GEPRC LINKFLOW Dual-Band TX Module - 915M/2.4G, 1000mW, LR1121, TCXO

Product Description

Next-Generation Dual-Band ExpressLRS Transmitter Module
Developed by the GEPRC team based on the open-source ExpressLRS project, the LINKFLOW 915M/2.4G DUAL-BAND TX Module delivers advanced dual-band communication performance. Built around the Semtech third-generation LR1121 RF chip and featuring up to 1000mW output power, TCXO stability, and active cooling, this JR bay module is the ultimate choice for long-range and mission-critical FPV pilots.

Features

1. Next-gen ExpressLRS TX module that features a standard JR bay design
2. Built on Semtech’s third-generation LR1121 RF chip
3. Supports 868M/915M, 2.4G operating mode
4. Up to 1000 mW output power
5. Active cooling with a built-in high-speed fan
6. Equipped with a temperature-compensated crystal oscillator (TCXO) for stable performance in extreme temperatures
7. Integrated backpack chip for enhanced peripheral interaction
8. Reserved UART port for repeater use or high-power receiver configuration
9. Supports 2–6S external battery input
10. RGB LEDs for system status indication
11. Easy firmware updates via USB or WiFi

Specifications

• Model: GEPRC LINKFLOW 915M/2.4G DUAL-BAND TX Module
• Operation Bands: 915MHz(FCC),868MHz(EU),2.4GHz(ISM)
• Module Bay Type: JR Bay
• Main Chip: ESP32
• Backpack Chip: ESP32-C3
• RF Chip: LR1121
• Output Power: 1000mW
• Oscillator: TCXO
• Refresh Rate: 50Hz-500Hz(LoRa),1000Hz(FSK)
• Antenna Connector: SMA
• Wi-Fi: Supported
• RGB Indicator: Supported
• External Power: 2-6S
• Weight: 60g(without antenna)
• Firmware: GEPRC LINKFLOW 900/2400 Dual-Band TX

Performance Highlights

• Long-Range Ready – 1000mW power ensures reliable control at extreme distances

• Frequency Stability – TCXO maintains precision across temperature variations

• Thermal Management – Active cooling sustains high-power output

• Versatile Configuration – Repeater mode or high-power receiver options

Applications

• Long-Range FPV – Fixed-wing and quadcopter exploration

• Mission-Critical Operations – Search and rescue, industrial inspection

• High-Interference Environments – Dual-band redundancy for reliable link

• Extreme Weather Flying – TCXO stability for temperature-variable conditions

Why Choose LINKFLOW?

✅ True Dual-Band – Seamless switching between 915M and 2.4G
✅ Maximum Power – 1000mW for unbeatable range
✅ Thermal Excellence – Active cooling prevents thermal throttling
✅ Future-Proof – Backpack chip and UART for expanded capabilities
✅ Open-Source Backed – Built on ExpressLRS ecosystem

Package Includes

• 1 × LINKFLOW 915M/2.4G Dual-Band TX Module

• 1 × 915M/2.4G Dual-Band T-Antenna

• 1 × GH1.25 3-Pin Cable

• 1 × Metal Dust Filter Mesh

• 1 × User Manual