Миг-31

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http://aerospace.boopidoo.com/philez...20Avionics.htm
N005 / Sapfir-25 / RP-25MN / S-500

Sapfir-25 was developed by a team under Kirpichev as a very high priority task after the defection of Viktor Belenko to Japan in 1976 compromised the MiG-25's radar. For speed of development, an existing radar had to be selected, and the MiG-23ML's radar, with its lookdown capability, was the obvious choice. Changes included the use of a larger antenna.

Detection range in lookup mode against a Tu-16 was 105-115km head-on. Tracking range against the same target was about 75-80km. Lookdown mode reduced these ranges to 27-30km and 22-25km respectively.

Detection range against a MiG-21 in lookup mode was 70km head-on, while tracking range was about 50-60km.

Weight was 337kg. Used AVM-25 analog computer.

Compared to Smerch-A it could engage faster targets at higher altitudes, featured greater search and tracking range, provided lookdown/shootdown capability and close combat modes. It had 30° (±15deg) and 60° (±30 deg) azimuth search patterns, ±14° in elevation.. It also had better anti-jamming protection. Azimuth scanning limits were slightly reduced to ±56° , elevation to +52/-42° , by the twist-cassegrain antenna design.

А теперь от скуки можешь подсчитать мощность - сравнив с БРЛС, мощность которой известна. Например, с N001 / Myech / RPLK-27 (по той же ссылке), у которой средняя мощность передатчика 1 киловатт:
N001 has a 1.075m antenna diameter twist-cassegrain antenna. A pulse-doppler design operating in the 3-cm band utilising medium and high PRFs for optimum lookdown capability, the N001 has a search range of 80-100km against a 3 sq m RCS target in a headon engagement, 140km against a large bomber. It can track a 3 sq m target at 65km. In a pursuit engagement, search range for a 3 sq m target falls to just 40km.