RadioMaster XR3 Nano Multi-Frequency 2.4GHz Diversity FPV Receiver

Introduction

The RadioMaster XR3 Nano is a state-of-the-art, ultra-compact ExpressLRS receiver designed for the demanding FPV and UAV community. Measuring just 20x15mm, it's engineered to fit seamlessly into any drone build without adding significant weight. Powered by the advanced third-generation Semtech LR1121 transceiver, it operates on the 2.4GHz frequency band, delivering exceptional range and sensitivity. Experience unparalleled connection reliability, allowing you to focus purely on your flight performance.

Key advantages

• Ultra-compact and lightweight design, perfect for small FPV drones.
• Advanced Semtech LR1121 transceiver for superior 2.4GHz signal reception.
• ExpressLRS technology ensures robust and reliable control link.
• Antenna diversity provides improved signal stability and extended range.
• Integrated Wi-Fi for easy configuration and firmware updates via WebUI.
• High-performance ESP32C3 microcontroller for fast processing.
• Supports high receiver refresh rates for responsive flight control.
• Includes necessary accessories for straightforward installation.

Technical specifications

• Product: XR3 Nano Multi-Frequency Antenna Diversity ExpressLRS Receiver
• Type: ISM2.4, FCC915
• Microcontroller: ESP32C3
• RF Chip: LR1121
• RF Connector: IPEX-1 x 2
• Antenna: 2x 2.4 GHz T-antenna
• Frequency Range: 2.4 GHz
• Telemetry Power: 100 mW
• Max. Receiver Refresh Rate: DK500 Hz / K1000 Hz
• Min. Receiver Refresh Rate: 25 Hz
• Operating Voltage: DC 4.5 - 8.4 V
• Weight: 1.3 g (without antenna)
• Dimensions: 22 x 15 x 4 mm
• Firmware Version: ExpressLRS v3.5.1 pre-installed
• FW Target: RadioMaster XR3 2.4
• Bus Interface 1: CRSF
• Bus Interface 2: UART

Applications

The RadioMaster XR3 Nano receiver is ideal for a wide range of FPV applications, including freestyle flying, racing drones, long-range exploration, cinematic FPV, and custom UAV projects. Its small size and light weight make it suitable for micro FPV quads, toothpick builds, and any aircraft where space is at a premium.

Compatibility

The XR3 Nano utilizes the CRSF and UART bus interfaces, ensuring broad compatibility with most modern FPV flight controllers and radio transmitters supporting these protocols. It operates on a standard DC 4.5-8.4V input voltage.

FAQ

What makes the RadioMaster XR3 Nano receiver ideal for small FPV drones?

The RadioMaster XR3 Nano is exceptionally suited for small FPV drones due to its ultra-compact dimensions (20x15mm) and minimal weight (1.3g without antenna). This allows for integration into builds where space and weight are critical constraints, without compromising performance.

What is the benefit of antenna diversity on the XR3 Nano receiver?

Antenna diversity on the XR3 Nano receiver uses two antennas to receive signals, significantly improving signal stability and extending the effective control range. This helps to mitigate signal loss and maintain a reliable connection even in challenging flight environments.

How do I configure and update the RadioMaster XR3 Nano receiver?

Configuration and firmware updates for the RadioMaster XR3 Nano are made easy thanks to its integrated Wi-Fi capability. You can access the intuitive WebUI from your computer or mobile device to manage settings and keep the firmware up-to-date.

What are the key technical specifications of the RadioMaster XR3 Nano?

The XR3 Nano features an ESP32C3 microcontroller, Semtech LR1121 RF chip, operates on 2.4GHz, and supports telemetry up to 100mW. It offers high refresh rates (up to 1000Hz), CRSF and UART interfaces, and runs ExpressLRS v3.5.1 firmware.

Where can I buy the RadioMaster XR3 Nano receiver with fast delivery?

You can buy the RadioMaster XR3 Nano receiver at HTDRONE, our specialized FPV drone parts store based in Poland. We offer fast and reliable international delivery via DHL, ensuring you receive your order promptly.