TITLE: GCN GRB OBSERVATION REPORT NUMBER: 2014 SUBJECT: GRB 030329: Radio Observations DATE: 03/03/30 03:35:26 GMT FROM: Edo Berger at Caltech E. Berger, A. M. Soderberg (Caltech) and D. A. Frail (NRAO) report on behalf of a larger collaboration: "We observed the position of the optical afterglow (GCN 1985) of GRB 030329 (GCN 1997) with the VLA on March 30.06 UT. We detect a 3.5 mJy source at 8.46 GHz coincident with the OT. This is the brightest radio afterglow detected to date, consistent with the unusual brightness of the optical (e.g. GCNs 1986 & 1987) and X-ray (GCN 1996) counterparts, as well as the prompt emission (GCN 1997)" This message may be cited.