A navigation system of a motor vehicle has an input unit, a position-determining unit, a central processor unit for calculating a route between a first and a second location by reference to map data which contains information for determining a predicted fuel consumption for the route, and an output unit for outputting travel instructions which are matched with the current position of the vehicle. A process is herein disclosed for fractionating sugarcane bagasse into cellulose, hemicellulose and lignin with high purity \u03b1-cellulose, which is a useful raw material for preparing cellulose esters like cellulose triacetate and other high value-added cellulose plastics. At least portions of the coil transducer are formed of an electrically insulating, non-metallic, non-semiconductor, low dielectric loss material. A third solenoid operated valve connected to the pilot valve body when energized and when both the first and second solenoid operated valves are de-energized directs the fluid to move the pilot valve to the pilot valve open position and the main valve member to the valve closed position. Feedback can be reported jointly as one wide bandwidth. More specifically, the present invention relates to a system adapted to modify at least one signal in anticipation of channel attenuation and delay.