Overview
The Beitian BE-575 / BK-575 / BK-575H is a GNSS GPS module product_type designed for UAV flight controllers such as Pixhawk, PX4, and APM, supporting multi-constellation positioning for aerial photography and general drone navigation. Available option models: BE-575, BK-575, BK-575H.
Key Features
- Simultaneous reception of four satellite systems: BeiDou, GPS, GLONASS, Galileo (model-dependent bands listed in Specifications).
- Two output protocols: NMEA, UBX.
- Update frequency up to 0.25Hz–25Hz (default 1Hz; model-dependent maximum listed in Specifications).
- Baud rate adjustable 4800–921600 bps (default varies by model).
- Status indication and user functions (model-dependent): safety switch, buzzer, RGB indicator, GPS FIX light.
- Pi-type antenna network design, impedance matching (50Ω), antenna VSWR below 1.6.
For installation help or pre-sales compatibility questions, contact support@rcdrone.top or visit https://rcdrone.top/.
Specifications
Common Mechanical
| Body size | Φ59.2 × 17.8 mm |
Model Comparison (BE-575 vs BK-575 vs BK-575H)
| Parameter | BE-575 | BK-575 | BK-575H |
|---|---|---|---|
| Working mode / bands | GPS L1 C/A, QZSS L1 C/A/S, BDS B1I/B1C, Galileo E1B/C, SBAS L1 C/A: WAAS, EGNOS, MSAS, GAGAN | GPS L1 C/A, QZSS L1 C/A/S, GLONASS L1OF, BDS B1I, Galileo E1B/C, SBAS L1 C/A: WAAS, EGNOS, MSAS, GAGAN | GPS L1 C/A, QZSS L1 C/A/S, GLONASS L1OF, BDS B1I, Galileo E1B/C, SBAS L1 C/A: WAAS, EGNOS, MSAS, GAGAN |
| Channel | N/A | 92 searching channel | 92 searching channel |
| Sensitivity (table) | Cold start -148 dBm; Hot start -160 dBm | Cold start -148 dBm; Hot start -159 dBm | Cold start -148 dBm; Hot start -159 dBm |
| Capture sensitivity test (table) | Tracking -166 dBm; Re-arrest -160 dBm; Cold start -148 dBm; Warm start -160 dBm | Tracking -167 dBm; Re-arrest -160 dBm; Cold start -148 dBm; Warm start -159 dBm | Tracking -167 dBm; Re-arrest -160 dBm; Cold start -148 dBm; Warm start -159 dBm |
| Horizontal accuracy | 2.0 m CEP | 1.5 m CEP | 1.5 m CEP |
| Velocity / speed accuracy | 0.05 m/s | 0.05 m/s | 0.05 m/s |
| PPS time accuracy | RMS 30 ns; 99% 60 ns | RMS 30 ns; 99% 60 ns | RMS 30 ns; 99% 60 ns |
| Baud rate | 4800 bps – 921600 bps; default 115200 bps | 4800 bps – 921600 bps; default 115200 bps | 4800 bps – 921600 bps; default 38400 bps |
| Output level | TTL level | TTL level | CAN level |
| Output protocol | NMEA, UBX | NMEA, UBX | NMEA, UBX |
| Frequency of updates | 0.25Hz – 18Hz; default 1Hz | 0.25Hz – 25Hz; default 1Hz | 0.25Hz – 25Hz; default 1Hz |
| FLASH | With FLASH | With FLASH | With FLASH |
| Supply / voltage | DC voltage 3.6V–5.5V; typical: 5.0V | DC voltage 3.6V–5.5V; typical: 5.0V | DC voltage 5.0V |
| Current | 30 mA / 5.0V | 45 mA / 5.0V | 120 mA |
| Weight | 36 g | 36 g | 33 g |
| MCU | None | None | Cortex-M4 |
| Barometer | None (table also shows: IST8310) | None (table also shows: IST8310) | MS5611-01BA03 (table also shows: RM3100) |
| Switch | None | None | Support |
| Buzzer | None | None | Support |
| Cable / connector note | 1.25 mm 10 pins connector; length 37 cm | 1.25 mm 10 pins connector; length 37 cm | 1.25 pitch 4 pins socket; length 37 cm |
| Operating temperature | -40 °C to +85 °C | -40 °C to +85 °C | -40 °C to +85 °C |
| Storage temperature | -40 °C to +105 °C | -40 °C to +105 °C | -40 °C to +105 °C |
| Indicator light | FIX LED ×2 red light is always on when powered on; RGB LED ×1 color light | FIX LED ×2 red light is always on when powered on; RGB LED ×1 color light | FIX LED ×1 red light stays on when powered; CAN LED ×1 green light flashes during CAN communication; SAFE LED ×1 purple light for safety switch; RGB LED ×1 color light (effective when MCU is present) |
