The NK43-2 is a high-precision multi-frequency GNSS module with onboard RTK positioning and dual-antenna heading calculation. Featuring a next-gen GNSS chip, a 2GHz dual-core CPU, and advanced anti-interference technology, it supports 1408 super channels for enhanced signal processing. Ideal for UAVs, lawn mowers, precision agriculture, and surveying applications, it ensures reliable positioning even in complex electromagnetic environments.
Product Features
Based on the high-performance JS-N2 module
Supports 1408 super channels
Supports multi-system, multi-frequency high-precision RTK positioning calculation
RTK positioning data update rate up to 20Hz
Supports BDS B11/B21/B31 +GPS L1/L2/L5+GLONASS L1/L2 + Galileo E1/E5a/E5b + QZSS L1/L2/L5 + SBAS
Adaptive recognition of RTCM format for differential input
Integrated TCXO, LNA, SAW,RTC.Integrated high-gain helical antenna
Lightweight and compact (48.0mm x43.2mm x37.0mm±0.3mm)
Instant RTK initialization technology
Performance
| Parameters | Details |
| Constellations & Frequency bands | BDS: B1I, B2I, B3I |
| GPS: L1C/A, L1C, L2P(Y), L5 | |
| GLONASS: L1, L2 | |
| Galileo: E1, E5a, E5b | |
| QZSS: L1, L2, L5 | |
| Time to First Fix | Cold Start < 30 s |
| Time Accuracy (RMS) | 20 ns |
| Velocity Accuracy (RMS) | 0.03 m/s |
| Initialization Time | < 5 s (Typical) |
| Baud Rate | 9600–921600 bps (default 115200 bps) |
| Date Update Rate | 20 Hz |
Pin Parameters
| No. | Name | I/O | Description |
| 1 | GND | G | Ground |
| 2 | TX2 | O | UART2 Output RTCM3 Data |
| 3 | PPS/RX2 | O/I | Serial Port (UART2 for 1PPS Output <Default>/RTCM3 Input) |
| 4 | SDA | I/O | I2C Data (Leave open if not used) |
| 5 | SCL | I/O | I2C Clock (Leave open if not used) |
| 6 | TX1 | O | UART1 Data Output |
| 7 | RX1 | I | UART1 Data Input |
| 8 | VCC | I | Power Supply Voltage |
Product Application
UAV/Drones
Precision Agriculture
Automotive Applications
Handheld Devices
Logistics & Security
Smart Ports
Surveying & Mapping
Power Grid & Electricity
Intelligent Robots
Intelligent Transportation
| Parameter | Protocol |
| Data Format | NMEA 0183 |
| Differential Data | RTCM3.3/3.2/3.1/3.0 |
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