Very interesting. When I built my Arduino Due-based Rb clock (currently disassembled) around a NEO-M8T (more specifically, an EVK-M8T), I used the EXTINT to measure the difference between my onboard PPS and the GPS top-of-second. I ran it pretty long term without seeing any lost or duplicated TIM-TP messages. Is it possible that you had some mundane issues with drive levels or coupling, there?
Andrew KC2G On Mon, Aug 23, 2021, 9:52 PM John Ackermann N8UR <[email protected]> wrote: > In 2020 I did an extensive evaluation of the timing ability of the > u-blox LEA-M8F, NEO-M8N, NEO-M8T, NEO-M9N, ZED-F9P, and ZED-F9T. The > work was made possible by support from the HamSci consortium > (https://hamsci.org) under NSF grants supporting HamSci activities. > > I was sure I'd posted about the paper on time-nuts, but I can't find any > record that I did, so this is a belated announcement. It's available > for download from > > > https://hamsci.org/sites/default/files/publications/2020_TAPR_DCC/N8UR_GPS_Evaluation_August2020.pdf > > As BobC says, "Lots of fun!" > > John > > _______________________________________________ > time-nuts mailing list -- [email protected] -- To unsubscribe send > an email to [email protected] > To unsubscribe, go to and follow the instructions there. > _______________________________________________ time-nuts mailing list -- [email protected] -- To unsubscribe send an email to [email protected] To unsubscribe, go to and follow the instructions there.
