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Quectel GNSS Modules

Quectel LC29H

Dual-band GNSS Module

High-precision, dual-band GNSS module
12.2 mm × 16.0 mm × 2.5 mm
Approx. 0.9g
GPS/QZSS, GLONASS, BDS, NavIC and Galileo
Operating temperature of -40°C to +85°C

LC29H is a series of dual-band, multi-constellation GNSS modules that support the concurrent reception of all four global GNSS constellations: GPS, BDS, Galileo, NavIC and GLONASS.

Compared to GNSS modules that track only L1 signals, the LC29H series can receive and track a higher number of visible satellites in multi bands, thereby significantly mitigating the multipath effect in deep urban canyons and improving positioning accuracy. By having an internal LNA and SAW filter, the module achieves better sensitivity and anti-interference capability. Featuring dual frequency support, the module delivers CEP accuracy values of 1m in autonomous mode and centimeter levels in the RTK capable variants. The optional dead reckoning function ensures the module’s superior positioning performance even in weak signal areas or when GNSS signals are not available.

Based on the receiver chip using 12nm technology, the LC29H series provides advanced power management enabling low-power GNSS sensing and position fixing, which makes the module an ideal solution for power-sensitive and battery-powered systems. Featuring high-precision positioning and low power consumption, the LC29H series is perfectly suited for applications such as real time tracking and sharing economy related services.

To learn more about Quectel’s RTK Correction Solution, which can be used with some LC29H variants to achieve centimeter-level accuracy in challenging conditions, please click here.

An overview of key distinctions between LC29H variants can be found below:

LC29H (AA)	Dual band (L1+L5), standard precision
LC29H (BA)	Dual band (L1+L5) high precision GNSS with RTK and DR functions
LC29H (CA)	Dual band (L1+L5) standard precision GNSS with DR function
LC29H (DA)	Dual band (L1+L5) high precision GNSS with 1Hz RTK function
LC29H (EA)	Dual band (L1+L5) high precision GNSS with 10Hz RTK and dual antenna heading functions
LC29H (AI)	Dual band (L1+L5), standard precision

Key Features

Multi-GNSS engine supporting GPS, GLONASS, BDS, Galileo, NavIC and QZSS
Concurrent reception of L1 and L5 GNSS band signals
Optional RTK functionality offering centimeter-level accuracy within seconds
Optional integrated dead reckoning (DR) function for enhanced position availability in GNSS-denied areas, supporting both 4-wheel and 2-wheel applications
Support for GNSS and IMU raw data
LC29H (AA) includes Galileo OSNMA anti-spoofing technology

