[time-nuts] Spectracom 8170 time clocks simple suggestion

[paul swed]

Bob no idea actually. But I do have the MSA 8160 rcvr on the bench and
simply can add the ne602. Also John Lowe from NIST actually
suggested/alluded to it over a year ago before he ducked out of time-nuts.
Its one of those fairly obvious answers. Definately not high on my priority
list.
Its as simple as I can imagine and doesn't use a FPGA or a uProc.

As a discussion point on "simple" folks that work armchairs always have
something to say. But they rarely contribute to actual results. Far to easy
to debate simple.

I know that you do help and I appreciate that.
Regards
Paul.



On Sat, Jun 15, 2013 at 10:35 AM, Bob Camp <lists at rtty.us> wrote:

> Hi
>
> I believe I suggested this approach back about 6 months ago. There was a
> significant controversy about my use of the term "seems simple".
>
> Bob
>
> On Jun 15, 2013, at 9:51 AM, paul swed <paulswedb at gmail.com> wrote:
>
> > As I have been working on the d-psk-r its always been clear to me that a
> > simple non invasive approach to fix the 8170 class clocks existed. Since
> > the d-psk-r has consumed far more time then I ever would have guessed, I
> > would like to offer the approach up to the group. Maybe someone else has
> > some time to do this and it is easy. However with easy there are trade
> offs
> > as always.
> >
> > Here is teh approach
> > Using a wwvb clock chip like the MSA 8160 still obtainable (And no doubt
> > others say from an atomic clock)
> > Take the am time code out.
> > Feed that to a NE 602, SA602 or 612 series balanced modulator there all
> the
> > same as a AM modulator.
> > The 60Khz comes from a tuning fork crystal using the SA602 built in
> > oscillator.
> > Attenuate the output to 100 uv or so. I don't think you really need any
> > filtering.
> >
> > There you go. No real magic.
> > Possible downsides
> > Drift as the tuning fork crystals are OK. If true use a better source
> > I expect the tick to be slightly delayed by this method.
> > Regards
> > Paul
> > WB8TSL
> > _______________________________________________
> > time-nuts mailing list -- time-nuts at febo.com
> > To unsubscribe, go to
> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
> > and follow the instructions there.
>
> _______________________________________________
> time-nuts mailing list -- time-nuts at febo.com
> To unsubscribe, go to
> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
> and follow the instructions there.
>