Yeah, but how precise it is? Even the old WW2-style radars can see all stealth planes, but can't really guide a missile towards them. There was also Czechoslova

Yeah, but how precise it is? Even the old WW2-style radars can see all stealth planes, but can't really guide a missile towards them. There was also Czechoslovak Tamara radar in the '80s that was supposed to detect them as well. And Russians are supposed to have a mesh of mobile radars that can detect small anomalies in their plane and combining them together should show some imprecise location of a target. The question is how useful any of these are?