[time-nuts] Re: Thunderbolts ...
Newer module: $650.00 meh On 2021-07-17 19:45, Gary E. Miller wrote: Yo Dave! On Sat, 17 Jul 2021 00:06:42 +0100 Dave wrote: I'm a bit of a newbie at this, but is it possible to buy thunderbolts WHy? They newer Trimble GNSS timing modules work beter. Like the ICM SMT 360: https://timing.trimble.com/products/gnss-receivers/icm-smt-360-multi-gnss-timing-module/ If so, where ? Hobbyist GNSS receivers are in short supply. You gotta look harder than before COVID. An ICM SMT 360 on a carrier board is $125: https://novotech.com/icm-smt-360-337.html RGDS GARY --- Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703 g...@rellim.com Tel:+1 541 382 8588 Veritas liberabit vos. -- Quid est veritas? "If you can't measure it, you can't improve it." - Lord Kelvin ___ time-nuts mailing list -- time-nuts@lists.febo.com -- To unsubscribe send an email to time-nuts-le...@lists.febo.com To unsubscribe, go to and follow the instructions there. -- The whole world is a straight man. -- Dr. Don Latham AJ7LL PO Box 404, Frenchtown, MT, 59834 VOX: 406-626-4304 ___ time-nuts mailing list -- time-nuts@lists.febo.com -- To unsubscribe send an email to time-nuts-le...@lists.febo.com To unsubscribe, go to and follow the instructions there.
[time-nuts] Re: Thunderbolts ...
Yo Dave! On Sat, 17 Jul 2021 00:06:42 +0100 Dave wrote: > I'm a bit of a newbie at this, but is it possible to buy thunderbolts WHy? They newer Trimble GNSS timing modules work beter. Like the ICM SMT 360: https://timing.trimble.com/products/gnss-receivers/icm-smt-360-multi-gnss-timing-module/ > If so, where ? Hobbyist GNSS receivers are in short supply. You gotta look harder than before COVID. An ICM SMT 360 on a carrier board is $125: https://novotech.com/icm-smt-360-337.html RGDS GARY --- Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703 g...@rellim.com Tel:+1 541 382 8588 Veritas liberabit vos. -- Quid est veritas? "If you can't measure it, you can't improve it." - Lord Kelvin pgp0narUIUY8R.pgp Description: OpenPGP digital signature ___ time-nuts mailing list -- time-nuts@lists.febo.com -- To unsubscribe send an email to time-nuts-le...@lists.febo.com To unsubscribe, go to and follow the instructions there.
[time-nuts] Re: RTC DS3231: how well can it be regulated?
On Sonntag, 18. Juli 2021 04:06:56 CEST Tim S wrote: > I did want to pose the question, are you aware of the existence > of DS1341/DS1342 RTCs? These parts have a 1pps (or power-line 50/60Hzr > following built-in. On these chips the PPS alignment is done by selecting an edge from a 128Hz division of the XTAL input, which is always completely free-running. This results in a skew window of almost 8ms on the PPS pulse and large deviations in holdover. So while I can see them working very well for a different application, that's not what I was looking for. The DS3231M can be tuned from the datasheet value of ±5ppm or about half a second per day to around 15ms/day holdover. I have one module lying around that I set up a year ago and then disconnected to let it run on battery. Based on the experience with the active one over that same year (which you've seen the plots of) I think it should still be within 30s when I eventually connect it again, which would be absolutely amazing considering the price of these modules. Regards, Achim. -- +<[Q+ Matrix-12 WAVE#46+305 Neuron microQkb Andromeda XTk Blofeld]>+ Factory and User Sound Singles for Waldorf Q+, Q and microQ: http://Synth.Stromeko.net/Downloads.html#WaldorfSounds ___ time-nuts mailing list -- time-nuts@lists.febo.com -- To unsubscribe send an email to time-nuts-le...@lists.febo.com To unsubscribe, go to and follow the instructions there.
[time-nuts] Re: Assistance Please- need atomic clock time datasets for study
The BIPM Circular-T would be a good place to start. 30s phase data used to be available from each participating lab IIRC - they just updated their webpages, so that may have been moved out of the public eye. BR, Ole On Sat, Jul 17, 2021 at 9:17 PM Dwayne wrote: >Fellow Time-nuts; >I am working on an interesting research project focused on the phase >relationship of error accumulation across geographically dispersed >clocks. >Early research shows some correlation, but I need access to larger >datasets. (Fine grained data log of precision clocks, indexed to an >international time standard) >Can anyone on this list help point me to a helpful data source? >A ideal data set would consist of years worth of clock samples, from >multiple atomic clocks that are geographically dispersed, at fixed >locations. >I can adjust my project somewhat in order to accommodate available >data, so any insight from this audience is welcome. >Key is that the data should come from multiple clocks (three as >minimum- more =better), and the data must cover a simultaneous time >period. >I can use data from a single clock, and pair it with others, provided >the collection dates overlap. >Sources? >Thanks in advance. >Dwayne Esterline > ___ > time-nuts mailing list -- time-nuts@lists.febo.com -- To unsubscribe send > an email to time-nuts-le...@lists.febo.com > To unsubscribe, go to and follow the instructions there. > ___ time-nuts mailing list -- time-nuts@lists.febo.com -- To unsubscribe send an email to time-nuts-le...@lists.febo.com To unsubscribe, go to and follow the instructions there.
