RE: 14MZ and Schulze Receivers?!?!
ok. crash course.
PPM, or FM. straight analog signal. in essence the reciever passes exactly what it hears onto the servos. some are better at rejecting noise than others and i'm not going to argue or explain the noise rejecting feature and properties of assorted recievers. they just do. trust me.
PCM. a digital signal that is interpreted by the reciever and then passed on to the servos, and is a two edged sword. you can only use it with the same make recievers as you tx, with a few exceptions. you will not glitch. you will lockout (however this is unlikely). if you do experence noise, everything will just stop. that's bad.
anyway long story short the tx transmits a series of pulses on a Frequency miodulated bandwidth, which is either PPm of PCM.
you need a different reciever for each, but most Txs are selectable. if you are unsure, check your Tx is on PPM, or analgog transmission.