Properties of CSS radio sources from 102 MHz interplanetary scintillation observations

Interplanetary scintillation observations of 56 compact steep-spectrum radi o sources have been carried out at 102 MHz on the Large Phased Array, Russi a. Observations have shown that 42 sources have low-frequency cut-offs in t heir spectra. The physical conditions in the cores of the quasars and radio galaxies studied are estimated.