Longitudinal profile of the jet of PKS 22101+044 as observed in radio band by VLA at 22.46 GHz (middle panel) and by MAD at VLT in Ks band (bottom panel). The top panel shows the box (dashed line) in which the signal is integrated. The solid line represents the jet direction. The units of the y-axis are counts pixels^-1 adequately scaled permitting an acceptable comparison between the frequencies analysed. The zero point corresponds to the core position. Knots a, b and A are labeled.