This GPS/RTK HAT can track dual-frequency L1+L5 GNSS signals, substantially reducing multipath interference in urban environments and enhancing positioning accuracy. This module is compatible with Raspberry Pi series boards and Jetson Nano through its standard 40-pin GPIO extension header. It supports concurrent reception of multiple GNSS systems, including GPS, BDS, GLONASS, Galileo, and QZSS, which enables it to provide consistent and low-power consumption tracking. It has RTK technology for centimetre-level positioning accuracy, which is important for real-time tracking systems. Additionally, it includes a built-in low noise amplifier (LNA) and a surface acoustic wave (SAW) filter, which boost its sensitivity to -165dBm and strengthen its anti-interference capabilities, making it suitable for a variety of projects that require precise and reliable geolocation data. We also have the * LC29H(AA) GPS HAT to improve the positioning performance of service areas * LC29H(DA) GPS/RTK HAT for high-precision positioning of terminal devices Note: Raspberry Pi boards are NOT included. Features * Standard Raspberry Pi 40PIN GPIO extension header, supports Raspberry Pi series boards, Jetson Nano * Supports simultaneous tracking of L1+L5 dual-band satellite signals, reducing multipath effects in urban canyons and improving positioning accuracy * Supports concurrent receiving of multi-GNSS systems (GPS, BDS, GLONASS, Galileo and QZSS) while maintaining low power consumption * Supports GNSS raw observation and correction data output, suitable for establishing RTK base station * Built-in low noise amplifier and acoustic surface filter to realize -165dBm high sensitivity and enhance anti-interference performance * Supports multi-frequency active interference cancellation, effectively suppressing or eliminating narrowband signal (WiFi/2/3/4/5G) interference to ensure navigation accuracy * A-GNSS (Assisted GNSS) support, reducing the time to first fix (TTFF) with cold start when powered on to 5 seconds * Support QGNSS software, easy to set various module functions * Onboard battery holder, supports ML1220 rechargeable cell, for preserving ephemeris information and hot starts * Onboard 4 LED indicators for module operating status * Comes with online development resources and manual (Python examples for Raspberry Pi/Jetson Nano) What's on Board * LC29H module * RT9166A-28PXL 5V to 2.8V LDO chip * CP2102N USB to UART chip * Raspberry Pi 40PIN GPIO header for connecting with Raspberry Pi * UART selection jumper A: control the LC29H via USB to UART B: control the LC29H via Raspberry Pi C: access Raspberry Pi via USB to UART * IPEX 1 connector LC29H module antenna connector * Micro USB interface * RT9193-33PB 5V to 3.3V LDO chip * RESET button reset the LC29H module * Status Indicators PWR: Power Indicator RXD/TXD: UART transceiver indicator PPS: GPS status indicator * NDC7002N I2C voltage translator * ML1220 Battery holder ML1220 rechargeable cell, for preserving ephemeris information and hot start Specifications Frequency Band GPS/QZSS: L1C/A, L5 BDS: B1I, B2a Galileo: E1, E5a GLONASS: L1 Number of Concurrent GNSS GPS/QZSS+BDS+Galileo+GLONASS SBAS (WAAS, EGNOS, MSAS, GAGAN) N/A RTK Function RTK Base Positioning Accuracy PVT N/A RTK N/A Navigation Update Rate PVT N/A RTK N/A RAW N/A RTK Convergence Time N/A Time to First Fix (AGNSS OFF) Cold Starts N/A Hot Starts N/A Aided Starts N/A Time to First Fix (EASY ON) N/A Time to First Fix (AGNSS ON) Cold Starts N/A Hot Starts N/A Aided Starts N/A Sensitivity Tracking and Navigating -165dBm Re-Acquisition -159dBm Cold Starts -147dBm Velocity Accuracy N/A PPS Accuracy N/A Dynamic Performance Acceleration (Max): 4g Altitude (Max): 10000m Velocity (Max): 500m/s Communication Interface UART (9600~3000000bps, 115200bps by default) I2C (Max 400KHz) Protocol NMEA 0183 V4.10, RTCM 3.x Power Supply 5V Overall Current <40mA@5V (Continue mode) Operating Temperature -40~85°C Dimensions 65 x 30.5mm Connection Example - Raspberry Pi Resources * Product Wiki * Schematic Pinout Package Contents * 1x LC29H(BS) GPS/RTK HAT * 2x 20-pin female header * 1x GPS External Antenna (D) * 1x IPEX 1 to SMA cable ~17cm * 1x Screws pack https://elecena.pl/product/25866491/lc29h-bs-gps-rtk-hat-for-raspberry-pi 2024-05-13 https://elecena.pl/product/25866491/lc29h-bs-gps-rtk-hat-for-raspberry-pi 2024-09-18 https://elecena.pl/product/25866491/lc29h-bs-gps-rtk-hat-for-raspberry-pi 2024-11-29 https://elecena.pl/product/25866491/lc29h-bs-gps-rtk-hat-for-raspberry-pi 2024-11-30 https://elecena.pl/product/25866491/lc29h-bs-gps-rtk-hat-for-raspberry-pi 2025-02-13 https://elecena.pl/product/25866491/lc29h-bs-gps-rtk-hat-for-raspberry-pi 2025-08-06 https://elecena.pl/product/25866491/lc29h-bs-gps-rtk-hat-for-raspberry-pi 2025-11-28 https://elecena.pl/product/25866491/lc29h-bs-gps-rtk-hat-for-raspberry-pi 2025-11-29