[time-nuts] Thinking outside the box a super reference

paul swed paulswedb at gmail.com
Fri Nov 4 22:12:25 EDT 2016


Rick on the pll DRO I agree with you for today.
So is it built for 9180 and then the 12.63 is mixed with it? Or is it
actually a direct PLL precisely at the frequency so not even the
synthesizer is used?
Regards
Paul
WB8TSL

On Fri, Nov 4, 2016 at 9:40 PM, bownes <bownes at gmail.com> wrote:

> Not to mention there is not so sensitive film, sensitive film and really
> sensitive film.
>
> Good old orthographic film took minutes in bright light.
>
>
>
> > On Nov 4, 2016, at 20:24, Poul-Henning Kamp <phk at phk.freebsd.dk> wrote:
> >
> > --------
> > In message <c57q1c5engv94amimot7pu3l8romu6g2p0 at 4ax.com>, David writes:
> >
> >> Various online sources say that natural rubidium is radioactive enough
> >> to fog photographic film in 1 to 2 months but that is also the case
> >> with unprocessed uranium ore so I would not worry about it at all.
> >
> > Yes, that sounds about right for an isotope with a 40 billion years
> > half-life.
> >
> > 1 to 2 months is a LOOOONG time for photographic film.
> >
> > --
> > 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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