WWVH

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WWVH is the callsign of the U.S. National Institute of Standards and Technology's shortwave radio time signal station located at the Barking Sands Missile Range, in Kekaha, on the island of Kauai in the state of Hawaii. 21°59′16″N 159°45′47″W / 21.98778°N 159.76306°W / 21.98778; -159.76306

WWVH is the Pacific sister station to WWV, and has a similar broadcast format. Like WWV, WWVH's main function is the dissemination of the official U.S. Government time and frequency standard.

Due to ionospheric conditions, at certain times and locations some listeners may receive both WWV and WWVH on the same frequency at the same time. The information modulated on the carrier is modified to reduce confusion if both are received simultaneously. In particular, voice announcements on one correspond to silent periods on the other. WWVH uses a female voice (Jane Barbe) to distinguish itself from WWV, which uses a male voice.

WWVH time signals can also be accessed by telephone at +1 (808) 335-4363.