•The radiotelescope RATAN-600 already more than two tens years is used  for solar investigations. In the last several years ago the radiotelescope RATAN-600 (Fig.1) is used for regular solar study in monitoring mode (Korolkov&Parijskij,1979; Parijskij, 1993, Bogod &Gel'freikh, 1998, .Bogod et al., 1999). The solar observations is breaking only one month in a year. The radio instrument covers the range of 5,5 octave  from 0.5 GHz to 18 GHz and it is unique in practice. On the Table 1, the to-day and future parameters of the RATAN-600 for solar observations are presented.  The most effective regime is a mode of usage 1/4 parts (Southern sector) of Main circular mirror together with a Flat periscope mirror, consisting on 124 flat reflecting elements (8,5 m per 3 m) (see Fig.2). This antenna system forms the diagram pattern in the form of a vertical knife. Inside Southern sector there are circular rail-way tracts for moving of "Receive Mirror" (third mirror together with a receive cabin) in multi azimuth regime and tracking. The radiation from the Sun struck to the Flat mirror and is reflected as a plane wave to a Main circular mirror of Southern sector. The range of azimuth angles is about $\pm 30 degree$, that it is enough for realization of azimuth observations in a time interval $\pm 3 hours$ from a central meridian. Mean time of the culmination is about 9-00 UT. The receive horns are in focus of "Receive Mirror". The"Receive Mirror" and room for the receivers are located on a uniform platform, which can move in any azimuth with high accuracy.  For solar study the Panoramic Analyzer of Spectrum (PAS) is used (Bogod et al., 1999).