Uh, how did they test it? Does China have a stealth airplane with which to test the radar? ;-)
My BS meter just pegged! LOL
Hey!
You have to think like Hillary.
They merely said they “had a radar that could detect stealth aircraft” ... They never said they tested it.
Since the stealth F-117 had a radar signature of a bumble bee or some other small insect, I would say they used bumble bees or insects...
I think that the B-2 Bomber radar signature is still classified