NOAA Ocean Explorer: Electronic Position Indicator (EPI) antenna mast

Electronic Position Indicator (EPI) antenna mast used in Bering Sea operations, 1951. (NOAA Photo Library)

Related Links

History: Age of Electronics (1946-1970)

History: Timeline

NOAA Ocean Explorer Gallery: History

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http://oceanexplorer.noaa.gov/history/electronic/1946_1970/media/mast.html