The AN/FRD-10 is a United States Navy circularly disposed antenna array (CDAA), built at a number of locations during the Cold War for high frequency radio direction finding (HF/DF) and signals intelligence (SIGINT). 14 sites were originally constructed as a part of the "Classic Bullseye" program.
The AN/FRD-10 is a United States Navy circularly disposed antenna array (CDAA), built at a number of locations during the Cold War for high frequency radio direction finding (HF/DF) and signals intelligence (SIGINT). 14 sites were originally constructed as a part of the "Classic Bullseye" program.
Source: Wikipedia "AN/FRD-10" · CC BY-SA 4.0
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