  The shape of the electron energy spectrum in 3H beta-decay permits a direct
assay of the absolute scale of the neutrino mass; a highly accurate theoretical
description of the electron energy spectrum is necessary to the empirical task.
We update Sirlin's calculation of the outer radiative correction to nuclear
beta-decay to take into account the non-zero energy resolution of the electron
detector. In previous 3H beta-decay studies the outer radiative corrections
were neglected all together; only Coulomb corrections to the spectrum were
included. This neglect artificially pushes m_nu^2 < 0 in a potentially
significant way. We present a computation of the theoretical spectrum
appropriate to the extraction of the neutrino mass in the sub-eV regime.
