| 摘要 |
A system is provided for multistation remote position indication for remotely controlling and indicating the position of a motor driven positioning system, particularly an antenna rotor, at multiple locations utilizing a single pair of control wires to interconnect all remote control units. The system includes the generation of a symmetrical alternating polarity low frequency pulse train which is amplitude modulated by the position of the antenna, display of the antenna position by means of a polarity selective peak detecting voltmeter, and control of the antenna position by means of polarity selective current means through a synchronous detector and antenna drive motor control means.
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