AMPLITUDE /FILE

          [CALIBRATE\]AMPLITUDE F1  [...  Fn]   [/ANTENNA  N1  [...  Nn]]  /FILE
    UvINn[UvOut]

      Apply  the specified amplitude factor(s) for all or the indicated antennas
    to rescale the visibilities and weights. Visibilities are read in  UV  table
    indicated  by  UvIN  and written in UvOut, or updated in UvIn if no UvOut is
    specified.