An electronic system is disclosed for RF signals, and comprises coaxial interconnection systems for interconnection with a printed circuit board and which provides an interface with the printed circuit boards. The system responds to receiving an indication by choosing for the gearbox a gear among various possible gears which causes the engine to reach a desired speed \u03c9KD in a shorter time than with any other gear from among the various possible gears. As a result, signal transmission is more efficient and master-slave control is more responsive.