Originally Posted by Peter64
Pattaya01 thanks for the reply
No just the one RX but I haven't even got the unit in a plane at the moment, it is sitting on my desk plugged in with the USB dongle. I would think when you check the box for Fixed–Altitude Flight Mode or Fixed-Heading Flight Mode and hit confirm something would happen. ie that "system prompts success" they state in the PDF (whatever that even means). My CGS sits there with the nav_conf box open and does nothing until I hit exit. When I open the box again the Navigation check box is still checked. I would have thought if indeed the unit has switched to either one of the other modes that box would be checked.
Maybe that is the problem. I think you need to have GPS connected and have a fix on the satellites and need to be moving so that the 31 knows where he is and the heading. Seems logical to me if you have no speed, altitude and heading, there cannot be a heading hold.