אז חזרתי שוב על המדריך
The constantly alternating of HI - MED PRF is required to detect targets flying at different aspects to you. The "HI" High PRF frequency mode permits detection of head-on targets at great distance. "MED" Medium PRF has less range but is better at detecting targets will less closure (Vc). This is termed interleaved mode and is the standard LRS mode for the F-15C in game. You can cycle between HI, MED, and interleaved by pressing [RShift + I].
אני חושב שהבנתי ,אבל אפשר בבקשה לקבל הסבר על 3 המצבים--בעברית פשוטה.