Radiomaster XR4 Gemini Xrossband Dual-Band ExpressLRS Receiver

Radiomaster XR4 receiver – Gemini Xrossband Dual-Band ExpressLRS Performance

The Radiomaster XR4 receiver is a next-generation dual-band ExpressLRS solution engineered for pilots who demand maximum RF reliability in a compact and lightweight design. Supporting both 2.4GHz and Sub-G 900MHz frequencies through dual Semtech LR1121 RF chips, this receiver delivers exceptional link stability and extended range. Therefore, it is an ideal choice for FPV drones and fixed-wing aircraft operating in challenging RF environments.

Radiomaster XR4 receiver

Dual-Band Gemini Xrossband Technology

Equipped with ExpressLRS Gemini and Gemini Xrossband (Gem-X) protocol support, the XR4 receiver transmits and receives across dual frequency bands simultaneously. Additionally, true diversity operation ensures the strongest possible signal is always selected. Beyond this, dual-band transmission significantly reduces packet loss and interference. Consequently, pilots experience consistent control and dependable telemetry even in congested RF conditions.

Ultra-Low Latency & High Refresh Rates

Integrated with ExpressLRS v3.5.1, the Radiomaster XR4 receiver supports refresh rates up to 1000Hz for ultra-responsive control. Furthermore, the ESP32D4 MCU with built-in Wi-Fi enables quick configuration through a WebUI without additional hardware. This combination of features makes the receiver perfectly suited for high-performance FPV flying and precision fixed-wing operations.

Key Features at a Glance

• Dual Semtech LR1121 RF transceivers

• Gemini & Gemini Xrossband ExpressLRS support

• True diversity for stable RF links

• Up to 1000Hz refresh rate with ultra-low latency

• ESP32D4 MCU with built-in Wi-Fi WebUI

• CRSF and UART interfaces

• Ultra-lightweight 1.7g design

Ideal Applications

• FPV racing and freestyle drones

• Long-range FPV drone builds

• Fixed-wing and RC aircraft

• High-interference RF environments

• Precision telemetry and control setups

Technical Overview

Why Choose This Dual-Band ExpressLRS Receiver?

This receiver delivers outstanding RF stability, ultra-low latency, and flexible integration for modern FPV and RC platforms. Furthermore, its compact form factor makes it easy to install in tight builds. In addition, dual-band Gemini Xrossband technology enhances reliability across varied environments. As a result, pilots gain confidence in both short-range and long-range flights. Moreover, built-in Wi-Fi configuration simplifies setup and tuning. Consequently, it stands out as a premium ExpressLRS receiver for demanding pilots.

🔗 Useful Reference
Visit the official RadioMaster website for ExpressLRS updates and product documentation.

🔗 Related Mall of Aviation Links
Explore more FPV Receivers at Mall of Aviation