good day

I am working ds 24 (version 4.28) with:

2 x R3 primary and secondary receiver (serial link ex bus, out period: auto failsafe: disable)
1 x 900 Mhz
1 x cb200 (out period: auto Ext: receiver Rx 1 and 2 EX bus L Pin14 telemetry Pin 15: EX bus for CTU Failsafe: enable Shorted Output No1)
1 x CTU (frames CRC error RX 7)
1 x Bavarian demon (firmware version 2.0 Servo type Digital 333hz all servos Mks 747)

when I go to device explorer I see

1 R3 EX
2 CORTEX PRO (1)
3 CBOX200 (1)
4 CTU (2)
5 R3 EX
6 RSAT 900

not all time are stable usually some device disconnected, some times when i want to enter to device it disconnects and some second latter it apear again, I see signal 100%. tomorrow morning I will fly but I don’t know if is secure fly in this condition.

I appreciate your help with some idea about that

thanks