  We report on results of BeppoSAX Target Of Opportunity (TOO) observations of
the source MXB 1730-335, also called the Rapid Burster (RB), made during its
outburst of February-March 1998. We monitored the evolution of the spectral
properties of the RB from the outburst decay to quiescence. During the first
TOO, the X-ray light curve of the RB showed many Type II bursts and its
broadband (1-100 keV) spectrum was acceptably fit with a two blackbody plus
power law model. Moreover, to our knowledge, this is the first time that this
source is detected beyond 30 keV.
