Complex sentence: Over the next few years, 48 FPS-3's were installed to replace the earlier systems in the Lashup Radar Network, and was also produced as the AN/MPS-7, a mobile version.
Split into simpler sentences: Over the next few years, 48 FPS-3s were installed to replace older systems in the Lashup Radar Network. The FPS-3 and was also produced as the AN/MPS-7, a mobile version.