The RadioMaster DBR4 Xross Gemini ExpressLRS receiver supports simultaneous reception of signals in the 2.4GHz and 900MHz bands, which ensures stable communication. Two independent receiving sections minimize packet loss and reduce interference. The pre-installed ExpressLRS v3.3.2 firmware supports an update rate of up to 500Hz. Four antennas improve signal quality and provide optimal placement for reliable operation. The device is compatible with the CRSF protocol and runs on the ESP32 microcontroller. The telemetry power of 2×100mW guarantees stable feedback. Due to its compact size and 20×20mm mounting holes, the receiver can be easily integrated into various systems.
Features
Gemini dual-band, dual-channel receiver with support for simultaneous reception of 2.4GHz and 900MHz signals
Exceptional interference reduction and minimized packet loss due to two independent receiving sections
Four separate antennas for optimal positioning and enhanced signal reception
2 powerful 100mW telemetry units each for stable feedback
20*20mm mounting holes for easy integration into systems
Specifications
Frequency range: 2,404-2,479GHz/903,5-926,9МHz
Type: ISM_2.4, FCC_915
MCU: ESP32
RF chip: Semtech LR1121x2
RF telemetry power: max. 100mW
Operating voltage: DC 4.5 - 8.4V
Firmware version: ExpressLRS v3.3.2 pre-installed
Maximum receive refresh rate: 500Hz (1000Hz coming soon in ExpressLRS V3.4)
Brand: RadioMasterSKU 18090
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