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The JS-BNK43-1 features a dual-core CPU and 1408 super channels, coupled with a high-speed floating-point processor for enhanced satellite navigation signal processing. Its multi-frequency anti-interference technology and advanced RTK engine improve initialization speed, accuracy, and reliability, even in challenging environments like urban canyons and shaded areas. Ideal for high-precision applications in surveying, mapping, precision agriculture, drones, and autonomous robots.
Product Features
High performance chip
Support 1408 super channels
Full-system multi-frequency RTK engine and star-shaped RTK technology
Support multi-frequencies full system positioning
Instant RTK initialization technology
Independent satellite frequency tracking and 60dB narrowband anti-jamming technology
Small size（39.00mm*30.00mm*6.04mm±0.2mm），lightweight<25g，Suitable for relatively compact spaces
Support NMEA 0183 protocol, differential RTCM 3.X
Supports a wide range of communication interfaces, including UART, CAN etc...
Support PPS, EVENT etc...
Performance Indicators
| Parameter | Specification |
| Constellations & frequency band | GPS: L1C/A, L1C, L2P(Y), L2C, L5 |
| Galileo: E1, E5a, E5b | |
| BDS: B1I, B2I, B3I, B1C, B2a, B2b | |
| GLONASS: L1, L2 | |
| QZSS: L1, L2, L5 | |
| Observation accuracy (RMS) | BDS |
| 10 cm | |
| B11 B1C L1C L1 C/A G1 E1 Pseudorange | |
| 1 mm | |
| B3I L2P(Y) L2C G2 Pseudorange | |
| 10 cm | |
| 1 mm | |
| B2I L5 E5a E5b Pseudorange | |
| 10 cm | |
| 1 mm | |
| Initial time | < 5 s (typical value) |
| Initial reliability | > 99.9% |
| Timing accuracy (RMS) | 20 ns |
| Velocity accuracy (RMS) | 0.03 m/s |
| Baud rate | 9600–921600 bps (default 115200 bps) |
| Max data update rate | 50 Hz |
| Time to first fix | Cold start: < 30 s |
| Warm start: < 20 s | |
| Hot start: < 5 s | |
| PPS | Provides a 1PPS signal with adjustable polarity and output pulse width |
Pin Parameters
| No. | Name | Input/Output | Description |
| 1 | GND | - | Ground |
| 2 | VCC_IN | Input | GNSS power supply 3.5–12.0 V, conventional 5 V power supply |
| 3 | RX1 | Input | Serial port 1 GNSS receive data |
| 4 | TX1 | Output | Serial port 1 GNSS transmit data |
| 5 | GND | - | Ground |
| 6 | 3.3V_OUT | Output | 3.3 V — can be used to power other devices |
| 7 | RX2 | Input | Serial port 2 GNSS receive data |
| 8 | TX2 | Output | Serial port 2 GNSS transmit data |
| 9 | USB | Input/Output | TYPE-C power + data transmission |
| 10 | RF1 | Input | GNSS main antenna connect port, use for positioning, power supply voltage 3.0–5.5 V |
| A | CS | Input/Output | Optional |
| B | MOSI | Output | GNSS transmitter data |
| C | CLK | Output | Synchronization Timing |
| D | MISO | Input | GNSS receive data |
| E | SDRY | Input | Indicates slave device status, triggers master control to read |
| F | TX1 | Output | Serial port 1 GNSS transmitter data |
| G | RX1 | Input | Serial port 1 GNSS receive data |
| H | 3.3V_OUT | Output | 3.3 V — can be used to power other devices |
| I | RESET | Output | Reset |
| J | EVENT | Output | External interrupt triggered |
| K | GND | - | Ground |
| L | RX2 | Input | Serial port 2 GNSS receive data |
| M | TX2 | Output | Serial port 2 GNSS transmitter data |
| N | PPS | Output | Second pulse |
Product Application
UAVapplication
unmannedpilot
Intelligentlogisticsscheduling
Precisionagricultureandlocationservices
Surveying&mapping
Vehicledevicesapplication
Autonomousrobots
Precisecontrol
Protocols
| Protocols | Type |
| Data format | NMEA-0183, Unicore |
| Differential data | RTCM 3.X |
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