| 摘要 |
An antenna having dipole signal receiving elements pivotally mounted on an antenna body supported upon a parallelogram linkage connected to a rotatable base member. The dipole elements are capable of pivoting between open and closed positions, and the parallelogram linkage includes operating means for raising the antenna body from a retracted position to an elevated position, and the linkage is connected to the dipoles such that the dipoles are automatically positioned to the open signal receiving position upon the antenna body being elevated, and are pivoted to a closed position in general alignment with the antenna body in the retracted position.
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