TITLE: GCN GRB OBSERVATION REPORT NUMBER: 697 SUBJECT: GRB000607, Radio Observations DATE: 00/06/10 06:31:13 GMT FROM: Edo Berger at Caltech D. A. Frail (NRAO), K. M. Becker (Oberlin), E. Berger, A. H. Diercks and J. S. Bloom (Caltech) report on behalf of the Caltech-NRAO-CARA GRB collaboration: "We have observed the error box of GRB000607 (GCN #693) with the VLA at 1.43 and 4.86 GHz on three occasions: May 8.59, May 8.79, and May 9.79. Within this error box there are three previously known radio sources, cataloged by the NRAO VLA Sky Survey (NVSS) in 1993 (see http://www.cv.nrao.edu/~jcondon/nvss.html). We see no evidence for significant flux variability for any of these sources over our observing time. No new radio sources were detected in the error box to typical levels of 0.5 mJy (4.5-sigma) at 1.43 GHz and 0.37 mJy (5-sigma) at 4.86 GHz." This message may be cited.