A transducing head includes a substrate, a writer positioned upon the substrate, and a reader positioned adjacent the writer. The antenna includes two coplanar concentric patches. This causes the interference emitted by the high pressure gas discharge lamp to be diverted into the starter, thus preventing the interference pulses from being applied to the vehicle ground and thus to the vehicle electric system. A fluid cooling arrangement at least partially surrounding the laser rod is disposed within the stream of gaseous coolant for heat removal therefrom. The brush is urged by the torsion spring, thereby bringing a brush-tip end into contact with the first inner side surface, and bringing the brush-rear end into contact with the second inner side surface.