Abstract The most important characteristics and multi-frequency behaviour of the active RS CVn binaries are reviewed. New long-term photometric and spectroscopic observations of several short-period active RS CVn binaries are presented. The results for RT And, XY UMa and preliminary analysis of SV Cam and ER Vul are given. New prospects for research in the field are outlined.

Keywords techniques: photometric -- stars: variables: RS CVn binaries -- stars: individual: RT And, SV Cam, CG Cyg, XY UMa, ER Vul

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