RadioMaster XR3 Nano Multi-Frequency 868/915MHz + 2.4GHz Diversity FPV Receiver

Introduction

The RadioMaster XR3 Nano is a versatile, ultra-compact ExpressLRS receiver designed for FPV and UAV applications. Measuring just 20x15mm and weighing a mere 1.3g, it's ideal for builds where space and weight are at a premium. Powered by the third-generation Semtech LR1121 transceiver, it operates seamlessly across 2.4GHz and 868/915MHz frequency bands, delivering superior range and sensitivity without compromising on size. Experience the reliability of ExpressLRS and fly with confidence, knowing your connection is solid.

Key Advantages

• Exceptional Range and Sensitivity: Utilizes Semtech LR1121 for optimal performance.
• Dual-Frequency Operation: Supports both 2.4GHz and 868/915MHz Sub-G bands.
• Antenna Diversity: Improves signal stability and reception quality.
• Compact and Lightweight: Tiny 20x15mm dimensions and 1.3g weight are perfect for small builds.
• Integrated Wi-Fi: Enables easy setup and firmware updates via WebUI.
• High-Performance MCU: Equipped with the powerful ESP32C3 microcontroller.
• Enhanced Telemetry: Features a PA for up to 100mW telemetry output.
• Reliable ExpressLRS Protocol: Ensures a stable and robust connection for critical flights.

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 T-Antenna Dual-band
• Frequency Range: Sub-G 868/915 MHz / 2.4GHz
• 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 2.4/900 Diversity RX
• Bus Interface 1: CRSF
• Bus Interface 2: UART

Applications

This receiver is ideal for a wide range of FPV and UAV applications, including freestyle, racing drones, long-range exploration, cinematic FPV, and any custom drone build requiring a compact, high-performance, and reliable radio link. Its dual-frequency capability makes it suitable for various environments and regulatory regions.

Compatibility

The XR3 Nano receiver is compatible with flight controllers supporting CRSF and UART interfaces. It operates on a wide voltage range (DC 4.5 - 8.4V) and comes with included CRSF cables for easy integration.

FAQ

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

The XR3 Nano is exceptionally compact, measuring just 20x15mm and weighing only 1.3g without antennas. This makes it perfect for minimalist builds where space and weight are critical, such as micro FPV drones or toothpick builds, without compromising on performance.

Can I use the RadioMaster XR3 Nano receiver for long-range FPV flights?

Yes, the XR3 Nano utilizes the ExpressLRS protocol and operates on both 2.4GHz and 868/915MHz bands, offering excellent range and penetration. Combined with its antenna diversity, it provides a stable and reliable connection for extended flights.

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

Configuration and firmware updates are made easy thanks to the built-in Wi-Fi. You can access the intuitive WebUI from your computer or mobile device to manage settings and update the firmware, ensuring your receiver is always running the latest version.

What is antenna diversity on the RadioMaster XR3 Nano receiver?

Antenna diversity means the receiver uses two separate antennas to pick up signals. This technology improves signal stability and reception quality by selecting the best signal path, significantly reducing signal loss and improving overall flight reliability.

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

You can order the RadioMaster XR3 Nano receiver directly from HTDRONE. We offer fast shipping within Poland and reliable worldwide delivery via DHL, ensuring you get your FPV parts quickly.