Radiomaster XR3 Nano Multi-Frequency Antenna Diversity ExpressLRS Receiver

The XR3 receiver is a versatile, ultra-compact ExpressLRS receiver measuring just 20 x 15 mm. Thanks to the advanced Semtech LR1121 third generation transceivers, the XR3 operates flawlessly in the 2.4GHz OR Sub-G 900MHz bands. It provides exceptional range and sensitivity in a small, lightweight package.

Features:

Antenna Diversity for improved signal stability and range

Support ExpressLRS 2.4GHz or Sub-G 900MHz

High performance microcontroller ESP32C3

Transceiver Semtech LR1121

Additional UART port

Additional port for expanded functionality

Lead pads for easy soldering

Specifications:

Item Name: XR3 Nano Multi-Frequency Antenna Diversity ExpressLRS Receiver

Type: ISM2.4, FCC915

Microcontroller (MCU): ESP32C3

RF Chip: LR1121

RF Connector: IPEX-1 X 2

Antenna: 2x T-antenna (2.4GHz, 900Mhz or dual-band, depends on the selected package)

Frequency range: 2.4GHz/Sub-G 900MHz

Telemetry power: 100mW

Maximum reception refresh rate: DK500Hz/K1000Hz

Minimum reception refresh rate: 25Hz

Operating voltage: DC 4.5 – 8.4V

Weight: 1.3g (without antenna)

Dimensions: 22mm*15mm*4mm

Firmware version: ExpressLRS v3.5.1 (pre-installed)

Firmware target: RadioMaster XR3 2.4/900 Diversity RX

Bus interface 1: CRSF

Bus interface 2: UART

Equipment:

1 x XR3 Nano Multi-Frequency Antenna Diversity ExpressLRS Receiver

2 x T-antennas (2.4GHz, 900Mhz or dual-band, depends on the selected package)

1 x CRSF wire

3 x Heat cleaning tubes

1 x Instruction card