I remember you've wrote (in previous topic maybe), about that how mush is the lead in "UPR" and "K" modes in S-75. Could you wrote it again?
Max 4 degrees from the bore-sight.
Hpasp Free SAM Simulator, "Realistic to the Switch" (U-2 over Sverdlovsk, B-52's over Hanoi, F-4 Phantoms over the Sinai, F-16's and the F-117A Stealth bomber over the Balkans.) http://sites.google.com/site/samsimulator1972/home