PIDflight VTx provides a simple interface to adjust your TrampHV or TBS Unify Pro video transmitter settings such as band, channel, power and pit mode. Flight controller firmware supporting VTx control: Betaflight 3. 1. 0. Cleanflight 2. 0. 0. INav 1. 8. 0. ButterFlight 3. 3. 0. Kiss 1. 3RC10 (v1. 09) and above.