The Complete Guide to RC Electronics: 8 Steps (with Pictures) Where to Procure Components. After much research, i have found the following to be reliable, have Transmitter. Also often abbreviated as Tx, this is the thing that actually takes your commands and The Reciever. The receiver, abbreviated as Rx, receives the signals of the transmitter, and sends Servos. Servos are geared motors connected to potentiometers that are usually capable of 180 See all full list on instructables RC Radio Extension Wires | RC Planet Wire - RC Radio Extension Wires radio control parts and accessories at RC Planet. Your one stop radio control hobby store.