Happymodel OVX306 Openvtx 5.8GHz 37ch 400mw VTX for Brushed or Brushless whoop

Regular price $27.99 Sale

Availability: Available Unavailable

Product SKU: 49A-6215

Product Details

Happy Model OVX306 VTX is based on the open source project OpenVTX powered by JyeSmith (EpxressLRS team). The size of the OVX306 tx module is the same size as whoop_vtx (25.5x25.5mm) and whoop_vtx_hp. The interface is also exactly the same, which can completely replace whoop_vtx and whoop_vtx_hp.

OpenVTx aims to provide firmware with both the SmartAudio and Tramp protocols. Either protocol can be used on the flight controller and on VTx power up the protocol used is automatically detected by OpenVTx.

Currently SmartAudio is fully implemented and test against Rev. 09. To date IMRC has not released a protocol standard and implementation is based on information found within Betaflight.

More info can be found at the following links:

  • https://github.com/OpenVTx/OpenVTx
  • https://discord.gg/uGUKaD2u8Z
Check out the rest of our Analog Video Transmitters as well as the rest of our Happy Model Collection!


  • OpenVTX firmware preload

  • SmartAudio ready

  • Nano size and stable power output


  • Output power: 0/RCE/25mw/100mw/400mw
  • Frequency: 37CH
  • Input voltage: 5V
  • Current consumption: <650mA(400mW)
  • Antenna: RG178 antenna U.FL interface
  • Frequency: 5.8GHz
  • SmartAudio ready
  • Weight: 2g without antenna
  • Mounting Pattern: 25.5x25.5mm

Package Includes: 

  • 1 x Happymodel OVX306 Openvtx 5.8GHz 37ch 400mw VTX for Brushed or Brushless whoop
  • 1 x Sleeved Dipole Antenna
  • 1 x Wiring Harness Set
  • 1 x Hardware kit

Laws and requirements regarding transmission of radio waves vary greatly across the world. In some countries, this product may not be legal. In the USA, the operator of this product is required by law to have a HAM amateur radio license, at the very least. It is the operator's responsibility to make sure that they are using this product in a legal manner, or not using it at all if not possible to do legally in their location. By adding this product to your cart, you are confirming that you have read this notice, and that Pyrodrone is in no way responsible for the actions of the operator while using this product.

Warranty Policy:

If any defect, warranty, or troubleshooting needs should arise for this product, please be aware that Happymodel requires pilots to reach out to them directly. We must follow the policies set by this manufacturer in order to carry their products. Please make sure to contact them directly if you feel your HM product is defective in any way. If they are not able to help you fix the problem, then they will have us issue you a return shipping label to return the defect, and allow us to send you a replacement. Happymodel support email: info@happymodel.cn