Re: [time-nuts] WWVB / Xtendwave patents

2012-09-28 Thread Joe Gwinn
Office will then consider all prior art received when deciding to grant or to deny a patent. Joe Gwinn ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow

Re: [time-nuts] wwvb weak on east coast especially when the pre-amps under water.

2012-05-15 Thread Joe Gwinn
dry air, so all leaks are outward and the dew point is never reached inside the box. Joe Gwinn ___ 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.

Re: [time-nuts] Neutrinos not so fast? (defective connector)

2012-02-24 Thread Joe Gwinn
At 3:24 PM + 2/24/12, time-nuts-requ...@febo.com wrote: Date: Fri, 24 Feb 2012 14:42:36 +0100 From: b...@lysator.liu.se To: Discussion of precise time and frequency measurement time-nuts@febo.com Subject: Re: [time-nuts] Neutrinos not so fast? (defective connector) Bj?rn, [snip]

Re: [time-nuts] Thermal insulation choice?

2012-01-06 Thread Joe Gwinn
urethane foams available from building supply houses. Joe Gwinn ___ 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.

Re: [time-nuts] Thermal insulation choice?

2012-01-06 Thread Joe Gwinn
bead sheet. I will have to check out foam board next time. Both would be more difficult to cut without a hot wire knife. Balsa wood cuts very easily with a sharp knife, glues very well with carpenters' glue, and will not degrade over time. Joe Gwinn

Re: [time-nuts] crunching numbers from XOR phase detector

2012-01-04 Thread Joe Gwinn
-coax.com/pages/technicalinfo/applications/27.asp Joe Gwinn ___ 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.

Re: [time-nuts] Low noise power supplies for time nuts circuitry

2011-11-24 Thread Joe Gwinn
the output of a 78xx or the like regulator. Joe Gwinn ___ 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.

Re: [time-nuts] Fast than light neutrino

2011-09-26 Thread Joe Gwinn
to establish a paper link between CERN and Gran Sasso which would be independent of the current link. Why do all that, versus just running an amplified fiber between CERN and Gran Sasso? Two links are likely to be twice the trouble and error. Joe Gwinn

Re: [time-nuts] Fast than light neutrino

2011-09-23 Thread Joe Gwinn
assumes *very* subtle, given that none of the ~100 coauthors could find it, and it won't have been for lack of trying. Now the world physics community is on the case, so it may not take all that long. Joe Gwinn ___ time-nuts mailing list -- time-nuts

Re: [time-nuts] live 50 Hz measurements

2011-07-01 Thread Joe Gwinn
more or less sinusoidally, this being the residue after the average clock drift is removed. Joe Gwinn. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow

Re: [time-nuts] Choke Ring Pictures

2010-03-14 Thread Joe Gwinn
this along, by increasing the capacitance. Joe Gwinn ___ 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.

Re: [time-nuts] Rack-mounting an LPRO? (Heatpipe cooler)

2010-02-28 Thread Joe Gwinn
assembly integrated with the heatsink plate is most likely a heat pipe of some kind, as that's what Thermacore makes. It's a model 2644, from the nameplate, but no joy at the Thermacore.com website. Joe Gwinn ___ time-nuts mailing list -- time-nuts

[time-nuts] Variable Conductance Heat Pipes for temperature control

2010-01-23 Thread Joe Gwinn
%3D4294915469 Copper-water-nitrogen VCHPs seem simple enough for fabrication in a home shop, although long-term retention of nitrogen (or any such gas) will require hard brazed or welded hermetic seams and seals (versus soft solder and ball valves). Joe Gwinn

Re: [time-nuts] Variable Conductance Heat Pipes for temperature control

2010-01-23 Thread Joe Gwinn
is in the book I left at work. It was pretty good, especially considering that the heatsink system is wholly passive and electronics-free. Joe Bob On Jan 23, 2010, at 1:33 PM, Joe Gwinn wrote: Back in December 2009 I proposed (in Re: [time-nuts] Cheap Rubidium (heatpipe cooling for)) use

Re: [time-nuts] Cheap Rubidium (heatpipe cooling for)

2009-12-27 Thread Joe Gwinn
My comments are in-line, below On Fri, Dec 25, 2009 at 4:38 PM, Joe Gwinn joegw...@comcast.net wrote: At 12:45 AM + 12/25/09, time-nuts-requ...@febo.com wrote: Date: Thu, 24 Dec 2009 17:14:38 -0700 From: Robert Darlington rdarling...@gmail.com Subject: Re: [time-nuts] Cheap Rubidium