GNSS Module	LC29H (AA)	LC29H (BA)	LC29H (CA)
Dimensions	12.2 mm × 16.0 mm × 2.5 mm	12.2 mm × 16.0 mm × 2.5 mm	12.2 mm × 16.0 mm × 2.5 mm
Weight	Approx. 0.9 g	Approx. 0.9 g	Approx. 0.9 g
Temperature Range
Operating Temperature	-40 °C to +85 °C	-40 °C to +85 °C	-40 °C to +85 °C
Storage Temperature	-40 °C to +90 °C	-40 °C to +90 °C	-40 °C to +90 °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	GPS/ QZSS: L1 C/A, L5 GLONASS: L1 Galileo: E1, E5a BDS: B1I, B2a NavIC: L5
Default GNSS Constellations	GPS + GLONASS + Galileo + BDS + QZSS	GPS + GLONASS + Galileo + BDS + QZSS	GPS + GLONASS + Galileo + BDS + QZSS
Number of Concurrent GNSS	4 + QZSS	4 + QZSS	4 + QZSS
SBAS	WAAS, EGNOS, MSAS and GAGAN	WAAS, EGNOS, MSAS and GAGAN	WAAS, EGNOS, MSAS and GAGAN
Function(s)	Standard; OSNMA	RTK + DR (integrated IMU); OSNMA*	DR (integrated IMU); OSNMA*
Horizontal Position Accuracy	Autonomous①: 1 m	Autonomous①: 1 m RTK②: < 0.1 m + 1 ppm	Autonomous①: 1 m
Vertical Position Accuracy	Autonomous①: 2 m	Autonomous①: 2 m RTK②: 2.5 cm + 1 ppm	Autonomous①: 2 m
DR Position Error (ADR)	-	4-wheeler: < 2 % of distance traveled without GNSS 2-wheeler: < 4 % of distance traveled without GNSS	4-wheeler: < 2 % of distance traveled without GNSS 2-wheeler: < 4 % of distance traveled without GNSS
DR Position Error (UDR)	-	4-wheeler: < 3 % of distance traveled without GNSS 2-wheeler: < 6 % of distance traveled without GNSS	4-wheeler: < 3 % of distance traveled without GNSS 2-wheeler: < 6 % of distance traveled without GNSS
Velocity Accuracy③	0.03 m/s	0.03 m/s	0.03 m/s
Accuracy of 1PPS Signal (RMS)③	20 ns	20 ns	20 ns
RTK Convergence Time	-	RTK②: < 10 s	-
Heading Accuracy	-	-	-
TTFF (with AGNSS)④	Full Cold Start: 5 s	Full Cold Start: 5 s	Full Cold Start: 5 s
TTFF (Without AGNSS)③	Full Cold Start: 26 s Warm Start: 16 s Hot Start: 1 s	Full Cold Start: 26 s Warm Start: 16 s Hot Start: 1 s	Full Cold Start: 26 s Warm Start: 16 s Hot Start: 1 s
Sensitivity (@ Default GNSS Constellations)	Acquisition: -147 dBm Tracking: -165 dBm Reacquisition: -159 dBm	Acquisition: -145 dBm Tracking: -165 dBm Reacquisition: -157 dBm	Acquisition: -145 dBm Tracking: -165 dBm Reacquisition: -157 dBm
Dynamic Performance③	Maximum Altitude: 10000 m Maximum Velocity⑤: 500 m/s Maximum Acceleration⑤: 4g	Maximum Altitude: 10000 m Maximum Velocity⑤: 500 m/s Maximum Acceleration⑤: 4g	Maximum Altitude: 10000 m Maximum Velocity⑤: 500 m/s Maximum Acceleration⑤: 4g
PVT Update Rate	1–10 Hz	1–10 Hz	1–10 Hz
Raw Data Update Rate	GNSS: 1 Hz	GNSS: 1 Hz IMU: 100 Hz (Max.)	GNSS: 1 Hz IMU: 100 Hz (Max.)
Certifications
Regulatory	Europe: CE	Europe: CE	Europe: CE
Others	RoHS	RoHS	RoHS
Interfaces
I2C	× 1 Up to 400 kbps	× 1 Up to 400 kbps	× 1 Up to 400 kbps
UART	× 2 Adjustable: 4800–3000000 bps Default: 115200 bps (UART1) or 3000000 bps (UART2)	× 2 Adjustable: 4800–3000000 bps Default: 115200 bps (UART1) or 3000000 bps (UART2)	× 2 Adjustable: 4800–3000000 bps Default: 115200 bps (UART1) or 3000000 bps (UART2)
SPI	× 1 (Multiplexed from I2C and UART1)	× 1 (Multiplexed from I2C and UART1)	× 1 (Multiplexed from I2C and UART1)
Protocols
Protocols	NMEA 0183/ RTCM 3.x	NMEA 0183/ RTCM 3.x	NMEA 0183/ RTCM 3.x
External Antenna Interface
Antenna Type	Active⑥ or Passive	Active⑥ or Passive	Active⑥ or Passive
Antenna Power Supply	External or VDD_RF pin of module	External or VDD_RF pin of module	External or VDD_RF pin of module
Electrical Characteristics
Supply Voltage Range (VCC)	3.1–3.6 V, typ. 3.3 V	3.1–3.6 V, typ. 3.3 V	3.1–3.6 V, typ. 3.3 V
I/O Voltage⑦	Typ. 2.8 V	Typ. 2.8 V	Typ. 2.8 V
Power Consumption (@ Default GNSS Constellations, 3.3 V)③	Normal Operation: 24 mA (79.2 mW) @ Acquisition 24 mA (79.2 mW) @ Tracking Power Saving Mode: 25 μA (82.5 μW) @ Backup Mode	Normal Operation: 32 mA (105.6 mW) @ Acquisition 32 mA (105.6 mW) @ Tracking Power Saving Mode: 25 μA (82.5 μW) @ Backup Mode	Normal Operation: 30 mA (99 mW) @ Acquisition 30 mA (99 mW) @ Tracking Power Saving Mode: 25 μA (82.5 μW) @ Backup Mode

