[time-nuts] GPS for Nixie Clock

John Swenson johnswenson1 at comcast.net
Fri Jul 15 01:19:46 EDT 2016


Why I was even thinking about it at all was that one of the models I 
looked at said the 10KHz was more accurate than the 1PPS, so I was kind 
of thinking about that. If the Ubloxes have 1PPS which are just as good 
then there is no reason to think about a 10KHz.

John S.

On 7/14/2016 9:45 PM, Chris Albertson wrote:
> On Thu, Jul 14, 2016 at 1:34 AM, Hal Murray <hmurray at megapathdsl.net> wrote:
>
>> If you are building a PLL, it's a lot easier to filter a 10KHz signal than a
>> 1 Hz signal.
>
> You are correct.  But this guy is building a nixie tube clock.  The
> clock should increment the seconds at the tick of the UTC second.
> There really is no way to do this without using the PPS.  The serial
> data is not aligned with the UTC "tick"
> GPS receivers work just like the old telephone time service "At the
> tone the time will be..." and then comes the leading edge of the 1PPS.
>
> If he were building a frequency standard then, yes the 10KHz signal
> would be the best one to use.
>



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