I wrote a post on the clockwise/anti-clockwise question here but in essence i believe it relates to our requirements. Bigger plants like trees which extend above the antenna will respond well to one direction while smaller plants which sit beneath it will respond well the other. We are sending earth energy upward or cosmic energy downward. Though with this said i have seen good (and bad!) results with both so i no longer think it is as simple as this. Season, type of plant & exact position on the land all seem to play a role, so you could just ignore my comment altogether and simply play around, making sure to observe your results carefully.
There is an antenna in my double infinity potato bed (copper wire going clockwise from top to bottom) and the potatoes around the antenna are around double the size as those which are further away, despite receiving same light and same water.
You can just about see in this image. Bamboo antenna on the right.
Can also see a bunch of random stuff popping up at the base of the antenna. Tomato, rocket, lettuce and it blows my mind how these same things are not popping up further away from the antenna, despite receiving same water, same light etc. They simply have more cosmic energy there. So that's cool!
We also found a new plant near one antenna which we've never seen in our garden before, like an orange coloured poppy. Could be unrelated but i've read about this happening with pyramids. They can unlock old varieties which are thought to be extinct. So when the conditions are correct the rules of our playground change and that which appears like magic can happen...