One question; what exactly is UPR Half-Lead? Is this the original version that could half-lead it's self into the ground?
Half lead guidance of the Volhov. page 34.
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