Why Does My FPV Video Signal Break Up When I Bank My Wing?

Question: Why does my FPV video break up when I bank the wing?

Answer: When you bank your wing, the FPV video can break up due to changes in antenna orientation and signal obstruction. The video transmitter (VTX) antenna and the receiver antenna rely on clear, line-of-sight signals. Banking can cause the antennas to become misaligned or partially blocked by the airframe or other components, weakening the signal.

To improve your video feed:

1. Check your VTX antenna position; ensure it is mounted vertically and clear of obstructions.
2. Use a high-quality, circularly polarised antenna on both the VTX and receiver to maintain signal strength during manoeuvres.
3. Consider installing a diversity receiver with two antennas placed at different angles to reduce dropouts.
4. Ensure your VTX power output suits your flying environment—too low reduces range, too high causes interference.
5. Test flying in an open area to rule out external interference or obstacles blocking the signal.

Improving antenna placement and using circular polarisation are usually the most effective steps to keep your FPV video stable while banking your wing.