RadioMaster XR4 Gemini Xrossband Dual-Band ELRS Receiver

Receiver Overview:

The RadioMaster XR4 Gemini Xrossband Dual-Band ELRS Receiver delivers next-level connectivity and reliability for demanding pilots. Designed with true diversity dual-band capability, it supports both 2.4GHz and Sub-G 900MHz bands using the advanced ExpressLRS Gemini Xrossband (Gem-X) protocol. Compact, lightweight, and equipped with dual T-type antennas, the XR4 provides outstanding reception stability while maintaining a small footprint that fits easily into drones and fixed-wing models.

About the Receiver

Unmatched Dual-Band Performance

Built with two independent LR1121 RF transceivers, the XR4 ensures unmatched versatility by allowing you to operate in single-frequency Gemini mode or dual-band Xrossband mode. Its powerful ESP32D4 MCU delivers ultra-low latency and refresh rates up to K1000Hz, making it ideal for both long-range and high-performance applications. The integrated Wi-Fi module provides hassle-free firmware updates and configuration via a WebUI, ensuring your setup stays future-ready and easy to manage. With robust construction and advanced features, the XR4 offers rock-solid RF links in even the most challenging environments.

Features:

• True diversity dual-band design
• Supports ExpressLRS 2.4GHz and Sub-G 900MHz
• Compatible with Gemini and Gemini Xrossband (Gem-X)
• Dual Semtech LR1121 RF transceivers
• ESP32D4 high-performance MCU
• Integrated Wi-Fi module for easy updates
• Secondary UART port for advanced use
• Castled pads for simple soldering
• Compact and lightweight design

Includes:

• (1) XR4 Gemini Xrossband Dual-Band Receiver
• (2) Dual-Band T-Antenna
• (1) CRSF Wire
• (3) Heat-Shrinkable Tube
• (1) Manual Card

Specifications:

Manuals:

User Manual

This product was added to our catalog on September 10, 2025