To facilitate setting elevation angles at intervals of a prescribed angle with high accuracy, and reduce the number of components as much as possible.

A base fitting 1 attached to a pole brace 7 like a telephone pole and an adjustment portion fitting 2 which is attached to the base fitting 2 and has an antenna 3 fixed thereto are disposed in two upper and lower parts as an upper fitting U and a lower fitting D. When used as the lower fitting D, the adjustment portion fitting 2 includes an angle setting bolt hole array for lower fitting wherein a plurality of angle setting bolt holes are arrayed in positions shifted by a prescribed angle on a circle having an angle setting bolt hole of the upper fitting U as the center and having an attachment interval as the radius; and when used as the upper fitting U, the adjustment portion fitting 2 includes an angle setting bolt hole array for upper fitting wherein a plurality of angle setting bolt holes are arrayed in positions shifted by a prescribed angle on a circle having an angle setting bolt hole of the lower fitting D as the center and having the attachment interval as the radius approximately.