BPL (time service)

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^[1] in Pucheng County, Shaanxi at 34°56′54″N 109°32′34″E,^[2] roughly 70 km northeast of Lintong,^[3] 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,^[4] using an 800 kW transmitter covering a radius up to 3,000 km.^[5]