[1998-04-20] Chernobyl-2, also known as "FAR" (Phased Grid of Antennas) was the secret soviet army object, aimed to control the air of United States. In the whole USSR, there was only two of these built.
It's height is 150 meters and about a kilometer width. In a bright sunny day you can see this grid from anywhere in the forest of the Zone.
Now, the object is highly contaminated and of course, not used.