Quartzlock Products


The Quartzlock E10-P Portable Rubidium Frequency Reference, is a miniature rechargeable Atomic Clock with 10MHz sine-wave 50 Ohm output.

Recharging / operating from internal 12Vdc, this miniature enclosure, only 103 x 55 x 122mm has all the performance needed for on-site calibrations, referencing and portable transfer standard applications. Quartzlock's SMAC (sub miniature atomic clock) technology far outperforms chip scale atomic clock devices with poor AVAR & phase noise.

The E10-P benefits from simple operation just connect output BNC connector to device under reference.

Operation to warmup (5min) from 12V car supply, in transit to on-site application, saves the higher power warm stage.

The E10-P is hand held, with <500g mass, and is one of the smallest & lightest atomic clocks with -95dBc/Hz Phase Noise and 8 x 10-12/100s Stability. (100 x better than any OCXO). E10-Y8 including Option '75' is an alternative ultra low noise portable Rubidium Standard available in signle or multiple outputs. 

The power consumption is 6W at 12V dc / 500mA after 3min warm time.

No antenna is required or view of sky as the E10-P is a completely independent atomic reference.

Applications include: remote site cellular BTS transmitter and satellite communications ground station frequency referencing for calibration. Field service, low noise (remote from supply line hum & noise) development and short production test use. Noise elimination in referencing for signal sources, spectrum analysers, network analysers, subject to lab noise problems.



  • No drift
  • High stability
  • Compact light weight design
  • 10 hours battery life @ +20°C
  • Stability 8 x 10-11/s


  • Frequency calibration
  • Telecom network synchronisation
  • Broadcast
  • Aviation
  • Nautical
  • Precision test and measurement enviroments
  • Cellular wireless base stations


  • Cost effective
  • High performance reference
  • Precise Frequency Reference
  • SMAC technology

Standard Specification:
Output Frequency 10 MHz
Output Level +10 dBm +/-3dBm into 50 Ohms
STS1s 8x10-11
STS10s 3x10-11
STS100s 8x10-12
Aging 1 Day 5x10-12
Aging 1 Month 5x10-11
Phase Noise 10Hz -95 dBc/Hz
Phase Noise 100Hz -125 dBc/Hz
Phase Noise 1Kz -135 dBc/Hz
Harmonics dBc -40 dBc
Warm Time 5 min @ +25C
Retrace 2x10-11
PSU Nominal 12 V dc
PSU Min 12 V dc
PSU Max 15 V dc
Current 1.5 A
OT Min -20 C
OT Max +50 C
ST Min -55 C
ST Max +85 C

Optional Extras

Below you can choose from a range of optional extras to ensure the closest match to your requirements.

Images & Information


The E10-P is a low cost, compact portable rubidium frequency reference capable of operating from external DC or internal batteries. With Quartzlocks SMAC rubidium oscillator at the heart of this instrument it provides the user with a precise frequency reference whereever required, capable of operating for hours with its internal batteries it makes an ideal reference for field service engineers for remote cellular base stations.


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