An antenna system is disclosed that includes a base section to which a signal connector may be attached, and a radiating section distal from said base section. An electromotor drives the fan via a motor shaft with means for motor self-ventilation by generating a cooling air stream flowing through the motor by means of a cooling wheel driven by the rotor. Through the method, NiS-free toughened glass plates of high quality can be produced. The lightsensitive material contains at least one spectrally sensitized silver halide emulsion and a compound capable of absorbing light within the spectrally sensitizing region of the spectrally sensitized silver halide emulsion, and capable of reducing the sensitivity of the spectrally sensitized silver halide emulsion by at least 0. A third switch connects the second node of the holding capacitor to a second reference voltage. The external surface of the skirt includes a conical portion having an axial extension that is greater than one-eighth of the depth of the recess but smaller than the depth of the recess.