Are you looking for a true "SAFE" mode with limits on pitch and bank and panic recovery to level flight, or do you just need AS3X stabilization to tame the wind gusts? If you just need AS3X, then I might suggest the line of reasonably priced Lemon receivers with stabilization and telemetry. Here is a link to a 7 channel Lemon that might work. https://www.altitudehobbies.com/coll...sm2-compatible

I have used several Lemon receivers over the years and have found them to work well and are totally compatible with Spektrum telemetry transmitters.