[time-nuts] Re: Ublox M6T -M8T

[Alex Pummer]

Yes, we did,

and learned, that the device -- the ublox6 --Â  forgets the the program 
very fast, thus we added one arduino, which loads the program into the 
ublox at every new turn on. By using low output frequency -- 10kHz -- 
the jitter is low, at higher output frequency the jitter is getting 
larger, presumably because the internal clock of the ublox is a "free 
running " crystal oscillator.
We did not do any "deep quality investigation" to the output of our 
10MHz signal source output, 10 is just used as frequency calibrator for 
instruments.
I made one phase phase comparation, --comparator one input  GPS -ublox 
derived 60kHz the other input is wwvb 60kHz from Fort Collins Colorado, 
it show the typical phase change during the day of the wwvb.

73

Alexander Pummer[hard ware] + David Fannin [soft ware]

On 5/28/2022 10:05 AM, R&M Putz via time-nuts wrote:
> Has anyone done anything with the Ublox GPS timing receivers? As it appears the
> Navman with the 10khz outputs seem to be drying up, I'm wondering about the Time Pulse 2 output being set to 10 Khz or 100 Khz. Thoughts anyone?
> Rich
> W9ENG
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