  We discuss the fluxes of high energy neutrinos and gamma-rays expected from
AGNs if hadrons can be effectively accelerated to ultra-high energies by their
relativistic jets, as currently believed. Fluxes of multi-TeV neutrinos
detectable by $km$-scale detectors like IceCube could be expected from powerful
blazars where strong accretion-disk radiation is present in the AGN cores.
Gamma-ray fluxes of hadronic origin can be important for flares in the compact
jets of these sources up to GeV energies, but they will be insignificant for BL
Lac objects. Production of UHE neutral beams composed of neutrons and
gamma-rays can drive straight collimated jets in the intergalactic medium on
multi-kpc scales, which could be resolved by the Chandra X-ray observatory.
While we do not expect any significant neutrino flux from these large-scale
jets, we predict gamma-rays of synchrotron origin in the energy range from
sub-GeV up to TeV energies, which would be detectable by GLAST and ground-based
gamma-ray telescopes.
