Thanks for this picture, it nicely shows how it works.
Also problem that we has the latest version of Dvina simulated, not the one that was used in Vietnam. During every 5 years, new technical bulletins introduced new features.
As our is the last version, it already modified to counter the system weaknesses observed in Vietnam.
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
