Abstract: A multi band antenna feed, for supporting multiple frequency bands, is coupled to a reflector and includes a cylindrical core waveguide and at least three coaxial cylinders, encircling said cylindrical core waveguide and forming at least three coaxial waveguides, bounded between pairs of consecutive coaxial cylinders. The cylindrical core waveguide and the at least three coaxial waveguides provide a pair of sum and difference radiation patterns, for each frequency band: a C-band, an S-band and an L-band.

Abstract: A handle for holding a tool piece comprising: a fore end region and an aft end region; an edge at the fore end region of the handle defining an opening for inserting a tool piece; and a clamp connected to the fore end region of the handle comprising a pair of selectively movable, substantially diametrically opposed arms. A handle for a broken key extractor, the handle capable of holding a selectively removable 0.050-inch broken key extractor blade such that a tensile force of at least about 50 pounds is required to remove the blade from the handle using a SCOTT J Model Tensile Tester.

Abstract: A handle for holding a tool piece comprising: a fore end region and an aft end region; an edge at the fore end region of the handle defining an opening for inserting a tool piece; and a clamp connected to the fore end region of the handle comprising a pair of selectively movable, substantially diametrically opposed arms. A handle for a broken key extractor, the handle capable of holding a selectively removable 0.050-inch broken key extractor blade such that a tensile force of at least about 50 pounds is required to remove the blade from the handle using a SCOTT J Model Tensile Tester.