Re: [time-nuts] ISS NTP operation problems.

Is this a new problem or has it being happening since day 1? Jim Palfreyman On Fri, 8 Jan 2021 at 5:42 pm, Steven Sommars wrote: > At the end of November a question > <https://lists.ntp.org/pipermail/questions/2020-November/041883.html>was > posed to the ntp.org list concerni

[time-nuts] Broken 5370B

So I have a 5370B with a stuffed channel. What should I do with the unit? Jim P.S. I'm in Australia. P.P.S. As a replacement I'm eyeballing the TAPR/TICC option but AUD$54 in postage. Ouch! ___ time-nuts mailing list -- time-nuts@lists.febo.com To

[time-nuts] Well priced GPSDO that outputs IRIG-B

need to put it in a box and give it power. Just wondering if anyone had any other suggestions? Jim Palfreyman ___ time-nuts mailing list -- time-nuts@lists.febo.com To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com

[time-nuts] White Rabbit

Anyone here have experience with White Rabbit products? Any thoughts would be appreciated. Jim ___ 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

Re: [time-nuts] Do ordinary clouds adversely affect GPS reception?

I see no attenuation at 1376 MHz (close to GPS frequency) when observing pulsars with a radio telescope. Even the brightest pulsar (Vela) is so much fainter than a GPS signal which boom in when they happen to pass into the telescope's beam. It definitely happens at higher frequencies though. Up

Re: [time-nuts] Talking Clock

Hi All, I have the Tasmanian unit of the German made TTL based speaking clock running in my garage. I've kept it going since it was decommissioned in the mid 2000s. In true Time-Nuts fashion I have it synchronised to the GPS. For extra fun, I broadcast it on FM 107.7 using a (legal) low power

Re: [time-nuts] 5370B input board

So that's a "no" I'm guessing. :-( Jim On Sun, 21 Jul 2019 at 17:38, Jim Palfreyman wrote: > Hi All, > > Has there been any advances on the failing chips (5088-7061/5088-7062) on > the 5370B? > > Jim > > ___ t

[time-nuts] 5370B input board

Hi All, Has there been any advances on the failing chips (5088-7061/5088-7062) on the 5370B? Jim ___ 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

Re: [time-nuts] Junior Time Nuts looking for HP5370B

I absolutely loved mine. Until that input chip went. :-( On Sat, 20 Jul 2019 at 00:01, Taka Kamiya via time-nuts < time-nuts@lists.febo.com> wrote: > Does anyone have HP5370B that is working well for sale? I am in Central > Florida USA. Please respond to me off list with your offer. > >

Re: [time-nuts] It is possible to "recharge" a hydrogen maser?

Hi Luis, I have experience with the NASA NR series if that’s what you have. Blue and about the size of a household fridge, wth lovely 80s red LEDS on the front. If it is this model, I’d expect it is more likely that your ion pump(s) need replacing. I can send all the documentation you need.

Re: [time-nuts] Paper tip: Atomic Clocks for Geodesy

73 pages! On Tue, 7 May 2019 at 9:38 pm, Ole Petter Ronningen wrote: > Hi, all > > I just stumbled across a nice review paper from last year: ( > https://arxiv.org/ftp/arxiv/papers/1803/1803.01585.pdf) that perhaps > others > will find interesting. > > Primarily geared towards geodesy as the

Re: [time-nuts] The Clock That Changed the World (BBC History of the World)

Thanks Brooke. I remember walking into the Greenwich Museum for the first time, NOT KNOWING that Harrison's clocks were in there. And ticking away. Just amazing. Jim On Mon, 29 Apr 2019 at 13:00, Brooke Clarke wrote: > Hi: > > Video of working Harrison clocks. > https://youtu.be/T-g27KS0yiY

Re: [time-nuts] multimeter

py with it. I find myself reaching > >> for the U1241B more often than the Fluke 189 as of late. It's smaller... > >> > >> All that said, I'm certain you'll be happy 87 for what you plan on doing > >> with it. > >> > >> Dan > &g

Re: [time-nuts] multimeter

Hi All, Thanks so much everyone for your comments. I especially liked "get the orange one". Because that's what I did get (I think it's orange - could be yellow). I was deliberately vague (apologies) but I just wanted a broad response. Which I got. I've settled on the Fluke 87V. It's on it's

[time-nuts] multimeter

Hi all, I think I'm in the market for a new digital multimeter. Could I have some recommendations? Jim ___ 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

Re: [time-nuts] leapseconds, converting between GPS time (week, second) and UTC

For the record, when using R, the package "lubridate" (which is part of the brilliant "tidyverse") does handle leap seconds. Dr Jim Palfreyman On Thu, 17 Jan 2019 at 07:08, Fiorenzo Cattaneo wrote: > Yes correct. NTP behaves as intended. I called NTP issue as that's

Re: [time-nuts] Software

Interesting read. I've been programming since the mid 70's (started with a 2650 and TI59). Graduated in Computer Science and mathematics in 1984, did Honours in Computer Science in 1985. Fast forward decades and I completed a Masters in Astrophysics and a Ph.D. in astrophysics as well. Hate