Re: [time-nuts] Cheap Rubidium (heatpipe cooling for)

2009-12-25 Thread Joe Gwinn
approach to carry away the heat. It's got a pump to move the water, but the rest of it is fairly simple. Bob On Dec 24, 2009, at 2:49 PM, Joe Gwinn wrote: A dodge occurs to me - a homebrew heat pipe: http://en.wikipedia.org/wiki/Heat_pipe. Make the cold plate of copper, to which

Re: [time-nuts] Cheap Rubidium

2009-12-24 Thread Joe Gwinn
At 10:06 PM + 12/23/09, time-nuts-requ...@febo.com wrote: Date: Thu, 24 Dec 2009 09:46:13 +1300 From: Bruce Griffiths bruce.griffi...@xtra.co.nz Subject: Re: [time-nuts] Cheap Rubidium To: Discussion of precise time and frequency measurement time-nuts@febo.com Joe Gwinn wrote

Re: [time-nuts] Cheap Rubidium (heatpipe cooling for)

2009-12-24 Thread Joe Gwinn
be adapted. Anyway, a heat pipe system will stabilize the coldplate temperature fairly accurately despite variations in thermal load, has no moving or electrical parts, and may be sufficient by itself. If not sufficient, it can be used as the outer stage in a two-stage ovening scheme. Joe

Re: [time-nuts] Cheap Rubidium

2009-12-23 Thread Joe Gwinn
temperature by actively controlling the speed of the fan (or pump) driving air (or oil) through the heat sink, as has been suggested. Joe Gwinn ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman

Re: [time-nuts] 60Hz mains clocking in computers

2009-12-13 Thread Joe Gwinn
not drift across the screen. Joe Gwinn ___ 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.

Re: [time-nuts] 60Hz mains clocking in computers

2009-12-13 Thread Joe Gwinn
Message-ID: 4b251964.5040...@rubidium.dyndns.org Content-Type: text/plain; charset=ISO-8859-1; format=flowed Joe Gwinn wrote: At 1:44 AM + 12/13/09, time-nuts-requ...@febo.com wrote: Date: Sat, 12 Dec 2009 17:29:17 -0800 From: Colby Gutierrez-Kraybill co...@astro.berkeley.edu Subject: [time

[time-nuts] Measuring phase shift between 1 Hz DMTD signals by I+Q processing

2009-07-25 Thread Joe Gwinn
the math to estimate performance compared to the traditional ZCD approach, but the complex multiply and average approach should be quite robust against noise, and is easily implemented in a DSP or FPGA. Joe Gwinn ___ time-nuts mailing list -- time

Re: [time-nuts] Broken Ovenaire OSC 85-50 (Cutting ferrite cores)

2009-07-03 Thread Joe Gwinn
than US $10. Here's one: http://www.dadsrockshop.com/blades.html The traditional approach is to hold the oddly shaped object to be cut in pitch. By lapidary standards, ferrites are pretty soft, and so should cut quite quickly. Joe Gwinn ___ time

[time-nuts] PCI IRIG receiver card for AIX?

2009-05-27 Thread Joe Gwinn
Does anybody know of any PCI cards that will receive IRIG-B time signals and come with an I/O driver for AIX (IBM's flavor of UNIX)? Industrial-grade commercial products are preferred. Thanks, Joe Gwinn ___ time-nuts mailing list -- time-nuts

Re: [time-nuts] Standards sought for immunity of shielded cable links to power-frequency ground loops

2009-01-10 Thread Joe Gwinn
Magnus, At 10:31 AM + 1/10/09, time-nuts-requ...@febo.com wrote: Message: 5 Date: Sat, 10 Jan 2009 11:06:39 +0100 From: Magnus Danielson mag...@rubidium.dyndns.org Subject: Re: [time-nuts] Standards sought for immunity of shielded cable links to power-frequency ground loops To:

Re: [time-nuts] Standards sought for immunity of shielded cable links to power-frequency ground loops

2009-01-10 Thread Joe Gwinn
Magnus, At 6:02 PM + 1/10/09, time-nuts-requ...@febo.com wrote: Message: 4 Date: Sat, 10 Jan 2009 19:02:09 +0100 From: Magnus Danielson mag...@rubidium.dyndns.org Subject: Re: [time-nuts] Standards sought for immunity of shielded cable links to power-frequency ground loops To:

