Building a custom radio control transmitter requires two main electronics subsystems; an encoder to read the joystick signals and all the various switches and generate a signal to transmit this information, and an RF deck to send the information to the receiver. In addition a physical transmitter (case, switches, batteries, etc) is needed, generally builders are upgrading there favorite old systems using the MicroStar 2000 electronics found on this site.
MicroStar Developer
The MicroStar project is NOT a commercial project! This is a hobby, largely managed by one person as a part time activity, as a result new developments and revisions are released as time is available. If you are looking for fully supported professional products then you are in the wrong place. This information is intended for the few modelers who are interested is doing something a little different!