[time-nuts] 60 KHz Receiver
Poul-Henning Kamp
phk at phk.freebsd.dk
Wed Oct 6 08:44:43 UTC 2010
In message <60AA6FCF-CF71-4E4C-A7CB-AAB9F11A23BF at rtty.us>, Bob Camp writes:
>The other answer is that DSP was not really available when the original
>waveforms were developed. A modern system would not have a "must be able to
>work with manual delay lines and an oscilloscope" requirement on it.
Well, more that LORAN-C was a navigation system primarily intended for
planes, so a high update rate was necessary.
Having established that, and high stability being a component,
Loran-C got (ab)used to also remotely steer clocks of low stability,
for instance in the Nasa Apollo program.
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
phk at FreeBSD.ORG | TCP/IP since RFC 956
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