[time-nuts] Next Aug 21 eclipse and time flow
Poul-Henning Kamp
phk at phk.freebsd.dk
Mon May 29 08:21:45 EDT 2017
--------
In message <CAJ_qRvYfe2egbZVBzahyct5o7z3FUFkApEPE=uYM01Gfc+QHDA at mail.gmail.com>
, Tim Shoppa writes:
>Now that I have a 10MHz GPS OCXO (well, I've had that for about 15 years
>too, getting that was the reason I stopped dinking with the WWV audio
>refclock) I wonder if there's some simple hardware I could build that would
>let me do superior carrier-phase type measurements on WWV propagation. If I
>could see the night-day shift more clearly then I might see an ionospheric
>effect during the upcoming August 21 eclipse, which nicely traces a path
>from west to east not too far off the line between Ft Collins and my
>location.
The Kiwi-SDR is one option.
Slightly more hardcore is to attach a 1Ms/s ADC to your antenna and
a computer and clock it from your house-standard.
See:
http://phk.freebsd.dk/loran-c/
Specifically:
http://phk.freebsd.dk/loran-c/CW/
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
phk at FreeBSD.ORG | TCP/IP since RFC 956
FreeBSD committer | BSD since 4.3-tahoe
Never attribute to malice what can adequately be explained by incompetence.
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