How do you defeat a target that is using modulated noise jamming?
Considering the SA-75M Dvina (SA-2B/F) and the S-75M Volhov (SA-2E), the answer is simple against one plane using
Modulated Noise Jamming ...
... you simply need to aim at the middle band.
In case of two or three planes per formation, the picture could be extremely confused, with 2~3x6 vertical bands.