Ok here's the situation I have a spektrum radio (dx3s) and receiver and with everything off, I turned on the receiver switch and the failsafe kicked on for brakes.. When I turned on radio the throttle link went into its neutral position.. With both rx and tx powered on I shut off the radio and failsafe kicks on for brakes again... Sounds great and how I want it to be...however on my airtronics (mx-3fhss) radio/receiver with everything off I turn on my receiver switch and I don't have the fail safe for brakes.. I only have it when both are powered on and I shut radio off..my question is how come I don't have fail safe on the airtronics when I power up the receiver with radio still off like the spektrum does... Any ideas??