Re: [time-nuts] Datum 1000B 10 MHz Oscillator pinouts for the DB-9connector?

2005-07-20 Thread Robert Lutwak
The 1000B is still in production. Here's a link to the product folder: http://www.symmttm.com/products_pfr_1000B.asp It's no longer the standard oscillator in cesium products but can be found in the MHM-2010 hydrogen maser and the 1050A rackmount OCXO instrument. -RL

Re: [time-nuts] Re: UTC - A Cautionary Tale

2005-07-20 Thread Poul-Henning Kamp
In message [EMAIL PROTECTED], M. Warner Losh writes: In message: [EMAIL PROTECTED] OK. For leap years, we know from 1500ish until ~4000 (assuming they change it) the rule will be: if (y % 4 == 0) (y % 100 != 0 || y % 400 == 0)) leap-year else

Re: [time-nuts] This list

2005-07-20 Thread Poul-Henning Kamp
In message [EMAIL PROTECTED], David Kirkby writes: Joseph Gray wrote: I have noticed that this list seems to send emails out of sequence. I have seen other instances of this, but the two messages I just sent in response to the HP 5060A query arrived in reverse order and show time stamps 30

Re: [time-nuts] Re: UTC - A Cautionary Tale

2005-07-20 Thread Poul-Henning Kamp
In message [EMAIL PROTECTED], Mike S writes: I suppose you believe that DST makes the day longer, too. No Mike, but I belive some crania are to thick to make it worth arguing with the inhabitant. Welcome to my kill file. -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 [EMAIL

Re: [time-nuts] Re: UTC - A Cautionary Tale

2005-07-20 Thread Mike S
At 07:39 AM 7/20/2005, Poul-Henning Kamp wrote... In message [EMAIL PROTECTED], Mike S writes: I suppose you believe that DST makes the day longer, too. No Mike, but I belive some crania are to thick to make it worth arguing with the inhabitant. You misspelled the word too in your

[time-nuts] GPS timing receivers - what now?

2005-07-20 Thread Jim Miller
Hi, Now that the future of the Motorola timing receivers is uncertain due to the SiRF sale, does anyone have a favorite replacement receiver for timing? Synergy quoted me 2-4 weeks on an M12+ and eval board but did not sound certain that it would even be available at all. Thanks, Jim

Re: [time-nuts] GPS timing receivers - what now?

2005-07-20 Thread Poul-Henning Kamp
In message [EMAIL PROTECTED], Jim Miller writes: Hi, Now that the future of the Motorola timing receivers is uncertain due to the SiRF sale, does anyone have a favorite replacement receiver for timing? Synergy quoted me 2-4 weeks on an M12+ and eval board but did not sound certain that it

RE: [time-nuts] GPS timing receivers - what now?

2005-07-20 Thread Randy Warner
Jim, The M12+T will continue to be available for the time being (hopefully til the end of the year.) Negotiations are currently underway to continue production of the FS Oncore and also the follow on to the M12+, the M12M. The M12M is identical to the M12+ except that it uses a different front

Re: [time-nuts] Re: UTC - A Cautionary Tale

2005-07-20 Thread Mike S
At 12:32 PM 7/20/2005, Chris O'Byrne wrote... Mike wrote They missed the event by 7 seconds instead of under 1. A one second difference in UT1 does not correspond to a one second difference in the observed time of the eclipse in an atomic timescale ... I now think that is wrong - I now think

Re: [time-nuts] Datum 1000B 10 MHz Oscillator pin outs for the DB-9connector?

2005-07-20 Thread rlutwak
About the time I posted the link to the 1000B datasheet, I noticed that it doesn't have the pinout you're looking for (but I went ahead and posted it anyway). I also noticed that the link to Product Manual is effectively dead. I sent a note to both the product manager and WWW-site manager to

Re: [time-nuts] Datum 1000B 10 MHz Oscillator pin outs for the DB-9connector?

