Status:
Key Features
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Version:
Quectel LC79D
Ultra-Small Dual-Band
Multi-Constellation
GNSS Module
Featuring a concurrent multi-constellation GNSS receiver on dual GNSS bands, the LC79D can support L1 and L5
bands for GPS, Galileo and QZSS satellites, L1 band for GLONASS and BeiDou satellites as well as L5 band for IRNSS
satellite.
Compared with the GNSS modules working on L1 band only, LC79D greatly increases the number of satellites
involved in tracking and positioning, thereby significantly reducing the multipath effect caused by high-rise buildings
in urban environments, reducing signal acquisition time and improving positioning accuracy. The optional dead-
reckoning feature enables high positioning performance, even when GNSS signal is absent or compromised.
LC79D is AIS-140 compliant, and its on-board LNAs and SAW filters serve to ensure better positioning under weak
signal conditions and other harsh environments. The GNSS chipset using 28 nm process technology, coupled with the
advanced low-power management solution, enables low-power GNSS sensing and positioning determination and
makes the module an ideal solution for power-sensitive and battery-powered systems.
Due to its excellent performance in improving position drift and enhancing positioning accuracy in dense urban
canyon environment, LC79D has become a popular selection for real-time tracking systems, sharing economy
applications and so on.
Compact design, low power consumption and high performance make it ideal for vehicle, people and asset tracking
as well as sharing emobility applications.
Ultra-compact size: 10.1 mm × 9.7 mm × 2.4 mm
Multi-GNSS engine for GPS, GLONASS, IRNSS, BeiDou,
Galileo and QZSS
Support dual GNSS bands (L1, L5)
Support AGNSS
Built-in LNA for better sensitivity
Support SPI*, UART and I2C interfaces
Support SDK command developed by Quectel
Two-wheel and four-wheel DR functions are optional
1.1 Released
L1+L5
Dual Bands
Multi-constellation GNSS
Ultra-compact Size
RoHS Compliant
Wide Operation
Temperature:
-40 °C to +85 °C
Low Power
Consumption
10.1 mm
9.7 mm 2.4 mm
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HQ address: Building 5, Shanghai Business Park Phase III (Area B), No.1016 Tianlin Road, Minhang District, Shanghai 200233, China
Tel: +86 21 51086236 Email: info@quectel.com
Quectel LC79D
Dual
-Band GNSS Module
LC
79D
Region
Global
Dimensions
10.1 mm
× 9.7 mm × 2.4 mm
Weight
Approx.
0.42 g
Working Mode
Standard Mode/ Two
-wheel DR Mode* (Optional) / Four-wheel DR Mode* (Optional)
Embedded Flash
Supported
Temperature Range
Operating Temperature
-
40 °C to +85 °C
Extended Temperature
-
40 °C to +90 °C
GNSS Features
Supported Bands
GPS L1 C/A, Galileo E1, QZSS L1: 1575.42 MHz
GPS L5, Galileo E5a, QZSS L5: 1176.45 MHz
IRNSS L5: 1176.45 MHz
GLONASS L1: 1602.5625 MHz
BeiDou
B1: 1561.098 MHz
Default GNSS Constellation
GPS +
BeiDou + Galileo + GLONASS + QZSS
Channels
32 Channels
Horizontal Position Accuracy
Autonomous: < 1.2 m CEP
Velocity Accuracy
Without Aid: < 0.1 m/s
Acceleration Accuracy
Without Aid: < 0.1 m/s²
TTFF (with AGNSS)
Cold Start: < 5 s
TTFF (without AGNSS)
Cold Start: < 34 s
Warm Start: < 30 s
Hot Start: < 2 s
Sensitivity
Acquisition:
-147 dBm
Tracking:
-163 dBm
Reacquisition:
-158 dBm
Dynamic Performance
Maximum Altitude: Max 18000 m
Maximum Velocity: Max 515 m/s
Maximum Acceleration: 4g
Certifications
Regulatory
CE
Others
RoHS
Interfaces
SPI Interface*
Multiplexed from UART
I2C Interface
Works on master mode
UART Interface
Adjustable: 115200
–921600 bps
Default: 115200 bps
Update Rate: 1 Hz
I/O Voltage
Typical 1.8 V
Protocols
NMEA 0183
External Antenna Interface
Antenna Type
Passive or Active
Antenna Power Supply
External or
Internal (through VCC_RF)
Electrical Features
Supply Voltage Range
1.7
–1.9 V, Typ. 1.8 V
Current Consumption
(@ 1.8 V, Standard
Mode)
Normal Operation: 47 mA @ Acquisition
43 mA @ Tracking
Power Saving Modes: 200 μA @ Sleep Mode
88 μA @ Standby Mode
Note:
*: under development/planning.