As the pioneering developer and manufacturer of GPS time and frequency systems, FEI-Zyfer offers both commercial-off-the-shelf (COTS) and custom designs to meet our customer requirements for precise time and frequency references. Our engineering expertise in both oscillator and system design ensures that our customers are provided with the most reliable and accurate systems available.

SAASM MPE-S GB-GRAM, SAASM Force 22E MRU, or C/A GPS-referenced designs, Rubidium or OCXO oscillators, and a multitude of time and frequency option modules. If a custom solution is required, we have a proven record of delivering quality solutions quickly for both military and commercial customers.



– Quartz Crystal Oscillators

– Triple-redundant master oscillator,

– G-Compensated quartz oscillator integrated with rubidium atomic standard

– G-Compensated quartz oscillator integrated with GPS and rubidium atomic standard

– “Soft” mounted stand-alone g-compensate oscillator

– Hard mounted stand-alone g-compensated multiple-output frequency generator unit

– Hard mounted stand-alone g-compensated oscillators