The second Indian remote sensing satellite Bhaskara-II has three microwave radiometers operating at 19.35, 22.235 and 3l.4GHz. Brightness temperature (TB) data have been acquired by these radiometers during the period from December 1981 to July 1983 comprising 325 passes. The ground resolution of these radiometers is about 125 km circular diameter. These data have the highest potentially for the use in sea. land- and snow/ice-based studies. A considerable amount of work has been carried out by the Indian scientists using these data and a lot more will follow. In view of this, an attempt is made in this paper to summarize some of the useful observations regarding the reliability and nature of the data. These observations can be useful guidelines in the interpretation of TBdata.