RadioMaster DBR4 Dual Band 2.4GHz/900GHz Xross Gemini ExpressLRS (ELRS) Receiver

Receiver Overview:

This is the DBR4 Dual Band 2.4GHz/900GHz Xross Gemini ExpressLRS Receiver from RadioMaster. Designed for seamless compatibility with the RadioMaster Nomad module, this dual-band, dual-channel receiver delivers exceptional connectivity and interference rejection. The DBR4 ensures robust performance with simultaneous 2.4GHz and 900MHz signal reception, offering reliability and stability for even the most demanding RC applications. Elevate your control experience with the innovative design and advanced capabilities of the DBR4 Receiver.

Features:

• Telemetry RF power: Max 2x 100mW
• Dual-band ELRS Gemini Xrossband technology
• Simultaneous 2.4GHz and 900MHz signal reception
• Four discrete antennas for optimal arrangement
• 20 x 20mm mounting holes for easy installation

Specifications:

• 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
• Maximum Receive Refresh Rate: 500Hz
• Minimum Receive Refresh Rate: 50Hz
• Working Voltage: DC 4.5-8.4V
• Weight: Without antennas 0.095oz (2.70g) (w/antennas 5.30g)
• Dimension: 1.07x1.07in (27.20x27.20mm)
• Firmware Version: ExpressLRS v3.3.2 pre-installed
• Bus Interface: CRSF

Includes:

• (1) DBR4 Gemini Xrossband ExpressLRS Receiver
• (2) 2.4GHz wire antennas
• (2) 900MHz wire antennas
• (1) CRSF wire
• (4) 4mm red vibration dampeners
• (4) 3mm black vibration dampeners
• (1) Manual card