 mount using a pole in a socket or bolted flange mount, it should have only one way in which to interface with the tower top plate or socket. "Any antenna designed to comply with this specification will incorpor- ate one or more lifting lugs designed to be an inherent part of the structure through a welding or casting process. Drawings, pictures, illustrations, and design details showing clearly how the antenna is to be attached to lifting cable and tag lines will be provided and subjected to design analysis by third-party erection services providers and struc- tural experts who are qualified to render opinions on safety aspects under all conditions including shipping, handling, installation, oper- ation, or removal. Under no conceivable conditions will this requirement be waived. "Any antenna made up of panels, feed lines, and mounting bracket sub- assemblies (i.e. not a single mechanical assembly) will follow the same process as outlined in 2 above, except that these conditions will apply at the sub-assembly level, such as a panel and its feed lines and radiators- a power divider/splitter assembly or sub-component as assembled, tested, and shipped from the factory under pressure with gas barriers in place. "Upon completion of the assembly of an antenna will be fitted with a gas barrier, including pressure indicator and drain cock, and pressurized at its input connection to a level twice the recommended field pressure value. The pressure shall be maintained continously until disassembled in the field for connection to the tower top elbow complex after mounting on the tower. If pressure drops, the leak shall be investigated and fixed prior to further test or installation work. PRACTICAL IP AND TELECOM FOR BROADCAST ENGINEERING AND OPERATIONS "Upon completion of assembly and any other tests deemed appropriate and necessary by the manufacturer, the manufacturer shall carry out pattern tests to demonstrate that the finished antenna meets or exceeds the vertical and horizontal patterns invoked in the RFQ. The manufac