GEPRC LINKFLOW 915M/2.4G Dual-Band TX Module for FPV

GEPRC LINKFLOW 915M/2.4G Dual-Band TX Module for FPV

Product description

The next-generation LINKFLOW 915M/2.4G DUAL-BAND TX module, developed by the GEPRC team based on the open-source ExpressLRS project, is now officially on the market.

It features a standard JR Bay form factor and is based on Semtech’s third-generation LR1121 RF chip, which supports the 868/915 MHz and 2.4 GHz frequency bands, delivering advanced dual-band communication performance.

With a maximum output power of up to 1000 mW, combined with a speed-adjustable fan for efficient heat dissipation, the module effectively reduces the operating temperature during high-power transmission.

A TCXO is used to minimize frequency drift caused by temperature changes, thereby ensuring long-term system stability and reliable performance.

The module integrates a backpack chip that enables connection to various peripheral devices and expands its functional capabilities. It also features a reserved UART port, allowing the module to be used as a communication repeater or configured as a high-performance receiver.

Furthermore, the LINKFLOW 915M/2.4G DUAL-BAND TX module features RGB LEDs to indicate system status, an XT30 power input that supports 2–6S, and enables firmware upgrades via USB and Wi-Fi, ensuring flexible and user-friendly operation.

Features

1. Next-generation ExpressLRS TX module with standard JR Bay design
2. Based on Semtech’s third-generation LR1121 RF chip
3. Supports 868 MHz, 915 MHz, and 2.4 GHz operating modes
4. Up to 1000 mW output power
5. Active cooling with integrated high-speed fan
6. Equipped with a temperature-compensated crystal oscillator (TCXO) for stable performance at extreme temperatures
7. Integrated backpack chip for improved interaction with peripheral devices
8. Dedicated UART port for use as a repeater or for configuration as a high-performance receiver
9. Supports external battery inputs of 2–6S
10. RGB LEDs for displaying system status
11. Easy firmware updates via USB or Wi-Fi

Specifications

• Model: GEPRC LINKFLOW 915M/2.4G Dual-Band Transmitter Module
• Operating frequency bands: 915 MHz (FCC), 868 MHz (EU), 2.4 GHz (ISM)
• Module slot type: JR slot
• Main chip: ESP32
• Backpack chip: ESP32-C3
• RF chip: LR1121
• Output power: 1000 mW
• Oscillator: TCXO
• Update rate: 50 Hz–500 Hz (LoRa), 1000 Hz (FSK)
• Antenna connector: SMA
• Wi-Fi: Supported
• RGB display: Supported
• External power supply: 2–6S
• Weight: 60 g (without antenna)
• Firmware: GEPRC LINKFLOW 900/2400 Dual-Band TX