubidium frequency references — from space-qualified RAFS at the heart of GPS III to dual/triple-redundant clock payloads and next-generation optical clocks under DoD development. US-engineered and mission-proven since 1961.
60+
Years of Heritage
500+
Satellites Served
8E-13 @ 1 second
Allan Deviation
GPS III
Key Program
60+
Years of Heritage
500+
Satellites Served
8E-13 @ 1 second
Allan Deviation
GPS III
Key Program
Product Families
01Space-qualified rubidium atomic frequency standards (RAFS) with sub-nanosecond stability. Heritage on GPS III and LEO constellations.
02Fault-tolerant digital rubidium standard for mission-critical satellite payloads requiring continuous uninterrupted operation.
03Next-generation trapped-ion clock development programs for quantum-enabled precision timing at unprecedented accuracy.
Technical Resources
Open the approved FEI product literature currently available for this product family.
Product datasheet for the compact TURbO timing unit rubidium oscillator.
Open PDFProduct datasheet for the FE-5668B disciplined rubidium oscillator.
Open PDFProduct datasheet for the FE-5669 very-high-performance digital rubidium oscillator.
Open PDFProduct datasheet for the FE-5667B self-calibrating high-performance rubidium oscillator.
Open PDFProduct datasheet for the compact TURbO RCS rubidium clock system.
Open PDFWhere It's Used
Long-term holdover enables precise navigation and mission continuity when GPS or GNSS signals are unavailable, jammed, or intentionally denied.
Ultra-stable timing references for submarines and autonomous underwater systems operating for extended periods without access to satellite synchronization.
Autonomous frequency and timing references for spacecraft, lunar missions, and deep-space exploration where external timing signals are unavailable.
Provides synchronized timing for distributed sensors, communications, radar, and electronic warfare systems operating in contested environments.
Primary timing references for resilient telecommunications infrastructure requiring long-term synchronization and minimal frequency drift.
High-precision frequency standards for national laboratories, calibration facilities, and advanced scientific research requiring exceptional stability.
Reliable autonomous timing for classified communications, command-and-control networks, and other mission-critical government applications.
Maintains ultra-precise timing for weeks or months without external synchronization, ensuring mission continuity in isolated or GPS-denied environments.
About the Manufacturer
Precision atomic timekeeping for space and defense — the technology at the heart of GPS III.
FEI's core division in Uniondale, New York has designed and manufactured frequency standards since 1961. With heritage on GPS III and hundreds of satellite missions, FEI-NY products represent over six decades of continuous advancement in precision frequency technology for space, defense, and national infrastructure.
Also From FEI
FEI engineers are available to consult on custom configurations, integration requirements, and qualification testing for your specific application.
