Polarized emission of source J1330+4703b and the corresponding best fit (solid line) to the uniform external Faraday screen model. We show the fractional Q (filled squares) and U (filled circles) vs. λ² in the top left plot. The top right plot shows the Q/I-U/I track. The bottom left plot shows the fractional polarization vs. λ² trend. The bottom right plot shows how polarization angles vary across L band.