When the Soviets decided to develop a new combat helicopter – what has become the Mi-28 – a new missile system was developed for it. The new missile was generally similar to Shturm-V. At the same time, the helicopter's Raduga-28 fire-control system was similar to Raduga-Sh, but it had an combined optical and low-light-level-TV device in place of a purely optical device for observation and tracking. This was mounted below the helicopter's nose, while the antenna for the radio-command transmitter was mounted directly in the nose. The optical system had 3x magnification in search mode and 13x magnification in track/engagement mode. The TV system had up to 20x magnification and could be used day and night. The observation/tracking device, instead of being fixed (as on the Mi-24), can rotate +/-110 degrees in azimuth and +13/-40 degrees in elevation. It can work day and night, and the picture quality on the TV channel was much better than on the Mi-24.