Re: [time-nuts] My Racal-Dana 1992
If the variable capacitor in question has ball bearings, it's probable that the bearing is a bit tight and the races have indented. This gives the effect of a detent. On 2011-12-19 01:17, Ed Palmer wrote: I haven't seen a capacitor with detents. Could the fine adjustment be a multi-turn pot? I've seen detents with those. I looked at mine but couldn't tell. A pot would mean voltage control. Maybe we could build a GPSDC (GPS Disciplined Counter). Yes, I'm kidding. I think. Ed On 12/18/2011 1:21 AM, Charles P. Steinmetz wrote: It turns out that I unfairly maligned the 1992 (and the 9462 oscillator, option 04E) when I accused it of poor oscillator "settability." I was inspired by the recent discussions to have another crack at mine, and they can, in fact, be set very accurately. One of mine has been reading "000.00 E-3" for about 24 hours now, hooked to a Thunderbolt and using the 10-second gate. The other has been toggling between "999.99 E-3" and "000.00 E-3." (This is how mine are used --- perpetually reading the shop standards to give an independent reality check on their condition.) Walking the oscillators to 0 is tedious and time-consuming, but not difficult. I think I must not have been sufficiently patient in the past. The fine adjustment has detents -- if you adjust it slowly, you can count the clicks. On both of mine, each click adjusts the oscillator frequency about 3 mHz (CW lowers the oscillator frequency/raises the displayed frequency). Interestingly, when you are close to zero and adjusting the oscillator only a few clicks at a time, it takes off in the opposite direction and peaks at a MUCH greater offset than the eventual increment, then returns and overshoots in the direction of the adjustment (again, quite a bit further than the eventual increment), and finally settles to its new value, with another cycle or two of smaller +/- overshoots around the final value. It takes at least 1/2 hour to settle within a count or two of the eventual final value, and several hours before you can be confident that it has settled to its new value. Best regards, Charles -- Cheers, Ken vk7...@users.tasmanet.com.au www.vk7krj.com 'It seems hard to sneak a look at God's cards. But that He plays dice and uses "telepathic" methods is something that I cannot believe for a single moment.' (Einstein's famous quote on Quantum theory) --- avast! Antivirus: Outbound message clean. Virus Database (VPS): 111218-1, 2011-12-19 Tested on: 2011-12-19 10:59:57 avast! - copyright (c) 1988-2011 AVAST Software. http://www.avast.com ___ 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] From Sundials to Atomic Clocks
Many thanks Randall, that downloaded first go. I guess nist must be blocking some ip's for whatever reason. And thanks to everyone else who replied also, your suggestions were appreciated. On 2011-09-09 08:32, Randall Prentice wrote: Have uploaded a copy in NZ. http://prento.homelinux.net/1796.pdf Couldn't download off TelstraClear, had to use Actrix links (DNS didn't resolve properly). Regards Randall ZL2RJP -- Cheers, Ken vk7...@users.tasmanet.com.au www.vk7krj.com 'It seems hard to sneak a look at God's cards. But that He plays dice and uses "telepathic" methods is something that I cannot believe for a single moment.' (Einstein's famous quote on Quantum theory) --- avast! Antivirus: Outbound message clean. Virus Database (VPS): 110908-2, 2011-09-09 Tested on: 2011-09-09 16:58:44 avast! - copyright (c) 1988-2011 AVAST Software. http://www.avast.com ___ 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] From Sundials to Atomic Clocks
Is anyone else having trouble with this url? I've been trying it since the email came through, it just times out waiting for a reply. I did try to get to it from the parent site, with the same effect. No problem with the nist site direct, but no go with tf.nist I have no trouble with .pdf's from anywhere else, but I can't find the file anywhere else. On 2011-09-08 03:27, Mike Fahmie wrote: On a visit to NIST Boulder (then known as NBS) many years ago (1978), I was presented with a copy of NBS Monograph 155, "From Sundials to Atomic Clocks" by one of the authors. I found it to be a fantastic read, it answers all of those questions about Time & Frequency that you were afraid to ask. I stumbled on it again today in PDF form on the NIST website, it has undergone two revisions and this URL points to the most current (1999) edition. http://tf.nist.gov/general/pdf/1796.pdf -Mike- WA6ZTY ___ 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. --- avast! Antivirus: Inbound message clean. Virus Database (VPS): 110907-0, 2011-09-07 Tested on: 2011-09-08 10:12:15 avast! - copyright (c) 1988-2011 AVAST Software. http://www.avast.com -- Cheers, Ken vk7...@users.tasmanet.com.au www.vk7krj.com 'It seems hard to sneak a look at God's cards. But that He plays dice and uses "telepathic" methods is something that I cannot believe for a single moment.' (Einstein's famous quote on Quantum theory) --- avast! Antivirus: Outbound message clean. Virus Database (VPS): 110908-1, 2011-09-08 Tested on: 2011-09-09 07:03:52 avast! - copyright (c) 1988-2011 AVAST Software. http://www.avast.com ___ 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] My Custom GPS clock
