Re: [time-nuts] potential source for cheap copy of labview

2015-06-20 Thread brent evers
Interesting in your take on it if you check it out. Please report back your findings. Brent On Fri, Jun 19, 2015 at 1:40 PM, Eric Garner garn...@gmail.com wrote: National Instruments (and may other vendors of software) has apparently cottoned on to the fact that if they don't start catering

Re: [time-nuts] [volt-nuts] The Art of Electronics

2015-04-17 Thread brent evers
+1. I'll probably buy a copy anyway (not that I need it so much anymore), but I'd like to know what has changed, what you think has improved, what you think has been missed, etc. The 2nd edition was fantastic, but so much of the EE world has changed I think it would be hard to cover it as well

Re: [time-nuts] [volt-nuts] The Art of Electronics

2015-04-17 Thread brent evers
my previous post were answered. Brent On Fri, Apr 17, 2015 at 7:46 AM, brent evers brent.ev...@gmail.com wrote: +1. I'll probably buy a copy anyway (not that I need it so much anymore), but I'd like to know what has changed, what you think has improved, what you think has been missed, etc

Re: [time-nuts] CSAC change in temperature, max is now 40C

2015-02-09 Thread brent evers
My understanding is that 1000's of these are deployed on commercial ocean bottom seismographs (Co. name not important) and per my last conversation with them, that they had identified long term failure's on the CSAC. They also indicated that they could detect when failure was imminent, and that

Re: [time-nuts] 'CPLDs for clock dividers' Thread

2014-01-06 Thread brent evers
Precious little to add to this, just to confirm that back in another life at Watkins Johnson (early 90's), we used CPLD's for low phase noise dividers all the time. My work at the time was focused on everything but the divider. Brent On Mon, Jan 6, 2014 at 7:27 AM, Bob Camp li...@rtty.us

Re: [time-nuts] 'CPLDs for clock dividers' Thread

2014-01-06 Thread brent evers
Wow - Now you're really taxing my memory. Radios tuned from 2Mhz to 2Ghz. LO was high side mix and I think ran from roughly 3-5Ghz, comprised of 4 switched VCO's. I think the IF was always 70Mhz. I'd have to revisit quite a bit to come up with more info than that. Sorry I can't remember more

Re: [time-nuts] GPS-18, Windows, NTP Lat Lon

2013-09-03 Thread brent evers
Wouldn't turning off ntp drive it nuts? At the risk of throwing out the bone head answer and assuming this isn't going on your next space craft, you could just split the GPS serial (my quick google showed the 18 to be the serial unit vs usb) signal and run a copy to another comm port.. Yeah -

Re: [time-nuts] GPS 18 behavior

2013-07-22 Thread brent evers
Of course all this from the guy who once tried to use seismic sensors and GPSDO to triangulate moles in his backyard... I don't recall seeing that on leapsecond.com... Sounds like something that could become an obsession that rivaled clocks in cost. I'm picturing Bill Murray and a

Re: [time-nuts] Glonass Payload lost... (Rob Kimberley)

2013-07-02 Thread brent evers
No kidding. Talk about embarrassing. I guess in the good old days, that project manager would be packing his teacup to go spilt rocks in siberia for the rest of his life, if he got off that lucky. Brent On Tue, Jul 2, 2013 at 12:03 PM, Dan Kemppainen d...@irtelemetrics.comwrote: Note to

Re: [time-nuts] Connectors

2013-04-13 Thread brent evers
of things. On Fri, Apr 12, 2013 at 12:01 PM, brent evers brent.ev...@gmail.com wrote: BTW - 3M Scotch rubber tape is regularly used in the offshore industry to make waterproof connections to 6000m/10,000psi. I use it on any/all outdoor signal (RF/Microwve antenna connectors, amphenol

Re: [time-nuts] Connectors

2013-04-12 Thread brent evers
BTW - 3M Scotch rubber tape is regularly used in the offshore industry to make waterproof connections to 6000m/10,000psi. I use it on any/all outdoor signal (RF/Microwve antenna connectors, amphenol, etc) connectors as well. I cover the rubber tape with a layer of electrical tape (Super 88), and

Re: [time-nuts] A Day in the Life of Five PPS Sources..

2012-12-20 Thread brent evers
Any idea of what drove the larger drift between the Tbolts and the PRS10 at 1:26 through1:29? Be interesting (to me at least) too see the same post survey. Neat idea. Brent On Thu, Dec 20, 2012 at 1:43 AM, David Martin drmar...@ivietechnologies.com wrote: The video permissions should be fixed

Re: [time-nuts] A Day in the Life of Five PPS Sources..

2012-12-20 Thread brent evers
The PRS-10 (yellow). Thus the others move relative to it. Brent On Thu, Dec 20, 2012 at 9:41 AM, Chuck Harris cfhar...@erols.com wrote: Let's see, I understand what the traces are, but what is driving the trigger? -Chuck Harris brent evers wrote: Any idea of what drove the larger drift

Re: [time-nuts] A Day in the Life of Five PPS Sources..

