BPL (time service)

{{Short description|Time signal radio station in China}}

BPL is the call sign of the official long-wave time signal service of the People's Republic of China, operated by the Chinese Academy of Sciences, broadcasting on 100 kHz from CAS's National Time Service Center{{Citation |url=http://english.ntsc.cas.cn |title=National Time Service Center}} in Pucheng County, Shaanxi at {{Coord|34|56|54|N|109|32|34|E|type:landmark_region:CN-61|display=it}},{{Citation |url=ftp://ftp2.bipm.org/pub/tai/scale/TIMESIGNALS/timesignals.pdf |title=Time Signals |publisher=BIPM |page=78 |archive-url=https://web.archive.org/web/20211010023818/ftp://ftp2.bipm.org/pub/tai/scale/TIMESIGNALS/timesignals.pdf |archive-date=2021-10-10 |url-status=dead |access-date=2011-04-20}} roughly 70 km northeast of Lintong,{{cite web|url=http://english.ntsc.cas.cn/rs/fs/200909/t20090917_39104.html|title=Facilities - National Time Service Center (NTSC), Chinese Academy of Sciences}} along with NTSC's short-wave time signal BPM on 2.5, 5.0, 10.0, and 15.0 MHz.

BPL broadcasts LORAN-C compatible format signal from 5:30 to 13:30 UTC,{{cite web|title=长波授时 (Longwave time signal)|url=http://www.time.ac.cn/serve/BPL.htm|work=National Time Service Center, Chinese Academy of Sciences|access-date=16 March 2013|archive-url=https://web.archive.org/web/20130110210025/http://www.time.ac.cn/serve/BPL.htm|archive-date=10 January 2013|url-status=dead}} using an 800 kW transmitter covering a radius up to 3,000 km.{{cite web|title=科研成果 (Research achievements)|url=http://www.ntsc.cas.cn/kycg/|work=National Time Service Center, Chinese Academy of Sciences|access-date=16 March 2013}}