NOTE:
1. ①: CEP 50 %, 24 hours static, -130 dBm, more than 6 SVs.
2. ②: CEP 50 %, with active high-precision antennas in an open-sky environment and within 1 km from the base station.
3. ③: Tested at room temperature, with typical operating voltage, and satellite signal of -130 dBm configured by the instrument.
4. ④: Open-sky, active high-precision antenna.
5. ⑤: ITAR limits.
6. ⑥: To further mitigate the impact of out-of-band signals on GNSS module performance, you must choose the active antenna whose SAW filter is placed in front of the LNA in the internal framework. DO NOT place the LNA in the front.
7. ⑦: The domain is 1.8 V for certain interfaces or pins. See hardware design for voltage details.
8. *: Under development.

GNSS Module	LC29H (DA)	LC29H (EA)	LC29H (AI)
Dimensions	12.2 mm × 16.0 mm × 2.5 mm	12.2 mm × 16.0 mm × 2.5 mm	12.2 mm × 16.0 mm × 2.5 mm
Weight	Approx. 0.9 g	Approx. 0.9 g	Approx. 0.9 g
Temperature Range
Operating Temperature	-40 °C to +85 °C	-40 °C to +85 °C	-40 °C to +85 °C
Storage Temperature	-40 °C to +90 °C	-40 °C to +90 °C	-40 °C to +90 °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	GPS/ QZSS: L1 C/A GLONASS: L1 Galileo: E1 BDS: B1I NavIC: L5
Default GNSS Constellations	GPS + GLONASS + Galileo + BDS + QZSS	GPS + GLONASS + Galileo + BDS + QZSS	GPS + GLONASS + Galileo + BDS + NavIC + QZSS
Number of Concurrent GNSS	4 + QZSS	4 + QZSS	5 + QZSS
SBAS	WAAS, EGNOS, MSAS and GAGAN	WAAS, EGNOS, MSAS and GAGAN	WAAS, EGNOS, MSAS and GAGAN
Function(s)	RTK; OSNMA*	RTK + Heading①; OSNMA*	Standard; OSNMA*
Horizontal Position Accuracy	Autonomous②: 1 m RTK③: 1 cm + 1 ppm	Autonomous②: 1 m RTK③: 1 cm + 1 ppm	Autonomous②: 1.8 m
Vertical Position Accuracy	Autonomous②: 2 m RTK③: 2.5 cm + 1 ppm	Autonomous②: 2 m RTK③: 2.5 cm + 1 ppm	Autonomous②: 2 m
DR Position Error (ADR)	-	-	-
DR Position Error (UDR)	-	-	-
Velocity Accuracy④	0.03 m/s	0.03 m/s	0.1 m/s
Accuracy of 1PPS Signal (RMS)④	20 ns	20 ns	80 ns
RTK Convergence Time	RTK③: < 10 s	RTK③: < 10 s	-
Heading Accuracy⑤	-	Heading: 0.2°	-
TTFF (with AGNSS)⑥	Full Cold Start: 5 s	Full Cold Start: 5 s	Full Cold Start: 5 s
TTFF (Without AGNSS)④	Full Cold Start: 26 s Warm Start: 16 s Hot Start: 1 s	Full Cold Start: 26 s Warm Start: 16 s Hot Start: 1 s	Full Cold Start: 29 s Warm Start: 24 s Hot Start: 1 s
Sensitivity (@ Default GNSS Constellations)	Acquisition: -145 dBm Tracking: -165 dBm Reacquisition: -157 dBm	Acquisition: -145 dBm Tracking: -165 dBm Reacquisition: -157 dBm	Acquisition⑦: -150 dBm Tracking⑦: -165 dBm Reacquisition⑦: -160 dBm
