suggested some likely generation mechanisms for subsecond impulses of microwave emission during flares and investigated the spatial structures of coronal holes associated with their atmospheric heating characteristics [4]. The research efforts are carried out in collaboration with observatories of Japan, China, Europe and the USA using data obtained at ground-based and orbital observatories in all ranges of solar emission.
     However, two factors: the obsolescence of the SSRT systems and the need to switch over to advanced diagnostics of events in the Sun’s atmosphere which call for substantial improvement of the speed for obtaining radio images, a simultaneous recording of the processes occurring under different physical conditions, or a three-dimensional picture of their development - led us in 1997 to the decision to create - on the basis of modernizing the SSRT - a new-generation instrument, the multiwave radioheliograph (MVRH) [5-7]. That decision is in full accord with the tendency established in the 1990s in radioheliography (introduction of a second frequency at NRH, development of OVRO, the proposal on the development and construction in the USA of FASR at ~0.3-30 GHz  and LOFAR at 15-150 MHz , the decimetric array in Brazil at 1.2-1.7, 2.7 and 5.0 GHz,  and Chinese Space Solar telescope (SST), the radioheliograph at 1-30 MHz  with high speed and resolution). The implementation of these projects involves overcoming very challenging technical problems and requires considerable funds. With their creations, scientists will have instruments at their disposal, which would meet - for many years ahead - all conceivable needs of solar physics and solar-terrestrial connections. They will revolutionize the space weather prediction problem.