Looking for Radiomaster Dbr4 Dual Receiver? Radiomaster DBR4 Dual band Xross Gemini ExpressLRS Receiver is available at Zbotic with fast shipping across India.
Radiomaster Dbr4 Dual Receiver – Description:
The Radiomaster DBR4 Dual Band Xross Gemini ExpressLRS Receiver delivers unmatched dual-frequency reliability with ExpressLRS 2.4GHz and 900MHz support. Featuring dual-band dual-channel Gemini architecture and four discrete antennas, it ensures robust, interference-free signal reception.
With advanced Semtech LR1121 chips, 500Hz refresh rate, and pre-installed ExpressLRS v3.3.2 firmware, it’s optimized for extreme performance. Compact and lightweight, the DBR4 is ideal for high-demand RC setups and perfectly pairs with the RadioMaster Nomad module.
Features:
- Dual-channel Gemini design for independent 2.4GHz and 900MHz reception
- ExpressLRS protocol with Xrossband GemX support
- Maximum telemetry RF power of 2 x 100mW
- 4 discrete antennas ensure optimal layout flexibility
- Ultra-lightweight with compact footprint
- Advanced interference rejection and reliable connectivity
- Perfect match for RadioMaster Nomad modules
- ExpressLRS firmware v3.3.2 pre-installed for instant deployment
Specifications:
| Item Type: | Receiver |
|---|---|
| Frequency (GHz): | 2.404 – 2.479 GHz / 903.5 – 926.9 MHz |
| No. of Channels: | 2 |
| Modulation Type: | ExpressLRS Gemini |
| Color: | Black |
| Operating Voltage (VDC): | 4.5 – 8.4 |
Package Includes:
- 1 x DBR4 Gemini Xrossband ExpressLRS Receiver
- 2 x 2.4GHz Wire Antennas
- 2 x 900MHz Wire Antennas
- 1 x CRSF Wire
- 4 x 4mm Red Vibration Dampeners
- 4 x 3mm Black Vibration Dampeners
- 1 x Manual Card
Radiomaster DBR4 Dual band Xross Gemini ExpressLRS Receiver Overview
The Radiomaster DBR4 Dual band Xross Gemini ExpressLRS Receiver is a high-performance RC module designed for FPV drone pilots seeking rock-solid control links. It combines simultaneous 2.4GHz and 900MHz operation with Gemini dual-stream architecture to ensure interference-free signal reception and minimal latency during aggressive maneuvers or long-range flights.
Key Features of Radiomaster DBR4 Dual band Xross Gemini ExpressLRS Receiver
- Dual-band operation on 2.4GHz and 900MHz for optimal range and redundancy
- Two Semtech LR1121 RF chips delivering true dual-stream diversity
- Four discrete antennas strategically placed for maximal reception
- Up to 500Hz telemetry refresh rate, upgradeable to 1000Hz in ExpressLRS v3.4
- CRSF protocol interface and standard 20×20mm mounting holes
- Pre-installed ExpressLRS v3.3.2 firmware for immediate out-of-box binding
- Genuine product with fast shipping from Zbotic across India
Applications and Use Cases
- Long-range FPV exploration where dual-band diversity prevents dropouts
- High-speed drone racing demanding ultra-low latency links
- Aerial videography requiring uninterrupted transmitter control
- Custom quadcopter builds with compact receiver footprint
- High-altitude UAV projects needing reliable long-distance telemetry
How to Use Radiomaster DBR4 Dual band Xross Gemini ExpressLRS Receiver
Mount the DBR4 using its 20×20mm holes, connect the CRSF output to your flight controller’s receiver port, and arrange the four antennas for line-of-sight coverage. Power on while holding the bind jumper to sync with your ExpressLRS transmitter module, then configure channel mapping in your transmitter software and perform a range check before flight.
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
Which frequency bands does the DBR4 support?
The DBR4 supports both 2.4GHz and 900MHz bands simultaneously, leveraging Gemini dual-stream architecture for enhanced link stability and extended range.
How do I bind the receiver to my ExpressLRS transmitter?
Power on the DBR4 in bind mode by installing the bind jumper, then activate bind on your ExpressLRS transmitter module. Wait for the LED to solidify, indicating a successful link before removing the jumper.
What mounting options are available for the DBR4?
The receiver features industry-standard 20×20mm mounting holes, compatible with most FPV frames and allowing secure attachment in tight builds.
Datasheet:
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| Brand | Radiomaster |
|---|---|
| Model | DBR4 |
| SKU | AI7314 |
| Availability | Out of Stock |
Applications & Use Cases
The Radiomaster DBR4 Dual band Xross Gemini 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
Sandhya Bhatt (verified owner) –
Average Radiomaster DBR4 Dual band Xross Gemini. Works fine but expected slightly better quality at this price.
Amit Reddy (verified owner) –
This Radiomaster DBR4 Dual band Xross Gemini is exactly what I needed for my drone. Works perfectly, very reliable.
Utkarsh Krishnan –
This Radiomaster DBR4 Dual band Xross Gemini exceeded my expectations. Installed it yesterday and took a successful test flight today.
Shivam Joshi (verified owner) –
Using this Radiomaster DBR4 Dual band Xross Gemini in my FPV drone build. Quality is top notch. Very happy with the purchase.
Hitesh Patil –
Perfect for my agriculture drone project. This Radiomaster DBR4 Dual band Xross Gemini handles the weight effortlessly.
Deepak Kulkarni –
Decent Radiomaster DBR4 Dual band Xross Gemini. Took some effort to set up but working now.
Dhruv Banerjee –
Decent Radiomaster DBR4 Dual band Xross Gemini for the price. Using it in my quadcopter, performs well overall.
Tanmay Shetty (verified owner) –
This Radiomaster DBR4 Dual band Xross Gemini is value for money. Comparing with other brands, Zbotic offers the best deal.
Ajay Tiwari (verified owner) –
This Radiomaster DBR4 Dual band Xross Gemini is value for money. Comparing with other brands, Zbotic offers the best deal.
Vivek Bhat (verified owner) –
My 5th order from Zbotic. This Radiomaster DBR4 Dual band Xross Gemini is excellent as always. Totally reliable store.