MSOCS
I would think that the detection capabilities are quite good, because BAE Nashua (once Sanders) knows that stuff.
What is not clear is what there is in active jamming beyond that provided by the radar. Back when stealth was new, it was generally held that active jamming was no use on a stealth aircraft and could indeed be undesirable - what if the EW decided to jam a radar that hadn't even detected the aircraft yet? YOOHOO here I am! And you know I'm a stealth aircraft because your active can't see me...
One of the questions is whether that has changed, and how.