An OFDM communication apparatus that can set an optimum repetition number to data to be transmitted, thereby improving the error rate characteristic and hence the communication quality. At least one tool pair comprises an inner tool that is movably guided within a hollow space in longitudinal direction of the jacket body and an outer tool that is movably guided outside the hollow space defined in longitudinal direction. Network-accessible software enables integrated modular function for automated control and provision of fuel cell resources for telematic appliance andor other vehicle electro-mechanical devices. A linkage is pivoted on the main frame to press a free end of the plate. Moisture barriers are formed by either a metal foil, or a metallized polymer in which the metallization thickness is at least 178 Angstroms thick.