Oh, side note, many transmitters can transmit in FM or in PCM modes with just a change of a setting on the transmitter. The receiver, on the other hand, is either one or the other (at least I'm not aware of any switchable receiver). So, there's nothing wrong with getting a PCM-capible transmitter and using it in FM mode with FM recievers until you decide you actually want to go buy a PCM receiver. If you have the money to spend, getting a nicer radio now can be nice, but if you're on a budget, don't bother.