It has 70° of azimuth on the side, 10° more than the SU-27SM, so when doing a NOCH the F-4 is closer and easier to the 90 than the SU-27.
The SU-27SM radar has a horrible TWS that can easily make the missile lose its course.
What this means is that in case of an AIM-120 vs R-27ER confrontation, unless the SU-27SM does a “Silent Launch”, the F-4 can know at all times that it has been shot and from where, unless it is 20 or 15km away, it can perfectly wait for the AIM-120 to activate and then evade without problem.
Even more so because both have THE SAME AMOUNT OF COUNTERMEASURES.
The Su-27 would win by a landslide in dogfight, but it still loses at long and MEDIUM DISTANCE, since even the F-4 has a 19KM ACM almost double that of the Su-27, so even when approaching it will be more dangerous for the Su-27, still taking into account that the Aim-9l/i have better resistance to flares at long distances than the R-73, not to mention the R-27ET that deviate only because the target aircraft fired a missile or a rocket.
in F-15C TWS can do the same, so horrible radar?
you can utilize flanker flight perfomance, climb and have better launch stats and speed, so, your missile will be way faster than amraam(btw, in same conditions it still will be faster)
but all of su-27 CMs are large, also matter
use IRST lock and transer it to radar track
any other missile also, why 27ET must be exception?
IRST lock transfer no longer works, at least, not when I tried it last week.