... Multifrequency study of radio sources with the Virual Obsevatory tools . ... We reliably identified 76 % of radio sources of the RCR catalogue. ... According to available photometric and spectral data for about a half of reliable identified sources we defined types of the host galaxies, and 45% of radiosources are quasars, 16 % are galaxies of late types, 22 % are galaxies of early types, 19 % are galaxies of early types with a high activity in radio range. ...