Obviously SNR is on, but search and tracking radars are using a dummy load. The Guidance radar is providing active course/LOS information to the missile beacon.
There is a major disadvantage of "OSA"'s KARAT, compared to the other systems - KARAT is too close to the launching containers, so the smoke could be a problem sometimes... The manual recommends to lock the target on AS, before launch in case smoke makes KARAT useless....