It is proved that when the primary incident field in a lossy medium is fixed, the power drawn by the antenna is finite. It is not necessary to limit the direction of the receiving antenna, unlike the case of a lossless medium when this is required to get a finite maximum.

The formulas for deriving the maximum received power and the optimal distribution the field on a specific surrounding area, which should be created by the antenna in the transmission mode for it to receive maximum power in the receiving mode, are given. The obtained results are illustrated using a linear wire antenna.