Overview

The SinoGNSS U70 is an embedded UHF radio data link module for GNSS correction-data transmission. TOXU supplies it under product model TX-U70 for OEM base stations, rover receivers and custom positioning equipment.

Operating within 410–470 MHz, the module supports transmit and receive functions in half-duplex operation. A compatible radio pair can carry correction data from a reference station to a rover through a local wireless link.

The OEM package allows designers to integrate the radio with their own receiver PCB, regulated power supply and antenna installation. Link performance depends on the radio configuration, antenna system, terrain and surrounding interference.

Key Features

UHF Correction-Data Link

Use the radio to transport correction messages generated by the GNSS base station. The rover-side radio passes the received data to the positioning receiver.

Transmit and Receive Operation

The module supports both radio roles. Configure each unit for the intended base or rover installation and match the settings across the link.

Selectable Transmit Power

The available power settings allow engineers to assess link margin, supply demand and thermal conditions for their installation.

LVCMOS Host Interfaces

Connect the module to compatible embedded electronics using its serial interfaces. Match host baud rate, data flow and buffering to the correction-message stream.

External UHF Antenna Connection

The miniature RF connector supports a cable connection to an external antenna. Choose the antenna frequency coverage, mounting position and feed cable together when developing the enclosure.

Technical Specifications

Dimensions and Hardware Structure

The U70 measures 30 × 30 × 3 mm including its connector. The RF connection is located at a corner of the shielded module. Use the manufacturer's mechanical drawing and pin definition when developing the carrier PCB, allowing space for the mating RF cable and its bend radius.

Applications

RTK Reference Stations

Integrate a transmitting radio into a base station to distribute GNSS correction messages over a local UHF link.

Surveying Rover Receivers

Receive corrections from a compatible base radio and forward them to the rover's GNSS engine.

Agricultural Guidance Equipment

Develop a local correction link between a farm reference station and compatible machine-mounted positioning hardware.

Robotics and Machine Positioning

Evaluate radio delivery of correction data for outdoor equipment using a matched GNSS receiver and antenna system.

System Integration

GNSS base receiver → Transmitting radio → UHF link → Receiving radio → GNSS rover receiver

Connect the base receiver's correction-data output to the transmitting module. Configure the receiving unit with compatible frequency, protocol and air-link settings, then route its output to the rover receiver.

Size the supply and decoupling circuit for transmit operation. During integration, check correction-message throughput, radio reception and rover solution status using the intended antennas and installation layout.

Complete RF / GNSS Hardware Solution Support

TOXU can help select the UHF antenna, miniature coaxial cable and external RF connector for the radio installation. Related GNSS receiver hardware and GNSS antennas can be reviewed alongside the correction-data link.

Why Choose TOXU

Discuss the receiver, radio link and antenna installation together when specifying an OEM system. TOXU supports project-specific RF cable assemblies and PCBA integration requirements for evaluation and repeat orders.

About TOXU

TOXU Tech supplies GNSS positioning hardware, communication antennas, RF connectors and cable assemblies to equipment manufacturers and system integrators.

TOXU also provides PCBA manufacturing and OEM / ODM hardware integration services for RF and GNSS projects.

FAQ

What role does U70 play in an RTK system?

It transports correction data over a radio link. The GNSS receiver uses the delivered corrections to calculate its position.

Can the module transmit and receive?

Yes. U70 supports transmit and receive functions in half-duplex operation.

How do I match the base and rover radios?

Match the frequency, radio protocol and relevant air-link parameters. Confirm that both firmware configurations support the selected settings.

Which antenna should be used?

Select a UHF antenna matched to the configured operating frequency and installation. Check the RF cable loss, connector mating and antenna placement.

What determines communication distance?

Distance depends on antenna height and characteristics, terrain, obstructions, transmit power, interference and radio settings. Evaluate the link under the project's expected conditions.

Can U70 communicate with another manufacturer's radio?

Provide the other radio's model, protocol and configuration for review. Interoperability depends on compatible protocols, firmware and operating parameters.