Dependence on initial magnetic field value of the distance where the radio photons escape. The figures depict the two different profiles of the magnetic field strength depending on radius. Also, the peak of γ-ray – at the base of the jet– and the peak of radio luminosity – at the distance where the source becomes optically thin, z_ssa(95 GHz) = z_{95 GHz} – are represented. The electron power have two different values: (a) erg s⁻¹, (b) erg s⁻¹. The other parameters have the values: cm, , u_exp = 0.1 c, γ_min = 1, γ_max = 10⁶, p = 2, δ = 10 and z₀ = 0.001 pc. The profile of the electron power follows the magnetic field one.