The radio engineering means of the RI “Mykolaiv Astronomical Observatory” are fully passive. To track satellites, they use radio signals emitted by the satellites themselves. Thus, the following means were developed and put into operation: 1) Simple INTerferometer NETwork (SintNet) for monitoring the orbital position of geostationary (GEO) satellites; 2) Doppler station for clarifying the orbital elements of low Earth orbit (LEO) satellites. Two SintNets operate now: European and Chinese. The European SintNet consists of 10 stations and tracks three co-located satellites simultaneously. The Chinese SintNet consists of four stations and tracks one satellite. The positional error (standard deviation) of satellites is about 200 m