I absolutely loved the Runcam TX200 VTX, and now it’s just got even better! The new TX200U an upgrade with VTX Control feature added. In this review we will take a look at it closely.
Further Reading: How to choose a VTX for mini quad
The reason I like the TX200 so much is because I can mount it directly on the back of my micro FPV cameras. It makes a really compact FPV solution, especially useful for tight builds. And it’s super light weight too.
Signal quality is decent for racing in short distances and it has been reliable for me when flying together with 2 to 3 other pilots.
TX200U VTX Spec
- Frequency & Channels: 5.8G 48CH
- Output Power: 25mW / 200mW
- Input Voltage: 3.5V – 5.5V (or 1S LiPo)
- Output Voltage (BEC): 5V/250mA max
- VTX Operation Current: 5V/150mA
- Weight: 2.5g (with antenna)
- PCB Size: 19mm*19mm
- Price: $18
Close Look at the TX200U
The Runcam TX200U VTX comes with a spare 3-pin cable, 3 screws and standoffs for mounting the VTX on the back of a Micro FPV camera (one spare each).
The cables are pre-soldered on the VTX with connectors, you can just cut them off if you want to direct solder to your FC.
There is a button for changing channels, bands and power of your VTX, and an array of LED’s to indicate your current VTX settings.
The mounting hole pattern of the VTX is designed specifically for Runcam’s own micro cameras. I tried the TX200U on some Foxeer’s camera and found the holes don’t match perfectly. It might fit if you push and tilt the standoffs slightly outwards.
You might ask, isn’t the wiring going get messy if we want to use Betaflight OSD and have to connect both the camera and VTX to the flight controller?
It would give you the cleanest wiring if you connect the TX200U directly to the FPV camera. But I don’t think it makes it any messier than using any other standalone VTX.
Same as the previous version, the Runcam TX200U video transmitter has lock mode enabled by default. The output power is limited to 25mW, and the available channels are all within the spectrum between 5725MHz and 5875MHz.
As shown in the following diagram, the orange channels are NOT available in lock mode.
However you can “unlock” it if you wish, this will enable 200mW and all the channels in the 6 supported bands.
Further Reading: Here is some more information about the channels in 5.8GHz for FPV
How to tell which mode I am in?
- Lock mode – the red LED flashes
- Unlock mode – the red LED stays on
How to unlock TX200U?
You can switch between the two modes by holding down the button for 10 seconds.
TX200U VTX Control
You can connect the TX200U video transmitter to your transmitter, and change VTX settings in Betaflight OSD or via LUA script, such as channels and power.
Further Reading: You can learn more about VTX control in this tutorial
The TX200U uses Tramp Telemetry (NOT Smart Audio), so make sure you select the correct protocol in Betaflight’s Ports tab.
The button on the VTX will also be disabled when you are using VTX Control.
Note that because the TX200U only has 25mW and 200mW, you might be able to select some other power options in the menu, but it won’t actually do anything.