UV-to-radio SEDs of the host galaxies for all four radio-detected sources in our survey. The solid curve shows our multiwavelength SED model of each galaxy fit using the UV-optical-NIR data. In two cases this model accurately predicts the radio flux, indicating that the starburst is optically thin. For the remaining sources the UV-inferred star formation alone underpredicts the radio flux, and a heavily obscured nuclear starburst (dashed line) is also needed to explain the optical and radio measurements simultaneously.