AN/FPS-90

Martin Marietta produced this high-powered version of the AN/FPS-6 height-finder radar. See the AN/FPS-6 entry.

The AN/FPS-90 antenna and tower at MacDill AFB, FL

Source: http://clui.org/sites/default/files/ludb/tx/7798/5663573486_b539d730a3_o.jpg linked from http://clui.org/ludb/site/big-hill-strategic-petroleum-reserve