I can tellya that the high-power military radars in our fighters( not the weather radar that the heavies have) would fry a bird or human if turned on when the "target" was a few feet away. We also had interference problems with other systems at takeoff, so the 'dar didn't come on until we were rolling or actually WOW.
BTW, there's a new anit-personnel microwave system out there that will cause your skin to itch and maybe boil out at a thousand meters or so. One of the "non-lethal" systems we Yanks seem to be concerned with, heh heh.
Newer systems like the agile scanned phased array dars on the F-22 and F-35 don't have this problem. Yeah, the B-2 and later fighters.