I have a problem with the F-15C's radar. I've tried reading the manual but I still can't figure out why this is happening.
I created a mission in which I'm flying against two SU-27's. As soon as I'm in radar range, I switch to TWS, bug both of them and launch two AIM-120's against them. The first SU-27 always gets smoked, but the second one manages to evade the missile and go off my radar by diving low to the ground. Here's where the problem starts: as soon as he gets back up high in the sky, my radar won't be able to see him even if he's high enough off the ground and even if I'm at the same altitude, within radar range and directly on his six. One time I noticed that he would only appear at the bottom of my VSD if I pitched my nose up, but this isn't always the case. Any clues as to what's going on here?