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Video transmitter · FD-VTX-2W5
Fiodel 2.5W VTX
2.5 W analog 5.8 GHz video transmitter that runs straight from a 2–6S battery, cooled by its own heatsink and fan.
Pre-order — ships from end of November 2026
- Full refund if you cancel any time before dispatch
- 6-month warranty against manufacturing defects
- GST invoice with every order
- Up to 2.5 W output; 25 / 200 / 600 / 1600 / 2500 mW and pit mode
- Direct 2–6S battery input with reverse-polarity protection
- SmartAudio control, plus two on-board buttons
- MMCX antenna connector on a 50 Ω controlled-impedance line
- Heatsink and fan fitted
- 40 × 26 mm
Questions before you order? Ask us on WhatsApp
Overview
The Fiodel 2.5W VTX is a long-range analog 5.8 GHz video transmitter. Its power amplifier delivers up to 2.5 W (+34 dBm) into an MMCX antenna connector over an impedance-controlled 50 Ω line.
It takes power straight from the flight battery, 2S to 6S, through reverse-polarity protection and its own 5 V buck converter. The RF section has its own low-noise regulator. An STM32G431 handles channel and power changes over SmartAudio from the flight controller, or from the two buttons on the board.
Heat is designed in, not added on: the board ships wrapped in a heatsink with a fan powered from the board, and a bare-copper window under the power amplifier couples it directly to the metal.
Specifications
RF
| Type | Analog FM video transmitter, 5.8 GHz band |
|---|---|
| Output power | 25 / 200 / 600 / 1600 / 2500 mW, plus pit mode |
| Peak output | +34 dBm (2.5 W) |
| Antenna connector | MMCX |
| Video input | Composite, 1 Vpp, 75 Ω |
| Audio | None (no microphone) |
Control
| Protocol | SmartAudio, single wire |
|---|---|
| MCU | STMicro STM32G431 |
| Buttons | 2 |
| Indicators | Green and red LEDs |
Power
| Input | 2–6S battery, 7.4–25.2 V |
|---|---|
| Consumption | About 13 W at full power — roughly 0.6 A on 6S, 1.0 A on 4S |
| Protection | Reverse-polarity P-FET and TVS diode |
| Regulators | TI LMR51430 5 V buck; TPS7A2033 low-noise 3.3 V for the RF section |
| 5 V output | On pin 1 of the connector, for a camera |
Board and cooling
| Size | 40 × 26 mm (board) |
|---|---|
| Construction | 4-layer, 1.0 mm, controlled impedance, ENIG finish, black solder mask |
| Cooling | Heatsink wrap with fan, fitted; fan powered from the board's 5 V |
Pinout
J5Power, video and controlJST-SH 6-pin, 1.0 mm
Fiodel pinout — use the supplied cable.
| Pin | Signal | Detail |
|---|---|---|
| 1 | +5 V out | For a camera. Never feed voltage into this pin |
| 2 | GND | |
| 3 | Video in | |
| 4 | SmartAudio | |
| 5 | GND | |
| 6 | Battery in | 2–6S |
J1AntennaMMCX
| Pin | Signal | Detail |
|---|---|---|
| RF | 5.8 GHz output |
Questions
- Does the OSD still work?
- Yes, as long as the video comes from the flight controller's video-out pad. A camera wired straight to the transmitter bypasses the OSD.
- Can I run it from my flight controller's 10 V rail?
- No. At full power it draws about 13 W, more than a flight controller's VTX rail and connector are built for. Wire it to the battery.
- When will it ship?
- This is a pre-order. Shipping starts end of November 2026, in the order pre-orders were placed. You can cancel for a full refund any time before your order is dispatched.
