VLA radio maps of J1437+30. Same as Fig. A.1. Contour levels start at 350 μJy beam⁻¹ (B-configuration) and 2 mJy beam⁻¹ (A-configuration) and increase with factor . As shown in Appendix B, source A is a Narrow-Angle-Tail (NAT), while source B is probably Wide-Angle-Tail galaxy (WAT). The A-configuration data were imaged using Super-uniform weighting to reveal the marginally resolved radio core in J1437+30.