RadioMaster XR3 Nano Multi-Frequency 868/915MHz Diversity ExpressLRS Receiver

Introduction

The RadioMaster XR3 Nano is a highly versatile and ultra-compact ExpressLRS receiver designed for modern FPV and UAV applications. Measuring just 20 x 15 mm, it's engineered to fit seamlessly into any drone build without compromising performance. Powered by the third-generation Semtech LR1121 transceiver, it operates on the 868/915 MHz frequency bands, offering superior range and sensitivity in a small, lightweight package. Trust in the reliability of ExpressLRS to keep your connection solid, allowing you to focus on your flight.

Key Advantages

• Exceptional Range & Sensitivity: Utilizes the Semtech LR1121 transceiver for robust long-range performance.
• Antenna Diversity: Features dual antennas and switching for improved signal stability and reduced dropouts.
• Ultra-Compact & Lightweight: Tiny dimensions (20x15mm) and only 1.3g weight make it ideal for small builds.
• Easy Configuration: Built-in Wi-Fi enables simple setup and firmware updates via a user-friendly WebUI.
• High-Performance MCU: Powered by the ESP32C3 microcontroller for efficient operation.
• Enhanced Receiver Performance: Includes Skyworks RFX2401C for LNA, PA (up to 100mW telemetry), and antenna switching.
• Flexible Connectivity: Offers both CRSF and UART bus interfaces for versatile integration.
• Pre-installed Firmware: Comes with ExpressLRS v3.5.1 firmware for immediate use.

Technical Specifications

• Product: XR3 Nano Multi-Frequency Antenna Diversity ExpressLRS Receiver
• Frequency Bands: Sub-G 868/915 MHz
• Type: ISM2.4, FCC915
• Microcontroller: ESP32C3
• RF Chip: Semtech LR1121
• RF Connector: IPEX-1 x 2
• Antennas: 2x T-type 868/915 MHz antennas included
• 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 antennas)
• Dimensions: 22 x 15 x 4 mm
• Firmware Version: ExpressLRS v3.5.1 pre-installed
• FW Target: RadioMaster XR3 868/915 MHz Diversity RX
• Bus Interface 1: CRSF
• Bus Interface 2: UART

Applications

This receiver is perfectly suited for a wide range of FPV applications, including freestyle drones, racing quads, long-range exploration aircraft, and custom UAV builds. Its compact size and reliable signal make it an excellent choice for both beginners and experienced pilots seeking top-tier performance.

Compatibility

The XR3 Nano receiver is compatible with flight controllers supporting CRSF or UART interfaces. It operates within a voltage range of DC 4.5-8.4V. Ensure your radio transmitter is compatible with ExpressLRS firmware and the 868/915MHz frequency bands.

FAQ

What is the RadioMaster XR3 Nano receiver and its main features?

The RadioMaster XR3 Nano is an ultra-compact ExpressLRS receiver operating on 868/915MHz frequencies. Its key features include antenna diversity for improved signal stability, built-in Wi-Fi for easy configuration via WebUI, and a lightweight design, making it ideal for various FPV builds.

What are the benefits of antenna diversity on the XR3 Nano receiver?

Antenna diversity utilizes two antennas and intelligent switching to maintain the strongest possible signal link. This significantly reduces signal loss and improves overall flight reliability, especially in challenging environments or at longer distances.

How do I configure the RadioMaster XR3 Nano receiver?

Configuration is made easy thanks to the built-in Wi-Fi. You can access the receiver's WebUI directly from your computer or mobile device to manage settings and update firmware without needing to connect cables.

What is the operating voltage and weight of the XR3 Nano receiver?

The XR3 Nano receiver operates on a DC voltage range of 4.5 to 8.4V. It is extremely lightweight, weighing only 1.3 grams without the antennas, making it suitable for even the smallest and lightest drone builds.

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

You can buy the RadioMaster XR3 Nano receiver at HTDRONE. We offer fast shipping within Poland and reliable worldwide delivery via DHL, ensuring you receive your FPV components quickly.