METHOD FOR INSTALLING ANTENNA

PROBLEM TO BE SOLVED: To provide a method for installing an antenna by which a new transmitting antenna is additionally installed to a steel tower even at a place such as a mountain area which a crane truck can not enter. SOLUTION: At the time of a preliminary work in the daytime, a temporary mount 21 is installed at the crowning of the iron tower 11, the existing antenna installation pole is fixed and after that, supporting point supporting hardware at the top and the bottom of the existing antenna installation pole 12 is removed. Next, a new antenna installation pole 26 is pulled up by lever blocks 27a, 27b installed at the upper part of the temporary mount 21. In this case, a lower part of the existing antenna installation pole 12 is inserted into the upper inside of the new antenna installation pole 26, pulled up to a predetermined position and fixed to the iron tower 11. In a work at the night in which transmission is stopped, supporting of the new antenna installation pole 26 is loosened, the new antenna installation pole 26 is pulled up with the existing antenna installation pole 12, after performing bank raising of an existing transmitting antenna 14 by predetermined height, the temporary mount 21 is removed. Next, an establishment transmitting antenna 50 is pulled up to the crowning of the iron tower 11 and installed at the upper part of the establishment antenna installation pole 26. COPYRIGHT: (C)2006,JPO&NCIPI