This all makes me wonder on the efficiency of the original idea. if you have 6 microwaves oriented in each of the directions of an XYZ plane, there would be the assumption that the coverage would be radiating out so there are no gaps in coverage. You could then rotate the rig, but that gets complicated for all 3-axis to rotate. But if you're rotating, then why not just one for each axis. Also, is the axis pointing at the ground even necessary to radiate?

So now we have to consider the wattage of a rotating system, and how fast does it need to rotate so the time not directly being radiated doesn't cause gaps in coverage. There's a lot of variable to cover here.