TITLE: GCN CIRCULAR NUMBER: 6539 SUBJECT: VLA upper limit on GRB 070610 DATE: 07/06/15 17:03:01 GMT FROM: Poonam Chandra at U Virginia/NRAO Dale A. Frail (NRAO) and Poonam Chandra (NRAO/UVA) report on behalf of the Caltech-NRAO-Carnegie GRB Collaboration: "We used the Very Large Array to observe the field of view toward GRB 070610 (GCN 6489) at a frequency of 8.46 GHz on 2007 June 15 at 13.67 UT for 1 hour. The GRB is undetected and the peak radio flux at the optical afterglow position obtained from 1.5m OSN telescope (GCN 6501) is 80 uJy ± 100 uJy. The National Radio Astronomy Observatory is a facility of the National Science Foundation operated under cooperative agreement by Associated Universities, Inc."