First let me say I've connected the switcher using a ubec feeding a X8R and 2 cameras and it switches between both no issue so I know my connections are correct. I move this over to my quad and connect to aux port 4(channel 12) on the pixhawk. Program my tranis radio mixer for channel 12 for a 3 position switch and I only get channel 1 camera to show . Does not switch. I know it's in my radio set up but can't figure it out where. I've tried various ports on the pixhawk and reset my radio for that channel. Nothing so far works. If someone could provide the steps for setting up my radio to use a switcher would be very much appreciated. I've looked over the web for such information with no luck. In case I'm asked the power off the pixhawk is 5 volts. The switcher which is a Hobby King 3 channel video switcher.