Radio core flux density at 1.4 GHz measured from the VLBI data (Chi et al., in prep.) vs. the excess radio emission (i.e., S_{1.4  GHz,  tot} − S_{1.4  GHz,  SFG}) for our radio-excess sources. Our radio fluxes agree with the VLBI measurements within a factor ≈2; our fluxes are typically higher because they might include some extended radio emission from outflows, or “aborted jets” (e.g. Ghisellini et al. 2004).