TITLE: GCN GRB OBSERVATION REPORT NUMBER: 2161 SUBJECT: GRB 030329 3.5 and 6 cm radio observations at RTF-32 telescope DATE: 03/04/22 15:28:53 GMT FROM: Yuri Gnedin at Pulkovo Obs,Saint-Petersburg A.M.Finkelstein (IPA RAN), A.V.Ipatov(IPA RAN) and Yu.N.Gnedin (Pulkovo Observatory) report: GRB 030329 was observed at 3.5 cm with the RTF-32 telescope of the Institute of Applied Astronomy in Svetloe on 2003 Apr 11 and 12 and at 6 cm with the RTF-32 telescope of the Institute of Applied Astronomy in Zelenchuk on 2003 Apr 11,12 and 13. The observations in Svetloe have been made in both polarization modes. The 3.5 cm following flux densities: 2003 Apr 11.18.12 27.1 +/- 7.8 mJy in the right circular polarization . 7.8 +/- 4.2 mJy in the left circular polarization . 2003 Apr 11.16.47 30.4 +/- 9.7 mJy in the right circular polarization. 18.7 +/- 4.7 mJy in the left circular polarization. 2003 Apr 12.18.43 18.1 +/- 5.2 mJy in the right circular polarization . 7.8 +/- 2.8 mJy in the left circular polarization. Over the period of 6-cm observations in Zelenchuk the flux density at April 11 decreased from 179.6 +/- 4.4 mJy at 18.46 UT to 8.3 +/- 3.1 mJy at 22.48 UT. During Apr 12 and 13 the mean flux density was at the level of approximately 10 mJy. This message may be cited.