Results of the MOJAVE modelfit jet kinematics. Left: Stacked image of naturally weighted CLEAN maps of 1928+738 at the U-band from the MOJAVE program. The averaged circular beam with a size of 0.63 mas is shown in the top-left corner. Jet components are labeled individually. Right: Distance from the core as a function of time (data points) for the MOJAVE knots detected at 15 GHz with linear fits (straight lines) overlaid.