Quartzlock Products


The Quartzlock E8-X is a breakthrough in exceptionally low cost, miniature, traceable, calibration-free, off-air frequency & time standards. These references maintain the high frequency & time accuracy required for demanding applications.


  • Low distortion 10MHz Sine & 1PPS outputs
  • <8x10-13…..5x10-14 accuracy
  • No drift
  • High stability nationally & internationally
  • 1 year warranty
  • Lowest cost available
  • Very long production life & support. Quartzlock's 2A LF tracking RX (E8-X GPS predecessor) series has been in production for >30 years
  • Many versions of the E8-X GPS DO are available. PCB, mil, low and ultra low noise E8-Y.


  • No calibration required
  • Traceable reference


  • Calibration of counters, frequency meters, spectrum & network analysers
  • Synthesizers, & communication analysers
  • Reference for: VHF, UHF & PMR TX, CDMA, Tetra, DTV & DAB
  • Production test frequency standard
  • Network time protocol use in financial, utilities, security & communications timing
  • OEM
  • Standard for calibration labs, radio workshops, labs and stations


  • Quartzlock’s hydrogen maser based laboratory is used in production test & quality assurance to ensure compliance with offset and stability specifications.

Standard Specification:
Output Frequency 10 MHz (up to 100 MHz)
Output Level +10 dBm into 50 Ohms
1 PPS Output 1
Number of Outputs 1 (up to 8 Outputs available)
STS1s 2x10-10
STS10s 4x10-10
STS100s 5x10-11
STS1000s 2x10-11
Phase Noise 1Hz -85 dBc/Hz
Phase Noise 10Hz -100 dBc/Hz
Phase Noise 100Hz -125 dBc/Hz
Phase Noise 1Kz -135 dBc/Hz
Phase Noise 10Kz -145 dBc/Hz
Warm Time 15 min
PSU Nominal 12 V dc
PSU Min 6 V dc
PSU Max 14 V dc
Current 250 mA
Supply DC

Optional Extras

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

Option 46 - Add Standard GPS Antenna & Standard PSU

    Option 47 - Add High Gain GPS Antenna & Standard PSU

      Option 48 - User Specified Low Noise Output

        Images & Information


        Miniature, bench-mount, traceable, calibration-free, GPS disciplined TCXO frequency standard


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