English: The Magnetic Drum Radar Equipment, called MADRE, began operation in 1961 on the shores of NRL's Chesapeake Bay Detachment. MADRE, a high-power, high antenna-gain over-the-horizon (OTH) radar, was able to detect and track aircraft as they raveled cross the Atlantic Ocean. (Photo: U.S. Naval Research Laboratory, Savell) [Ref. 82326(34)]
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MADRE over-the-horizon radar at the NRL's Chesapeake Bay Detachment
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The Magnetic Drum Radar Equipment, called MADRE, began operation in 1961 on the shores of NRL's Chesapeake Bay Detachment. MADRE, a high-power, high antenna-gain over-the-horizon (OTH) radar, was able to detect and track aircraft as they raveled cross the Atlantic Ocean. (Photo: U.S. Naval Research Laboratory, Savell) [Ref. 82326(34)]