The current MinimOSD (1.1) emits a lot of UHF noise (around 433mhz) from the built in switching regulator. Much more than all the other 5V step down regulators I’ve got lying around.
When I disable the regulator on the board (by removing the diode near the video connectors) and power both sides from the APM side, then this noise is greatly reduced. However there still is some UHF noise being emitted. From what that is, I don’t know.
This is annoying for anyone wanting to use MinimOSD with UHF RC, especially on compact platforms where seperation is difficult to achieve.