Are you trying to configure this in ?
Many VTXs come "locked" to legal frequencies/power. You must apply an unlocked table or use the manufacturer’s instructions to unlock it, otherwise, you cannot use high-power modes. Reboot: Always save and reboot after applying a VTX table. To get you the exact answer, I need to know: What is the exact model of your VTX ? What protocol are you using (SmartAudio or IRC Tramp)? vtx-tables
Defines available power output, mapping mW (e.g., 25, 200, 800) to dB values. Why You Need Them Are you trying to configure this in