Dynamic Performance④	Maximum Altitude: 10000 m Maximum Velocity⑧: 500 m/s Maximum Acceleration⑧: 4g	Maximum Altitude: 10000 m Maximum Velocity⑧: 500 m/s Maximum Acceleration⑧: 4g	Maximum Altitude: 10000 m Maximum Velocity⑧: 500 m/s Maximum Acceleration⑧: 4g
PVT Update Rate	RTK: 1 Hz	RTK: 1–10 Hz	1–10 Hz
Raw Data Update Rate	GNSS: 1 Hz	GNSS: 1 Hz	GNSS: 1 Hz
Certifications
Regulatory	Europe: CE	Europe: CE	Europe: CE
Others	RoHS	RoHS	RoHS
Interfaces
I2C	× 1 Up to 400 kbps	-	× 1 Up to 400 kbps
UART	× 2 Adjustable: 4800–3000000 bps Default: 115200 bps (UART1) or 3000000 bps (UART2)	× 1 Adjustable: 4800–3000000 bps Default: 460800 bps	× 2 Adjustable: 9600–921600 bps (UART1) or 4800–3000000 bps (UART2) Default: 115200 bps (UART1) or 3000000 bps (UART2)
SPI	× 1 (Multiplexed from I2C and UART1)	-	× 1 (Multiplexed from I2C and UART1)
Protocols
Protocols	NMEA 0183/ RTCM 3.x	NMEA 0183/ RTCM 3.x	NMEA 0183/ RTCM 3.x
External Antenna Interface
Antenna Type	Active⑨ or Passive	Active⑨ or Passive	Active⑨ or Passive
Antenna Power Supply	External or VDD_RF pin of module	External or VDD_RF pin of module	External or VDD_RF pin of module
Electrical Characteristics
Supply Voltage Range (VCC)	3.1–3.6 V, typ. 3.3 V	3.1–3.6 V, typ. 3.3 V	3.1–3.6 V, typ. 3.3 V
I/O Voltage⑩	Typ. 2.8 V	Typ. 2.8 V	Typ. 2.8 V
Power Consumption (@ Default GNSS Constellations, 3.3 V)④	Normal Operation: 30 mA (99 mW) @ Acquisition 30 mA (99 mW) @ Tracking Power Saving Mode: 25 μA (82.5 μW) @ Backup Mode	Normal Operation: 30 mA (99 mW) @ Acquisition 30 mA (99 mW) @ Tracking Power Saving Mode: 25 μA (82.5 μW) @ Backup Mode	Normal Operation: 16 mA (52.8 mW) @ Acquisition 16 mA (52.8 mW) @ Tracking Power Saving Mode: 51 μA (168.3 μW) @ Backup Mode

NOTE:
1. ①: Heading function is implemented with two pieces of LC29H (EA) modules.
2. ②: CEP 50 %, 24 hours static, -130 dBm, more than 6 SVs.
3. ③: CEP 50 %, with active high-precision antennas in an open-sky environment and within 1 km from the base station.
4. ④: Tested at room temperature, with typical operating voltage, and satellite signal of -130 dBm configured by the instrument.
5. ⑤: Standard deviation value, static, open-sky, 1 m baseline length.
6. ⑥: Open-sky, active high-precision antenna.
7. ⑦: Tested with an external LNA with 17 dB gain and 0.55 dB noise figure.
8. ⑧: ITAR limits.
9. ⑨: To further mitigate the impact of out-of-band signals on GNSS module performance, you must choose the active antenna whose SAW filter is placed in front of the LNA in the internal framework. DO NOT place the LNA in the front.
10. ⑩: The voltage domain is 1.8 V for certain interfaces or pins (excluding LC29H (EA)). See hardware design for details.
11. *: Under development.