SKU: 83693459829

Radiomaster DBR4 Xrossband Gemini ELRS Receiver

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Description

Radiomaster DBR4 Xrossband Gemini ELRS ReceiverThe RadioMaster DBR4 Xrossband Gemini Receiver is the perfect match for the RadioMaster Nomad, bringing seamless compatibility and unmatched connectivity. Designed for pilots who demand performance, the DBR4 is a dual band, dual channel receiver that handles 2. 4GHz and 900MHz signals simultaneously. This means two data streams at once, offering exceptional interference rejection and a reliable connection that keeps you in control, even in challenging

The RadioMaster DBR4 Xrossband Gemini Receiver is the perfect match for the RadioMaster Nomad, bringing seamless compatibility and unmatched connectivity. Designed for pilots who demand performance, the DBR4 is a dual-band, dual-channel receiver that handles 2.4GHz and 900MHz signals simultaneously. This means two data streams at once, offering exceptional interference rejection and a reliable connection that keeps you in control, even in challenging conditions.

Built with two independent dual-band sections, the DBR4 doesn't just promise signal stability—it delivers. Whether you're pushing the limits of your RC aircraft or fine-tuning your latest FPV drone, this receiver ensures robust performance without the headache of lost packets.

Legal Notice: This receiver includes a 900MHz ELRS transmitter. Usage of the 900MHz frequency in the UK is currently illegal. Users must flash the firmware onto the 868MHz band to comply with regulations.

Key Features:

  • Unmatched Dual-Band Technology: Experience dual-band ELRS Gemini Xrossband with simultaneous 2.4GHz and 900MHz reception.
  • Powerful Telemetry: Maximum telemetry RF power of 2x 100mW ensures clear, reliable communication.
  • Optimized Antenna Arrangement: Four discrete antennas provide superior signal strength and stability.
  • Compact Design: 20x20mm mounting holes make it easy to integrate into any setup.
  • GemX Xrossband Support: Enhanced compatibility and performance for complex builds.

Specifications:

  • Type: ISM_2.4, FCC_915
  • MCU: ESP32
  • RF Chip: Semtech LR1121 x 2
  • Telemetry RF Power: Max 100mW
  • Antenna Setup: 2 x 2.4GHz wires, 2 x 900MHz wires
  • Frequency Range: 2.404 - 2.479 GHz / 903.5 - 926.9 MHz
  • Receiver Refresh Rate: Max 500Hz, Min 50Hz
  • Working Voltage: DC 4.5 - 8.4V
  • Weight: 2.70g (without antennas), 5.30g (with antennas)
  • Dimensions: 27.20 x 27.20mm
  • Firmware Version: ExpressLRS v3.3.2 pre-installed
  • Bus Interface: CRSF

What's in the Box:

  • 1x Radiomaster DBR4 Gemini Xrossband ELRS Receiver
  • Assorted Accessories (may vary based on supply)

Disclaimer: Accessories included may vary depending on supply. Always verify contents before use.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
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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
SKU: 83693459829

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Outlier
Massapequa, US
★★★★★ 5
A must have for every intelligence professional - collector or analyst!
Format: Paperback
An excellent resource for any intelligence collector or analyst. The chapters are written by world-class experts in each discipline with an excellent final chapter on collection management written by Drs. Lowenthal and Clark. Each chapter defines the elements of the particular intelligence discipline, its history and producers, as well as how the INT is managed and explores likely future trends. An extensively researched and documented text that is nonetheless an approachable resource that would make an excellent addition to any intelligence related syllabus.
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Reviewed in the United States on February 9, 2015
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Richard
Battle Creek, US
★★★★★ 4
informative
Format: Paperback
most relevant for today’s challenges
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Reviewed in the United States on August 17, 2018
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Andrew W. Jones
Pawtucket, US
★★★★★ 5
Great for grad students
Format: Paperback
Bought this as a textbook for my class; good book
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Reviewed in the United States on August 20, 2020
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Luke
Birmingham, US
★★★★★ 3
Good Review of the Intel Disciplines
Format: Kindle
I rented this book as required for an intelligence collections course I as taking. It is a good rundown on the different INT disciplines and the bureaucratic organizations managing the different INT categories. This book does not really touch on the various collection programs used to manage collections, or what the nomenclature of those requirements are, so reading this book will not teach you about intelligence collection management beyond gaining a foundational understanding of what the various INTs are used for.
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Reviewed in the United States on December 13, 2019
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Amazon Customer
San Leandro, US
★★★★★ 1
Don't buy school books from Amazon
Format: Paperback
Thought I bought new, book came with an obsurd "Amazon Rentals" sticker on it. Looks used and abused. Will not be buying books needed for school from Amazon ever again.
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Reviewed in the United States on March 6, 2021

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