46. You insist that all antennas must be oriented toward True north but some antennas like Brand X mention that there is no need to orient their antenna towards north.

We agree that the Brand X antennas are fairly symmetric but we still require the level and orient device. Basically the environment around the antenna will bias this calibration a bit and we want to ensure that over time other antennas which may or may not be symmetric, have the correct phase center applied, otherwise we can get a 1+ cm of distortion. In addition the orient and level device allows the antenna to always be returned to the same position in 3-D space on the antenna which is critical.