line,nchan,start,width,stepThe default is all channels (or all wide channels if there are no spectral channels). The output will consist of only spectral or wideband data (but not both).
line,start,widthThe default is no reference line.
'nocal' Do not apply the gains file. By default, UVPNT applies the gains file in copying the data. 'nopass' Do not apply bandpass corrections. By default, UVPNT corrects for the bandpass shape if the required information is available. 'nopol' Do not apply polarization corrections. By default UVPNT corrects for polarization corss-talk.