JS-SK40
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JS-SK40
High Precision RTK Modules
Jumpstar JS-SK40 High-Precision GNSS Helical Antenna Module - 789 Super Channels, Centimeter-Level RTK, Dual Antenna Input
Ultra-High RTK Precision
Delivers horizontal 0.6cm+0.5ppm and vertical 1cm+1ppm RMS accuracy for top-tier positioning performance.
789 Hardware Super Channels
Powerful satellite signal processing ensures stable tracking in complex challenging environments.
Dual Antenna Input
Built-in active antenna + external MMCX antenna port, supports both positioning and direction-finding applications.
Full-Sky Multi-Constellation Tracking
Quad-band GNSS receiver with global satellite compatibility for universal usage.
Compact & Lightweight
39.80×35.00×32.41mm size and <10.2g weight, ideal for space-constrained devices.
Jumpstar JS-SK40
High-Precision GNSS Helical Antenna Module
The JS-SK40 is a compact, multi-system, multi-frequency high-precision RTK positioning module powered by advanced GNSS+ technology. It integrates professional anti-interference & anti-spoofing detection with automatic mitigation, robust shock/vibration resistance, ionospheric interference protection, and multipath mitigation algorithms. With 789 hardware super channels and full-sky satellite tracking capability, it provides ultra-reliable high-precision positioning even in harsh environments.
Featuring industry-leading ultra-low power consumption and dual-antenna design, it is the optimal solution for drones, robotics, precision agriculture, surveying mapping, autonomous systems and other high-precision positioning applications.
789 super channels, dual-antenna design, cm-level RTK, and multi-layer anti-jamming make JS-SK40 an ideal high-precision GNSS module.
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Key Features & Benefits
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20Hz High-Speed RTK Update Max positioning data update rate up to 20Hz for real-time dynamic precise positioning.
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Multi-Layer Anti-Interference AIM+ anti-interference/anti-spoofing, LOCK+ anti-shock, IONO+ ionosphere protection, APME+ multipath mitigation.
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Dual Antenna Design Built-in active antenna for positioning; external MMCX antenna for direction-finding (orientation).
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Full Raw Measurement Data Supports output of complete original measurement data for professional development.
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Ultra-High Timing Accuracy PPS accuracy up to 1.4ns RMS, event accuracy <3ns, latency <10ms (99.9%).
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Rich Interfaces Dual UART, I2C, PPS and MMCX RF connector, supporting flexible communication and expansion.
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Industrial-Grade Reliability -40℃ to 85℃ operating temperature, adapting to various harsh working environments.
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Technical Specifications
GNSS Performance
| Receiver Type | Multi-system multi-frequency high-precision RTK GNSS helical antenna module |
| Supported Constellations & Bands | BDS: B1I/B1C/B2a/B2I/B2b/B3I; GPS: L1C/A/L1C/L2PY/L2C/L5; GLONASS: L1CA/L2CA/L2P/L3 CDMA; Galileo: E1/E5a/E5b/E6; QZSS: L1C/A/L1C/B/L2C/L5/L6* |
| Channels | 789 hardware super channels |
| Time to First Fix | Cold Start: 35s; Hot Start: 10s; Reacquisition: 1s; RTK Initialization: 7s (baseline<30km) |
| Sensitivity | Tracking: -150dBm (20dB-Hz); Acquisition: -140dBm (30dB-Hz) |
| Positioning Accuracy (RMS) | 3D: Horizontal 1.5m, Vertical 2m; DGNSS: Horizontal 0.4m, Vertical 0.7m; RTK: Horizontal 0.6cm+0.5ppm, Vertical 1cm+1ppm |
| Time Accuracy | PPS: 1.4ns RMS; Event: <3ns; Latency: <10ms (99.9%) |
| Velocity Accuracy | 3cm/s |
| Baud Rate | 4800-4M bps (Default: 115200bps) |
| Max Data Update Rate | 20Hz |
| Supported Protocols | NMEA 0183 (v2.3/v3.0/v4.0), SBF (Proprietary), RTCM3.X (MSM included) |
Electrical & Mechanical
| Antenna Configuration | Dual antenna: built-in active antenna + external MMCX antenna |
| Antenna Bias & Gain | Bias voltage: 3.0-5.5V (150mA current limit); Gain: 15~35dB |
| Power Supply Voltage | 4.8V-5.5V (Typical: 5.0V) |
| Operating Current | Acquisition: 135mA-180mA@5.0V; Tracking: 123mA-170mA@5.0V |
| Interfaces | Dual UART (UART1/UART2), I2C (SDA/SCL), PPS, MMCX RF connector |
| Operating Temperature | -40℃ ~ +85℃ |
| Storage Temperature | -45℃ ~ +85℃ |
| Humidity | 95% |
| Mechanical Dimensions | 39.80mm × 35.00mm × 32.41mm ±0.3mm |
| Weight | <10.2g |
| Geomagnetic Sensor Options | Default: IST8310 (0x0F); Optional: VCM5883 (0x0C), QMC5883L (0x0D) |
| Compliance | RoHS compliant |
Typical Applications
UAV/Drones
Autonomous flight, aerial surveying and mapping
Automotive Applications
Intelligent driving and high-precision vehicle positioning
Precision Agriculture
Auto-steering agricultural machinery and precision operation
Marine Navigation
Ship positioning and maritime fleet management
Logistics & Security
Asset tracking and cargo security monitoring
Surveying & Mapping
Professional geographic survey and topographic data collection
Robotics
Autonomous navigation and precise movement control
Smart Ports
Automated terminal operation and container positioning
Power Grid & Electricity
Power facility inspection and grid positioning
Smart Transportation
Intelligent traffic monitoring and management
Resources & Downloads
JS-SK40 Datasheet
Complete specifications, pinout, electrical and mechanical details.
Mechanical Drawing
2D/3D mechanical dimensions and product layout (39.80×35.00×32.41mm).
User Manual
Quick start guide, integration tips, and configuration protocols.
3D CAD Model
STEP, IGES and STL formats for mechanical integration (39.80×35.00×32.41mm).
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