Secure microPNT STL-1000 LEO Receiver Module

Solving the PNT industry's size, weight, and power challenges for alternative, resilient timing solutions

Ultra-small M.2 B-Key LEO/GNSS Receiver with holdover, low power consumption and low phase noise for Positioning, Navigation, and Timing when GNSS is unavailable.
Secure microPNT STL-1000 LEO Receiver Module

The STL-1000 is Software Defined Receiver designed to operate with the Iridium based SecureTime altGNSS LEO services. This module is a derivative of the field-tested STL-2600 and STL-1400 with a modified form-factor in the style of M.2 B-key socket standard.

The Secure µPNT™ STL-1000 is a software defined, STL LEO/GNSS embedded PNT receiver module that complies with the M.2 2242 B-Key form factor that supports Iridium based VIAVI SecureTime altGNSS LEO Services. The module measures 22 mm x 42 mm x 2.3 mm, weighs only 3.6 g (0.2 oz), and uses less than 1.0 watt power, making it the ideal solution for applications that require an extremely small, low-power, secure, resilient embedded PNT receiver.

The STL-1000 features a high-quality MEMS TCXO and VIAVI Solutions' advanced GPSDO disciplining technology, delivering precise timing with holdover capability. This design allows the STL-1000 to operate as a compact GPSDO and is the only STL receiver in the family with this capability.

The module provides 10 MHz, 1 PPS, NMEA-based Position, Navigation, and Timing data, as well as raw satellite observables, and GNSS parameters.

Key Features

  • M.2 B-Key form factor
  • MEMS TCXO providing GPSDO timing and holdover capability
  • STL Receiver to support Iridium PNT based SecureTime Service options
  • 1 PPS Output Accuracy, <65 ns rms to UTC (STL)
  • CMOS 3.3 V 10 MHz and 1 PPS Output signals
  • External 1 PPS Input Signal support for disciplining
  • SCPI and NMEA Serial Interfaces
  • Field Upgradeable Firmware
  • Low Power Operation (typically ≤1.0 W)
  • Compatible with GPSCon and JLTerm control software
Secure microPNT STL-1000 LEO Receiver Module

Compact PNT receiver module is M.2 2242 B-Key form factor compliant.

  • Alternate Timing Options - Secure µPNT™ STL-1000

    The Secure µPNT™ STL-1000 supports SecureTime LEO services to maintain precise timing when GNSS signals are degraded, unavailable, or intentionally denied.

  • SecureTime LEO

    Satellite-based timing service using a global LEO constellation with service availability in enabled regions. This option uses the altGNSS LEO-STL service with an integrated Viavi receiver, supporting indoor and outdoor antennas. The higher signal power from LEO satellites provides jamming resistance and improved availability in indoor environments.

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