Re: [time-nuts] Standards sought for immunity of shielded cable links to power-frequency ground loops

2009-01-06 Thread Joe Gwinn
At 4:59 AM + 1/7/09, time-nuts-requ...@febo.com wrote: Message: 6 Date: Tue, 06 Jan 2009 21:54:41 -0600 From: Brian Kirby kirb...@bellsouth.net Subject: Re: [time-nuts] Standards sought for immunity of shielded cable links to power-frequency ground loops To: Discussion of precise time

Re: [time-nuts] Leap seconds and POSIX

2009-01-02 Thread Joe Gwinn
Steve, At 8:39 AM + 1/2/09, time-nuts-requ...@febo.com wrote: Message: 6 Date: Fri, 2 Jan 2009 14:00:56 +1300 From: Steve Rooke sar10...@gmail.com Subject: Re: [time-nuts] Leap seconds and POSIX To: Discussion of precise time and frequency measurement time-nuts@febo.com 2009/1/2 Joe

Re: [time-nuts] Leap seconds and POSIX

2009-01-02 Thread Joe Gwinn
Message-ID: 495dd1ef.7030...@rubidium.dyndns.org Content-Type: text/plain; charset=ISO-8859-1; format=flowed Joe Gwinn skrev: Having worked in the POSIX committee for many years, I can shed some light on how POSIX handles leap seconds: In short, POSIX adamantly ignores leap seconds. All

Re: [time-nuts] Leap seconds and POSIX

2009-01-02 Thread Joe Gwinn
Magnus, At 12:00 PM + 1/2/09, time-nuts-requ...@febo.com wrote: Message: 1 Date: Fri, 02 Jan 2009 09:45:23 +0100 From: Magnus Danielson mag...@rubidium.dyndns.org Subject: Re: [time-nuts] Leap seconds and POSIX To: Discussion of precise time and frequency measurement time-nuts@febo.com

[time-nuts] Leap seconds and POSIX

2009-01-01 Thread Joe Gwinn
Having worked in the POSIX committee for many years, I can shed some light on how POSIX handles leap seconds: In short, POSIX adamantly ignores leap seconds. All days in POSIX have the same length, 86,400 seconds. This omission is not by accident, instead having been violently debated at

Re: [time-nuts] Leap seconds and POSIX

2009-01-01 Thread Joe Gwinn
@bsdimp.com Content-Type: Text/Plain; charset=us-ascii In message: p06240822c582a02c4...@[192.168.1.212] Joe Gwinn joegw...@comcast.net writes: : Having worked in the POSIX committee for many years, I can shed some : light on how POSIX handles leap seconds: : : In short, POSIX adamantly

Re: [time-nuts] Sub Pico Second Phase logger

2008-12-27 Thread Joe Gwinn
Pete, At 4:58 AM + 12/27/08, time-nuts-requ...@febo.com wrote: Message: 2 Date: Fri, 26 Dec 2008 19:10:47 -0700 From: Pete peteraw...@earthlink.net Subject: Re: [time-nuts] Sub Pico Second Phase logger To: Discussion of precise time and frequency measurement time-nuts@febo.com Joe,

Re: [time-nuts] Sub Pico Second Phase logger

2008-12-26 Thread Joe Gwinn
Bruce, At 10:16 PM + 12/23/08, time-nuts-requ...@febo.com wrote: Message: 1 Date: Wed, 24 Dec 2008 08:47:21 +1300 From: Bruce Griffiths bruce.griffi...@xtra.co.nz Subject: Re: [time-nuts] Sub Pico Second Phase logger To: Discussion of precise time and frequency measurement

Re: [time-nuts] Sub Pico Second Phase logger

2008-12-24 Thread Joe Gwinn
At 5:05 PM + 12/23/08, time-nuts-requ...@febo.com wrote: Date: Tue, 23 Dec 2008 16:10:29 + From: Mark Sims hol...@hotmail.com Subject: [time-nuts] Sub Pico Second Phase logger To: time-nuts@febo.com Message-ID: blu125-w29c8667e5fae2a1ee11f5bce...@phx.gbl Content-Type: text/plain;

Re: [time-nuts] New topics (was Re: He is a Time-Nut Troublemaker....)