2005-07-20 Thread Brooke Clarke
Hi Robert: The part number on the 1000B is 05818-119. Thanks for the pinout info, Brooke Clarke [EMAIL PROTECTED] wrote: About the time I posted the link to the 1000B datasheet, I noticed that it doesn't have the pinout you're looking for (but I went ahead and posted it anyway). I also

Re: [time-nuts] GPS timing receivers - what now?

2005-07-20 Thread Bjorn Gabrielsson
Jim Miller [EMAIL PROTECTED] writes: On Jul 20, 2005, at 11:04 AM, Poul-Henning Kamp wrote: Has anybody tried to contact SiRF ? I have not, it was my understanding that SiRF is a chipset company, not a sensor board mfg; however I could very well be mistaken. They are a _big_ chipset

Re: [time-nuts] GPS timing receivers - what now?

2005-07-20 Thread Poul-Henning Kamp
In message [EMAIL PROTECTED], Bjorn Gabrielsson writes: Jim Miller [EMAIL PROTECTED] writes: On Jul 20, 2005, at 11:04 AM, Poul-Henning Kamp wrote: =20 Has anybody tried to contact SiRF ? =20 I have not, it was my understanding that SiRF is a chipset company, not a sensor board mfg; however

Re: [time-nuts] GPS timing receivers - what now?

2005-07-20 Thread Jim Miller
On Jul 20, 2005, at 3:06 PM, Poul-Henning Kamp wrote: The really interesting one would be to get a pci board with the host-assisted SiRF GPS chip and be able to do our own math on the raw measurements :-) That would be neat. ISTR that the Garmin GPS-25 boards could be coerced to give raw

Re: [time-nuts] GPS timing receivers - what now?

2005-07-20 Thread Jim Miller
On Jul 20, 2005, at 3:06 PM, Poul-Henning Kamp wrote: The really interesting one would be to get a pci board with the host-assisted SiRF GPS chip and be able to do our own math on the raw measurements :-) Another (probably crazy) thought came to mind... I wonder if the GNURadio can be used

Re: [time-nuts] GPS timing receivers - what now?

2005-07-20 Thread Poul-Henning Kamp
In message [EMAIL PROTECTED], Jim Miller writes: On Jul 20, 2005, at 3:06 PM, Poul-Henning Kamp wrote: The really interesting one would be to get a pci board with the host-assisted SiRF GPS chip and be able to do our own math on the raw measurements :-) Another (probably crazy) thought came

Re: [time-nuts] GPS timing receivers - what now?

2005-07-20 Thread Tom Van Baak
For a project I'm doing this summer I've looked at quite a few old and new GPS OEM recievers. One possible alternative, which I've been testing this week, is a Trimble Resolution-T GPS Timing Receiver. Since you asked, the preliminary test report is at: http://www.leapsecond.com/pages/res-t/

Re: [time-nuts] This list

2005-07-20 Thread John Ackermann N8UR
Joseph Gray wrote: Re the Rolex -- I feel compelled to let the list know that all the servers at febo.com run ntp, and look to my (at the moment) two stratum 1 servers -- one gets its time from a Z3801A GPSDO, while the other uses both a Z3801A and a Spectracom WWVB receiver. I just checked,

Re: [time-nuts] This list

2005-07-20 Thread John Ackermann N8UR
Poul-Henning Kamp wrote: Actually, that is not the case. Postfix is far superior to sendmail when it comes to maillists. At one point when sendmail was reenabled by accident in the FreeBSD mailsystem, it got four hours behind in 15 minutes. I'm using Exim, which is the standard MTA in

Re: [time-nuts] GPS timing receivers - what now?

2005-07-20 Thread John Ackermann N8UR
Jim Miller wrote: Another (probably crazy) thought came to mind... I wonder if the GNURadio can be used to demodulate signals at L1 either directly or through a downconverter/LNB.. We could make a software defined GPS receiver - a GNUGPS! Twiddling the software could make it support