The multichannel theory of receiving antennas is currently the most effective approach to analyzing the receiving and scattering properties of receiving antennas. According to this theory, the scattering field of the receiving antenna is considered as the sum of the information component of the scattering field and the residual component. These components form interaction channels through which power is taken from the plane wave by the receiving antenna. All the numerous results on the development of this theory that we obtained earlier related to the cases of ideally conducting receiving antennas. In such antennas, the only absorber of energy taken by the antenna from a plane wave is the antenna load. This work is devoted to the study of the influence of thermal losses in the receiving antenna on the connection of the and components of the receiving antenna with the wave incident on it. In this work, a two-channel model of a receiving antenna is constructed, which makes it possible to take into account the influence of thermal losses in the antenna walls on the energy of the process of interaction of the scattering field components of the receiving antenna with an incident plane wave. Based on this model, it is shown that the presence of thermal losses leads both to a change in the amplitude of the information component of the scattering field of the receiving antenna itself, which causes a change in the extinction power taken from a plane wave via the information channel, and to a change in the number of power consumers transmitted via the interaction information channel. A simple analytical expression has been obtained that allows, based on the known efficiency of the antenna, to carry out a numerical assessment of the influence of losses in the antenna on the power transmitted from a plane wave through the interaction information channel.