We report results from multiwavelength observations of the microquasar GRS
1915+105 performed during the 2000 April campaign. This is one of the bigge
st campaigns ever made for this source covering the broad band from radio t
o gamma -rays. Multiwavelength light curves compiled from all the data redu
ced up to date and broad band spectra obtained with ASCA and RXTE are prese
nted.