FPV Video Transmitters (VTX)

Analog or Digital HD VTX - Find Your Transmitter

The Video Transmitter (VTX) is a key component of the FPV system, responsible for wirelessly transmitting the video feed from your drone's camera to your goggles. Choosing the right VTX greatly impacts image quality, range, and transmission stability. At Avifly, we offer transmitters for both major technologies:

Analog VTX Transmitters: Proven technology offering a wide selection of models with varying output power (from 25mW to over 1W – remember legal limits!), sizes, and antenna connectors (MMCX, U.FL, SMA). Many modern analog VTXs support protocols like SmartAudio or Tramp, allowing remote control of channel and power output via the RC transmitter (through Betaflight OSD). Popular brands include RushFPV, Foxeer, EWRF.
Digital HD VTX Transmitters: Components of digital FPV systems (DJI O3 Air Unit, Caddx Vista/Nebula Pro for DJI, Walksnail Avatar, HDZero). They transmit high-definition (HD) video to compatible digital goggles. Often available as camera-integrated modules or separate units. Key brands include DJI, Caddx (for Walksnail Avatar), RunCam (for HDZero/DJI).

Important: Use the filters available on this page to easily find an analog or digital VTX that matches your system (DJI, Walksnail, HDZero) and needs.

What to Look for When Choosing a VTX Transmitter?

When selecting a VTX for your drone, consider the following parameters:

System Compatibility: Crucial! An analog VTX works with analog cameras and goggles. A digital VTX must be compatible with your HD system (DJI, Walksnail, or HDZero) and goggles.
Output Power: Measured in milliwatts (mW). Higher power (e.g., 400mW, 800mW, 1W+) potentially means longer range, but also higher current draw and heat generation. Many VTXs have adjustable power. Always check and comply with local regulations regarding allowed transmission power!
Control Protocol (for analog VTXs): Support for SmartAudio (TBS) or Tramp (ImmersionRC) allows convenient changing of VTX channel and power via the OSD menu in your goggles (controlled from the RC transmitter). This is a very useful feature.
Antenna Connector: The most common are MMCX and U.FL (IPEX) - small and light, but more delicate. Sometimes larger SMA/RP-SMA are also found (directly on the VTX or on a pigtail). It must match your FPV antenna.
Size / Mounting: VTXs come in various sizes, often with standard mounting holes (20x20mm, 25.5x25.5mm for Whoop/Toothpick, or 30.5x30.5mm). Ensure it fits in your frame.
Cooling: VTX transmitters (especially high-power ones) generate significant heat. Ensure adequate airflow in the drone frame or choose a model with a good heatsink.
Input Voltage: Check if the VTX can be powered directly from the LiPo battery (VBAT) or requires regulated voltage (e.g., 5V) from the flight controller or a BEC.

Need Help Choosing a VTX? We're Experts!

A good video transmitter (VTX) guarantees a stable and clear image in your FPV goggles. Wondering whether to choose an analog VTX with SmartAudio protocol or invest in a digital HD system? What transmission power should you choose for optimal range according to regulations? Which antenna connector (MMCX or U.FL) is better?

At Avifly, we know FPV video systems inside out. We'll gladly help you choose the VTX perfectly suited to your camera, goggles, and needs. Contact us via the Contact Us page.

We offer a wide selection of VTXs from leading manufacturers like RushFPV, Caddx (Walksnail), RunCam, available with fast shipping from our warehouse in Poland.

Ensure a clear and stable video signal with VTX transmitters from Avifly! 📡📺