  We undertook observations with the Green Bank Telescope, simultaneously with
the 300m telescope in Arecibo, as a follow-up of a possible flare of radio
emission from Ross 128. We report here the non-detections from the GBT
observations in C band (4-8 GHz), as well as non-detections in archival data at
L band (1.1-1.9 GHz). We suggest that a likely scenario is that the emission
comes from one or more satellites passing through the same region of the sky.
