[en] This is a short note on the content of the reflected signal in reflectometry experiments for plasma diagnostics applications. In the presence of fluctuations the reflected signal consists of (i) a phase shift, (ii) a backscattering term not contained in Wentzel-Kramers-Brillouin approximations, and (iii) a forward scattering term due to transversely propagating density fluctuations. While information on the first of these terms follows from the phase of the reflected signal, information on backscattering can be derived from the electric field at the antenna, which consists of the attenuated backscattered field plus the attenuated reflected transmitter field. The phase fluctuation at the receiver due to backscatter depends crucially on the ratio of the amplitudes of these fields in a manner quantified here. 3 refs