Richard new problem and I noticed this before the telemetry lead was connected to Cockpit so makes no difference.
I have two tailplane matched servos in Hawk and this is in done on ‘B’ channel the settings are still perfect after software update with servos perfectly matched, no noise no current fighting each other etc
I leave Core Tx alone well away from Jet 4m at least even put Tx in house whilst I am in workshop and every now and then I hear the tailplane servos ‘jump’ or a small thud noise also sometimes I see a quick 2mm-3mm deflection on tailplane (I am nowhere near the Tx stick.
Also the low loss Jetronic brake valve is in ‘C’ and suddenly I hear quick two pulses of brake valve
The Tx / Rx has been switched on around 35min and just as I am writing this I have just had tailplane blip again!
Just for info in ten years of having Cockpit > FASST never had this happen so is it problem with output of Expander going to servo Cockpit inputs?
Time it’s taken to write this the tailplane has just blipped twice more....Rudder perfectly still JR8911 also tailplane JR8911 x2
Sometimes servos you can hear a jump noise but small so you see no movement other times it happens you can see deflection...
Battery supply to Cockpit fully charged 2 x A123 2.5A