Spectratime GRClok-1500 Rubidium Clock

Spectratime GRClok-1500 Rubidium Clock

The GRClok-1500 is a smart, low cost, compact rubidium oscillator with an optional integrated GPS / GNSS receiver. Get a Quote

GRClok-1500 Oscillator Overview

The GRClok-1500 is a smart, low cost, compact rubidium oscillator with an optional, integrated GPS/GNSS receivers, using u-Blox’s advanced 50-channel LEA-6T, GPS or a 72-channel LEA-M8T GNSS receiver with position engine and anti-jamming technology.

It’s GNSS ready to support multi-navigational satellite system receivers, including GPS, Galileo, GLONASS, IRNSS, and BDS / COMPASS. It is compatible to the Stanford PRS10 model and fits in a compact 1U chassis. The LNRClok uses the patented, adaptive SmarTiming+ technology, disciplining the GPS/GNSS reference at 1ns resolution, providing a host of complex time and frequency features in one package solution, while achieving state-of-the-art performance, reliability and extended lifetime.


  • Mobile & wired telecom/datacom infrastructures
  • Military communications & surveillance systems
  • High precision instruments
  • Time & frequency systems
  • Financial trading systems
  • Big data timing systems
  • Navigational & positioning systems
Key Features:
  • Weight 500 g | 1.1 lbs
  • Size (WxHxL) 128x95x38.1mm | 5.03x3.74x1.5"
  • Accuracy @ shipment typ. < 5x11 at 25c

Support and Documentation

iSync+ Smart GRClok-1500 Spec
pdf (604KB)
iSync+ Smart LNRClok-1500/GRClok-1500 Manual
pdf (2,520KB)

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