As the manual of SAMSIM states, its simulates the operation of the "S-125M1 Neva (SA-3B Goa)" system, "Realistic to the Switch".
No Pechora please...
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