Home | Products | Frequency References

Frequency References

Network Time Servers

The world runs on Symmetricom time

Atomic physics sets the standard for stability and accuracy in precision frequency reference packages worldwide. Hydrogen, cesium and rubidium standards, and quartz oscillators have supported more military communications, satellite ground stations, and test & measurement applications than any other precision frequency references in the world. Advanced research, cutting edge electronics engineering, superior manufacturing, and integrated software design have resulted in precision frequency standards that deliver exceptional performance and unsurpassed accuracy, stability and reliability in the most challenging of environments.

Cesium Frequency Standard
Accuracy, stability, and reliability of cesium time keeping standards meet the needs metrology labs, mobile satellite communications, and national timekeeping standards laboratories.
See all Cesium Frequency Standard
Rubidium Frequency Standard
Our Rubidium Frequency units deliver stable and accurate frequency reference signals used in precision test and measurement applications, telecommunications, tactical, shipboard and airborne environments where advanced communications, navigation and targeting systems requiring a stable reference that can function in demanding conditions.
See all Rubidium Frequency Standard
Quartz Frequency Reference
Our quartz crystal oscillators exhibit unusually high spectral purity at frequencies close to the carrier frequency, which makes it ideal for use in a wide variety of applications with stringent requirements for precision time and frequency in radar systems, missile range timing systems, deep space communications, satellite command terminals, GPS monitoring stations, calibration labs and test equipment.
See all Quartz Frequency Reference
Active Hydrogen Maser
The only Active Hydrogen Maser commercially available in the US delivers exceptional long-term stability and is currently used as an atomic frequency standard to set the international time scale.
See all Active Hydrogen Maser
High Reliability/Ruggedized Sources
Ruggedized cesium frequency and time standards are designed for extreme, stand-alone dependability and reliability in adverse operating conditions in telecommunications timing, calibration and metrology laboratories, satellite tracking stations and spaced based master time standards.
See all High Reliability/Ruggedized Sources