This view of the Princeton, Iowa, tower is from the northwest as seen from the access road. The Tampico, Illinois, antennas are located on the left side. I assume the horn antenna on the left and parabolic antenna on the right (which are mounted about 1/3 the distance from the top) are providing space-diversity reception when multipath reception during the sultry, still, summer nights effectively cancels the signal to the primary antennas.
Photo and caption courtesy of Jim Hebbeln