[time-nuts] Re: NIST Technical Note 2187 - A Resilient Architecture for the Realization and Distribution of Coordinated Universal Time to Critical Infrastructure Systems in the United States
Yes! Thanks, Magnus. DaveD > On Nov 14, 2021, at 19:29, Bob kb8tq wrote: > > Cool !!! > >> On Nov 14, 2021, at 6:57 PM, Magnus Danielson via time-nuts >> wrote: >> >> Fellow time-nuts, >> >> NIST just published the technical note 2187 that probably some of you might >> find interesting. It's for free download here: >> >> https://nvlpubs.nist.gov/nistpubs/TechnicalNotes/NIST.TN.2187.pdf >> >> I think you will find quite a bit of interesting material in there. Just >> recall, the fine-print says that mention of vendors and solutions is for >> technical completeness and not is any form of endorsement, other vendors and >> products exists that may be just as good or even better. >> >> This is part of a larger context, but I think you will find a lot of >> interesting things in there. >> >> Cheers, >> Magnus >> ___ >> 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. ___ 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: NIST Technical Note 2187 - A Resilient Architecture for the Realization and Distribution of Coordinated Universal Time to Critical Infrastructure Systems in the United States
Cool !!! > On Nov 14, 2021, at 6:57 PM, Magnus Danielson via time-nuts > wrote: > > Fellow time-nuts, > > NIST just published the technical note 2187 that probably some of you might > find interesting. It's for free download here: > > https://nvlpubs.nist.gov/nistpubs/TechnicalNotes/NIST.TN.2187.pdf > > I think you will find quite a bit of interesting material in there. Just > recall, the fine-print says that mention of vendors and solutions is for > technical completeness and not is any form of endorsement, other vendors and > products exists that may be just as good or even better. > > This is part of a larger context, but I think you will find a lot of > interesting things in there. > > Cheers, > Magnus > ___ > 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.
[time-nuts] NIST Technical Note 2187 - A Resilient Architecture for the Realization and Distribution of Coordinated Universal Time to Critical Infrastructure Systems in the United States
Fellow time-nuts, NIST just published the technical note 2187 that probably some of you might find interesting. It's for free download here: https://nvlpubs.nist.gov/nistpubs/TechnicalNotes/NIST.TN.2187.pdf I think you will find quite a bit of interesting material in there. Just recall, the fine-print says that mention of vendors and solutions is for technical completeness and not is any form of endorsement, other vendors and products exists that may be just as good or even better. This is part of a larger context, but I think you will find a lot of interesting things in there. Cheers, Magnus ___ 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: GPS Elevation Mask Values.
Dan, could it be that you have a spoofer in the area? Dana On Sun, Nov 14, 2021 at 4:27 PM Dan Kemppainen wrote: > Hi, > > Still trying to sort out the cause of that 'finger' of signal. > > Hooked up two more different GPS modules. A ZED-F9P, and a Jackson Labs > LTE-LITE eval board. > > The F9P sees the same finger in the north as the other Ublox GPS module. > The Venus receiver in the LTE Lite does not report signal above the > north pole. See attached images. > > The data for these images was all recorded concurrently. All three GPS > Modules are attached to a splitter on the same antenna, with nearly the > same length jumper cables running from the splitter to each module. > > Currently running the same test again with the Ublox Timing module, the > LTE Lite, and an adifruit "Ultimate GPS Breakout board V3" (MediaTek > MT3339). > > Dan > > > > On 11/11/2021 3:30 AM, time-nuts-requ...@lists.febo.com wrote: > > Message: 1 > > Date: Wed, 10 Nov 2021 09:54:09 -0500 > > From: Dan Kemppainen > > Subject: [time-nuts] Re: GPS Elevation Mask Values. > > To:time-nuts@lists.febo.com > > Message-ID: > > Content-Type: text/plain; charset=utf-8; format=flowed > > > > Hi, > > > > So, that finger of signal appearing above the north pole shows up even > > after the GPS survey is done. Any ideas on how to figure out what's > > causing that? > > > > My first thought is to try look at it with a different model of GPS unit. > > > > Is it possible it could be a signal reflection in the cable or something > > weird going on in the feed??? > > > > Another thought would be to log the GPS data, to sort out which birds > > the GPS thinks is up there. Comparing to where they actually are would > > help sort out what the signal might be bouncing off of. > > > > Dan > > > ___ > 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.
[time-nuts] Efratom MFS modules for sale to a good time-nut home
hi, I checked with Tom and he OK-ed me posting this: As you probably have seen my ham buddy Dave & I possess some surplus modules from the Efratom MFS that we would like sell to a "time-nutty" enthousiast for a "time-nutty" price. Or "amateur price", as we ham's tend to call it here in NL. We prefer to not put it 'on the Bay' as you probably can imagine. We have as surplus: - MGPS GPSD module to discipline the Rb (the two Rb are 'keepers' ;-) incl bulkhead & antenna - MBU battery backup units (Qty 2) - MFC 2.048MHz synthesizer module - MRM monitoring module - MDC-RR module The special DIN41612 connectors that go onto the rear of these modules are included. All of it comes from a military mobile sat groundstation, housed in an air-conditioned truck mounted sheltercontainer. I tested it before dismantling the hulking 6U double rack depth unit. Please contact me off-list at w...@xs4all.nl in case you are interested. Equipment is located in Arnhem, the Netherlands. Pick-up is OK, as is shipping at buyer's cost. best, Wilko ___ 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.
