The field of GRB970228 was also observed at wavelength other than X and optical. Radio follow-up observations were carried out at the Very Large Array (VLA, Socorro, New Mexico) at a frequency of 1.43 and 8.46 GHz starting less than one day after the GRB and continuing up to August 1997. No positive detection has been obtained for the X/optical source, at a level of tens of microJansky (1 Jy is the typical units of radio astronomy and corresponds to 10-26 watt m-2 Hz-1). Searches at the wavelength of 3.5 mm ([Smith et al. 1997]) gave null detections as well, at a level of few mJy.