We have another cool post by SignalsEverywhere YouTube channel and you could see the full video here
Satcom antennas used for L-Band reception from Inmarsat, Iridium and more with an RTL SDR Airspy and other Software-Defined Radios. A lot of these antennas are actually made for some commercial purpose like keeping ships connected to Inmarsat. In fact, the shipborne antenna has a nice motorized system for pointing the antenna that [SignalsEverywhere] is hoping to modify for his own purposes.
With what appears to be standard NEMA 17 steppers onboard, it should be relatively easy to supplant the original controller with an Arduino and CNC shield. Though considering the resale value these particular units seem to have on eBay, we might be inclined to just roll our own positioner.