Quectel LC79H Ultracompact Dual-Band Multi-Constellation GNSS Module - SATRON electronics
Quectel LC79H
Dual-band GNSS Module
  • Dual-band GNSS module with optional RTK
  • 10.1mm × 9.7mm × 2.4mm
  • 0.5g
  • GPS, GLONASS, BDS, Galileo and QZSS
  • Operating temperature of -40°C to +85°C
The LC79H is a series of concurrent multi-constellation GNSS modules. LC79H (AL) is a dual-band GNSS module supporting reception of GPS, GLONASS, Galileo, BDS, NavIC and QZSS signals. LC79H (EL) provides enhanced capability by utilizing dual-band positioning combined with RTK technology, delivering centimeter- and decimeter-level high-precision positioning. With the integrated AGNSS function and the ability to receive SBAS broadcast signals, the LC79H series provides users with a fast, accurate, and high-performance positioning experience.
Compared to single constellation GPS receivers, by enabling multiple GNSS constellations, the LC79H series increases the number of visible satellites and improves the positioning reliability, in particular in dense urban environments. As a dual-band, multi-constellation GNSS module, the LC79H series tracks a higher number of satellites on dual frequencies, thereby significantly reducing the multipath effect caused by high-rise buildings in urban areas, reducing signal acquisition time and improving positioning accuracy. Embedded LNA and SAW filters serve to ensure better positioning in challenging signal conditions.
The advanced low-power management solution enables low-power GNSS sensing and positioning and makes the module an ideal solution for power-sensitive and battery-powered systems. With the low power consumption and high precision, the LC79H series is a popular choice for real-time tracking systems, ideal for sharing economy applications, and its superior performance makes it ideal for vehicle, personnel and asset tracking.

Key features

  • Multi-GNSS engine for GPS, GLONASS, BDS, Galileo, and QZSS
  • Dual-band (L1 + L5)
  • Integrated LNA for high sensitivity
  • Support fast convergence dual-band RTK technology (optional)
  • Integrated SAW filter for noise cancellation
  • Supports EPO, EASY and LOCUS functions
  • UART and I2C
Quectel LC79H Series LC79H (AL) LC79H (EL)
Region Global Global
Dimensions 10.1 mm × 9.7 mm × 2.4 mm 10.1 mm × 9.7 mm × 2.4 mm
Weight Approx. 0.5 g Approx. 0.5 g
Temperature Range
Operating Temperature -40 °C to +85 °C -40 °C to +85 °C
Storage Temperature -40 °C to +95 °C -40 °C to +95 °C
GNSS Features
Supported Bands GPS/QZSS: L1 C/A, L5
GLONASS: L1
Galileo: E1, E5a
BDS: B1I, B2a
NavIC: L5
GPS/QZSS: L1 C/A, L5
GLONASS: L1
Galileo: E1, E5a
BDS: B1I, B2a
NavIC: L5
Default Constellations GPS + GLONASS + Galileo + BDS + QZSS GPS + GLONASS + Galileo + BDS + QZSS
Number of Tracking Channels 135 135
SBAS WAAS, EGNOS, MSAS and GAGAN WAAS, EGNOS, MSAS and GAGAN
Function
Function - RTK
Horizontal Position Accuracy Autonomous①: 1 m Autonomous①: 1 m
RTK②: 1 cm + 1 ppm
Vertical Position Accuracy Autonomous①: 2 m Autonomous①: 2 m
RTK②: 2.5 cm + 1 ppm
Velocity Accuracy③ 0.03 m/s 0.03 m/s
Accuracy of 1PPS Signal (RMS)③ 20 ns 20 ns
RTK Convergence Time - RTK②: < 10 s
TTFF (with AGNSS)④ Cold Start: 12 s
Warm Start: 2 s
Hot Start: 1 s
Cold Start: 12 s
Warm Start: 2 s
Hot Start: 1 s
TTFF (without AGNSS)③ Cold Start: 26 s
Warm Start: 18 s
Hot Start: 1 s
Cold Start: 26 s
Warm Start: 18 s
Hot Start: 1 s
Sensitivity (@ Default Constellations)③ Acquisition: -148 dBm
Tracking: -166 dBm
Reacquisition: -159 dBm
Acquisition: -148 dBm
Tracking: -165 dBm
Reacquisition: -158 dBm
Dynamic Performance③ Maximum Altitude: 10000 m
Maximum Velocity: 500 m/s
Maximum Acceleration: 4g
Maximum Altitude: 10000 m
Maximum Velocity: 500 m/s
Maximum Acceleration: 4g
PVT Update Rate GNSS: 1–10 Hz RTK: 1–10 Hz
Raw Data Update Rate GNSS: 1 Hz GNSS: 1/2/5 Hz
Certifications
Regulatory Europe: CE Europe: CE*
Others RoHS RoHS
Interfaces
I2C Up to 400 kbps Under development
UART Adjustable: 9600–3000000 bps
Default: 115200 bps
Adjustable: 9600–3000000 bps
Default: 460800 bps
Protocols
Protocols NMEA 0183/RTCM 3.x NMEA 0183/RTCM 3.x
External Antenna Interface
Antenna Type Active⑤ or Passive Active⑤ or Passive
Antenna Power Supply External or VDD_RF pin of module External or VDD_RF pin of module
Electrical Characteristics
Supply Voltage Range (VCC) 1.75–1.98 V, typ. 1.8 V 1.75–1.98 V, typ. 1.8 V
I/O Voltage Following VCC Following VCC
Current Consumption (@ Default Constellations, 1.8 V)② Normal Operation:
33 mA (59.4 mW) @ Acquisition
33 mA (59.4 mW) @ Tracking
Power Saving Mode:
20 μA (36 μW) @ Backup Mode
Normal Operation:
41 mA (73.8 mW) @ Acquisition
41 mA (73.8 mW) @ Tracking
Power Saving Mode:
28 μA (50.4 mW) @ Backup Mode
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