FK-C1 GNSS

The FK-C1 is a fast-update GNSS + compass module for FPV drones and lightweight fixed-wing aircraft — a u-blox M9 92-channel receiver running up to 25 Hz with an IST8310 magnetometer.

- u-blox M9 receiver, 92 channels, up to 32 satellites
- Quad-constellation: GPS · Galileo · BeiDou · GLONASS
- IST8310 compass for heading
- 1.5 m CEP · up to 25 Hz update rate
- SH1.0-6P connector, 3.6–5.5 V supply

Key specs:
Receiver: u-blox M9 · 92 channels · up to 32 satellites
Constellations: GPS · Galileo · BeiDou · GLONASS
Compass: IST8310
Accuracy: 1.5 m CEP · heading 0.3°
Update rate: 1–25 Hz · Protocols: NMEA 0183 / UBX (default 115200 baud)
Supply: 3.6–5.5 V · 40 mA @ 5 V
Size & weight: 20 × 20 × 8.4 mm · ≈8 g

In the box:
1× FK-C1 GNSS module
1× SH1.0-6P cable (160 mm)

Full pinout, wiring, and electrical data: see the spec sheet on this page.