BPM is a time signal transmitter used in Pucheng, China at 35° 0'N 109° 31'E. The spectrum of frequencies reaches from 2.5, 5 over 10 and 15 MHz, which are being sent (UTC scheduled) 7h30m to 1 o’clock, continuously (for 5 and 10 MHz) and from 1h to 9h.
Technical Specifications: Signals emitted in advance on UTC by 20 ms. Second pulses of 10 ms duration with 1 kHz modulation. Minute pulses of 300 ms duration with 1 kHz modulation. UTC time signals are emitted from minute 0 to 10, 15 to 25, 30 to 40, 45 to 55. UT1 time signals are emitted from minute 25 to 29, 55 to 59.
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