| 摘要 |
PURPOSE:To control the azimuth of an antenna with a horizontal turn of a supporter, by having a circular arc form for the through hole of a fixing tool which connects the supporter to which an antenna is attached and a basement which is attached to a fixed material. CONSTITUTION:An antenna is attached to an attachment bar 21 of a substrate 17 through through-holes 22 by means of volts. A hook cylinder 11 which is put over the upper end of a supporter 1 is fixed with volts 13. A pedestal 10 is welded to the cylinder 11. The substrate 17 is joined to a basement 9 by a fixing tool 16 and clamping parts 19 formed with screw holes of the substrate 17. In this case, a control hole 15 formed to the pedestal 10 of the basement 9 has a circular arc shape centering on the center part P of the pedestal 10. The azimuth of the antenna is controlled roughly at first by turning the cylinder 11 after unfastening the volts 13 and then finely by unfastening slightly each tool 16 and then turning it within a range of length of the hole 15. |
