GEPRC ELRS 915M/2.4G C3 Gemini Xrossband Receiver
by GepRC

GEPRC ELRS 915M/2.4G C3 Gemini Xrossband Receiver – Dual-Frequency True Diversity ExpressLRS Navigation Hub

Achieve absolute signal immunity and revolutionary link security with the GEPRC ELRS 915M/2.4G C3 Gemini Xrossband Receiver. Built upon the revolutionary ExpressLRS open-source protocol, this cutting-edge receiver is engineered for long-range FPV pilots, industrial sUAS developers, and tactical drone operators who require an unbreakable control link in high-interference or hostile RF environments. By pioneering Gemini Crossband (Xrossband) technology, the C3 utilizes dual radio frequency paths to transmit and receive control data simultaneously across two distinct bands: 915MHz and 2.4GHz. This hybrid infrastructure merges the extreme obstacle penetration and long-range physics of sub-GHz frequencies with the ultra-low latency, high packet rates, and agile bandwidth of the 2.4GHz spectrum, effectively rendering control link drops and failsafes a thing of the past.

The hardware profile is exceptionally compact despite its dual-chip architecture, making it an easy install on everything from tight 3-inch freestyle builds to heavy-lift commercial cinema octocopters. Operating in true Gemini mode, the receiver aggressively combats multipath interference, polarization mismatch, and localized band jamming by instantly prioritizing the cleanest incoming data packets from either frequency rail. The receiver features a robust telemetry power output up to 100mW, ensuring your transmitter receive signal strength indicator (RSSI) and vital flight statistics stream back to your ground station flawlessly over extreme distances. Outfitted with dual independent antenna ports and full CRSF protocol integration, this high-reliability receiver represents the gold standard in modern drone link redundancy for aerospace universities, custom UAV labs, and commercial enterprise applications.

Technical Specifications

• Protocol Support: Open-Source ExpressLRS (ELRS)

• RF Architecture: Gemini Crossband (Simultaneous Dual-Frequency True Diversity)

• Operational Frequencies: 915MHz (Sub-GHz Long-Range) & 2.4GHz (High Packet-Rate)

• Input Voltage Requirement: DC 5.0V (Standard Flight Controller Receiver Pad)

• Telemetry Output Power: Up to 100mW Max (Adjustable via ELRS Lua Script)

• Receiver Protocol Interface: CRSF (Crossfire Protocol via UART Connection)

• Antenna Connectors: 2x Generation 4 IPEX / MHF4 Connectors

• Firmware Target Optimization: GEPRC C3 Gemini Crossband RX

• Bus Connectivity Layout: VCC, GND, RX, TX

• Status Indicators: Multi-Color Onboard LED Status Indicator

• Physical Board Dimensions: 22 mm x 15 mm x 4.5 mm

• Net Hardware Weight: 1.8 grams (Excluding antennas)