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The JS-UK40 is a multi-constellation GNSS receiver supporting concurrent GPS, GLONASS, Galileo, BDS, QZSS, and SBAS. Its advanced multi-band RF front-end allows for RTK navigation solutions with high sensitivity and fast acquisition. Built for reliability in challenging conditions, it provides robust positioning and interference suppression.
Product Features
Build on high performance GNSS U9D
192 search channels and 60 trace channels
Cold start acquisition sensitivity of -148dBm and -167dBm tracking sensitivity
All GNSS up to 7Hz update rate
Supports GPS,BDS, GLONASS, Galileo and QZSS,SBA
Integrated TCXO, LNA, SAW, RTC
Configurable peripheral IO pins
Integrated high gain antenna
Low power consumption and it has intelligent power control mechanism
Single supply with wide voltage range
Compact size (Bottom diameter39.80mm,Head diameter35.00mm,Height 32.00mm ) ±0.3mm
Performance Indicators
| Parameter | Specification |
| Receiver type | GPS/QZSS/SBAS L1C/A L2C |
| GLONASS L1OF L2OF | |
| Galileo E1 E5b | |
| BDS B1I B2I | |
| Sensitivity | Tracking: -167 dBm |
| Reacquisition: -148 dBm | |
| Time-To-First-Fix | Cold Start: 25 s |
| Warm Start: 20 s | |
| Hot Start: 2 s | |
| Horizontal Position accuracy | PVT²: 1.5 m CEP |
| SBAS²: 1.0 m CEP | |
| Position accuracy | RTK: 2 cm + 1 ppm (Horizontal) |
| Accuracy of time pulse signal | RMS: 30 ns |
| Velocity accuracy | GNSS: 0.05 m/s |
| Operational limits | Dynamics: ≤ 4 g |
| Altitude: 80 000 m | |
| Velocity: 500 m/s | |
| Baud Rate | 9600–921600 bps (Default 38400 bps) |
| Max navigation update rate | RTK(GPS): 20 Hz |
| RTK(GNSS): 7 Hz |
Pin Parameters
| No. | Name | I/O | Description |
| 1, A | GND | G | Ground |
| 2, B | TX2 | O | UART2 output RTCM3 data |
| 3, C | RX2/PPS | I/O | Serial Port (UART2: for 1PPS output <Default>/RTCM3 input) |
| 4, D | SDA | I/O | I2C Data (keep open if not used) |
| 5, E | SCL | I/O | I2C Clock (keep open if not used) |
| 6, F | TX1 | O | UART1 output |
| 7, G | RX1 | I | UART1 input |
| 8, H | VCC | P | Main supply |
Product Application
Hand-held terminal
Aided driving
Wisdom path field
Intelligent safety testing
Direct detection
Vehicle management
UAV
Agricultural automation
Intelligent city
Intelligent robot
Protocols
| Protocol | Type |
| NMEA 0183 V 4.11 (default), 4.10, 4.0, 2.3, 2.1 | Input/output |
| RTCM 3.3 | Input/output |
| UBX | Input/output, UBX proprietary |
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