JJY
JJY is the call sign of two Japanese long-wave transmitters for broadcasting the time signals of the UTC world time .
JJY40 sends time signals on the long wave frequency of 40 kHz from 790 m high mountain Ōtakadoya ( 大鷹 鳥 谷 山 , -yama ; 37 ° 22 ′ 21 ″ N , 140 ° 50 ′ 56 ″ E ) on the border between Tamura and Kawauchi in Fukushima prefecture .
JJY60 transmits on 60 kHz from the 900 m high Hagane Mountain ( 羽 金山 , -yama ; 33 ° 27 ′ 56 ″ N , 130 ° 10 ′ 32 ″ E ) on Kyushu Island on the border between Saga , Saga Prefecture and Itoshima , Fukuoka .
JJY40 is approximately 16 km from the Fukushima Daiichi nuclear power plant . On March 12, 2011, 19:46 JST (UTC + 9) , the transmitter was switched off due to the Fukushima nuclear disaster and was put back into operation on April 21, 2011.
Individual evidence
- ↑ JJY transmitted log. April 21, 2011, archived from the original on April 24, 2011 ; Retrieved April 4, 2013 (Japanese).
Web links
- Japan Standard Time Group (English)