| 摘要 |
PROBLEM TO BE SOLVED: To eliminate necessity of a re-adjustment of a tilt only by mechanically mounting a base portion 7b of an antenna to a tilting keeper 53 when detaching the antenna for repair and mounting it again in the state of utilizing a reception in an antenna system in which the antenna is mounted on a construction by using a supporting device 50, precise adjustment work is easy when adjusting the tilt, and the adjusted state is strictly maintained on the state of completing the adjustment. SOLUTION: The antenna device is provided with an antenna 7 and the supporting device 50 for freely removably supporting its base part 7b, the supporting device 50 is composed of a fixed keeper 52 equipped with a mounting tool 51 onto the construction and the tilt keeper 53 for freely adjusting the tilt with gradient scales for adjusting an elevation angle with respect to the other side of the fixture holder 52, and a non-fixed holder side of the tilting keeper 53 is equipped with a keeping member 53b for freely removably mounting the antenna base portion 7b. COPYRIGHT: (C)2004,JPO
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