2012-12-20 Thread brent evers
You're right though - a closer look and the yellow trace does change level - the two PRS-10s must track each other quite well? Brent On Thu, Dec 20, 2012 at 10:28 AM, Chuck Harris cfhar...@erols.com wrote: Ok, so there are two PRS10's in the mix. That makes sense. Thanks! -Chuck Harris

Re: [time-nuts] Interesting crossover between time-nuttery and caving

2012-11-12 Thread brent evers
Fascinating application - thanks for posting. Always neat to see when the obscure (atomic clocks, relativity) begin to have direct, applicable relevance (geoid measurement). Brent On Mon, Nov 12, 2012 at 7:03 PM, Joseph Gray jg...@zianet.com wrote: It's interesting to see what new uses old

Re: [time-nuts] Simple NTP server based on a Raspberry Pi

2012-10-29 Thread brent evers
Cool stuff David! A project for the (long) list... Brent On Mon, Oct 29, 2012 at 3:19 PM, David J Taylor david-tay...@blueyonder.co.uk wrote: I've spent the last few days getting a very simple, low-power NTP server working on a Raspberry Pi. I've discovered far more about Linux than I feel

Re: [time-nuts] There are a couple CSACs for sale

2012-10-05 Thread brent evers
Hmmm - was just poking through leapsecond.com's /pages section. Noticed a folder 'csac' dated Oct 3, 2012. Guessing there will be some plots/test results in a little bit?? Early xmas? Brent On Thu, Oct 4, 2012 at 12:21 PM, Azelio Boriani azelio.bori...@screen.it wrote: Just sold. It was not

Re: [time-nuts] Counters for ADEV measurements

2012-10-02 Thread brent evers
I'm also interested in this. I've got one of these and a 53131A and am still learning the ins and outs of ADEV measurements with timelab. I was not aware of the 5/10MHz shortcomings of the 53131A that were discussed this weekend.. Brent On Tue, Oct 2, 2012 at 8:11 AM, Geoff Blake

Re: [time-nuts] Why the fuss?

2012-09-27 Thread brent evers
Zoning, Legal? Where? Brent On Thu, Sep 27, 2012 at 10:41 AM, J. Forster j...@quikus.com wrote: Because: LORAN-C is gone. Not all can use GPS because of siting, horizon, zoning, legal, and other issues. Not everyone can erect antenna towers. There is nothing else, except perhaps WWV or

Re: [time-nuts] Lady Heather on a Laptop

2012-09-27 Thread brent evers
If you get one with three sata ports (more than two usually comes with four though), plug in three drives - one for the OS and applications, and two data configured to run as a mirrored raid array - makes a cheap and easy file server.. I haven't done this but plan to (maybe I'll do that this

Re: [time-nuts] So, how did you spend your leapsecond?

2012-07-01 Thread brent evers
Sweating without power, trying to keep a 1942 generator running enough to keep the fridge running (required a mid day magneto tear down)... In between dips in a kiddie pool and 'saving' beers from getting too hot of course.. Brent ___ time-nuts

Re: [time-nuts] Missing parts of threads

2012-04-18 Thread brent evers
I've suspected this but never really looked into it. I thought it was just a break in the thread, but the subject didn't concern me enough to really flush it out. I'll look more closely next time it appears to happen. That said, I have not had a spam filter pick up any time nuts posts. Brent

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

2012-02-22 Thread brent evers
Why would this (60ns error, and connector issue) have not shown up in the time transfers and validations done by the labs cited? Brent On Wed, Feb 22, 2012 at 11:03 PM, Jim Lux jim...@earthlink.net wrote: On 2/22/12 2:26 PM, Poul-Henning Kamp wrote: In

Re: [time-nuts] Lady Heather for a noob

2012-01-12 Thread brent evers
To original poster - go to bed, let it sit and see what you have tomorrow. Chances are it will be locked on 8 birds and settled down. I found the KE5FX remote link very useful as a reference system in learning about LH. I think I hosed up that machine pretty good in the learning process too

Re: [time-nuts] You can build a fountain from the things you find at home...

2011-09-27 Thread brent evers
Well, this is supposed to be a list about amateur precision timekeeping, so at the risk of looking like a total idiot, I'll take the bait and throw out a few questions. First - I've only been on this list for about 6 months, and am only just beginning to get my head around some of the concepts

Re: [time-nuts] Info on Hamilton Railroad watch?

2011-07-28 Thread brent evers
Any Hamilton is special in my book. Brent On Thu, Jul 28, 2011 at 10:15 AM, John Green wpxs...@gmail.com wrote: I know there are those who have a lot of knowledge about pocket watches and railroad watches so, I know someone with a 992B Hamilton Railroad Special, 21 jewel, lever set, with a

Re: [time-nuts] Discipline an oscillator with NTP?

2011-07-22 Thread brent evers
After that all you need to do is write some code to... Oh - if I had a nickel for every time I've heard that! Brent On Fri, Jul 22, 2011 at 6:07 PM, Bob Camp li...@rtty.us wrote: Hi The easy way is to take a pps off of your external oscillator and feed that into a port on your NTP server.

