This paper describes a signal processing and control system, designed and built for the Peruvian MST radar installed in the "Machu-Picchu" Scientific Station, Antarctica (62 º05'5 S, 58º28' W). System architecture, based in a single PC and two DSP boards, and design considerations are discussed. Toe system allows up to 4 receiver signals to be processed in parallel, with 60 range gates and 150 m maximum height resolution. System evaluation and sorne experimental results are reported.