Overview
DarwinFPV 25/200/400/600mW VTX is a lightweight 5V FPV video transmitter (VTX) with an integrated 4-pin socket for convenient plug-and-play wiring. Output power, frequency band, and channel can be adjusted through the flight controller using SmartAudio (OSD tuning supported).
Key Features
- Adjustable output power: 25mW / 200mW / 400mW / 600mW
- 5V input; current consumption: 600mA (can be powered from the flight controller 5V)
- SmartAudio protocol for VTX control and OSD parameter tuning
- Integrated 4-pin socket
Specifications
| Name | DarwinFPV 600mW VTX |
| Output Power | 25/200/400/600mW (adjustable) |
| Frequency | 5.8Hz 40port |
| Power Supply Voltage Range | 5V |
| Power Consumption | 600mA |
| Weight | 3.5g |
| Size (L x W) | 28 x 15mm |
| Protocol | SmartAudio |
Frequency and Power Control Method
Adjust VTX frequency and power via Betaflight:
- Connect the RX (white) line of the VTX to the TX signal line or SOFTSERIAL1 signal line of the flight controller’s spare UART port.
- In the Ports tab, enable the TBS (SmartAudio) function for the connected port and save.
- Enter the VTX parameter adjustment interface, choose the desired frequency and power, then select “save” to save and exit.
Betaflight VTX options shown include: Selected Mode (Enter frequency directly), Band (FATSHARK), Channel (Channel 1), Power (600), Pit Mode, Pit Mode frequency (0), Low Power Disarm (Off).
What’s Included
- 1 x DARWINFPV 600mW VTX
- 1 x Spare screw pack
- 1 x 3cm 4Pin wire
- 1 x Sticker
For setup and wiring support, contact support@rcdrone.top or visit https://rcdrone.top/.
Details

Adjust band, channel, power level, and pit mode from Betaflight OSD using SmartAudio for quick VTX tuning.
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