The tunguska is a good combination anti-air, you just have to be prudent with the cannon as you can run out pretty quick and reload time is horrendous. The 9M311 is okay but it depends on target aspect. The Tor has the reach and a satisfying launch animation.
The radar appears in the top left hand corner on screen. Use default key "I" to toggle the radar on and off. When ON (shown by the yellow arrow to the bottom left of the radar screen), the air targets show up as always on green pips if pinged, plus there is a radar screen sweep. Very enjoyable to use.
(Been practicing on some F-18C' in mission editor.)