  The search for compact components of strong ($S_{int} \ge 5$ Jy at 102.5 MHz)
discrete radio sources from the Pushchino catalogue was carried out using the
method of interplanetary scintillation. A total of 3620 sources were examined,
and 812 of them were found to compact (scintillating) components. Estimates of
fluctuations of the flux density of these compact components were derived from
the scintillation index ($m_{max}$) corresponding to an elongation of $25^o$.
The angular size and compactness of 178 sources with compact components were
estimated. Scintillation indices of sources corresponding to the compact
component ($m_{max}$) and flux densities of compact components were determined.
It was demonstrated that slow variations of the spatial distribution of
interplanetary plasma, which are related to the 11-year cycle of solar
activity, may exert a systematic influence on the estimates of angular sizes of
sources. Coefficients compensating the deviation from the spherical symmetry of
solar wind in the estimates of angular sizes were found using the coefficient
of asymmetry of the statistical distribution of intensity fluctuations. The
study of correlations between the parameters of sources in the sample revealed
that the maximum value of the scintillation index decreases as the integrated
flux increases, while the angular size has no marked dependence on the
integrated flux.
