BPM (time service)
BPM is the call sign of the official short-wave time signal service of the People's Republic of China, operated by the Chinese Academy of Sciences, broadcasting from CAS's National Time Service Center in Pucheng County, Shaanxi at 34°56′55.96″N 109°32′34.93″E / 34.9488778°N 109.5430361°E, roughly 70 km northeast of Lintong, along with NTSC's long-wave time signal BPL on 100 kHz.
BPM is broadcast at 2.5, 5.0, 10.0, and 15.0 MHz, the same frequencies as WWV and WWVH, following the schedule listed below:
| MHz | UTC | CST | 
|---|---|---|
| 2.5 | 7:30-1:00 | 15:30-9:00 | 
| 5 | 0:00-24:00 | 0:00-24:00 | 
| 10 | 0:00-24:00 | 0:00-24:00 | 
| 15 | 1:00-9:00 | 9:00-17:00 |