Radio spectra of the 19 FR 0s with a 1.4 GHz flux density > 50 mJy, covered by both the TGSS and GB6. Flux densities are normalized to unity at 1.4 GHz. The empty red symbols correspond to upper limits. The dashed lines are the log-parabolae defined by the measurements at 150 MHz, 1.4 and 5 GHz which are shown for the sources with a convex spectrum. The smaller symbols are the available WENSS measurements at 327 MHz.