Quectel LC29T High-Precision Timing GNSS Module - SATRON electronics
Quectel LC29T
High-Precision Timing GNSS Module
  • 12.2 mm × 16.0 mm × 3.1 mm
  • Approx. 1.1 g
  • GPS, QZSS, GLONASS, BDS, and Galileo
  • Operating temperature of -40°C to +85°C
LC29T is a multi-constellation GNSS module that delivers high-integrity precision timing in demanding applications worldwide. It simultaneously receives and tracks L1 signals from multiple (GPS, GLONASS, Galileo, BDS and QZSS) constellations. Its timing capabilities remain operational even if only one satellite is tracked. LC29T is designed to meet the most stringent timing synchronization requirements within global 4G/5G mobile networks. In addition, the module can generate a 10 MHz square wave for various applications.
By effectively minimizing timing errors of the primary source of cellular network synchronization, it empowers operators to maximize their network performance. Simultaneously the LC29T meets the strict synchronization and timing demands of the next-generation networks across various industry verticals such as 5G O-RAN, smart power grid, data centers, satellite communication system, LoRa base stations, calibration services and industrial automation applications. The module’s multi-constellation capability reduces timing errors to less than 13.6 ns under open-sky conditions. Additionally, it is designed and manufactured in accordance with the stringent Quality Management System, aligning with the IATF 16949:2016 Standard.

Key features

  • Ultra compact size: 12.2 mm × 16.0 mm × 3.1 mm
  • Multi-constellation GNSS engine for GPS, GLONASS, Galileo, BDS and QZSS
  • Integrated AGNSS function
  • Single-satellite timing
  • 10 MHz frequency output
  • Auto position hold
Quectel LC29T (AA) GNSS Module LC29T (AA)
Dimensions 12.2 mm × 16.0 mm × 3.1 mm
Weight Approx. 1.1 g
Temperature Range
Operating Temperature -40 °C to +85 °C
Storage Temperature -40 °C to +90 °C
GNSS Features
Supported Bands GPS: L1 C/A
GLONASS: L1
Galileo: E1
BDS: B1I
QZSS: L1 C/A
Default Constellations GPS + GLONASS + Galileo + BDS + QZSS
Number of Channels 80 Tracking Channels
4 Fast Acquisition Channels
Number of Concurrent GNSS 4 + QZSS
SBAS WAAS, EGNOS, MSAS, and GAGAN
Horizontal Position Accuracy① Autonomous: 1.5 m
Velocity Accuracy② Without Aid: 0.1 m/s
Acceleration Accuracy② Without Aid: 0.1 m/s²
1PPS Timing Accuracy② < 13.6 (±6.8) ns @ 1σ
1PPS Jitter② ±6.5 ns
Frequency Reference③ 10 MHz ±0.05 ppm
TTFF (with AGNSS)③ Warm Start: 5 s
TTFF (without AGNSS)② Cold Start: 35 s
Warm Start: 24 s
Hot Start: 2 s
Sensitivity (@ Default Constellations) ④ Acquisition: -145 dBm
Tracking: -161 dBm
Reacquisition: -153 dBm
Dynamic Performance② Maximum Altitude: 18000 m
Maximum Velocity: 515 m/s
Maximum Acceleration: 4g
Certifications
Regulatory Europe: CE*
Others RoHS
Interface
UART Adjustable: 115200–921600 bps
Default: 115200 bps
Update Rate: 1 Hz (default), up to 10 Hz
Protocol
Protocol NMEA 0183
External Antenna Interface
Antenna Type Active⑤
Antenna Power Supply External or Internal (through VDD_RF)
Electrical Characteristics
Supply Voltage Range 3.0–3.6 V, Typ. 3.3 V
I/O Voltage Following VCC
Power Consumption
(@ Default Constellations, 3.3 V)②
Normal Operation:
222 mA (732.6 mW) @ Acquisition
232 mA (765.6 mW) @ Tracking

Power Saving Mode:
55 μA (181.5 μW) @ Backup mode
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