An analysis is presented of an experimental study of the scattering of microwaves by the density fluctuations due to electron plasma‐wave instability in a beam‐plasma system. Reasonably good agreement with the general predictions of the Shapiro and the Drummond and Pines nonlinear theories of plasma oscillations is obtained. In particular, at the “quasilinear” steady state, the experimentally measured values of the scattering cross sections, the angular spread of the scattered radiations, the functional dependence of the scattering cross sections on the wavenumber of the most unstable plasma wave mode, and the increase in the thermal energy of the plasma electrons were all in reasonably good agreement with the corresponding theoretically expected values. In a few cases, a rather weak satellite line corresponding to scattering at the “bounce frequency” was seen. In these cases, the satellite line appeared only on the low‐frequency side of the main plasma line.