Sounds like someone has been feeding you some info on PCM receivers. They do not possess the plane and do what they want. I have thousand and thousands of flight with Futaba PCM receivers and have yet to have a problem much less a frequency failsafe that possessed the plane and crashed it... I have seen folks flying PPM on the exact same channels as we fly PCM at the same field repeatedly get hit. I cant give you all of the science of why PCM is less prone to be interefered with, it just is by design. There is a difference.

FM is fine,,, and it works great most of the time, there are a lot of people that use FM out there. But there is absoutely no question about the fact that there is an increased risk of getting hit with PPM FM.


Also, as far as the plane doing what it wants because the signal is lost you have two choices. You can fly PPM, and if the signal is lost the plane is going to do whatever IT wants ( actaully it will do whatever then interfereing frequency drives it to do.) or you can go pcm and setup the failsafe to tell it what YOU want it to do if the signal is lost. Typically I set my PCM failsafe up for safety. which is all that matters if I lose control.. Engine to idle and all controls level is where I set mine up... An even safer sacrificial thing to do is set it for engine idle, full up, full left rudder, full right aileron and just let it snap into the ground.. That way you know its not going to fly off away from your flying site. It pretty much going to go straight into the ground.