Review: Runcam TX200U VTX – With Tramp Telemetry!

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.

The TX200U VTX is available from Banggood | GetFPV | Amazon. See my review of the TX200.

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.

TX200U VTX on the back of the Micro Swift 3 FPV camera

TX200U VTX on the back of the Micro Swift 3 FPV camera

TX200 VTX in a tight ultralight racing drone

TX200 VTX in a tight ultralight racing drone

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).

It comes with a 2dB Omni-directional antenna with U.FL connector. You can change it out for other types of antennas of your choice, such as the Trident (http://bit.ly/2J1sy7a).

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.

Unlocking

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.

Betaflight OSD TX200U
25mW 25mW
100mW 25mW
200mW 200mW
400mW 200mW
600mW 200mW

 

4 thoughts on “Review: Runcam TX200U VTX – With Tramp Telemetry!

    1. Oscar Post author

      probably but even if it does you will need a voltage booster to convert 1S to 5V. Not recommended for Tiny Whoops.

      Reply

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