[time-nuts] UBlox as a reference clock source - accuracy ??

[Askild]

Hi,

If you want to use it as a 10MHz ref for other instruments, you might
consider building a GPSDO with it.
Here is one:
https://www.eevblog.com/forum/projects/lars-diy-gpsdo-with-arduino-and-1ns-resolution-tic/

All the information is in the first post. If you read the complete thread,
you will get even more information..

BR,
Askild


On Thu, Jun 20, 2019 at 12:00 AM David Slipper <softfoot at hotmail.com> wrote:

>
> Hi, I am running a UBlox Neo-6M and have configured it with LadyHeather
> to produce a 10MHz output for use as a better reference for a couple of
> instruments.
>
> Is there any way with LH to determine the accuracy of the 10MHz output
> in ppm??
>
> I am aware that the 10MHz output is jittery on my scope (is that phase
> noise??) due to the fact that the internal clock is divided by a
> non-integral value to reach 10 (I believe the internal oscillator is
> 16MHz).  If I set it to produce 8MHz it is rock solid.
>
> I am really interested in the long term accuracy of the 10MHz signal -
> say over 24 hours.
>
> I'm a bit of a newbie at this so any clarification would be welcome.
>
> TIA Dave
>
>
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