A few years ago, I did a similar clock for use in the car, but using a 4 line lcd. I never thought about correcting it for the software delays- an excellent idea Bert, thanks. I guess I am going to have to do a bit of a re-write sometime soon. Thinking about it, I could just feed the 1pps into the pic and use that to trigger the display update but with one second added. If anyone is interested, the clock is here www.vk7krj.com/ham_stuff.htm and if anyone wants the source code (it's in crownhill pic basic) I'm happy to supply it. On 2011-07-23 05:41, Bert, VE2ZAZ wrote: Hello Everyone, I thought some of you might be interested in the following. A few months ago, a few time-nuts discussed what they had done to convert existing equipment to a large GPS clock. I elected to design my own clock display instead. Mine is fed by a Garmin GPS-35 GPS and it uses a 64 x 8 LED array for the display. It is driven by a PIC18F1220 with custom firmware. Cheers, Bert, VE2ZAZ -- Cheers, Ken vk7...@users.tasmanet.com.au www.vk7krj.com 'It seems hard to sneak a look at God's cards. But that He plays dice and uses "telepathic" methods is something that I cannot believe for a single moment.' (Einstein's famous quote on Quantum theory) No virus found in this outgoing message. Checked by AVG - www.avg.com Version: 9.0.901 / Virus Database: 271.1.1/3782 - Release Date: 07/23/11 04:34:00 ___ 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] locate 6 digit digital clock
Aarghh- it's too early in the morning for thinking- here is the url!! http://www.vk7krj.com/ham_stuff.html On 2011-06-12 06:55, Ken , VK7KRJ wrote: It's not up to time-nuts standard, but here is my gps clock I built some years ago. It uses a Motorola Oncore board for the gps and I didn't bother with trying to compensate for the delay my software causes. I did put in a routine to allow for daylight saving (curious concept- a bit like cutting your head off and standing on it to make yourself taller!) but the politicians keep messing with the dates, so it is an hour out for a while twice a year. Next (electronics) project is the same thing, but with my newly acquired thunderbolt. On 2011-06-12 03:25, Jason Rabel wrote: Since people are showing off their clocks... I managed to get a Datum / Bancomm bc632D display from eBay a while back and it's pretty cool. -- Cheers, Ken vk7...@users.tasmanet.com.au www.vk7krj.com 'It seems hard to sneak a look at God's cards. But that He plays dice and uses "telepathic" methods is something that I cannot believe for a single moment.' (Einstein's famous quote on Quantum theory) No virus found in this outgoing message. Checked by AVG - www.avg.com Version: 9.0.901 / Virus Database: 271.1.1/3695 - Release Date: 06/11/11 19:06:00 ___ 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] locate 6 digit digital clock
It's not up to time-nuts standard, but here is my gps clock I built some years ago. It uses a Motorola Oncore board for the gps and I didn't bother with trying to compensate for the delay my software causes. I did put in a routine to allow for daylight saving (curious concept- a bit like cutting your head off and standing on it to make yourself taller!) but the politicians keep messing with the dates, so it is an hour out for a while twice a year. Next (electronics) project is the same thing, but with my newly acquired thunderbolt. On 2011-06-12 03:25, Jason Rabel wrote: Since people are showing off their clocks... I managed to get a Datum / Bancomm bc632D display from eBay a while back and it's pretty cool. -- Cheers, Ken vk7...@users.tasmanet.com.au www.vk7krj.com 'It seems hard to sneak a look at God's cards. But that He plays dice and uses "telepathic" methods is something that I cannot believe for a single moment.' (Einstein's famous quote on Quantum theory) No virus found in this outgoing message. Checked by AVG - www.avg.com Version: 9.0.901 / Virus Database: 271.1.1/3695 - Release Date: 06/11/11 19:06:00 ___ 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] Top Posting Clarified - Hopefully
Thanks for the tip Justin- I also found one for Thunderbird called "QuoteCollapse"- now I get to read just the new bits. On 2011-05-26 03:52, Justin Pinnix wrote: You guys should get out of the dark ages and use a modern mail client. Then it won't matter! I won't name names, but the one I use is popular, has a web front end, keeps all of my mail around in a searchable format (no need to waste your time generating a word doc), squashes out quoted fragments of the previous messages (puts them behind a -Show Quoted Text- link), and rhymes with "female". It took me a while to figure out what you guys were even complaining about :-) -- Cheers, Ken vk7...@users.tasmanet.com.au www.vk7krj.com 'It seems hard to sneak a look at God's cards. But that He plays dice and uses "telepathic" methods is something that I cannot believe for a single moment.' (Einstein's famous quote on Quantum theory) No virus found in this outgoing message. Checked by AVG - www.avg.com Version: 9.0.901 / Virus Database: 271.1.1/3660 - Release Date: 05/26/11 04:09:00 ___ 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] Top Posting Clarified - Hopefully
Why is this "extra repetition" a problem when top-posting, but not a problem when bottom posting On 2011-05-25 12:23, Perry Sandeen wrote: Exalted Listers, Because of the high amount of useable technical information to me I copy each month’s postings to a word file. I do this for two reasons. First is that sub-dividing posts into different subject files is just too complicated. Secondly net archived information relies on the goodwill of the provide r(s) and is not guaranteed to be there when one might want/need it. I usually end up with over 200 pages of condensed information. My top posting complaint is not because of one earlier post at the bottom. That is reference information. Typically, in the past, it was not uncommon to see top posting of five or six previous posts. This would then fill up four or five pages. There might be two or three such top postings for each issue. Deleting all of this extra repetition becomes a mighty PITA for someone like me who is still a neophyte in this area of expertise and attempting to become better educated. I thoroughly enjoy the sometimes mislabeled as OT adventures (and the occasional mis-adventures). They provide both knowledgeable insight and a deep appreciation of previous attempts toward technical excellence. I’m very appreciative of the more pruned issues of late. