Beitian BG-550/358/540/348 Series 4G RTK GNSS Board UM982/UM980/ZED-F9P CORS, Type-C, TF

Overview

This Beitian built-in 4G RTK GNSS board integrates an RTK GNSS positioning/orientation module (UM982/UM980 or ZED-F9P, depending on model) plus a 4G communication module, and supports CORS connection workflows for high-precision GNSS positioning applications. Available Shopify options include: BG-550, BG-358, BG-540, BG-348, BG-540U, BG-348U, BG-540M, BG-348M.

Key Features

• Multi-constellation GNSS support (model-dependent), including BDS/GPS/GLONASS/Galileo/QZSS.
• Built-in 4G module (China Unicom / China Mobile / China Telecom 4G/3G/2G as labeled).
• Type-C interface supports configuration.
• TF (microSD) storage support for real-time data storage; TF hot swap supported; TF capacity <= 32G; FAT32 file system.
• LED status indicators: SAT, REC, RTK, NET (as labeled).
• IPEX antenna interface (as labeled).
• 1.25 pitch 6-pin seat/socket with lock (as labeled) for power and UART.
• Development materials are provided to assist use and secondary development (as labeled).

Specifications (Model Comparison)

Specifications (RTK GNSS Module Parameters Shown)

Interfaces & Pin Definition (1.25 Pitch 6-Pin)

TF card is used for real-time data storage, supports TF card hot swap, supports <= 32G capacity, FAT32 file system. Type-C: support configuration.

Indicator LEDs (As Labeled)

• STA LED: Green steady on = power supply is normal; no green light = power supply is faulty.
• REC LED: Green light flashes = storing; no green light = no TF card or memory card is faulty.
• RTK LED: flashes slowly = GPS is normal and positioning is invalid; flashes quickly = single point positioning mode; always on = RTK positioning mode; no display = GPS failure.
• NET LED: flashes slowly = SIM card is normal; always on = RTK mode; no display = SIM card is abnormal; flashes quickly = power on detection status.

Connection Methods (As Shown)

• 4G connection method: Host Station (Base) (built in 4G module) connects to a computer for base station output data testing; diagram shows power supply source: 5V > 1A.
• CORS connection method: Slave Station (Rover) (built in 4G module) connects toward a CORS base station; diagram shows power supply source: 5V > 1A.

Mechanical Dimensions (Drawing Values)

• Board outline: 50.00 +/- 0.2
• Inner/reference dimension: 44.40 +/- 0.1
• Corner radius: R2.80
• Mounting holes: 4 - O3.10
• Additional drawing callouts shown: 25.00, 21.00, 16.00, 29.00, 5.8, 5.60 +/- 0.2, 3.80, 2.20, 2.60, 1.20, 7.62, 2.54, 1.47, 6.87

Applications

Multi-domain and multi-application use cases shown include driving test and training, drones, agricultural machinery navigation, robots, and intelligent driving systems requiring high-precision positioning.

For selection guidance between BG-550/BG-358/BG-540/BG-348 and related variants, contact support@rcdrone.top or visit https://rcdrone.top/.

Details

Compare the BG-550/358/540/348 series by GNSS chip, supported bands, RTK performance, interfaces, and board size.

Multiple board variants are available, combining an RTK GNSS module with onboard 4G connectivity for CORS workflows.

Pinout and interfaces for integration: locked 6‑pin power/UART header, Type‑C for configuration, and TF card logging.

Use the dimension drawing for enclosure planning and the antenna orientation layout for dual-antenna setups.

Connection diagrams outline typical setups for 4G RTK operation and CORS base-station correction links.

Hardware callouts identify key parts such as the IPEX antenna interface, status LEDs, TF slot, and onboard 4G module.

Designed for complex RF environments and adaptable to applications like robotics, navigation, and precision positioning projects.

Front/back views highlight connector placement and component layout before installation.