MICROWAVE OUTBURSTS ON NOVEMBER 10, 1988

The microwave event on Nov.10, 1988 have been analysed preliminarily. The variation of spectral index α with time appeared that α>0 and α<0 befor and after the maximum of the burst at 11. lcin wavelength respectively, and minus maximum near the peak of burst at 3.2cm wavelength. Such a characters of the variation of spectral indexes indicate that the microwave burst was due to gyro-synchrotron radiation of energetic electrons acceleraled during the flare.