2008-12-24 Thread Joe Gwinn
At 5:05 PM + 12/23/08, time-nuts-requ...@febo.com wrote: Date: Tue, 23 Dec 2008 11:40:51 -0500 From: John Ackermann N8UR j...@febo.com Subject: [time-nuts] New topics (was Re: He is a Time-Nut Troublemaker) To: Discussion of precise time and frequency measurement

Re: [time-nuts] Sub Pico Second Phase logger

2008-12-23 Thread Joe Gwinn
Bruce, At 11:43 PM + 12/22/08, time-nuts-requ...@febo.com wrote: Date: Tue, 23 Dec 2008 12:01:40 +1300 From: Bruce Griffiths bruce.griffi...@xtra.co.nz Subject: Re: [time-nuts] Sub Pico Second Phase logger To: Discussion of precise time and frequency measurement time-nuts@febo.com

Re: [time-nuts] Sub Pico Second Phase logger

2008-12-22 Thread Joe Gwinn
Ulrich, At 7:57 AM + 12/22/08, time-nuts-requ...@febo.com wrote: Message: 7 Date: Mon, 22 Dec 2008 08:56:55 +0100 From: Ulrich Bangert df...@ulrich-bangert.de Subject: Re: [time-nuts] Sub Pico Second Phase logger To: 'Discussion of precise time and frequency measurement'

Re: [time-nuts] Sub Pico Second Phase logger

2008-12-22 Thread Joe Gwinn
Joe Joe Gwinn wrote: Bruce, [snip] Some claim to be able to sync to an SPDIF input but the resultant jitter may be large. Why large jitter? Bad implementation? I'm just suspicious, although I did see some data somewhere that seemed

Re: [time-nuts] Sub Pico Second Phase logger

2008-12-22 Thread Joe Gwinn
Joe Gwinn wrote: At 2:01 AM + 12/22/08, time-nuts-requ...@febo.com wrote: Message: 4 Date: Mon, 22 Dec 2008 11:19:06 +1300 From: Bruce Griffiths bruce.griffi...@xtra.co.nz Subject: Re: [time-nuts] Sub Pico Second Phase logger To: Discussion of precise time and frequency

Re: [time-nuts] Sub Pico Second Phase logger

2008-12-21 Thread Joe Gwinn
@febo.com Joe Joe Gwinn wrote: Bruce, At 3:54 AM + 12/19/08, time-nuts-requ...@febo.com wrote: Message: 5 Date: Fri, 19 Dec 2008 16:51:55 +1300 From: Bruce Griffiths bruce.griffi...@xtra.co.nz Subject: Re: [time-nuts] Sub Pico Second Phase logger To: Discussion of precise time

Re: [time-nuts] Sub Pico Second Phase logger

2008-12-19 Thread Joe Gwinn
@febo.com Joe Joe Gwinn wrote: At 11:48 PM + 12/18/08, time-nuts-requ...@febo.com wrote: Message: 5 Date: Fri, 19 Dec 2008 12:48:27 +1300 From: Bruce Griffiths bruce.griffi...@xtra.co.nz Subject: Re: [time-nuts] Sub Pico Second Phase logger To: Discussion of precise time

Re: [time-nuts] Sub Pico Second Phase logger

2008-12-19 Thread Joe Gwinn
@febo.com Joe Joe Gwinn wrote: This is from home. I'll not be at work until next year. At 11:48 PM + 12/18/08, time-nuts-requ...@febo.com wrote: Message: 4 Date: Fri, 19 Dec 2008 12:17:33 +1300 From: Bruce Griffiths bruce.griffi...@xtra.co.nz Subject: Re: [time-nuts] Sub Pico

Re: [time-nuts] Sub Pico Second Phase logger

2008-12-18 Thread Joe Gwinn
This is from home. I'll not be at work until next year. At 11:48 PM + 12/18/08, time-nuts-requ...@febo.com wrote: Message: 4 Date: Fri, 19 Dec 2008 12:17:33 +1300 From: Bruce Griffiths bruce.griffi...@xtra.co.nz Subject: Re: [time-nuts] Sub Pico Second Phase logger To: Discussion of precise

Re: [time-nuts] Sub Pico Second Phase logger

2008-12-18 Thread Joe Gwinn
At 11:48 PM + 12/18/08, time-nuts-requ...@febo.com wrote: Message: 5 Date: Fri, 19 Dec 2008 12:48:27 +1300 From: Bruce Griffiths bruce.griffi...@xtra.co.nz Subject: Re: [time-nuts] Sub Pico Second Phase logger To: Discussion of precise time and frequency measurement time-nuts@febo.com