[time-nuts] WWVB and Chronverter update

paul swed paulswedb at gmail.com
Fri Aug 24 09:22:33 EDT 2018


Thank you for the responses.
I have not reached out to him yet. Want to see if there are other issues
and I can easily add an external 60 KHz source and modulator right now to
verify the other functionality.
There is no schematic nor source code its a 8 pin uproc chip and as such
has almost no IO. I can easily see a very simple fix but needs a change to
the code behavior. (The chip it self can not do the modulation function.
Thats why its OOK).
But if the carrier were left on there is a LED that blinks to the time code
sequence and that can drive a 1 transistor or diode modulator.
Regards
Paul
WB8TSL

On Fri, Aug 24, 2018 at 3:14 AM, Dana Whitlow <k8yumdoober at gmail.com> wrote:

> Is there a schematic published for the Chronverter?  I agree with Didier
> that the
> OOK issue *ought *to be pretty easy to fix, and I'd like to look into that
> myself.
>
> Dana
>
>
> On Thu, Aug 23, 2018 at 9:00 PM Didier Juges <shalimr9 at gmail.com> wrote:
>
> > Have you tried to contact the manufacturer? It sounds like something that
> > should be easy to fix and that he would want to fix.
> >
> > Didier KO4BB
> >
> > On Thu, Aug 23, 2018, 8:55 PM paul swed <paulswedb at gmail.com> wrote:
> >
> > > Hello to the group.
> > > Had sometime to hook up the chronverter wwvb simulator.
> > > Numbers of details.
> > > The software and operation are clear.
> > > Everything is easy to setup.
> > > Bad news.
> > > Though the system when set to wwvb puts out a signal on 60Khz its on
> off
> > > keying.
> > > WWVBs signal is reduced carrier by some 14db.
> > > As such any of the WWVB clocks of quality/phase tracking do not lock
> and
> > do
> > > not decode.
> > > I have not tried the cheap clocks yet that I suspect will work.
> > > The actual carrier out is a healthy 0 dbm.
> > >
> > > Some issues with commands and the system seeming to lock up requiring
> > power
> > > cycles.
> > >
> > > With respect to the carrier. The chronverter is elegant in the fact
> that
> > it
> > > can generate the 60 KHz frequency and other LF signals. But I will need
> > to
> > > add an external 6 MHz oscillator divider and modulator if I want to use
> > it
> > > with the good receivers.
> > > Adds power and complexity.
> > > Regards
> > > Paul
> > > WB8TSL
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