JS-NK40
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JS-NK40
High Precision RTK Modules
Jumpstar JS-NK40 High-Precision GNSS Helical Antenna Module - 1408 Super Channels, Centimeter-Level RTK Positioning
Centimeter-Level RTK Accuracy
Delivers horizontal 1.5cm+1ppm and vertical 2.0cm+1ppm RMS precision for high-precision positioning.
1408 Super Channels
Powerful satellite signal processing ensures stable positioning in complex electromagnetic environments.
Full-System Multi-Frequency Support
Tracks BDS, GPS, GLONASS, Galileo, QZSS and SBAS simultaneously for universal signal compatibility.
Integrated Helical Antenna
Built-in high-gain active helical antenna, no external antenna required for easy integration.
Ultra-Compact & Lightweight
39.80×35.00×32.0mm size and <10.2g weight, ideal for space-limited devices.
High-Precision GNSS Helical Antenna Module
JS-NK40 is a high-precision GNSS helical antenna module with built-in multi-system multi-frequency on-chip RTK positioning solution. Powered by a new-generation high-performance GNSS chip, it equips a 2GHz dual-core CPU, advanced anti-interference unit, high-speed floating-point processor and dedicated RTK coprocessor.
With 1408 super channels, it enhances satellite navigation signal processing capacity and maintains reliable high-precision positioning even in complex electromagnetic environments. It is specially designed for high-precision applications such as drones, lawnmowers, precision agriculture and surveying mapping.
Industrial-grade reliability and compact size make it an ideal choice for space-constrained yet precision-critical platforms.
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Key Features & Benefits
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20Hz High-Speed Update RTK positioning data update rate up to 20Hz for real-time precise positioning.
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Instant RTK Initialization Typical initialization time <5s, quickly achieving fixed RTK solution.
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Adaptive RTCM Recognition Automatically identifies RTCM format differential input for seamless RTK operation.
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All-In-One Integration Built-in TCXO, LNA, SAW filter, RTC and high-gain helical antenna, simplifying system design.
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Rich Interfaces Dual UART, I2C and PPS interfaces support flexible communication and data output.
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Industrial-Grade Reliability Operates in -40℃ to 85℃ temperature range, adapting to harsh working conditions.
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Standard Protocol Support Compatible with NMEA 0183, Unicore and RTCM3.X protocols for wide system docking.
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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/B2I/B3I; GPS L1C/A/L2P(Y)/L2C/L5; GLONASS L1/L2; Galileo E1/E5a/E5b; QZSS L1/L2/L5; SBAS |
| Channels | 1408 super channels |
| Time to First Fix | Cold start <30s (-130dBm, ≥12 satellites) |
| Positioning Accuracy (RMS) | 3D: H 1.5m, V 2.5m; DGPS: H 0.4m+1ppm, V 0.8m+1ppm; RTK: H 1.5cm+1ppm, V 2.0cm+1ppm |
| Time Accuracy | 20ns (RMS) |
| Velocity Accuracy | 0.03m/s (RMS, 99%@static open sky) |
| RTK Initialization Time | <5s (typical) |
| Baud Rate | 9600-921600bps (Default: 115200bps) |
| Max Data Update Rate | 20Hz |
| Supported Protocols | Data: NMEA 0183, Unicore; Differential: RTCM3.X |
Interfaces & Power
| Antenna Type | Active helical antenna (φ35mm, Height 25mm) |
| Power Supply Voltage | 3.3V-5.5V (Typical: 5.0V) |
| Operating Current | 180mA-310mA @3.3V (Typical: 220mA @3.3V) |
| VCC Ripple | ≤50mV |
| Operating Temperature | -40℃ to 85℃ (without Farad capacitor) |
| Storage Temperature | -40℃ to 85℃ |
| Farad Capacitor Temperature | -25℃ to 60℃ (hot start unavailable outside this range) |
| Humidity | 95% |
| Mechanical Dimensions | 39.80mm×35.00mm×32.0mm ±0.3mm |
| Weight | <10.2g |
| Compliance | RoHS compliant |
Typical Applications
UAVs & Drones
Autonomous flight, aerial surveying and mapping
Automotive Applications
Intelligent driving and vehicle positioning
Precision Agriculture
Auto-steering agricultural machinery and precision operation
Handheld Devices
High-precision mobile positioning terminals
Logistics Security
Asset tracking and security monitoring
Surveying & Mapping
Geographic survey and topographic data collection
Robotics & Smart Ports
Autonomous navigation, automated terminal operation
Power Grid & Transportation
Power facility inspection, traffic monitoring
Resources & Downloads
JS-NK40 Datasheet
Complete specifications, electrical parameters, and mechanical dimensions.
Protocol Documentation
NMEA 0183, Unicore, RTCM3.X protocol definitions.
User Manual
Quick start guide, RTK configuration, and integration tips.
3D CAD Model
STEP, IGES and STL formats for mechanical integration (39.8×35×32mm).
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