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DBR4 Dual-Band Xross Gemini ExpressLRS Receiver

$29.99
In stock
SKU
HP0157.0086
High-performance dual-band ExpressLRS receiver for RC enthusiasts.
More Information
ManufactureRadioMaster

Introducing the DBR4 Dual-Band Xross Gemini ExpressLRS Receiver

Meet the DBR4 Receiver, the ultimate companion for the RadioMaster Nomad. This cutting-edge, dual-band, dual-channel Gemini receiver offers seamless compatibility with the Nomad module, delivering exceptional performance and reliability.

Engineered with advanced dual-band technology, the DBR4 features two sections that simultaneously receive 2.4GHz and 900MHz signals. This allows for two independent data streams, ensuring robust signal integrity, superior interference rejection, and virtually no packet loss. With the DBR4, you can trust your connection to remain reliable, giving you the confidence to push boundaries and explore new possibilities.

Upgrade your RC experience with the DBR4 Receiver—designed for unparalleled connectivity and performance.

Key Features

  • Telemetry RF Power: Up to 2 x 100mW
  • Dual-Band Reliability: ELRS Gemini Xrossband for unmatched performance
  • Frequencies Supported: ExpressLRS Gemini 2.4GHz, ExpressLRS Gemini 868/900MHz
  • Antenna Setup: 4 discrete antennas for optimal signal arrangement
  • Compact Design: 20 x 20mm mounting holes for easy integration
  • GemX Support: Supports Xrossband Gemini modes

Specifications

  • Model: DBR4 Gemini Xrossband ExpressLRS Receiver
  • Type: ISM_2.4, FCC_915
  • MCU: ESP32
  • RF Chip: Semtech LR1121 x 2
  • Telemetry RF Power: Max 100mW
  • Antenna: 2 x 2.4GHz wires & 2 x 900MHz wires
  • Frequency Range: 2.404 - 2.479 GHz / 903.5 - 926.9 MHz
  • Receive Refresh Rate: Max: 500Hz (1000Hz coming in ExpressLRS V3.4), Min: 50Hz
  • Working Voltage: DC 4.5 - 8.4V
  • Weight: Without antennas: 2.70g / With antennas: 5.30g
  • Dimensions: 27.20mm x 27.20mm
  • Firmware: Pre-installed with ExpressLRS v3.3.2
  • Interface: CRSF

New Packet Rate Modes

  • Sub-GHz 250Hz (-111dBm): Faster packet rates with enhanced sub-GHz performance.
  • Sub-GHz 200Hz Full (-111dBm): Optimized for MAVLink with double the packet data compared to current 900 SX1276 hardware.
  • Dual Band X150Hz (-112dBm): Gemini Mode combines sub-GHz and 2.4GHz transmissions with reduced interference and 150Hz packet rates.
  • Dual Band X100Hz Full (-112dBm): Maintains dual-frequency benefits at 100Hz, supporting full 16-channel resolution for strong connectivity in challenging environments.

K Modes (Coming in ExpressLRS V3.5)

  • DK500: Designed for speed and RC reliability, featuring FSK modulation and built-in packet repair (Forward Error Correction). Ideal for competitive racing environments.
  • K1000 Full Sub-GHz: Achieves a groundbreaking 1000Hz in the 868/900MHz domain. Ideal for MAVLink users requiring maximum data throughput and long-range testing.

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

Experience the DBR4 Receiver and take your RC performance to the next level!

More Information
ManufactureRadioMaster
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