[time-nuts] Cesium Clock Avialable

Pete Lancashire pete at petelancashire.com
Sat May 19 11:38:52 EDT 2018


Dana,

I would suggest downloading and reading the HP journals that discussed the
first clocks there's a lot of information in there about how they operate
Etc.

On Sat, May 19, 2018, 8:23 AM Dana Whitlow <k8yumdoober at gmail.com> wrote:

> Don't Cesium clocks have a beam current integrator of sorts so that it's
> possible
> to pretty accurately assess the remaining life of the tube?  If not, I'm
> terribly
> surprised and disappointed.
>
> Also, beginning with a new tube, roughly how long can one be run until it
> reaches exhaustion?  Are we speaking months, years, decades, or what?
>
> Dana
>
>
> On Sat, May 19, 2018 at 10:01 AM, Bob kb8tq <kb8tq at n1k.org> wrote:
>
> > Hi
> >
> > Unfortunately there really is no way to tell how much Cs is left in the
> > tube. You can
> > look at beam current and make a guess. All that really will tell you is
> > that the fuel
> > gauge is on empty or at least just off of empty.
> >
> > Bob
> >
> > > On May 19, 2018, at 2:30 AM, Paul Bicknell <paul at bicknells.f2s.com>
> > wrote:
> > >
> > > Hi Doug
> > >
> > > Is it possible to test its operation and
> > > can the time left on the cesium be calculated   Regards Paul
> > >
> > > -----Original Message-----
> > > From: time-nuts [mailto:time-nuts-bounces at febo.com] On Behalf Of Doug
> > Millar
> > > via time-nuts
> > > Sent: 19 May 2018 05:04
> > > To: time-nuts at febo.com
> > > Subject: [time-nuts] Cesium Clock Avialable
> > >
> > > Hi, I am willing to part with my HP 5061A cesium standard and manual.
> The
> > > unit was rebuilt and functioning some years ago and not used since
> then.
> > > There is usable cesium in the tube and the unit worked. I have not
> > tested it
> > > recently. It has a Patek-Philippe analogue clock in the front. The unit
> > is
> > > in great physical condition.  Asking $600 plus shipping from Long
> Beach,
> > CA.
> > > 90806
> > > I also have an ESI 242D resistance calibrator and a Julie primary
> > resistance
> > > standard in an oven. Let me know if you are interested. Very
> reasonable.
> > >      Thanks, Doug K6JEY
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