Looking for Radiomaster Xr4 Gemini Receiver? Radiomaster XR4 Gemini Xrossband Dual-Band ExpressLRS Receiver is available at Zbotic with fast shipping across India.
Radiomaster XR4 Gemini Xrossband Dual-Band ExpressLRS Receiver
Description:
The Radiomaster XR4 Gemini Xrossband ExpressLRS Receiver offers cutting-edge dual-band reliability in an ultra-compact package. Supporting both 2.4GHz and Sub-G 900MHz frequencies via twin LR1121 RF chips, it ensures unmatched RF stability. Integrated with ExpressLRS v3.5.1 and true diversity, this receiver enables rapid data handling, boasting up to 1000Hz refresh rates.
Ideal for drones and fixed-wing aircraft, the XR4’s lightweight 1.7g design and dual CRSF/UART bus interfaces make it an elite choice for demanding pilots. Enhanced with built-in Wi-Fi for easy configuration, it delivers precision and rock-solid performance wherever your flight takes you.
Features:
- Dual Semtech LR1121 transceivers for enhanced range
- ExpressLRS Gemini & Gemini Xrossband (Gem-X) protocol
- Compact and ultra-lightweight for drones & wings
- ESP32D4 MCU with integrated Wi-Fi for WebUI access
- True diversity for stable RF links in tough conditions
- CRSF and UART interfaces for flexible setups
- Refresh rate up to 1000Hz with ultra-low latency
- Easy soldering with castellated pads
Specifications:
| Frequency (GHz): | 2.4 |
|---|---|
| Modulation Type: | LoRa |
| Color: | Black |
| Band-Range (GHz) | 2.4G – 2.5 |
| Bandwidth (KHz) | 62.5 |
| Charging Port (Y/N) | N |
| Code Type | ExpressLRS |
| Operating Voltage (VDC): | 4.5V – 8.4V |
| RF Power | 100mW |
| Item Type: | XR4 Gemini Xrossband Dual-Band Receiver |
| RF Chip | R1121 x 2 |
| RF connector | IPEX-1 X 2 |
| Frequency Range: | 2.4GHz ISM Band |
| Working Voltage | DC 4.5 – 8.4V |
Radiomaster XR4 Gemini Xrossband Dual-Band ExpressLRS Overview
The Radiomaster XR4 Gemini Xrossband Dual-Band ExpressLRS Receiver is a compact, lightweight RF module designed for high-performance FPV drones and fixed-wing aircraft. It provides reliable long-range control with dual-band 2.4 GHz/900 MHz support and true diversity reception.
Key Features of Radiomaster XR4 Gemini Xrossband Dual-Band ExpressLRS
- Dual-Band Support: Simultaneous 2.4 GHz and Sub-G 900 MHz operation for robust link performance.
- Twin Semtech LR1121 Chips: Ensures redundancy and stable RF reception in demanding environments.
- Ultra-Compact & Lightweight: Measures 22×18×4 mm and weighs just 1.7 g for minimal impact on build weight.
- ExpressLRS v3.5.1 Pre-Installed: Ready to use with the latest firmware offering up to 1000 Hz refresh rates.
- True Diversity Antennas: T-type dual-band antennas provide optimal signal strength and reduced dropouts.
- Dual Bus Interfaces: CRSF and UART ports for flexible integration with flight controllers.
- Fast Shipping from Zbotic: Dispatched within 24 hours across India.
Applications and Use Cases
- Long-range FPV racing drones requiring reliable signal diversity.
- Fixed-wing aircraft where compact, lightweight telemetry is critical.
- Freestyle quads operating in environments with RF interference.
- High-altitude long-endurance (HALE) UAVs leveraging dual-band control links.
- RC gliders and sailplanes needing minimal antenna drag.
- Search and rescue UAVs demanding stable telemetry over varied terrain.
How to Use Radiomaster XR4 Gemini Xrossband Dual-Band ExpressLRS
To set up the XR4 Gemini, solder the supplied dual-band antennas to the T-type connectors and mount the receiver on your aircraft. Bind it to your ExpressLRS transmitter using the CRSF or UART interface, then configure your flight controller’s receiver settings to CRSF or UART mode. Power up the system, verify telemetry data at up to 1000 Hz, and adjust antenna orientation for optimal diversity reception.
Why Buy from Zbotic?
- Genuine Products: All items sourced from authorized distributors
- Fast Shipping: Orders ship within 24 hours with tracking (non backordered products)
- Free Shipping: Free delivery on qualifying orders
- COD Available: Cash on Delivery, UPI, cards, net banking
- Technical Support: Expert help for setup and troubleshooting
- Easy Returns: Hassle-free replacement for defective products
Frequently Asked Questions
Can I use both 2.4 GHz and 900 MHz bands simultaneously?
Yes, the XR4 Gemini’s twin LR1121 RF chips enable true diversity, allowing simultaneous reception on 2.4 GHz and Sub-G 900 MHz bands for enhanced link reliability.
How do I bind the receiver to my ExpressLRS transmitter?
Power on the receiver in binding mode by shorting the bind pads, then initiate bind on your ExpressLRS transmitter. Once the LED indicates a successful link, remove the bind short and reboot.
Which interface should I use: CRSF or UART?
Use CRSF for tighter integration with CRSF-capable flight controllers offering telemetry and control over a single bus. UART can be used for legacy setups or separate telemetry channels.
Datasheet:
Package Includes:
- 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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Read More →Technical Specifications
| Brand | Radiomaster |
|---|---|
| Model | XR4 |
| SKU | AI7303 |
| Weight | 0.0221 kg |
| Availability | Out of Stock |
Applications & Use Cases
The Radiomaster XR4 Gemini Xrossband Dual-Band ExpressLRS Receiver is a versatile drone transmitter and receiver used across a wide range of applications including FPV drone control, RC aircraft, ground vehicles, and long-range drone operations.
