The Mini‑PCIexpress LTE‑Lite is a low‑cost 20 MHz GPSDO module providing <10 ns RMS 1 PPS timing accuracy when GPS‑locked. After one week of GPS conditioning, it offers holdover stability better than ±50 µs over three hours at 25°C with no motion or airflow. It outputs 1 PPS via 3.3 V CMOS and through the COM‑port DCD pin for NTP/1588 applications. The module supports NMEA messaging and health reporting through its serial port. Its 65‑channel GPS receiver supports QZSS and SBAS systems including WAAS, EGNOS, and MSAS, with acquisition sensitivity of −148 dBm and tracking sensitivity of −165 dBm. TTFF is under 32 seconds cold and 1 second for warm or hot starts, with ADEV <7E‑11 at 10 seconds and <2E‑12 at 10,000 seconds under GPS lock.

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