[time-nuts] WWVB Disciplined Oscillator
Hal Murray
hmurray at megapathdsl.net
Sun Apr 7 21:02:32 UTC 2019
tshoppa at gmail.com said:
> As a frequency standard I have no major disagreement with the PTTI article.
> But the 100 microsecond number they give for absolute time transfer seems to
> be based entirely on propagation characteristics and ignores the difficulty
> I've always had in resolving the mushy edge of the timecode pulses. 100
> microseconds implies a system bandwidth of 10kHz, which is pointless because
> the transmitter antenna bandwidth has to be quite narrow - hundreds of Hz if
> not less.
Does NIST publish the transmitter bandwidth? I've never seen it, but I haven't done a serious search.
Maybe somebody near enough to get a clean signal could measure it. What does a spectrogram look like?
--
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