RadioMaster XR4 Gemini Xrossband 2.4GHz/Sub-G 900MHz Dual-Band ExpressLRS ELRS True Diversity Receiver for TX16S Boxer Pocket GX12 Radios Transmitter
Direct purchase from the factory 
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The XR4 Receiver is a cutting-edge true diversity dual-band receiver featuring dual LR1121 RF transceivers, designed to leverage the advanced ExpressLRS Gemini Xrossband protocol (Gem-X). It seamlessly supports both the 2.4GHz and Sub-G 900MHz bands, and its dual T-type antennas provide superior reception sensitivity and connection stability for optimal performance.nnBuilt with two independent RF circuits, the XR4 offers versatile operation modes, allowing you to switch between Gemini single-frequency or Xrossband dual-band modes, and can be tailored to your specific needs. The integrated Wi-Fi module simplifies firmware updates and configuration via a user-friendly WebUI on your PC or mobile device.nnWith ultra-low latency and a high refresh rate, the XR4 excels in delivering a stable, rock-solid RF link, even in demanding long-range or challenging environments. Its compact, lightweight design is perfect for drones, and fixed-wing models, offering reliable connectivity in critical situations where every signal matters. The XR4 ensures you maintain the most secure and robust RF link available, providing unbeatable reliability in the most demanding conditions.n
Brand: RadioMaster
Item: XR4 Gemini Xrossband Receiver
MCU: ESP32D4
RF Chip: Semtech LR1121
RF connector: IPEX-1 X 2
Antenna: Dual-Band T Antenna u00d7 2 (Included)
Frequency Range: 2.4GHz / Sub-G 900MHz
Telemetry Power: 100mW
Maximum Receive Refresh Rate: DK500Hz / K1000Hz
Minimum receiver refresh rate: 50Hz
Working voltage: DC 5.0 - 12.6V
Weight: 1.7g (without antenna)
Dimension: 22mm*18mm*4mm
Firmware Version: ExpressLRS v3.5.1 pre-installed
FW Target: RadioMaster XR4 2.4/900 Gemini RX
Bus interface 1: CRSF
Bus interface 2: UART
Feature:
* True Diversity & Dual-Band
* Unmatched reliability with ExpressLRS Gemini Xrossband
* Compatible with ExpressLRS 2.4GHz, Sub-G 900MHz, Gemini & Gemini Xrossband (Gem-X)
* ESP32D4 high-performance MCU
* Twin Semtech LR1121 Transceiver
* Secondary UART port for advanced functionality
* Castled pads for easy solderingn
Package included:
1 * XR4 Gemini Xrossband Dual-Band Receivern2 * Dual-Band T-Antennan1 * CRSF Wiren3 * Heat-Shrinkable Tuben1 * Manual Card
