If you are mounting it to a metal pole, care must be taken that the pole does not extend past (above) the aluminum angle. If it does then it will become part of the antenna. I’m also not sure how the antenna would interact with other nearby metallic objects (fence, tower, other ...
RF Toolbox is an antenna design and electronics/electrical tool package. It takes you step by step through the design of the following types of antennas: Dipole Fat Dipole Yagi J-Pole Super J-Pole Log Periodic Cubic Quad Vertical helical It...