I have a question on S-200. Why the RPC have a NRZ (IFF) antenna but there's no indicators (besides the plotting board) that the target is actually a friendly or a foe?! I mean, if there is an IFF antena, the radar operators should know if they're tracking a friendly or a foe, isn't it?!The primary mode of target acqusition is using the IADS (where we know our target).
Anything else is only backup solution.
In Hungary, we not bought the IFF for the RPC at all.
(Now, both are in a museum at Kecel)