A receiving diversity apparatus and method for a mobile station in an HDR mobile communication system measures CI values of pilot channels on respective antennas, measures a CI value of in-phase combined pilot channel, and then selectively performs one of a selection diversity receiving operation and an in-phase combining receiving operation according to the measured CI values. A method for use of the swab tipped applicator provides for delivery the pharmacological agent to an area of the skin, such as the external auditory canal, preferably after showering or bathing, so that the dry agent is dampened so as to treat conditions of the skin. The high-density sound absorption layer is bonded to the air-impermeable resonance layer via the adhesive layer and has a density in a range of 0.