Beitian BK-609U USB GNSS Mouse Receiver – NMEA-0183 for GIS

Overview

The Beitian BK-609U is a USB interface GNSS mouse receiver designed to output positioning data to compatible equipment via a USB serial interface. It supports multi-constellation positioning (GPS/BeiDou/GLONASS/Galileo) and provides NMEA-0183 data output for applications such as car/boat navigation, industrial positioning, survey tasks, and GIS mapping. The product is listed as compatible with BU-353S4.

Key Features

Multi-constellation GNSS receiving format: GPS, GLONASS, BDS, GALILEO; auxiliary systems: SBAS, QZSS
USB 2.0 male connector, USB-level output (PL2303SA chip TTL to USB driver stated)
Output protocols: NMEA-0183; supported data protocol listed as NMEA and UBX
Update rate: 0.25Hz–25Hz (default 1Hz)
Built-in FLASH (configuration can be changed; power loss will not lose configuration)
Magnetic bottom for mounting
LED status indicators (TX/data and PPS indicators are specified for this series)

Specifications (BK-609U)

Chipset	M9140-KB
Frequency bands / systems	GPS L1 C/A; QZSS L1 C/A/S; GLONASS L1OF; BDS B1I; Galileo E1B/C; SBAS L1 C/A (WAAS, EGNOS, MSAS, GAGAN)
Receiving format	GPS, GLONASS, BDS, GALILEO
Auxiliary system	SBAS, QZSS
Channels	92 searching channel
Sensitivity (tracking)	-167 dBm
Sensitivity (reacquisition / recapture)	-160 dBm
Sensitivity (cold start)	-148 dBm
Sensitivity (hot/warm start)	-159 dBm
Position horizontal	1.5 m CEP
Velocity accuracy	0.05 m/s
Dynamic heading accuracy	0.3 deg
1PPS time accuracy	RMS 30 ns; 99% 60 ns
Acquisition time (cold start)	24 s
Acquisition time (warm start)	2 s
Acquisition time (hot start)	2 s
Assisted start	2 s
Baud rate	4800 bps – 921600 bps (default 115200 bps)
Output level	USB level
Output protocol	NMEA-0183
Data protocol (listed)	NMEA, UBX
NMEA messages (listed)	RMC, VTG, GGA, GSA, GSV, GLL
Update rate	0.25Hz–25Hz (default 1Hz)
Second pulse	0.25 Hz to 10 MHz configurable; default period 1 s; high level lasts for 100 ms
Operational limits (altitude)	80,000 m
Operational limits (velocity)	500 m/s
Operational limits (acceleration)	<= 4 g
Supply voltage (VCC)	DC 3.6 V–5.5 V (typical 5.0 V)
Current	45 mA / 5.0 V
Dimensions	Phi 63.2 x 16.8 mm (structural diagram: Phi 63.20 +/- 0.3; 16.8 +/- 0.3)
Weight	95 g
Connector	USB 2.0 male
Cable length	2 m (structural diagram: 2000 +/- 20)
Mounting	Magnetic bottom
Operating temperature	-40 C to +85 C
Storage temperature	-40 C to +105 C
LED (TX)	Blue light flashes when the power is on, indicating there is a data output
LED (PPS)	Not positioned: the light is not on; after 3D positioning, the light flashes

USB Pin Description

Pin 1	VCC	DC 3.6 V–5.5 V supply input, typical: 5.0 V
Pin 2	D-	USB D-
Pin 3	D+	USB D+
Pin 4	GND	Ground

What's Included

GNSS receiver (1 pc)
Box (1 pc)

Applications

Car navigation
Nautical positioning (boat)
Logistics tracking
Industrial positioning, survey, and GIS mapping

Options

Available model options may include: BV-609N, BV-609D, BV-606U, BV-609DN, BV-609DU, BE-609N, BE-609D, BE-609U, BE-609DN, BE-609DU, BU-609N, BU-609D, BU-609U, BU-609DN, BU-609DU, BK-609N, BK-609D, BK-609U, BK-609DN, BK-609DU.

Support

For selection guidance (interfaces, protocols) or project integration support, contact customer service at https://rcdrone.top/ or support@rcdrone.top.

Details

BK-609U GNSS mouse receiver comparison chart with USB models and key specifications table

Compare interface options and core specifications across Beitian GNSS mouse receiver variants to choose the right USB model for your setup.

Specification comparison table for Beitian GNSS mouse receivers with different cable and connector options

If you’re matching an existing installation, the side-by-side list helps verify connector type, cable style, and output details before ordering.

Customization and development materials graphic for GNSS receiver modules and sample programs

Configuration support and development files help teams integrate NMEA/serial output into GIS, navigation, and tracking workflows.

Beitian BK-609U USB GNSS mouse receiver graphic highlighting multi-constellation support and marine positioning

Multi-constellation GNSS support (GPS/BeiDou/GLONASS/Galileo) improves positioning availability for vehicle and marine navigation.

Connection methods and satellite signal charts for GNSS receiver performance and star search capability

Signal charts and sky maps illustrate satellite tracking performance and acquisition behavior in typical operating conditions.

Basic GNSS positioning workflow and M10050 vs M9140 chipset feature comparison card

A quick overview of how satellite data is received and output to equipment, plus a chipset generation comparison for reference.

NMEA sentence table and LED indicator explanation for GNSS mouse receiver data output and status

Standard NMEA message types are supported for time, location, satellites, and speed—while the LEDs provide clear power and fix feedback.

Sensitivity, accuracy, start time, and power consumption test tables for GNSS receiver performance

Test summaries outline sensitivity, positioning accuracy, time-to-fix, and power consumption for performance evaluation.

BK-609U GNSS mouse receiver dimensions (63.2×16.8 mm) and detailed feature specification table

Dimensions and a detailed spec table make it easier to confirm fit and electrical/output requirements for dashboards, boats, or field kits.

USB GNSS mouse receiver wiring pinout, structural dimensions, and application scenes like tracking and navigation

Pin definitions and mechanical drawings support system integration, with common use cases including logistics tracking and vehicle navigation.

Beitian BK-609U USB GNSS mouse receiver product display with cable and retail box contents list

The package includes the BK-609U USB GNSS mouse receiver and retail box for straightforward plug-and-play setup.

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Beitian BK-609U USB GNSS Mouse Receiver M9140-KB GPS/BeiDou/GLONASS/Galileo NMEA-0183 for GIS Mapping