RadioMaster XR4 Gemini Xrossband Dual-Band ExpressLRS Receiver

£34.99 Inc. VAT

Compatible with ExpressLRS 2.4GHz, Sub-G 900MHz, Gemini & Gemini Xrossband (Gem-X).

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Description

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Introducing the XR4 XrossBand Receiver – The Pinnacle of compact Dual-Band Performance

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.

Built 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.

With 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.

For more details and support, visit expresslrs.org.

Features

  • 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 soldering

Associated Products

RadioMaster XR4 Info ARadioMaster XR4 Info BRadioMaster XR4 Info CRadioMaster XR4 Info DRadioMaster XR4 Info ERadioMaster XR4 Info FRadioMaster XR4 Info GRadioMaster XR4 Info H XR4 SizeXR4 Weight

Specification
  • Item: XR4 Gemini Xrossband Dual-Band Receiver
  • MCU: ESP32D4
  • RF Chip: LR1121 x 2
  • RF connector:  IPEX-1 X 2
  • Antenna: Dual-Band T Antenna x 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

Included:

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

SHIPPING & DELIVERY

We are based in the UK, but ship to most worldwide destinations. Postage rates are calculated by the size/weight and shipment location. We process orders Monday to Friday and pride ourselves on our quick turnaround of orders - most UK orders will arrive the next day.

We are partnered with several delivery companies including Royal Mail, DHL, UPS and Parcel Force. If you have a special delivery requirement or would like to arrange a shop collection please contact us.

A confirmation email will be sent when your order has been dispatched. If you wish to change your order, please contact us promptly, as we won't be able to make amendments once the order has been shipped.

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Shipping to the UK

  • Order before 4PM for same day dispatch with Royal Mail, 2PM for next day delivery with DHL and 1PM for next day delivery with APC.
  • We offer FREE Shipping on UK orders over £99, weighing less than 1kg.
  • The courier options deliver Monday to Friday, Royal Mail delivers to residential addresses on Monday to Saturday.

For small low value orders our cheapest delivery service is Royal Mail First Class. For a guaranteed next day delivery we recommend Royal Mail Special Delivery or one of our courier delivery options.

International Postage

  • Order before 4PM for same day dispatch with Royal Mail.
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  • DHL Express offers NEXT DAY delivery to most European destinations and a very fast delivery for countries further afield, generally 2-3 days.

Orders shipped outside the EU may be subject to customs charges. These charges are additional to any delivery costs and will need to be paid by the recipient.