NSGA Winter Harbor AN/FRD-10 HF/DF Array | military, antenna, abandoned / shut down

 military, antenna, abandoned / shut down

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There were sixteen AN/FRD-10 high-frequency direction-finding arrays built by the United States and Canada during the 1960s and 1970s. These sixteen stations, along with a number of Pusher HF/DF arrays, comprised the US Naval Security Group's BULLSEYE HFDF net. Pushers was simply the name given to simpler CDAAs.

The arrays operated in the range of 2 to 32 MHz. Their function was to detect, monitor, and plot the location of Soviet submarines and other radio emitters in the Atlantic and Pacific oceans. The largest array was some 260 m in diameter, 36 m high, and sat on a ground plane of 390 m diameter, with a two storey building at its centre, housing the main equipment and operators.

The Winter Harbor array ceased operations in 1998 and was dismantled in 2001.

www.navycthistory.com/winterharbor_intro_main.html
www.secretscotland.org.uk/index.php/Secrets/RAFEdzell
luxexumbra.blogspot.com/2005/06/frd-10-endangered-speci...