Dynamics of the domain wall (DW) separating the homogeneously precessi
ng domain (HPD) and a stationary domain in thin channel has been studi
ed. Measurements were performed at 0.65 T-c (29 bar) and 0.7 T-c (11 b
ar). Transformation of the spectroscopic DW to non-spectroscopic one w
as observed, The results analysed in terms of the theory developed for
the non-spectroscopic behaviour of the DW.