Abstract: In accordance with the present invention an antenna assembly is provided whereby a satellite dish antenna and a terrestrial antenna, for receiving satellite transmissions and local broadcast television signals, respectively, are mounted in the same location. A single base mounting bracket is used to mount the antenna assembly on a wall or other structure. The satellite antenna is secure to the base mounting bracket by a satellite antenna mast. An antenna interface bracket is also secured to the base mounting bracket. A terrestrial antenna mast, upon which a terrestrial antenna is mounted, is secured to the antenna interface bracket. The antenna interface bracket includes a central portion in the shape of an elongated parallelogram. At each end of the central portion of the antenna interface bracket are mounting ends which are attached at angles with respect to opposite faces of the central portion of the antenna interface bracket.

Abstract: The invention is directed to an electrostatically supported ball type gyroscope pickoff system for determining the attitude (i.e., angular orientation) of the ball spin axis relative to the gyroscope case for any arbitrary attitude. The gyroscope case is provided with a set of electrostatic electrodes arrayed in three-dimensional space. A levitating electric field is maintained between the ball and the electrodes. The ball is so constructed as to be unbalanced about its spin axis. Under such conditions, as the ball spins, it orbits, and its surface alternately advances towards and recedes from any given electrode at the spin frequency, producing a field modulation signal. The phase pattern of the modulation signals at the several electrodes is a unique function of the attitude of the spin axis relative to the electrodes. Means are provided for processing the modulation signals so as to determine the attitude of the ball.