Radio spectrum of the unresolved source TXS 0004+364, including data from this paper (triangles) and other surveys (squares). The straight line is a power‐law fit, with spectral index ﹩\alpha =2.0﹩ from 4.86 GHz to 151 MHz. The errors on the fluxes from this paper lie within the plot symbols. The other surveys are 6C (Hales, Baldwin, & Warner 1993), Miyun (Zhang et al. 1997), WENSS (Rengelink et al. 1997), and Bologna (Colla et al. 1973).