HAPPYMODEL
Happymodel OVX300 OVX303 5.8G 40ch 300mw VTX Open Video Transmitter - OVX303
Reviewed byOrganicDiscount TeamUpdated 4 Jun 2026
Best price available
£23.27
Product Overview
Happymodel OVX300 and OVX303 VTX are based on the Open source project OpenVTX powered by JyeSmith (EpxressLRS team) 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 SA 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. Main FeaturesOpenVTX firmware preloadSmartaudio readyNano size and stable power output Specification：Model: OVX300Frequency: 5.8G 40CHTransmitting Power: 0/RCE/25mw/100mw/300mwPower supply: DC 5V Current (5v): <650ma (300mw) Weight: 0.9gram without antennaStandard size: 14*15*3mm Model: OVX303Frequency: 5.8G 40CHTransmitting Power: 0/RCE/25mw/100mw/300mwPower supply: DC 5V Current (5v): <650ma (300mw) Weight: 1.5gram without antennaCenter distance of mounting holes: 16mmx16mm20mmx20mm25.5mmx25.5mm
Good to Know
Must work together with a flight controller that supports Smartaudio or Tramp
What's in the Box
1*Happymodel OVX300 Or OVX303 VTX
Pros & Cons
Cons
- Currently sold by only one merchant — limited price competition
- No customer reviews yet
- Price history not yet established
Price Analysis
Fair Price
The current price is around the average. It's a reasonable time to buy.
Current Best
£23.27
Average Price
£23.27
Lowest Ever
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Highest Ever
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Compare Prices (1 merchant)
Compare prices for Happymodel OVX300 OVX303 5.8G 40ch 300mw VTX Open Video Transmitter - OVX303
| Merchant | Price | Shipping | Total | Status | |
|---|---|---|---|---|---|
Ma Makerfire Best Price | £23.27 | — | £23.27 | Out of Stock | Go to Store |
Price Alert
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Product Details
| Brand | HAPPYMODEL |
| Merchant | Makerfire |
| MPN | 6815451 |
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