GEPRC ELRS 915M 2.4G C3 Gemini Crossband Receiver

GEPRC ELRS 915M 2.4G C3 Gemini Crossband Receiver

Product description

The GEPRC ELRS 915M/2.4G C3 Gemini Xrossband Receiver is a state-of-the-art dual-band ExpressLRS receiver for FPV drones, long-range systems, and professional RC applications. Developed based on the popular open-source ExpressLRS project, this receiver combines state-of-the-art radio technology with extremely low latency, high signal stability, and flexible dual-band communication.

At the heart of the system, two powerful third-generation Semtech LR1121 RF chips work in tandem with an energy-efficient ESP32-C3 processor. As a result, the receiver supports both the 915 MHz sub-GHz band and the 2.4 GHz band—even simultaneously in true dual-band operation. The result is an exceptionally stable connection with outstanding interference resistance, ideal for racing, freestyle, and long-range flights.

With an update rate of up to 1000 Hz (FSK), the GEPRC Gemini Receiver delivers extremely fast response times and precise control. Thanks to the integrated TCXO oscillator, the frequency remains stable even during temperature fluctuations—an important advantage during long flights or in changing weather conditions.

The built-in Wi-Fi feature allows for convenient firmware updates directly over Wi-Fi. Additionally, the receiver offers high telemetry output of up to 100 mW, ensuring that important flight data is transmitted reliably.

With its ultra-light weight of just 1.6 g, compact dimensions, and simple SH1.0 connector, the receiver is perfectly suited for compact FPV builds as well as for demanding long-range platforms. While ordinary receivers are only interested in “receiving signals,” this little beast practically conducts diplomatic peace talks between two frequency bands simultaneously. Radio technology has now reached a point where it almost sounds like science fiction.

Features

• Modern ExpressLRS Gemini Dual-Band System
• Simultaneous 915 MHz + 2.4 GHz operation
• Based on 2× Semtech LR1121 RF chips
• Extremely high signal stability & anti-interference performance
• Supports 915M Gemini, 2.4G Gemini, and dual-band mode
• Up to 1000 Hz refresh rate
• Built-in Wi-Fi for firmware updates
• TCXO oscillator for stable frequency accuracy
• Telemetry power up to 100 mW
• Ultra-lightweight 1.6g design
• SH1.0 plug-in system for easy installation
• Compatible with single-band ELRS TX modules
• Ideal for racing, freestyle, and long-range applications

Technical Specifications

General

• Model: GEPRC ELRS 915M/2.4G C3 Gemini Xrossband Receiver
• Type: Dual-band ExpressLRS receiver
• Firmware: GEPRC C3 900/2400 Gemini Xrossband RX

Chips & Hardware

• Processor: ESP32-C3
• RF Chips: 2× Semtech LR1121
• Crystal Oscillator: TCXO (temperature-compensated)

Frequency ranges

• 915 MHz Gemini
• 2.4 GHz Gemini
• 915 MHz + 2.4 GHz dual-band

Transmission Power & Speed

• Refresh Rate: 25 Hz – 1,000 Hz
• Modulation: LoRa / FSK
• Telemetry Power: up to 100 mW

Supported Protocols

• CRSF
• SBUS
• SUMD
• DJI RS2 Pro
• MAVLink

Connections

• Antenna connector: ipex1
• Connection cable: SH1.0 4-pin

Electrical Specifications

• Operating voltage: 5V

Dimensions & Weight

• Dimensions: 18 × 23.6 × 5.7 mm
• Weight: 1.6 g (receiver only)