OPPA99 RTP SLOT The name comes from the resulting antenna looking like a segment that has been cut from a wheel of cheese. Cheese antennas produce a beam of microwaves that is narrow in the antenna's curved dimension, and wide in the flat dimension. The antenna consists of a cylindrical parabolic reflector consisting of sheet metal with a parabolic curve in one dimension and flat in the other, with metal plates covering the open sides, and a feed antenna, almost always some sort of feed horn, in front, pointing back toward the reflector. These are not widespread, as most height finders used a modified "orange peel" design to focus in azimuth as well, in order to be able to pick out a single aircraft.|Winds across the Line of Flight