JJY

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JJY is the call sign of a low frequency time signal radio station located in Japan.

The station broadcasts from two sites, one on Mount Otakadoya, near Fukushima, and the other on Mount Hagane, located on Kyushu Island. JJY is operated by the National Institute of Information and Communications Technology (NICT), an independent administrative institution affiliated with the Ministry of Internal Affairs and Communications of the Japanese government.

The Mount Otakadoya site (37°22′21″N 140°50′56″E / 37.37250°N 140.84889°E / 37.37250; 140.84889) is located at an elevation of 790 meters (2,590 ft). It broadcasts a 50 kW signal (13 kW ERP) on 40 kHz from an umbrella top-loading antenna situated 250 meters (820 ft) above the ground. As of March 2011^[update] it has been powered down and evacuated due to the Fukushima I nuclear accidents. As of April 21 it is broadcasting again but is unattended by staff. It went off air again temporarily on April 25 due to lightning, but has ever since been on air.

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