  An important radiation field for photomeson neutrino production in blazars is
shown to be the radiation field external to the jet. Assuming that protons are
accelerated with the same power as electrons and injected with a -2 number
spectrum, we predict that km^2 neutrino telescopes will detect about
1-to-several neutrinos per year from flat spectrum radio quasars (FSRQs) such
as 3C 279. The escaping high-energy neutron and photon beams transport inner
jet energy far from the black-hole engine, and could power synchrotron X-ray
jets and FR II hot spots and lobes.
