An experimental investigation has been made of a transducer‐reflector combination consisting of a 90° conical reflector with a line transducer placed along the axis. Both far field and near‐field data indicate that, except at low frequencies, when a uniform line is used, the radiation patterns are equivalent to those from a uniform circular aperture. Evidently other effects compensate for the geometrical shading. By a suitable choice of line‐element connection, however, a shaded aperture distribution can be obtained. The horn reflector increases the sensitivity of the transducer but not to the extent predicted from the geometry. The interaction of elements composing the line transducer is increased by the addition of the conical reflector.