Fellow time-nuts, This afternoon my EFOS B hydrogen maser has arrived and been set up. We just need to wait for it to lock up, which may take about a week. I can report a lot more on it, as I have a huge stack of documents. Hydrogren diassociator already gives that nice pink glow. Its been refurbished and measured, so it goes to 3E-15 at least, should reach 2E-15, with out trouble. It is a huge beast, so it took quite some effort to get the 250 kg heavy beast of the van, and in the house. Now we have enjoyed dinner and good drinks. I will do a bit of more cleanup before I meet my final destination for the evening, but it all looks good so far. I have 5 MHz, 180 MHz and 1440 MHz outputs to play with. So, I have now transitioned from OCXO, to Rubidium, to Cesium and to Hydrogren maser. So, this is why I think in terms of phase microstepper. Cheers, Magnus

https://www.lantmateriet.se/contentassets/bbc47979dfef4f338e3c4f8b139da2fb/simplified-transformations-between-itrf2014-and-etrs89-for-maritime-applications.pdf

-------- In message <0f7b7c12-c4a5-8e8a-bc3c-7c2da5354650@rubidium.se>, Magnus Danielson writes: >This afternoon my EFOS B hydrogen maser has arrived and been set up. Congratulations! >So, this is why I think in terms of phase microstepper. Next you'll need to read up on this: https://www.lantmateriet.se/contentassets/bbc47979dfef4f338e3c4f8b139da2fb/simplified-transformations-between-itrf2014-and-etrs89-for-maritime-applications.pdf :-) -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 phk@FreeBSD.ORG | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe Never attribute to malice what can adequately be explained by incompetence.

Magnus, I hope you'll be keeping a record of frequency drift of your EFOS B over time (not necessarily counting the settling-in period) and making this public. I'd like to compare the numbers with what I remember for the MHM-2010 at Arecibo, which amounted to slowing down by roughly 1E-13 per year. Dana On Fri, Dec 27, 2019 at 8:22 PM Magnus Danielson <magnus@rubidium.se> wrote: > Fellow time-nuts, > > This afternoon my EFOS B hydrogen maser has arrived and been set up. We > just need to wait for it to lock up, which may take about a week. I can > report a lot more on it, as I have a huge stack of documents. Hydrogren > diassociator already gives that nice pink glow. Its been refurbished and > measured, so it goes to 3E-15 at least, should reach 2E-15, with out > trouble. It is a huge beast, so it took quite some effort to get the 250 > kg heavy beast of the van, and in the house. Now we have enjoyed dinner > and good drinks. I will do a bit of more cleanup before I meet my final > destination for the evening, but it all looks good so far. > > I have 5 MHz, 180 MHz and 1440 MHz outputs to play with. > > So, I have now transitioned from OCXO, to Rubidium, to Cesium and to > Hydrogren maser. > > So, this is why I think in terms of phase microstepper. > > Cheers, > Magnus > > > > _______________________________________________ > time-nuts mailing list -- time-nuts@lists.febo.com > To unsubscribe, go to > http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com > and follow the instructions there. >

Dana, First up is getting logging of internal state. Then I get to setting up of GPS measurements. Environmentally this is not as ideal location as one would want, but I will monitor the ambient temperature as soon as I have logging. I think I have a few other things to log eventually, so it will be interesting to see, but it is when these things is allowed to shift around one sees their effect. Exactly how I make things available is yet to be figured out, but I will keep you guys informed and updated at least. Cheers, Magnus On 2019-12-28 14:07, Dana Whitlow wrote: > Magnus, > > I hope you'll be keeping a record of frequency drift of your EFOS B over > time > (not necessarily counting the settling-in period) and making this public. > I'd like > to compare the numbers with what I remember for the MHM-2010 at Arecibo, > which amounted to slowing down by roughly 1E-13 per year. > > Dana > > > On Fri, Dec 27, 2019 at 8:22 PM Magnus Danielson <magnus@rubidium.se> wrote: > >> Fellow time-nuts, >> >> This afternoon my EFOS B hydrogen maser has arrived and been set up. We >> just need to wait for it to lock up, which may take about a week. I can >> report a lot more on it, as I have a huge stack of documents. Hydrogren >> diassociator already gives that nice pink glow. Its been refurbished and >> measured, so it goes to 3E-15 at least, should reach 2E-15, with out >> trouble. It is a huge beast, so it took quite some effort to get the 250 >> kg heavy beast of the van, and in the house. Now we have enjoyed dinner >> and good drinks. I will do a bit of more cleanup before I meet my final >> destination for the evening, but it all looks good so far. >> >> I have 5 MHz, 180 MHz and 1440 MHz outputs to play with. >> >> So, I have now transitioned from OCXO, to Rubidium, to Cesium and to >> Hydrogren maser. >> >> So, this is why I think in terms of phase microstepper. >> >> Cheers, >> Magnus >> >> >> >> _______________________________________________ >> time-nuts mailing list -- time-nuts@lists.febo.com >> To unsubscribe, go to >> http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com >> and follow the instructions there. >> > _______________________________________________ > time-nuts mailing list -- time-nuts@lists.febo.com > To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com > and follow the instructions there.

On 12/27/19 2:29 PM, Magnus Danielson wrote: > Fellow time-nuts, > > This afternoon my EFOS B hydrogen maser has arrived and been set up. <snip> > trouble. It is a huge beast, so it took quite some effort to get the 250 > kg heavy beast of the van, and in the house. <snip> > > So, I have now transitioned from OCXO, to Rubidium, to Cesium and to > Hydrogren maser. > <snip> That certainly moves you up the scale of Time-Nuttery.. And OCXOs are the Gateway drug.

On Friday, December 27, 2019, 9:22:52 PM EST, Magnus Danielson <magnus@rubidium.se> wrote:  

What a lucky find!  Old but works and refurbished!  Congratulations. --------------------------------------- (Mr.) Taka Kamiya KB4EMF / ex JF2DKG On Friday, December 27, 2019, 9:22:52 PM EST, Magnus Danielson <magnus@rubidium.se> wrote: Fellow time-nuts, This afternoon my EFOS B hydrogen maser has arrived and been set up. We just need to wait for it to lock up, which may take about a week. I can report a lot more on it, as I have a huge stack of documents. Hydrogren diassociator already gives that nice pink glow. Its been refurbished and measured, so it goes to 3E-15 at least, should reach 2E-15, with out trouble. It is a huge beast, so it took quite some effort to get the 250 kg heavy beast of the van, and in the house. Now we have enjoyed dinner and good drinks. I will do a bit of more cleanup before I meet my final destination for the evening, but it all looks good so far. I have 5 MHz, 180 MHz and 1440 MHz outputs to play with. So, I have now transitioned from OCXO, to Rubidium, to Cesium and to Hydrogren maser. So, this is why I think in terms of phase microstepper. Cheers, Magnus _______________________________________________ time-nuts mailing list -- time-nuts@lists.febo.com To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.