JS-BCK43H-3
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JS-BCK43H-3
RTK Positioning Boards
Jumpstar JS-BCK43H-3 Multi-Constellation Multi-Frequency RTK GNSS Module – Dual-Antenna Heading + Built-in IMU, Millimeter-Level Positioning, Miniature Embedded Design
Dual-Antenna High-Precision Heading
Interferometry heading, 0.2°@1m baseline accuracy.
Built-in IMU Fusion Navigation
Inertial auxiliary positioning, stable output with weak satellite signals.
Full-Constellation Multi-Band Support
BDS-2/3, GPS, GLONASS, Galileo, QZSS full-frequency tracking.
RTK Millimeter-Level Accuracy
Horizontal 8mm+1ppm, vertical 15mm+1ppm, fast 5s initialization.
Ultra-Strong Anti-Interference
Suppresses narrowband/single-tone interference up to 60dB signal-to-interference ratio.
Ultra-Compact & Lightweight
39.0×30.0×6.04mm, weight <25g, best-in-class SWaP.
High-Speed Update Rate
Max 50Hz positioning / 100Hz IMU for high-dynamic control.
Rich Interfaces
Dual UART + Type-C + Dual RF + PPS + EVENT, easy embedded integration.
Jumpstar JS-BCK43H-3
Multi-Constellation Multi-Frequency RTK GNSS Module
The JS-BCK43H-3 is a high-precision multi-frequency multi-constellation RTK GNSS module with dual-antenna input and built-in high-performance inertial navigation (IMU). It adopts interferometry technology to deliver high-reliability heading measurement, and integrates combined navigation algorithms to maintain stable positioning in complex environments with weak or transient satellite signal loss.
It supports full-system full-frequency satellite tracking and advanced anti-interference technology, with ultra-small size and light weight. It is widely used in drones, automated robots, precision control, precision agriculture, surveying and mapping and other high-precision positioning & heading scenarios.
Dual-antenna heading, built-in IMU, RTK mm-level accuracy, 60dB anti-interference, and industrial-grade reliability make it the ideal solution for demanding autonomous applications.
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Key Features & Benefits
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Dual-Antenna Heading + IMU Fusion Dual-antenna interferometry for high-precision heading; built-in IMU provides continuous positioning when satellite signals are blocked.
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Full-System Multi-Band Compatibility Covers BDS-2/3, GPS, GLONASS, Galileo, QZSS, NavIC, SBAS and L-Band full-frequency satellite signals.
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Ultra-High Precision RTK Performance RTK initialization time 5s (baseline <10km); horizontal accuracy 8mm+1ppm, vertical accuracy 15mm+1ppm, millimeter-level measurement.
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Professional Anti-Interference Capability Suppresses narrowband and single-tone radio interference in GNSS band, with interference-to-signal ratio up to 60dB.
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Miniature High-Density Design Compact size 39.00×30.00×6.04mm, weight <25g, ideal for space-constrained embedded devices.
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High-Speed Data Output Default 10Hz update rate; max single-point/RTK positioning 50Hz, IMU 100Hz for real-time control.
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Industrial-Grade Reliability -40℃~+85℃ operating temperature, 95%RH non-condensing, adapts to harsh outdoor environments.
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Technical Specifications
GNSS Performance
| Product Type | Multi-Constellation Multi-Frequency RTK GNSS Module (Dual-Antenna + Built-in IMU) |
| Supported Satellite Signals | Positioning: BDS-2/3, GPS, GLONASS, Galileo, QZSS, NavIC full bands; Heading: GPS L1/L5, BDS B1I/B2I, Galileo E1/E5a |
| Sensitivity | Tracking: -160dBm; Acquisition: -145dBm |
| Time to First Fix | Cold Start:20s; Warm Start:10s; Reacquisition:1s |
| Positioning Accuracy | SPP: Horizontal 1.5m, Vertical 3m; RTK: Horizontal 8mm+1ppm, Vertical 15mm+1ppm; PPP: Horizontal 0.1m, Vertical 0.2m |
| Heading Accuracy | 0.2°@1m baseline |
| IMU Parameters | Gyro: ±125°/s; Accelerometer: ±2g; Industrial-grade zero-bias & stability |
| Timing & Speed | PPS(RMS):20ns; Velocity:0.02m/s; Dead Reckoning:3%d |
| Update Rate | Positioning/RTK: Max 50Hz; IMU: Max 100Hz; Default 10Hz |
| Anti-Interference | Narrowband/single-tone interference suppression up to 60dB |
| Supported Protocols | NMEA 0183, RTCM 2.X/3.X, CMR, Custom Binary |
Electrical & Mechanical
| Operating Voltage | 3.5~12.0V DC (Typical 5V) |
| Operating Current | 118~136mA @5V; Power Consumption: 0.625~0.725W |
| Antenna Interface | RF1 (Positioning), RF2 (Heading); 50Ω, 3.0~5.5V, Gain 20~35dB |
| Dimensions | 39.00×30.00×6.04mm (Tolerance ±0.2mm) |
| Weight | <25g |
| Operating Temperature | -40℃ ~ +85℃ |
| Storage Temperature | -40℃ ~ +85℃ |
| Humidity | 95%RH Non-condensing |
| Interfaces | 2×UART, Type-C USB, RF1/RF2, PPS, EVENT, RESET, 3.3V Output |
| Certification | RoHS Compliant |
Typical Applications
Unmanned Aerial Vehicles (Drones)
Aerial surveying, autonomous flight and precise heading for drones
Fully Automated Robots & AGVs
Autonomous navigation for robots, AGVs with heading control
Precision Agriculture Machinery
Automated guidance with heading for tractors and harvesters
Intelligent Lawn Mowers
Robotic mowers with precise heading and boundary navigation
Geodetic Surveying & Mapping
Professional land surveying with heading for accurate orientation
Precision Control Systems
High-precision control with real-time heading feedback
Vehicle-Mounted Positioning & Heading
Precise heading and positioning for vehicles, boats and trains
Driving Test & Training
Vehicle tracking with heading for driving schools and test routes
Intelligent Logistics Scheduling
Asset tracking with heading for warehouse robots and AGVs
Resources & Downloads
JS-BCK43H-3 Datasheet
Complete specifications, pinout, electrical and mechanical details.
Mechanical Drawing
2D/3D mechanical dimensions and pad layout (39.0×30.0×6.04mm).
User Manual
Quick start guide, integration tips, and configuration protocols.
3D CAD Model
STEP, IGES and STL formats for mechanical integration (39.0×30.0×6.04mm).
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