RadioMaster XR3 Nano Multi-Frequency Antenna Diversity ExpressLRS Receiver (3 Types)

Description

The RadioMaster XR3 Nano Multi-Frequency Antenna Diversity ExpressLRS 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

Specifications:

• 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.

Weight:

Dimensions:

Package Includes:

• 1 x RadioMaster XR3 Nano Multi-Frequency Antenna Diversity ExpressLRS Receiver