Overview
The GEPRC LINKFLOW 915M 2W ELRS TX Module is a TX Module based on the ExpressLRS open-source project. Built on ExpressLRS 3.5 with a standard JR-bay design, it operates on the 868/915MHz band and delivers up to 2000mW (2W) output power for powerful transmission and versatile connectivity. It includes active fan cooling with a heat sink, plus a built-in temperature-compensated crystal oscillator (TCXO) to reduce frequency drift from overheating, ensuring a more stable signal and safer flights.
A custom 868/915MHz Moxon antenna is designed for higher gain and a stronger, more reliable connection. The built-in backpack module supports versatile device integration with FPV goggles, AAT, and more, enabling wireless Mavlink communication and new possibilities. A reserved UART port is provided for relay use or 2W telemetry receiver conversion. The module supports 2-6S power input via an XT30 connector and firmware updates via USB or WiFi.
Key Features
- Up to 2W output on 868/915MHz (915MHz FCC / 868MHz EU)
- Standard JR-bay (JR-Bay) module design
- Active cooling: built-in efficient fan + heat sink for stability at maximum power
- Built-in TCXO to help prevent frequency drift from overheating
- Custom high-gain 868/915MHz Moxon antenna
- Built-in backpack module for peripheral/device connectivity (supports wireless Mavlink communication)
- Reserved UART port for relay use or 2W telemetry receiver conversion
- 2-6S external power input (XT30)
- RGB status indicator / RGB light
- Firmware upgrade via USB or WiFi (WiFi firmware upgrade)
For compatibility questions (radio bay fitment, antenna type, or firmware update help), contact support@rcdrone.top or visit https://rcdrone.top/.
Specifications
| Model | GEPRC LINKFLOW 915M TX Module |
|---|---|
| Operation Band | 915MHz FCC / 868MHz EU |
| Module Type / Bay Type | JR-Bay / JR-bay |
| Main Chip / MCU Chip | ESP32 |
| Backpack Chip | ESP8285 |
| RF Chip | SX1276 |
| Output Power | 2000mW (2W) |
| Oscillator | TCXO |
| Refresh Rate | 25Hz-200Hz |
| Antenna Connector | SMA |
| WiFi Support | Yes |
| Bluetooth | Yes |
| RGB | Yes |
| Power Supply | 2-6S |
| Weight | 62g (without antenna) |
| Firmware | GEPRC LINKFLOW 900M TX |
What’s Included
- LINKFLOW 915M TX Module x 1
- 868/915MHz Moxon Antenna x 1
- GH1.25 3pin connection cable x 1
- User manual x 1
Applications
- ExpressLRS 868/915MHz radio control link setups using a JR-bay radio
- FPV system integration via backpack module (FPV goggles, AAT, and wireless Mavlink communication)
- Relay setups or UART-based expansions using the reserved UART port
Details

GEPRC LINKFLOW TX Module pairs an 868M/915M Moxon antenna with auto fan cooling and features like JR-Bay, ELRS3.5, Backpack, and TCXO, with up to 2W power.

GEPRC LINKFLOW ELRS TX module supports up to 2W output on 868/915MHz for stronger signal and extended range.

An integrated fan and heat sink help dissipate heat to keep the LINKFLOW RF module running stable at higher power levels.

The built-in TCXO helps maintain a more stable 868/915MHz ExpressLRS signal by reducing frequency drift as temperatures change.

The GEPRC LINKFLOW ELRS JR-bay TX module pairs with a custom 868/915MHz Moxon antenna via an SMA connector for a clean, simple setup.

A built-in backpack module enables wireless MAVLink communication with compatible FPV goggles, AAT, and other devices.

A fully reserved UART port provides a dedicated connection for relay use or telemetry receiver conversion.

The LINKFLOW JR-bay ExpressLRS TX module supports 2–6S power input, WiFi firmware updates, and an SMA antenna connector for setup flexibility.

GEPRC LINKFLOW 915M JR-bay TX module specs include 915/868MHz operation, 2000mW power, SMA antenna connector, and WiFi/Bluetooth support.

The GEPRC LINKFLOW JR-bay ELRS transmitter module features an SMA antenna connector and a vented front fan for cooling.

The GEPRC LINKFLOW 915M JR-bay ExpressLRS TX module features a top SMA antenna connector and a built-in cooling fan for sustained operation.

The GEPRC LINKFLOW ELRS TX module pairs a fan-cooled case with an SMA-connected 868M/915M moxon antenna for a clean radio setup.

The kit includes the LINKFLOW 915M TX module, an 868/915MHz Moxon antenna, a GH1.25 3-pin connection cable, and a user manual.
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