Moderately resolved sources – single-channel images: these figures show the 6 single-channel images generated from simulated EVLA data between 1 and 4 GHz in the EVLA D-configuration. The sky brightness consists of two point sources, each of flux 1.0 Jy at a reference frequency of 2.5 GHz and separated by 18 arcsec. Their spectral indices are  +1.0 (top source) and  −1.0 (bottom source). The angular resolution at 1 GHz is 60 arcsec, and at 4 GHz is 15 arcsec and the circles in the lower left corner of each image shows the resolution element decreasing in size as frequency increases.