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Description
RadioMaster DBR4 Dual-Band Xross Gemini ExpressLRS ReceiverIntroducing the DBR4 Receiverthe ideal match for the RadioMaster Nomad. This advanced dual band, dual channel Gemini receiver ensures seamless compatibility with the Nomad module. With its ability to simultaneously receive 2. 4GHz and 900MHz signals, the DBR4 offers exceptional interference rejection and reliable signal integrity. Trust the DBR4 for robust performance and explore new horizons with confidence. VIDEO: RadioMaster Nomad ExpressLRS Module
Introducing the DBR4 Receiver—the ideal match for the RadioMaster Nomad. This advanced dual-band, dual-channel Gemini receiver ensures seamless compatibility with the Nomad module. With its ability to simultaneously receive 2.4GHz and 900MHz signals, the DBR4 offers exceptional interference rejection and reliable signal integrity. Trust the DBR4 for robust performance and explore new horizons with confidence.
VIDEO: RadioMaster Nomad ExpressLRS Module – Next-Level Dual-Band Performance!
Features
- Supports ExpressLRS Gemini 868/900MHz
- Supports ExpressLRS Gemini 2.4GHz
- 2x 100mw Telemetry RF Power
- Gemini Xrossband Technology
- Advanced Cooling System
- 20x20 Mounting Holes
- 4 Discrete Antennas
- Compatibility
INTRODUCTION OF K MODES
K1000 Full SubGHz (Coming in ExpressLRS V3.5)
- Yes, you read that right—1000Hz in the 868/900MHz domain! While this mode is designed for maximum data throughput when used with MAVLink, don't let the 1000Hz fool you; during development, it was tested for long-range performance.
DK500 (Coming in ExpressLRS V3.5)
- Designed specifically from the ground up for speed enthusiasts and RC reliability. K modes are next-generation FSK modulation with built-in packet repair (Forward Error Correction). Similar to FLRC D500, DK500 sends repeat packets to minimize packet loss in challenging race environments. Paired with a Gemini-enabled Tx and Rx, nothing compares to its RC reliability.
NEW PACKET RATES
Sub-GHz 200Hz Full (-111dBm)
- Optimized for MAVLink: Double the packet rate of current 900MHz SX1276 hardware, tailored specifically for MAVLink users to provide a more robust link and reduced interference.
Dual Band X100Hz Full (-112dBm)
- Enhanced Gemini Mode: Enjoy dual-frequency transmission with a 100Hz packet rate and full 16-channel resolution, ensuring strong and stable connectivity even in challenging environments.
Dual Band X150Hz (-112dBm)
- Gemini Mode: Experience simultaneous sub-GHz and 2.4GHz transmissions, offering robust performance and reduced interference with a packet rate of 150Hz.
Sub-GHz 250Hz (-111dBm)
- Speed Boost: Achieve faster packet rates with enhanced sub-GHz performance.
Specifications
- Maximum Receive Refresh Rate: 500Hz (1000Hz coming soon in ExpressLRS V3.4)
- Frequency Range: 2.404 - 2.479 GHz / 903.5 - 926.9 MHz
- Weight: 2.70g (without antennas) / 5.30g (with antennas)
- Item: DBR4 Gemini Xrossband ExpressLRS Receiver
- Firmware Version: ExpressLRS v3.3.2 pre-installed
- Antenna: 2 × 2.4GHz Wires & 2 × 900MHz Wires
- Minimum Receiver Refresh Rate: 50Hz
- Telemetry RF Power: Max 100mW
- Working Voltage: DC 4.5 - 8.4V
- Dimensions: 27.20 × 27.20 mm
- RF Chip: Semtech LR1121 × 2
- Type: ISM_2.4, FCC_915
- Bus Interface: CRSF
- MCU: ESP32
Includes
- 1x RadioMaster DBR4 Dual-Band Xross Gemini ExpressLRS Receiver
- 4x 3mm Black Vibration Dampeners
- 4x 4mm Red Vibration Dampeners
- 1x Manual Card
- 1x CRSF Wire
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.8 ★★★★★
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Product Reviews
★★★★★ 5
A beautiful and affecting book
Format: Hardcover
A beautiful and affecting book. The civil war is, at least to me, deeply familiar, but this book focuses on the personal, and conveys with a painful immediacy the ways that the horror of this conflict infiltrated and transformed the day-to-day existence of our not-so-distant ancestors. I was struck as I have never been before by the degree to which the appalling, unprecedented violence of the conflict was "just around the corner" for familiar and modern-seeming Americans.
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Reviewed in the United States on May 10, 2015
★★★★★ 5
... our traditional textbook and primary sources) and my students LOVE it. Although it's not perfect
Format: Hardcover
I have started using this in my US history survey class (along with our traditional textbook and primary sources) and my students LOVE it. Although it's not perfect, it's a great complement to other sources and offers a terrific way to talk about alternate ways to interpret history. In addition, my 11 and 14 year old sons have also read it and enjoyed it, so it's accessible for a broad range of ages. And, as my students note in their final papers, it's fun to read, and how often do gen ed students say that at the end of the semester?
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 16, 2016
★★★★★ 5
Former lib. Book
Format: Hardcover
Book was as described
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 18, 2023
★★★★★ 5
Carry on with the great writing Rachel Lacey while I look for my next bodyguard book
Format: Kindle
I'm on a bodyguard reading kick right now, only wlw of course. I read this one for the first time about a year ago and somehow, I didn't leave a review. ( I'm good at hopping from one book to another and forgetting to write one. oopsy) I loved the bodyguard part but as stories go I always hate someone's parent dying. ( too much like real life) I know it's necessary to show why Natalie is so effed up. Rachel wrote a great ending to this story and that is always a plus in my eyes.
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Reviewed in the United States on April 22, 2026
★★★★★ 4
cute and captivating
Format: Kindle
I really enjoyed the storyline and the emotional growth of the characters in this book. I’d been putting it off for a while but I’m glad I finally picked it up and took a chance on it because it was such a cute story.
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Reviewed in the United States on July 24, 2025