The real test for the S-500 isn't raw radar range but networking: whether its radar nodes can pass a target track quickly and precisely enough to follow a fast stealth jet from one radar's field of view to the next. If they can, the system could watch much of Eastern Europe's airspace and blunt the air superiority that NATO's hundreds of F-35s give it over Russia's small Su-57 fleet. Russian state outlet RIA Novosti says the S-500 can also detec…