YRRC 3DR 433MHz 1000mW Radio Telemetry Kit from YRRC is a ready-to-use solution for telemetry transmission between an airborne autopilot (APM, Pixhawk, PX4) and a ground station. This kit is compatible with APM, Pixhawk, and PX4 and allows connecting the ground module to a computer, laptop, or tablet via USB (OTG), ensuring full-featured real-time data exchange.

Description and Features

The kit is built on HopeRF HM-TRP radio modules with SiLabs Si1000 RF microcontrollers and operates in the 433 MHz band. The system provides full-duplex communication and MAVLink protocol support, allowing you to receive GPS coordinates, current power voltage, heading, waypoints, artificial horizon, and other flight data directly on the ground station map. Its small size and low weight make the kit ideal for drones, quadcopters, and DIY projects where a reliable wireless serial data interface is required.

Compatibility and Configuration

The SiK firmware includes a bootloader with the ability to update via the serial interface. Updates and configuration are fully supported in APM Mission Planner, and configuration is also possible via the 3DR Radio configurator and AT commands. The interface connects via a standard serial port with 5V TTL-serial level or via FT232 USB serial, ensuring simple and universal connection to various platforms. Adaptive control is supported when used with APM, as well as the ability to control the aircraft via a joystick from a computer.

Key Features

• Very small size and low weight — ideal for mobile unmanned platforms
• 433 MHz band with full FHSS (Frequency Hopping Spread Spectrum) support and adaptive multiplexing (TDM)
• Receiver sensitivity up to -117 dBm
• Output power up to 30 dBm (1000 mW), adjustable within 1–30 dBm
• Transparent data channel and speed up to 250 kbps
• Built-in error correction code (can correct up to 25% of data errors)
• Support for LBT and AFA, duty cycle configuration
• AT commands for radio configuration and RT command for remote part
• Ability to use a bidirectional amplifier to increase range
• Open-source software
• Molex 1.25 mm expansion connectors

Technical Data

• Band: 433 MHz
• Antenna connectors: SMA connectors
• Output power: 1000 mW (30 dBm), adjustable within 1–30 dBm
• Receiver sensitivity: -117 dBm
• Power and status: VDC (from USB or UART connector)
• Consumption during transmission: 600 mA at 30 dBm
• Consumption during reception: 25 mA
• Serial interface: 3.3 V UART
• Connection interface: TTL-serial / FT232 USB serial, microUSB or 4-pin 1.25 mm connector
• Dimensions: 25.5 x 53 x 12 mm (without antenna)
• Weight: 12 g

Package Contents

• 433 MHz Telemetry Transceiver (connection via microUSB or 4-Pin 1.25 mm connector) × 2
• Android OTG adapter cable × 1
• 6-wire Pixhawk connector cable × 1
• 6-to-5-position APM and PX4 connector cable × 1
• Antenna × 2

The YRRC 3DR 433MHz 1000mW Radio Telemetry Kit is an optimal choice for both amateurs and professionals looking for an inexpensive and reliable long-range solution. Thanks to open-source software, MAVLink support, and convenient configuration tools, you get full control over data transmission and the ability to update firmware without unnecessary complications. Using the kit, you can not only receive real-time flight data but also implement your own projects with a wireless serial interface.

Product category: Drones and Quadcopters > Drone Antennas

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