YOu might have read a thread started by me and replied by the others tellign you that!
The Red Crown calls out bogies at 50nm away ALWAYS! This is "an limitation" of the game. No matter the bogies are at 60 70 or 100nm, Red Crown always call out bogies at 50 miles.
If you want engress without ground threat, you should fly very low.
My experience could have been wrong, but I played Typhoon before. Normally your bomb flight will be at 500 feet hugging the ground. As you engress you raise to 1500ft assuming your dropping dumb bombs. For LGB you must be at 4500 to 7000 ft.
However you have brought up a good topics for research.
If I were you I would use Wrench Empty DEserrt to test out the "LINK" of EWR
By the way the game theatre is 1,000,000 meters times 1,000,000 meters which is 500nm X 500nm. So you use 2 Barlock will be sufficient for any "Early Warning".