短波授时台 >>

  BPM每天24小时以2。5,5,10,15MHz四种载频交替发播标准时间频率信号,覆盖全国,授时精度为毫秒量级。协调时UTC和世界时UT1 的标准时号用1KHz标准音频调制载频产生,秒信号长度分别为10ms(UTC)和100(UT1),整分信号均为300ms 。

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BPM broadcasts the standar time and frequency signals at 2.5 , 5 , 10 ,15 MHz alternatively 24 hours a day , which cover the whole country with the precision of 1 ms .Signals of UTC and UT1 are modulated by 1 KHz standard frequency.The lengths of the second signals are 10 ms (UTC) and 100 ms () , and the length of minute signal is 300 ms .BPM will disseminate the standard time code after a technical reconstruction. [BPM授时台]

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                                                                                                     [短波接收认证卡]——2004年1月1日启用

什么是无线电信号收信确认卡(QSL卡)?

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