Trumpeter 1/35 Trumpeter P40/1S12 Long Track S-Band Acquisition Radar SystemDescription The 1S12 (also referred to by the NATO reporting name "Long Track" in the west) is a 3 D UHF radardeveloped and operated by the former Soviet Union. The P 40 started development in 1960 and by 1962 the radar had completed state trials and in 1963 was accepted into service by the anti aircraft troops of the Soviet armed forces. In 1965 the P 40 gained the GRAU designation 1S12 as it was adopted as the target acquisition radar of the 2K11