FWIW back to the original thread - the SA-2F had an optical mode
wherein the search radars remained silent until seconds from the
target. I know a B66 ECM operator who swears the SA2's radar came up
about 3 seconds before the missile went through the wing between the
fuselage and an engine. He landed in the Gulf and was picked up by the
Navy. He had an 86 1/2 mission patch as a result. Also BTW the SA2 was
a development of a German SAM system project. The search and track
scanning az-el radars are the same type mechanism.
Walt BJ