>>5969416same reason HAM ops detect dead zones from the supposed ionosphere reflectivity. The "horizon line" is the farthest a frequency can be seen before it is consumed by the chaos of background noise. I suggest all anons research "over the horizon radar." Chernobyl and the woodpecker were one such install. This thread has already been slid to /bant/ from /pol/. /pol/ is a hotbed right now, and they are worried. This cannot be known, but is there if you look. I will not post again.