Naval Computer & Telecommunications Area Master Station, Eastern Pacific, Radio Transmitter Facility Lualualei, Helix House No. 2, Base of Radio Antenna Structure No. 427, Makaha, Honolulu County, HI

Significance: Helix House No. 2 (Structure 87) is an octagonal, cast-in-place concrete building constructed in 1945-46. It is nearly identical to the first Helix House (Structure 3) built at RTF-Lualualei in 1935. The copper-lined Helix House, named for the coiled wires in the equipment housed within, amplifies and tunes the frequency of the radio signal for optimal output. At the time of construction, these structures comprised an impressive and state-of-the-art radio facility, which was the only one of its kind in the Pacific region. The complex represents the Navy's pioneering efforts in initiating new developments in radio-electronics and their leadership in the utilization of radio-electronics in military operations. ...
Survey number: HABS HI-310-B