When I was in the Dominican Republic working the RS satellites, MIR and the Space Shuttle, I didn’t have an elevation rotator. I could only move the antenna in the azimuth plane. So I just aimed it about 45 degrees above the horizon, spun it around, and hoped for the best. I also had no computer control of the azimuth heading — I’d just watch the location of the satellite on my computer screen and operate the rotator control manually.
This device is a big improvement.

That is too cool!
OK, another project on my lengthening list of things to build! Need a 3D printer!