The steady motion of a large conducting body in a magnetized plasma has been shown to create a spatial structure of charges and currents in the plasma which propagate without attenuation along the magnetic field direction (the label ''Alfv¿n wings'' has been given to this structure because of its resemblance to the wings of a biplane). In order to show this, it has previously been assumed that the conducting body must be large enough so that frequencies excited in the plasma are significantly below the ion cyclotron frequency &OHgr;i. In this paper, this restriction is relaxed in order to examine the wave pattern emitted at frequencies &ohgr; in the entire band, &ohgr;<&OHgr;i. It has been found that the Alfv¿n wing structure breaks up into individual Fourier components which propagate away from the source at an angle slightly greater with respect to the magnetic field than the alignement of the original structure. This process depends on wave frequency. A given frequency is lost from the Alfv¿n wing structure at a distance which varies as 1/&ohgr;3. The amplitude of these traveling waves decreases at a rate which is inversely proportional to the square root of the distance from the source. ¿American Geophysical Union 1990