[time-nuts] UBLOX LEA-5T Programming?

Daniel Watson watsondaniel3 at gmail.com
Mon Oct 12 20:16:40 EDT 2015


The REF-0 will accept a PPS signal from a non-timing GPS. I use the u-blox NEO-6M for a lot of my testing. That module can be had in the $12 range online. I have also gotten the REF-0 to lock to a Venus GPS and an FE-5680B rubidium standard.

Of course, using a less stable PPS signal will give you less performance out of the REF-0.

I have some information about operating the REF-0 standalone documented on my blog:



> On Oct 12, 2015, at 6:13 PM, Hal Murray <hmurray at megapathdsl.net> wrote:
> kb8tq at n1k.org said:
>> A $25 Ref-0 with the same GPS and a (now) documented MCU will do the same
>> thing as any other GPSDO.
> Does anybody know if the Ref-0 expects a clean PPS from the Ref-1 OCXO, or is 
> it happy with what comes out of a typical GPS unit?
> -- 
> These are my opinions.  I hate spam.
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