  The narrow emission line luminosities of radio-loud AGN are well-correlated
with their low-frequency radio luminosities. This correlation is linear and
extends over at least four orders of magnitude. The correlation is discussed in
terms of a linear relationship between the power in the radio-emitting jets and
the photoionizing (i.e. accretion) luminosity. Support for this theory comes
from a direct correlation between the optical continuum and radio luminosities
of steep-spectrum quasars. We discuss the dependence of the observed
luminosities of AGN on their black hole masses and how close to the Eddington
limit they are accreting.
