Abstract: A novel method is provided for reticulating adhesive-backed, perforated substrates. The method entails tacking a continuous sheet of viscous reticulating adhesive to one side of the substrate and then contacting the other side with heated air. The temperature of the air is regulated such that the adhesive softens and bubbles over the perforations but final cure is not initiated. The air is directed at a velocity such that the bubbles burst and the adhesive is redeposited onto the adhesive-side of the substrate.

Abstract: A monopole antenna or the like including a sleeve antenna and a stub antenna having means for decoupling the antenna from surrounding electrically conductive elements. Such elements may consist, for example, of the conductive skin of an aircraft and, typically, of other antennas mounted on this skin, or they may comprise conductive portions of a ship. In order to provide the decoupling, a radial transmission line is disposed at the base of the antenna and concentric with the coaxial transmission line used to excite the antenna. The radial transmission line includes an upper and a lower electrically conductive plate, each having a small central opening and means for electrically interconnecting the plates about the opening. The antenna may be fed by a coaxial transmission line extending through the conductive element and the central opening. The inner conductor of the coaxial transmission line may extend beyond the radial transmission line to form a monopole antenna.