Quectel LC99T High-Precision Timing GNSS Module - SATRON electronics
Quectel LC99T
High-Precision Timing GNSS Module
  • Dual-band high-precision timing GNSS module
  • 22.4 mm × 17.0 mm × 3.3 mm
  • 2 g
  • GPS, GLONASS, Galileo, BDS, QZSS and NavIC
  • Operating temperature of -40°C to +85°C
Quectel LC99T is a dual-band high-precision timing GNSS module, which can concurrently track GPS, GLONASS, Galileo, BDS, QZSS and NavIC satellite signals. It also supports SBAS (including WAAS, EGNOS, MSAS and GAGAN) and AGNSS functionality. In contrast to single-band GNSS modules, it tracks a substantially greater number of visible satellites, enhancing overall signal reception. With nanosecond timing accuracy, the module is particularly well suited for infrastructure applications with precise timing requirements. LC99T 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, LC99T meets the strict synchronization demands of the next-generation networks across various vertical industries such as 5G X-Haul, smart grid, data centers, satellite communications, calibration services, and industrial automation applications. The module’s multi-band 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

  • Multi-GNSS engine for GPS, GLONASS, Galileo, BDS, QZSS and NavIC
  • Ideal for dense urban canyons and multi-path environments
  • AGNSS
  • Optimized accuracy and availability with survey-in (auto position hold) and single-satellite timing
  • L1 + L5 bands
  • PPS, synchronized to GNSS/UTC within 13.6 ns (1 sigma)
  • 10 MHz frequency output
Quectel LC99T (IA) LC99T (IA)
Dimensions 22.4 mm × 17.0 mm × 3.3 mm
Weight Approx. 2.0 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; L5
GLONASS: L1
Galileo: E1; E5a
BDS: B1I; B1C; B2a
QZSS: L1 C/A; L5
NavIC: L5
Default Constellations GPS + GLONASS + Galileo + BDS + QZSS + NavIC
Number of Channels 80 Tracking Channels
4 Fast Acquisition Channels
Number of Concurrent GNSS constellations 5 + QZSS
SBAS WAAS, EGNOS, MSAS and GAGAN
Horizontal Position Accuracy① Autonomous: 1.0 m
Velocity Accuracy② Without Aid: 0.1 m/s
Acceleration Accuracy② Without Aid: 0.1 m/s²
1PPS Timing Accuracy② < 13.6 ns @ 1σ
1PPS Jitter② ±6.5 ns
Frequency Reference② 10 MHz ±0.05 ppm
TTFF (with AGNSS)③ Warm Start: 5 s
TTFF (without AGNSS)② Cold Start: 35 s
Warm Start: 28 s
Hot Start: 2 s
Sensitivity (@ Default Constellations)④ Acquisition: -145 dBm
Tracking: -160 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: 460800 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 through VDD_RF pin
Electrical Characteristics
Supply Voltage Range 3.0–3.6 V, Typ. 3.3 V
I/O Voltage Following VCC
Current Consumption (@ Default Constellations, 3.3 V)② Normal Operation:
290 mA (957 mW) @ Acquisition
285 mA (940.5 mW) @ Tracking
Power Saving Mode:
55 μA (181.5 μW) @ Backup mode
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