Most of the challenges are mechanical, not electrical - the antennas that they drive can be huge, have significant wind loading and rotational inertial, and just downright weigh a lot. It’s hard to imagine that an electric motor for rotating an antenna would be anything special, but in fact, antenna rotators are non-trivial engineering designs. The popularity of robotics, 3D printing, and CNC machines has resulted in a deluge of affordable electric motors and drivers. Let’s take a look at a typical ham satellite tracking setup and see how it all ties together. What’s left over are all the extremely important real-world details. When I first started tracking amateur satellites, computing the satellite’s location in the sky was a part of the challenge. If you want to listen to satellites, you have to be able to track them as they pass over the sky.
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