The CORVON FK-D1 is a compact GNSS navigation and positioning module built around the latest u-blox M9 receiver (UBLOX-M9) with a built-in QMC5883L magnetic compass. It receives GPS, GLONASS, BeiDou, Galileo, QZSS and SBAS concurrently, tracks up to 32 satellites, and outputs a navigation solution at up to 25 Hz for accurate, real-time positioning even in dynamic flight. An imported high-gain ceramic patch antenna and onboard Flash (configuration retained after power loss) give reliable acquisition and fast re-fix, while NMEA 0183 and UBX output over a 3.3 V TTL UART make it a drop-in fit for Betaflight, INAV, ArduPilot and PX4. The module measures 25 × 25 × 8.4 mm, weighs about 12 g, and connects through a single SH1.0-6P socket carrying power, UART and the I²C compass bus.
| Model | FK-D1 |
|---|---|
| Type | GNSS Module |
| Main Chip | UBLOX-M9 (u-blox M9) |
| Electronic Compass | QMC5883L |
| Satellite Systems | GPS L1C/A · GLONASS L1OF · BeiDou B1/B1C · Galileo E1B/C · QZSS L1 C/A · SBAS L1 C/A |
| Concurrent Channels | 4 |
| Tracking Sensitivity | −167 dBm |
| Reacquisition Sensitivity | −160 dBm |
| Cold-Start Sensitivity | −148 dBm |
| Position Accuracy | 1.5 m CEP |
| Velocity Accuracy | 0.1 m/s |
| Heading Accuracy | 0.3° |
| Startup Time | 26 s cold · 1 s hot |
| Update Rate | 1–25 Hz (default 1 Hz) |
| Output Protocol | NMEA 0183 · UBX (default NMEA) |
| Baud Rate | 4800–921600 bps (default 115200 bps) |
| Antenna | Imported high-gain ceramic patch |
| Supply Voltage | DC 3.6–5.5 V (typ. 5 V) |
| Operating Current | 40 mA @ 5 V |
| Data Retention | Onboard Flash (saved after power loss) |
| Connector | SH1.0-6P (1.0 mm pitch · 6P) |
| Dimensions | 25 × 25 × 8.4 mm (±0.5 mm) |
| Weight | ≈ 12 g |
| PPS Indicator | Blue LED — steady at power-up, blinks after 3D fix |
| Max Acceleration | ≤ 4 G |
| Max Altitude | 50000 m |
| Max Velocity | 500 m/s |
| Operating Temp. | −40°C – +85°C |
Connector SH1.0-6P (1.0 mm pitch), pins ordered as silk-printed on the board. UART logic level is 3.3 V TTL — connect module Rx to the flight-controller Tx and module Tx to the flight-controller Rx.
| Pin | Name | Function |
|---|---|---|
| 1 | GND | Ground |
| 2 | 5V | Power input · +5 V |
| 3 | Rx | UART RX (← FC TX) |
| 4 | Tx | UART TX (→ FC RX) |
| 5 | SCL | I²C clock · compass |
| 6 | SDA | I²C data · compass |
Thank you for choosing a CORVON product. Please read this disclaimer carefully — by using this product you acknowledge and agree to the following. Because we cannot control how this product is installed, used, or maintained, we accept no liability for any loss or damage arising from its use, and any unauthorized modification is undertaken at your own risk.
Mount the module away from power leads, high-current wiring, and other strong magnetic or RF sources, and keep the ceramic antenna facing the sky with a clear view for the best satellite reception. Observe correct wiring and polarity on the SH1.0-6P connector — reversed or mis-wired connections can permanently damage the module. Allow the receiver a clear-sky cold start to acquire a 3D fix before relying on its position output for flight.