Abstract: A satellite dish antenna for receiving a broadcast signal from a satellite includes a low noise block which receives the signal reflected from the dish and provides a human-perceptible guidance signal, such as a sequence of beep tones, to aid an individual in properly orienting the satellite dish with respect to the satellite. A time interval between the beep tones is varied in dependence on the strength of the broadcast signal received at the low noise block. A circuit for providing the guidance signal is activated by a non-contact switch, such as a magnetic lead switch. A magnet is movably mounted on the surface of the low noise block for selectively activating and deactivating the guidance signal circuit.

Abstract: An electric switch for use in a braking fluid pressure fault alarm device for a vehicular dual brake system, which device includes a body having a cylinder, a piston slidably inserted in the cylinder and receiving front and rear wheel braking fluid pressures for sliding movement from its inoperative position to its operative position in response to leakage of either of the braking fluid pressures, and an electric alarm circuit for generating an alarm signal when deenergized. The electric switch is engaged with the piston and is switched from its conductive condition to its non-conductive condition in response to sliding movement of the piston in order to deenergize the electric alarm circuit.

Abstract: Apparatus for providing an indication to a vehicle operator of failure of either of separated fluid braking circuits by means of an electric circuit, which electric circuit is further enabled to provide such indication in response to self-deactuation of the electric circuit.