The "AEA Loop"

This seems to work well at some distances and not as well at others, leading me to conclude that it has different radiation angles than the other vericals. I am still trying to figure out how to optimize this antenna.

The bottom of the ring is 13 inches off the ground and there are no RF absorbing materials close by. It dips fine and makes contacts but just doesn't seem to be as strong as other antennas I have.