Ah now I understand. Yes, the RSSI value you can display in the OSD seems to have no input value either.
Although initially disappointing, the lack of RSSI or telemetry in general didnt bother me much yet, because the range of the receivers brings me so comfortably to the edge of my video reception that I consider installing some directional antennas.
I dont understand the arming angle issue. Can you describe when and where you are seeing that?