SparkPNT GNSS Disciplined Oscillator

Ultra-Precise, Secure, and Atomic-Grade GNSS Disciplined Oscillator

The SparkPNT GNSSDO (Disciplined Oscillator) is a high-performance, multi-constellation timing receiver and disciplined oscillator designed for engineers, researchers, and organizations that rely on extremely stable, traceable time. Built around the Septentrio mosaic-T platform and a SiTime SiT5358 Super-TCXO, it provides robust timing performance without additional services — and unlocks truly atomic-class accuracy when paired with a Fugro AtomiChron® subscription.

Whether you're synchronising quantum systems, securing financial infrastructure, or building precision timing networks, the SparkPNT GNSSDO offers a deployable, rugged, and cost-effective solution that brings atomic-grade performance into the field.

Out of the Box, the SparkPNT GNSSDO provides:

• High-precision GNSS timing (no subscription required)
  Multi-frequency GPS, GLONASS, Galileo, and BeiDou timing with <5 ns time-pulse precision and strong resilience against jamming and spoofing.
• Ultra-stable 10 MHz frequency output
  The onboard SiT5358 Super-TCXO delivers ±50 ppb stability with excellent aging and temperature performance — ideal for labs, networks, and embedded systems.
• Event timestamping <20 ns
  Capture, log, and correlate time-critical events with exceptional precision using the dedicated SMA event input.
• Built-in control and remote access
  An integrated ESP32-WROVER provides a web console, USB-to-Ethernet capability, logging, and configuration without needing a separate microcontroller or host.
• Flexible power and deployment
  USB-C, PoE, or barrel-jack power options plus a rugged aluminium enclosure make it suitable for labs, server rooms, and field installations.
• L-band correction reception hardware included
  The bundled antenna and receiver are ready for encrypted L-band correction services — including AtomiChron — straight out of the box.

What You Unlock with AtomiChron®

A Fugro AtomiChron Timing subscription transforms the GNSSDO into a reference-grade timing source previously accessible only through caesium clocks or hydrogen masers.

• Sub-nanosecond accuracy (<1 ns)
  AtomiChron delivers timing corrections over encrypted L-band, allowing the GNSSDO to achieve <1 ns timing accuracy — suitable for quantum systems, metrology, advanced networks, and financial timestamping requirements.
• Frequency stability approaching hydrogen masers
  Fugro states AtomiChron provides stability levels that surpass high-calibre industrial caesium clocks and approach hydrogen maser performance — without the cost, power, or maintenance of an atomic clock.
• Authenticated, spoof-resistant timing
  Corrections include Navigation Message Authentication (NMA), offering protection against non-genuine GNSS signals — a must for financial, security, and telecom applications.
• No Internet dependency
  All corrections are delivered over encrypted L-band broadcast. Even air-gapped systems can achieve world-class timing accuracy.
• Global coverage and reliability
  A worldwide network of ground stations and multi-continental availability ensures highly reliable correction delivery and traceability.

GNSSDO Use Cases

Quantum & Physics Laboratories

Organizations that rely on highly stable timing for qubit control, synchronisation, and experimental reproducibility.

• Sub-ns timing
• Extremely stable 10 MHz frequency
• Fully traceable global reference

Secure & High-Precision Timekeeping

Companies that use authenticated, ultra-reliable timing for:

• Timestamping and compliance
• Latency-sensitive operations
• Defence against spoofing and timing attacks

Advanced Sensing, Navigation & Instrumentation

• Precision sensors
• Navigation solutions
• Timing distribution in demanding environments

Telecom, Network Ops, and Distributed Systems

Any system requiring synchronised clocks, drift mitigation, or time-critical coordination benefits immediately from GNSSDO performance.

Please Note: The mosaic-T firmware (4.14.4) supports RTCM input for RTK Rover positioning. However, RTCM output is not supported. You cannot use the mosaic-T as an RTK Base. The documentation suggests you can, but you cannot.

SparkPNT GNSSDO

• Quick Start Guide
• Register for Atomichron^® Subscription
• Schematic
• PCB Dimensions
• Case Dimensions
• RTK mosaic-T Product Manual
• Hardware GitHub Repo
• ESP32 Firmware
• Allan Deviation

Septentrio mosaic-T

• Septentrio product page
• Septentrio resources: datasheet, firmware, manual, software tools, USB driver
• mosaic-T Hardware Manual
• mosaic-T Firmware Reference

SiTime SiT5358

• Datasheet

Fugro AtomiChron^®

• Fugro AtomiChron^®
• Mastering time: the challenge of time Synchronisation