Re: [time-nuts] MIT RADIATION LABORATORY SERIES 1940-1945 (28 VOLS) on eBay

2011-07-13 Thread brent evers
Wow - that's a nice set. I wonder if its really NOS (new old stock) as advertised - the jacket of one book looks more faded than the others. I picked up a set that is pieced together (some ex-library) a few years ago for $500. People (family) give me crap about it as a waste of money and nerdy,

Re: [time-nuts] time-nuts Digest, Vol 84, Issue 25

2011-07-08 Thread brent evers
I've actually found the separate mechanical and digital displays quite useful. I spent a lot of time on science vessels and would set one to science time (GMT) and the other to what ever timezone we happened to be adhering to for daily operations, which can vary quite a bit when you are working

[time-nuts] Jeff bezos' 10,000 year clock

2011-07-02 Thread brent evers
I don't think I've seen anything come across time nuts on this (at least since I've been a subscriber), if so, I apologize for the repost. http://www.1yearclock.net/learnmore.html http://longnow.org/clock/ Brent ___ time-nuts mailing list --

Re: [time-nuts] Lyttleton Time Ball completly collapsed

2011-06-13 Thread brent evers
Dissapointing - I remember it being pointed out to me as we pulled into port there once. Are there others scattered around the globe? Brent On Mon, Jun 13, 2011 at 6:19 PM, Steve Rooke sar10...@gmail.com wrote: Sadly, the Lyttleton Time Ball completly collapsed in yesterday's, Mon 13th,

Re: [time-nuts] Sidereal timekeeping

2011-05-16 Thread brent evers
Can't you just use a programmable crystal? Digikey will do this for you prior to ship. Search on crystal, then under the field type, filter by Programmed by Digikey. Four types pop up as in stock. Not sure if they would meet you footprint requirement, but its worth a shot. Brent On Mon, May

Re: [time-nuts] basic question on GPS satellites

2011-05-16 Thread brent evers
Do you have a mask set on the signal level? I have two tbolts running that are completely surrounded by trees, and I was getting satellites popping in and out. I dropped the AMU to 0.0 and it is much more stable as to not dropping birds, although I have absolutley no idea what effect that might

Re: [time-nuts] Sidereal timekeeping

2011-05-16 Thread brent evers
, brent evers wrote: Can't you just use a programmable crystal?  Digikey will do this for you prior to ship.  Search on crystal, then under the field type, filter by  Programmed by Digikey.  Four types pop up as in stock. Not sure if they would meet you footprint requirement, but its worth

Re: [time-nuts] USB and Mouse conflict persists

2011-05-11 Thread brent evers
I believe you need to disable - not delete - the serial mouse in the device manager, else it just keeps reinstalling. Brent KD4VMM On Wed, May 11, 2011 at 9:42 AM, David J Taylor david-tay...@blueyonder.co.uk wrote: Hello David, The symptoms include: eratic mouse cursor that stabilizes

Re: [time-nuts] Tbolt Temp Sensor

2011-04-24 Thread brent evers
Great info Arthur - exactly what I was looking for. Thanks for the tip on the chip version. My only question - what does one do with 50 TBolts? Hopefully you won't come up with a good enough reason for me to justify buying more!! Many thanks, Brent On Sat, Apr 23, 2011 at 9:29 PM, Arthur

Re: [time-nuts] Housing LPRO and Thunderbolt together

2011-04-23 Thread brent evers
Chis and Charles - Thanks for the links - those were the ones I was looking for... Brent On Fri, Apr 22, 2011 at 9:03 PM, Chris Albertson albertson.ch...@gmail.com wrote: On Fri, Apr 22, 2011 at 5:42 PM, brent evers brent.ev...@gmail.com wrote: ...  If anyone has a decent source for 1U chassis

Re: [time-nuts] Housing LPRO and Thunderbolt together

2011-04-22 Thread brent evers
Somewhat related to this, someone posted a link for 1U chassis a while back. I thought I saved the link, but can't find it, and since the text of posts can't be searched from the archives, can't find mention of it that way either. If anyone has a decent source for 1U chassis that I could mount a

Re: [time-nuts] Proton Precession Magnetometer

2011-04-06 Thread brent evers
I've used and repaired EGG proton maggies in the past. I can't remember a lot from them other than that, as you indicated there wasn't a lot to them. I think its best to figure out what you need, because putting a proton maggie in a box may be physically problematic. If you really think that's

Re: [time-nuts] Proton Precession Magnetometer

2011-04-05 Thread brent evers
Whats the required sensitivity? How much field strength (penetration) are you trying to measure? Brent On Tue, Apr 5, 2011 at 9:26 PM, Neville Michie namic...@gmail.com wrote: Hi, I am boxing up my LPRO rubidium source in a steel box. The device is to be thermostated by controlling a small

Re: [time-nuts] Parts Selection

2011-03-25 Thread brent evers
Hi - New to the list as of last night - much more activity than I expected. As an introduction, my name I Brent, and I work mostly in the subsea world, although prior to that, in the RF/microwave test equipment world. I expected to lurk for a good 6 months before chiming in, but what the heck.