VLA/EVLA Performance at P-Band

The plots show the sensitivity of a given antenna expressed as effective system temperature (Tsys / ε) vs. time.
The data are of IF A (IF 1, RHC pol.) observed at 327.5 MHz using 3.125 MHz bandwidth.
Red points in the plots correspond to data taken after an antenna was retrofit to EVLA standards.
Black points in the plots correspond to data taken before an antenna was retrofit to EVLA standards.