Description
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.
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 5.0 – 12.6v
- 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.
