TITLE: GCN CIRCULAR NUMBER: 14505 SUBJECT: GRB 130427A: CrAO RT-22 36 GHz observation DATE: 13/04/29 20:35:17 GMT FROM: Alexei Pozanenko at IKI, Moscow A. Volvach (CrAO), L. Volvach (CrAO), A. Pozanenko (IKI) on behalf of larger collaboration report: We observed the field of GRB 130427A (Maselli et al., GCN 14448) on Apr. 28 between (UT) 16:22-18:41 with 22-m radio telescope RT-22 of Crimean Astrophysical Observatory at mean frequency of 36 GHz. At the position of the optical (Elenin et al., GCN 14450; Perley et al., GCN 14451) and radio afterglow (Zauderer et al., GCN 14480; Zauderer et al., GCN 14482; Perley, GCN 14494) we detected a source with a flux 1.9 ± 0.4 mJy at T_mid = 1.405 days after burst trigger.