[time-nuts] NPL Open House 2018 prepare for 2019

Hello This is a very early warning for the 2019 event. Thursday 17/5 Michael, OZ2ELA, and I attended the NPL Open House 2018 event: Our visit was both to attend the event but also to see what NPL uses the Next Generation Beacons units for. It was a really int

Re: [time-nuts] Anyone have experience with this antenna?

Hi Indeed a radome may distort the antenna pattern. In teh case of DIY projects the trick that most can apply is to take a piece of the radome material and put it into a microwave own. If it doesn't get hot it is OK for most DIY cases. Infinion have some nice GNSS MMICs e.g. BGA924N6

[time-nuts] Anyone have experience with this antenna?

Hi Besides the RF characteristics it may also be worth considering the quality of the plastics used. Over time water ingress may become an issue. Fours years after the installation of a CN brand antenna, sourced locally so probably not counterfeit either, we had to replace it at OZ7IGY www.oz7i

Re: [time-nuts] Simple open source microcontroller solution to tune DDS needed

Hi list Here is an Arduino way to control AD9833, AD9850, AD9851, AD9912 and AD9913 Alternatively using an Atmega128A to control an AD9912: Bo ___ time-nuts mailing li

[time-nuts] 1pps isolation

Hi TOSLINK devices may be one way to provide galvanic isolation through an optical connection. One possible solution can be seen here: Bo ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go

Re: [time-nuts] TU30 jump second

Hi OK I will try out to see what Lady Heather can do for me. However, I use a MCU for reading the GPS and not all the time so perhaps I have to change this. Björn can you remember something about the reason for the behavior? Thanks Bo ___ time-nuts m

Re: [time-nuts] TU30 jump second

Hi all The data can be a bit hard to read in an email. So I will give it another try. PC-time | Diff. | GPS-time | Diff. ... 011606.005 | 0.992 | 011604 |1 011607.013 | 1.008 | 011605 |1 011608.005 | 0.992 | 011607 |2 <--- The issue 011609.013 | 1.008 | 011608 |1 011610.004 | 0.991 | 011609 |1 ..

Re: [time-nuts] TU30 jump second

Hi The odd behavior is seen in NMEA mode. I have not tried in binary mode. Bo ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.

[time-nuts] TU30 jump second

Hi List Like many of you I also use a Navman Jupiter TU30 in a GPSDO. Besides the 10 kHz used for the PLL I also have a display showing time. But since a couple of years, Jan 15?, the time sometimes jumps -1 s and and then later returns by jumping +1 s Please see an example of the latter below: