JS-UK40
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JS-UK40
High Precision RTK Modules
Jumpstar JS-UK40 High-Precision GNSS Helical Antenna Module - Multi-Constellation RTK, Ultra-High Sensitivity, Integrated Compact Design
Centimeter-Level RTK Accuracy
Delivers 2cm+1ppm horizontal RTK precision for high-precision positioning applications.
Ultra-High Sensitivity
Tracking sensitivity up to -167dBm, ensuring stable signal lock in weak signal environments.
Full Multi-Constellation Support
Concurrent tracking of GPS, BDS, GLONASS, Galileo, QZSS and SBAS for global coverage.
All-In-One Integration
Built-in high-gain active antenna, TCXO, LNA, SAW and RTC for simplified system integration.
Compact & Low-Power
Miniature helical design with intelligent power control, ideal for space-constrained portable devices.
Jumpstar JS-UK40
High-Precision GNSS Helical Antenna Module
The JS-UK40 is a high-performance concurrent GNSS helical antenna module built on the powerful U9D positioning engine. It adopts a multi-band RF front-end architecture to simultaneously receive and track all four major GNSS constellations (GPS, GLONASS, Galileo, BDS) plus QZSS and SBAS.
With exceptional acquisition sensitivity and advanced interference suppression, it provides reliable RTK centimeter-level positioning even in challenging signal conditions. It features intelligent power control, wide voltage supply, and integrated high-gain antenna, making it perfectly suited for handheld terminals, UAVs, agricultural automation, intelligent robots and other high-precision positioning scenarios.
-167dBm tracking sensitivity, 2cm+1ppm RTK accuracy, full multi-constellation support, and compact all-in-one design make JS-UK40 an ideal high-precision module.
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Key Features & Benefits
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High-Performance Position Engine Based on professional GNSS U9D platform for stable and reliable operation.
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Abundant Channel Resources 192 search channels and 60 tracking channels for fast satellite acquisition.
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High-Speed Data Update Supports up to 20Hz (GPS RTK) / 7Hz (GNSS RTK) update rate for real-time positioning.
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Ultra-High Sensitivity Tracking sensitivity -167dBm, reacquisition -148dBm, ensuring stable positioning in weak signal environments.
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Wide Protocol Compatibility Supports NMEA 0183, RTCM 3.3 and UBX proprietary protocols for flexible system docking.
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Wide Voltage Supply Single wide-range power supply design (3.3V-5.5V), adapting to different power supply scenarios.
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Industrial-Grade Reliability -40℃ to 85℃ operating temperature, suitable for harsh working environments.
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Technical Specifications
GNSS Performance
| Receiver Type | Multi-band concurrent GNSS RTK helical antenna module |
| Supported Constellations & Bands | GPS/QZSS/SBAS: L1C/A, L2C; Galileo: E1, E5b; GLONASS: L1OF, L2OF; BDS: B1I, B2I |
| Channels | 192 search channels, 60 tracking channels |
| Sensitivity | Tracking: -167dBm; Reacquisition: -148dBm; Cold Start Acquisition: -148dBm |
| Time to First Fix | Cold Start:25s; Warm Start:20s; Hot Start:2s (all satellites ≥-130dBm) |
| Positioning Accuracy | PVT:1.5m CEP; SBAS:1.0m CEP; RTK:2cm+1ppm (Horizontal, ≤30km baseline) |
| Time Accuracy | 1PPS:30ns RMS |
| Velocity Accuracy | 0.05m/s (50%@30m/s dynamic operation) |
| Operational Limits | Dynamics ≤4g; Altitude 80000m; Velocity 500m/s |
| Baud Rate | 9600-921600bps (Default:38400bps) |
| Max Update Rate | GPS RTK:20Hz; GNSS RTK:7Hz |
| Supported Protocols | NMEA 0183(V4.11/V4.10/V4.0/V2.3/V2.1), RTCM3.3, UBX(Proprietary) |
Electrical & Mechanical
| Antenna Type | Active helical antenna; Default passive size:φ35mm, height 25mm |
| Power Supply Voltage | 3.3V-5.5V (Typical:5.0V) |
| Operating Current | Acquisition:110-140mA@5.0V; Tracking:110-130mA@5.0V |
| Digital IO Voltage | 3.3V |
| Operating Temperature | -40℃ to 85℃ (without Farad capacitor) |
| Storage Temperature | -40℃ to 85℃ |
| Farad Capacitance Temperature | -25℃ to 60℃ (hot start unavailable outside this range) |
| Humidity | 95% |
| Mechanical Dimensions | Bottom diameter:39.80mm; Top diameter:35.00mm; Height:32.00mm ±0.3mm |
| Geomagnetic Sensor Options | Default:IST8310(0x0F); Optional:VCM5883(0x0C), QMC5883L(0x0D) |
| Interfaces | Dual UART (UART1/UART2), I2C (SDA/SCL), PPS, VCC, GND |
| Compliance | RoHS compliant |
Typical Applications
Handheld Terminals
High-precision mobile positioning and surveying devices
UAVs
Aerial surveying, mapping and autonomous flight positioning
Agricultural Automation
Precision agricultural machinery and unmanned farming
Intelligent Robots
Autonomous navigation and precise movement control
Aided Driving
Vehicle high-precision positioning and assisted navigation
Vehicle Management
Fleet positioning, monitoring and dispatch
Wisdom Construction Sites
Site personnel and equipment positioning
Intelligent Safety Testing
Real-time safety monitoring and positioning
Smart Cities
Urban infrastructure positioning and management
Resources & Downloads
JS-UK40 Datasheet
Complete specifications, pinout, electrical and mechanical details.
Mechanical Drawing
2D/3D mechanical dimensions and product layout (φ39.80×32.00mm).
User Manual
Quick start guide, integration tips, and configuration protocols.
3D CAD Model
STEP, IGES and STL formats for mechanical integration (φ39.80×32.00mm).
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