[en] Observations of galaxy clusters from the Abell catalogue with distance classes D <= 3 have been made at 102.5 MHz using the Large Phased Array of the Lebedev Physical Institute. These observations were used to determine the radio luminosities and spectral indices of clusters Radio luminosity function of clusters of galaxies has been derived for the luminosity interval of 10²⁵ < Lsub(r) < 10²⁷ W/Hz. The comparison of radioproperties with optical and X-ray data confirms the correlation of parameters of radio emission (such as radio luminosity and spectral index) with richness, morphology and X-ray luminosity of clusters. The statistical properties found are explained by the effect of hot intracluster gas on the evolution of flare radio galaxies in clusters

[en] Rich clusters of galaxies from the Abell catalog with distance class D< or =3 have been observed at 102.5 MHz with the Pushchino phased antenna array of the Lebedev Physics Institute. The data obtained are used to estimate the radio luminosities and spectral indices of the clusters. The 102.5-MHz luminosity function of clusters of galaxies is derived for the range 10²⁵< L/sub r/<10²⁷ W/Hz. Comparison with optical and x-ray data indicates correlations of the radio parameters (luminosity, spectral index) with the richness, morphological type, and x-ray luminosity of the clusters. The statistical relations that are found can be explained qualitatively by the influence of the hot intracluster gas on the evolution of active member radio galaxies

[en] Results of the RATAN-600 observations of the radio source 3C 84 with the resolution 1' x 38' at the wavelength 7.6 cm are presented. The radio halo with the half width of 5'.4 and flux density of 1.15+-0.1 Jy is detected on the one-dimensional brightness distribution. An upper limit for the spherically symmetric component of the polarized radiation is estimated to be 6-8 mK