Left: distribution of the NVSS fluxes of the 219 FRICAT sources; the red histogram is for the 14 sFRICAT sources. The vertical blue dotted line indicates the 5 mJy limits of the BH12 sample. Right: the black curve shows the r-band magnitude distribution of the FRICAT hosts (the red histogram is for the sFRICAT sources); the vertical dotted lines indicate the limits defining the SDSS main galaxies sample. The blue histogram report the SDSS completeness in percentage from Montero-Dorta & Prada (2009).