BK-575H Detailed Parameters (additional table)
| Chip | M9140-KB |
| Operating mode | GPS, GLONASS, BDS, GALILEO |
| Auxiliary system | SBAS, QZSS |
| Channel | 92 channel |
| Sensitivity | Track -167 dBm; Recapture -160 dBm; Cold start -148 dBm; Hot start -159 dBm |
| Horizontal accuracy | 1.5 m CEP |
| Speed accuracy | 0.05 m/s |
| Dynamic heading angle accuracy | 0.3 deg |
| 1PPS time accuracy | RMS 30 ns; 99% 60 ns |
| Start time | Cold start 24 s; Assisted start 2 s; Hot start 2 s |
| Baud rate | 4800 bps – 921600 bps; default 38400 bps |
| Output level | CAN level |
| Output protocol | NMEA, UBX |
| NMEA statement | RMC, VTG, GGA, GSA, GSV, GLL |
| Update frequency | 0.25Hz–25Hz; default 1Hz |
| FLASH | With FLASH; configuration can be changed and power will not be lost |
| Second pulse | Configurable from 0.25 Hz to 10 MHz; default period 1 s; high level lasts 100 ms |
| Work restrictions | High 80,000 m; Speed 500 m/s; Acceleration due to gravity ≤4 g |
| MCU | ARM, Cortex-M4, STM32F412RET6; FLASH 512KB; SRAM 256KB; 100MHZ; LQFP-64 (10×10) |
| Connector | 1.25 pitch 4PIN socket |
| Compass | RM3100 |
| Barometer | MS5611-01BA03 |
| 6-axis attitude sensor | N/A |
| Switch | Support |
| Buzzer | Support |
| SD Card | N/A |
| USB | N/A |
| Interface | CAN2.0 A/B, Max 1 Mbit/s; USB2.0, full-speed |
| LED | FIX: FIX LED ×1 red light solid on when powered on; CAN: CAN LED ×1 flashes when CAN communicates; SAFETY: SAFE LED ×1 purple light safety switch light; RGB: RGB LED ×1 color light (valid with MCU) |
| Power consumption | DC 5.0V; 120 mA |
| Physical | Size Φ59.2 × 17.8 mm; Weight 33 g |
| Environment | Operating temperature -40 °C to +85 °C; Storage temperature -40 °C to +105 °C |
BK-575H 4-Pin (MCU CAN) Pin Description
| Interface | Pin | Name | I/O | Description | Interface note |
|---|---|---|---|---|---|
| MCU CAN | 1 | 5V | I | MCU programming power supply | Default 5.0V |
| MCU CAN | 2 | CANH | I | CANH communication interface | MCU CAN communication interface |
| MCU CAN | 3 | CANL | I | CANL communication interface | MCU CAN communication interface |
| MCU CAN | 4 | GND | G | Ground | Ground |
Applications
- FPV
- Fixed-wing UAVs
- Flight-controlled drones
- Aerial photography UAV positioning
What's Included
- BK-575H Series Receiver ×1 (when BK-575H single package is selected)
- 1.25 pitch 4-PIN socket cable ×1 (line length: 60 cm) (when BK-575H single package is selected)
Details

Choose between BE-575, BK-575, and BK-575H based on supported constellations, output level (TTL or CAN), and update rate requirements.

Designed for reliable UAV navigation, the BK series receiver focuses on fast satellite acquisition and stable positioning for flight controllers.

Multi-constellation reception helps improve lock performance, while the onboard RM3100 compass supports heading data for compatible setups.

Integrated status indicators and optional functions—such as safety switch, buzzer, compass, and barometer—vary by model and simplify installation.

NMEA and UBX protocol support makes it easy to integrate with Pixhawk, PX4, and APM configurations, with visual and audible status feedback.


Performance test tables summarize sensitivity, accuracy, startup time, and power draw to help compare variants in real flight-controller builds.

Wiring diagrams cover basic connections for configuration and integration, and the size reference helps plan mounting on the airframe.


Pin definitions and mechanical drawings support correct wiring and enclosure fit before installation.



Package includes the receiver and a 4‑pin cable (60 cm); confirm the exact model variant when ordering.
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