Here goes, I have been flying a twinstar with an FY21AP auto pilot and 100mW 5.8Ghz video with no problems for 6 months. The other day while testing a 500mW 5.8Ghz video TX I found the RTH failed to work. The Futaba FASST dose not have a failsafe so I made one using PICs which again has been working fine. I should point out it uses the LED on the RX to trigger the PIC into failsafe.
When I checked the on board video I could hear the motors failed to run as they should have gone to half throttle. I checked the failsafe on the ground and it worked perfect. I tried moving the 500mW TX about and holding it near different bits to see if it would make it fail but no.
I flew a few more times with both the 100mW and the 500mW TX and it seems that with the 500mW the RTH dose nothing at all and with the 100mW it returns but the motors cut in and out. This may not be correct but its how it seems at the moment.
Has anyone else had odd effects when using 5.8Ghz or the FASST system?
Edited by Terry, 30 March 2011 - 06:42 AM.