(sub)mm spectrum of the quasar 4C05.19. The black circle is the value obtained here in the third NIKA run, whereas other data are taken from Barvainis & Ivison (2002) and Kellermann & Pauliny-Toth (1973). Absolute photometric uncertainties have not been included. The spectral energy distribution fit includes a power-law synchrotron component (dotted line) and a contribution from dust emission (dashed line).