Home / Electronics / RadioMaster XR4 Gemini Xrossband Dual-Band ExpressLRS Receiver
RadioMaster
RadioMaster XR4 Gemini Xrossband Dual-Band ExpressLRS Receiver
₪250
A true-diversity, dual-band ExpressLRS receiver with twin LR1121 transceivers covering 2.4GHz and Sub-G 900MHz. In Gemini Xrossband (Gem-X) mode one antenna runs on 900MHz and the other on 2.4GHz at the same time, for a link that is very hard to break; it can also run Gemini on a single band. Built-in Wi-Fi for firmware updates and setup from a browser, a second UART, castellated pads for easy soldering. 1.7g.
Features
- True diversity, dual band: 2.4GHz and Sub-G 900MHz
- Gemini Xrossband (Gem-X) - both bands at once
- Also Gemini on a single band (2.4GHz or 900MHz)
- Twin Semtech LR1121 transceivers, ESP32 MCU
- Built-in Wi-Fi for updates and setup via WebUI
- Secondary UART for advanced functions
- Castellated pads for easy soldering
- Only 1.7g
Specifications
MCUESP32D4
RF chips2 x Semtech LR1121
Frequency2.4GHz / Sub-G 900MHz (868/915MHz)
ModesGemini 2.4GHz, Gemini Sub-G, Gemini Xrossband (Gem-X)
Gem-X antenna useAnt 1 = 868/915MHz, Ant 2 = 2.4GHz
RF connectors2 x IPEX-1
Antennas2 x dual-band T antenna (included)
Telemetry power100mW
Packet rateUp to 1000Hz (K1000) / 500Hz (DK500); minimum 50Hz
Input voltage4.5-8.4V DC
Bus interfaceCRSF + secondary UART
FirmwareExpressLRS 3.5.1 pre-installed
FW targetRadioMaster XR4 2.4/900 Gemini RX
Dimensions22 x 18 x 4mm
Weight1.7g (without antennas)
In the box
- 1 x XR4 Gemini Xrossband receiver
- 2 x dual-band T antenna
- 1 x CRSF wire
- 3 x heat-shrink tube
- 1 x manual card
1
SKUELC-0064
BrandRadioMaster
CategoryElectronics
Stock2 units
