[time-nuts] Allan Deviation question

Azelio Boriani azelio.boriani at screen.it
Fri Jul 6 16:09:24 UTC 2012


OK, I'll take a look at my cheap audio cards searching for the oscillator.

On Fri, Jul 6, 2012 at 5:59 PM, Bill Dailey <docdailey at gmail.com> wrote:

>
> Removed the oscillator and send it the required freq (24.576MHz) that is
> disciplined to 10MHz.  Put an sma connector next to the card in the little
> cover on the pci slot.  Currently using my ds345 but am getting a Valon
> Synthesizer board with a divider.  Tried ve1alq but the dividers aren't
> right and can't seem to fix that.  Have a vcxo but no way to discipline it.
>  Just going to break down and go the Valon route.  Will also use it for
> 125MHz for my qs1r.
>
> Have done this setup with 2 sound cards.  One is a SB xfi surround USB and
> the other is fata1ity extreme gamer.  Works like a charm for both.  20uHz
> plus minus through my radio (with 10MHz signal)  Should be much better with
> audio but can test because my ds345 is tied up.  I would bet I will have
> substantially sub-uHz precision is the audio only domain.
>
> Doc
> KX0O
>
>
> Sent from my iPhone
>
> On Jul 6, 2012, at 9:43 AM, Stewart Bryant <stewart at g3ysx.org.uk> wrote:
>
> > ... and running it to a sound card (oscillator gps disciplined)
> >
> > How did you achieve this?
> >
> > Thanks
> >
> > Stewart
> >
>
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