Abstract: A firearm for mechanically and electronically firing a weapon including a trigger rotatably mounted to a sear and having an actuator attached thereto. A secondary sear is rotatably mounted to the sear, and a switch is mounted to the lower receiver behind the trigger and adapted to be contacted by the actuator when the trigger is pulled. An electronic circuit is electrically connected to the switch such that when the switch is contacted the circuit is energized to operate a prime mover that operates the firearm. The sear assembly may also comprise a main sear and an auxiliary sear controlled by a selector switch having cam surfaces and adapted to be rotated to a plurality of positions, wherein in a first position comprises a safety mode, a second position comprises a mechanical mode of fire and a third position comprises an electronic mode of fire.

Abstract: A system for tracking and correcting drift and dispersion of carrier frequencies in a transmitted signal which includes one or more carrier frequencies and a pilot frequency. The system includes one or more carrier tuners, each for receiving the transmitted signal and for deriving from the received signal and IF carrier signal representing a respective carrier frequency, a mixer for mixing the IF carrier signal and a local oscillator signal to produce a resultant IF information signal, and a demodulator for demodulating the resultant IF information signal to recover the transmitted information.

Abstract: A satellite locating system for use in a satellite communication system having a transmitting station in which radio signals with signal identification data is transmitted via a satellite to a receiving station.