Lualualei VLF transmitter, Military radio transmitter in Honolulu County, United States.
The Lualualei VLF transmitter is a naval radio facility in Hawaii consisting of two tall guyed masts rising more than 450 meters into the air. The masts are linked by an overhead cable system designed to send signals to submarines across the Pacific Ocean.
The facility was built in 1972 and represented a major leap forward in military communication technology for American Pacific operations. It became part of a broader effort to improve contact with submarines operating at depth.
The transmitter represents the evolution of naval communication methods, enabling direct contact with submerged submarines through very low frequency radio signals.
The two masts are visible from several vantage points in the area and form an unusual landmark on the landscape. The site has limited public access since it remains an active military installation.
The transmitter uses extremely low frequencies that can penetrate through the ocean and reach submarines where ordinary radio waves cannot reach. This allows communication across vast distances that would be impossible with standard radio technology.
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