The XR3 Receiver is a versatile, ultra-compact ExpressLRS receiver, measuring just 20 x 15mm. Powered by the advanced third-generation Semtech LR1121 transceiver, the XR3 operates seamlessly on 2.4GHz OR Sub-G 900MHz bands. Whether you’re flying on 2.4GHz or 900MHz, the XR3 delivers exceptional range and sensitivity in a small, lightweight package — perfect for any build. With the reliability of ExpressLRS, you can focus on flying without worrying about link quality.
Designed for convenience, the XR3 features built-in Wi-Fi for effortless configuration and firmware updates. Access and manage settings through an intuitive WebUI on your PC or mobile device with ease.
For more details and support, visit expresslrs.org.
Features
- Antenna Diversity for improved signal stability and range
- ExpressLRS 2.4GHz or Sub-G 900MHz
- ESP32C3 high-performance MCU
- Semtech LR1121 Transceiver
- Additional UART port
- Secondary port for advanced functionality
- Castled pads for easy soldering
Specification
- Item: XR3 Nano Multi-Frequency Antenna Diversity ExpressLRS Receiver
- Type: ISM2.4, FCC915
- MCU: ESP32C3
- RF Chip: LR1121
- RF connector: IPEX-1 X 2
- Antenna: 2x T-Antenna (Either 2.4GHz, 900Mhz or Dual-band depending on selected package)
- Frequency Range: 2.4GHz / Sub-G 900MHz
- Telemetry Power: 100mw
- Maximum receive refresh rate: DK500Hz / K1000Hz
- Minimum receiver refresh rate: 25Hz
- Working voltage: DC 4.5 – 8.4V
- Weight: 1.3g (without antenna)
- Dimension: 22mm * 15mm * 4mm
- Firmware Version: ExpressLRS v3.5.1 pre-installed
- FW Target: RadioMaster XR3 2.4/900 Diversity RX
- Bus interface 1: CRSF
- Bus interface 2: UART
Antenna Diversity
The XR3 receiver features a Skyworks RFX2401C providing an LNA for improved receiver performance, a PA providing up to 100mW of telemetry performance and antenna switching for antenna diversity.
Tailored to Your Needs
The XR3 Receiver is available in three configurations, ensuring you have the flexibility to meet your exact requirements: Choose between 2.4GHz, Sub-G 900MHz, or a Dual-Band antenna that allows switching between 2.4Ghz and 900Mhz without an antenna change! All antenna types are available as optional accessories so you can change frequency at a later stage without needing to purchase a new receiver!
Weight
Dimensions
Download
Package Includes
- 1 * XR3 Nano Multi-Frequency Antenna Diversity ExpressLRS Receiver
- 2 * T Antenna (Either 2.4GHz, 900Mhz or Dual-band depending on selected package)
- 1 * CRSF Wire
- 3 * Heat-Shrinkable Tube
- 1 * Manual Card
Radiomaster is proud to be an EdgeTX Gold Partner and to have played a pivotal role in the inception of the EdgeTX project. Our commitment goes far beyond just producing radios that run on EdgeTX; we are actively collaborating with the EdgeTX team to drive innovation and help shape the future of EdgeTX based technology.
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