Left panel: radio (NVSS) vs. [O III] line luminosity of the FR0CAT (blue), FRICAT (black), and sFRICAT (red) sources. The FRICAT sources with z< 0.05 are represented as black dots with a red asterisk superposed. The green line shows the correlation between these two quantities derived from the FR Is of the 3C sample from (Buttiglione et al. 2010), individually marked with the green crosses. Right panel: radio luminosity vs. BH mass (M_⊙).