Common use cases:
- Setting up a new FPV quad with digital link
- Replacing a receiver after a crash
- Building a long-range fixed-wing aircraft
This product is ideal for FPV pilots, RC hobbyists, and drone builders.
Technical Tip: ELRS (ExpressLRS) offers excellent range and low latency at 2.4GHz. Ensure your transmitter and receiver use the same protocol.
Shipping & Delivery
- Free shipping on orders above ₹999 across India
- Dispatched within 1-3 business days
- Expected delivery: 3-7 business days depending on location
- Secure packaging to ensure safe transit of electronic components
- Genuine Radiomaster product sourced from authorized channels
Utkarsh Tandon (verified owner) –
Nice Radiomaster XR4 Gemini Xrossband Dual-Band ExpressLRS, does the job. Delivery took a couple of extra days but product is solid.
Vijay Deshpande –
Decent Radiomaster XR4 Gemini Xrossband Dual-Band ExpressLRS for the price. Using it in my quadcopter, performs well overall.
Lakshmi Ghosh (verified owner) –
Received the Radiomaster XR4 Gemini Xrossband Dual-Band ExpressLRS in great condition. Testing done, everything works perfectly.
Pallavi Tiwari (verified owner) –
Using this Radiomaster XR4 Gemini Xrossband Dual-Band ExpressLRS in my FPV drone build. Quality is top notch. Very happy with the purchase.
Parth Parekh (verified owner) –
Nice Radiomaster XR4 Gemini Xrossband Dual-Band ExpressLRS, does the job. Delivery took a couple of extra days but product is solid.
Milan Shah (verified owner) –
Excellent product for the price. My drone flies smoothly with this Radiomaster XR4 Gemini Xrossband Dual-Band ExpressLRS. Highly recommended!
Aisha Dave (verified owner) –
Good quality Radiomaster XR4 Gemini Xrossband Dual-Band ExpressLRS. Minor scratches on arrival but functionally perfect.
Karan Nair (verified owner) –
Good product overall. My drone is flying well with this Radiomaster XR4 Gemini Xrossband Dual-Band ExpressLRS. Satisfied with the purchase.
Mukesh Thakur (verified owner) –
Perfect for my agriculture drone project. This Radiomaster XR4 Gemini Xrossband Dual-Band ExpressLRS handles the weight effortlessly.
Prateek Dhillon (verified owner) –
Decent Radiomaster XR4 Gemini Xrossband Dual-Band ExpressLRS for the price. Using it in my quadcopter, performs well overall.
Karan Khanna (verified owner) –
Great quality Radiomaster XR4 Gemini Xrossband Dual-Band ExpressLRS. Perfect specs for my drone project. Fast delivery too!
Suresh Vyas (verified owner) –
This Radiomaster XR4 Gemini Xrossband Dual-Band ExpressLRS exceeded my expectations. Installed it yesterday and took a successful test flight today.
Naveen Mukherjee (verified owner) –
Using this Radiomaster XR4 Gemini Xrossband Dual-Band ExpressLRS in my FPV drone build. Quality is top notch. Very happy with the purchase.
Neeraj Kamath (verified owner) –
Outstanding Radiomaster XR4 Gemini Xrossband Dual-Band ExpressLRS! Installed it on my racing quad and the performance is amazing.
Aditya Dhawan (verified owner) –
Solid Radiomaster XR4 Gemini Xrossband Dual-Band ExpressLRS. Not the absolute best but excellent value for the price point.
Devansh Solanki (verified owner) –
Excellent Radiomaster XR4 Gemini Xrossband Dual-Band ExpressLRS! Perfect for my quadcopter build. Arrived well packed and works flawlessly.
Akshat Mishra (verified owner) –
This Radiomaster XR4 Gemini Xrossband Dual-Band ExpressLRS is value for money. Comparing with other brands, Zbotic offers the best deal.
Swati Naidu (verified owner) –
Been using this Radiomaster XR4 Gemini Xrossband Dual-Band ExpressLRS for 3 months now, zero issues. Great product.
Sanjay Dhawan (verified owner) –
Very good quality Radiomaster XR4 Gemini Xrossband Dual-Band ExpressLRS. I’ve been building drones for 2 years now and this is one of the best I’ve used.
Sarika Malhotra (verified owner) –
Using this Radiomaster XR4 Gemini Xrossband Dual-Band ExpressLRS in my FPV drone build. Quality is top notch. Very happy with the purchase.
Akshat Srivastava (verified owner) –
Amazing build quality! This Radiomaster XR4 Gemini Xrossband Dual-Band ExpressLRS is sturdy and lightweight at the same time.
Neeraj Arora –
Amazing build quality! This Radiomaster XR4 Gemini Xrossband Dual-Band ExpressLRS is sturdy and lightweight at the same time.
Akash Solanki (verified owner) –
Pretty good Radiomaster XR4 Gemini Xrossband Dual-Band ExpressLRS. Works as expected for my drone project. Would buy again.
Dinesh Srivastava –
Using this Radiomaster XR4 Gemini Xrossband Dual-Band ExpressLRS in my FPV drone build. Quality is top notch. Very happy with the purchase.
Aman Iyer (verified owner) –
Excellent product for the price. My drone flies smoothly with this Radiomaster XR4 Gemini Xrossband Dual-Band ExpressLRS. Highly recommended!
Hemant Rajan (verified owner) –
Very impressed with this Radiomaster XR4 Gemini Xrossband Dual-Band ExpressLRS. My drone’s performance improved noticeably.