RC transmitter takes important role in radio control hobby, they divide in two main usage system, surface and air radio system, do not use it in opposite from what it design for, since it can be dangerous for other. Nowadays many manufacturers offer advance technology in their product that make our hobby life much more easier than before, some were affordable for most person, but some were very expensive maybe have features that not quite usable for your application. Therefore proper select the tx that suit your application can save your pocket in the long run.