GCN Circular 9081
Poonam Chandra (RMC) and Dale A. Frail (NRAO) report on behalf of the Caltech-NRAO-Carnegie GRB Collaboration: "We used the Very Large Array to observe the field of view toward GRB 090401B (GCN 9066) at a frequency of 8.46 GHz on 2009 Apr. 02.15 UT. The GRB radio afterglow is undetected at the Swift-UVOT position (GCN 9067). The three-sigma flux density of the GRB afterglow at the Swift UVOT position is 138 uJy. The National Radio Astronomy Observatory is a facility of the National Science Foundation operated under cooperative agreement by Associated Universities, Inc."