The VEX Signal Splitter is a 'No Brainer'. This control component can be used to drive up to (6) PWM devices, including VEX Continuous Rotation Motors & VEX Servos. Since this device is capable of directly taking the signal output from the VEX Receiver Module and driving motors/servos, it is now possible to build robots without the VEX Microcontroller. This module is not programmable and must be used with the VEX Transmitter and Receiver.

Coupling this with a $10 transmitter has got to make it the most attractive RC system available to us!!  $30

http://www.mpja.com/prodinfo.asp?number=17044+MI

Andy