Apply amplitude F1 to antenna N1 (resp. Fi to antenna Ni] to rescale the visibilities and weights.
[CALIBRATE\]AMPLITUDE F /ANTENNA N1 ... Nn [/FILE UvIN [UvOut]]
Apply amplitude F to all antennas N1 to Nn. Note that if N1 to Nn include all antennas, the flux is actually scaled by F2̂, so that the command is equivalent to AMPLITUDE sqrt(F)