[time-nuts] DCF77 Generation

paul swed paulswedb at gmail.com
Fri Sep 7 19:57:19 UTC 2012


Tom
Just saw your post
Though I have visited your site many times over the years never ran into
these.
Looking forward to downloading and trying the exes out tonight.
I am working on the wwvb d-psk-r and this will be handy for the am in the
modulator instead of fixed streams.
Thanks

On Fri, Sep 7, 2012 at 2:40 PM, Attila Kinali <attila at kinali.ch> wrote:

> On Fri, 7 Sep 2012 22:53:50 +1000
> Tom Harris <celephicus at gmail.com> wrote:
>
> > I have just written some code for generating DCF77 pulses given a 100ms
> > clock interrupt and an accurate timestamp  from a RTC, for a mate who has
> > to get some imported clock movements synced up (we are in Australia which
> > has no radio time service). I did a quick search and found very little
> out
> > there from people generating their own DCF77 data, so I thought I'd ask
> if
> > anyone else has ever done anything similar (and why as well). We are not
> > transmitting, only faking the output from a DCF77 receiver.
>
> Elrad (an old, discontinued german electronics magazine) had once an
> article on a DCF77 signal generator IIRC complete with 77.5kHz radio
> signal, somewhen in the second half of the 90s. If anyone is interested,
> i can try to track the article down in my archives.
>
>                         Attila Kinali
>
> --
> There is no secret ingredient
>          -- Po, Kung Fu Panda
>
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