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FPV Electronics > Camera & GPS
The VK2828U8G5LF are high-precision GNSS modules integrating u-blox M8 (U7G5LF) or M10 (U8G5LF) platforms with embedded flash memory for configuration retention. Designed for flight controllers, drone navigation, and robotics, they deliver concurrent multi-constellation positioning with G-MOUSE protocol support for dynamic attitude estimation. Features ultra-low power consumption and industrial-grade temperature resilience:cite[1]:cite[3]:cite[8].
| Parameter | VK2828U7G5LF | VK2828U8G5LF |
| GNSS Platform | u-blox M8N | u-blox M10 |
| Flash Memory | 4MB (config storage) | 8MB (config + logs) |
| Constellations | GPS/Galileo/SBAS/BeiDou | GPS/Galileo/BeiDou/GLONASS/QZSS |
| Update Rate | 1-5Hz configurable | 1-10Hz configurable |
| Positioning Accuracy | 2.5m CEP | 1.8m CEP (SBAS enabled) |
| Sensitivity | Tracking: -162dBm | Tracking: -166dBm |
| Protocol Support | NMEA 0183, UBX, G-MOUSE | NMEA 0183, UBX binary, G-MOUSE |
| Voltage Range | 3.3V-5V DC | 3.0V-5.5V DC |
| Interfaces | UART, I²C, SPI | UART, I²C, USB 2.0 |
| Antenna Port | Active ceramic patch + external | Active ceramic patch + external |
• G-MOUSE Mode: Real-time velocity/heading output for drone flight stabilization (yaw accuracy: ±0.5°):cite[8]
• AssistNow Support: A-GPS for 1s hot start and urban canyon optimization:cite[1]
• Multi-Band RF Front End: L1-band (1575.42MHz) with 50-channel tracking:cite[1]:cite[3]
• Embedded EEPROM: Stores configuration parameters (baud rate/NMEA sentences) during power-off:cite[1]
• PPS Output: 30ns-precision timing pulse for RTK synchronization:cite[2]
• Anti-Jamming Technology: Adaptive notch filters suppress RF interference:cite[8]
| Metric | VK2828U7G5LF | VK2828U8G5LF |
| Cold Start TTFF | ≤32s | ≤28s |
| Hot Start TTFF | 1s | 0.1s |
| Velocity Accuracy | 0.02m/s | 0.01m/s |
| Max Altitude | 18,000m | 50,000m |
| Max Velocity | 500m/s | 515m/s |
| Mode | Current (U7G5LF) | Current (U8G5LF) |
| Continuous Tracking | 25mA @3.3V | 18mA @3.3V |
| Power Save | 8mA | 3mW (Super-E mode) |
| Backup Mode | 150µA | 100µA |
• Autonomous waypoint navigation (G-MOUSE attitude fusion)
• Return-to-home precision landing systems
• Real-time kinematic (RTK) positioning for surveying drones
• AGV warehouse navigation
• High-speed vehicle telematics
• Agricultural robot guidance
• Emergency SOS beacons (with GSM integration):cite[5]
• Asset tracking collars
• Field mapping handhelds
• Operating Temp: -40°C to +85°C (industrial-grade):cite[1]:cite[8]
• Humidity Resistance: 95% non-condensing
• Vibration Immunity: 5Grms (10-500Hz, MIL-STD-810G)
• ESD Protection: ±15kV (IEC 61000-4-2)
• Waterproof Rating: IP67 (with enclosed casing)