Top: cosmic ray spectrum at the Earth for a source located at 1 Gpc emitting a cosmic ray luminosity of 10⁴⁷ ergs^-1 between 10¹⁷ eV and E_max = Z × 10^20.5 eV assuming a pure proton (blue solid line) and a pure iron composition (red dashed line) compared with the Pierre Auger Observatory spectrum. Bottom: cosmogenic neutrinos (dashed lines) and photons (solid lines) for the pure proton (blue) and the pure iron (red) cases corresponding to the same cosmic ray source.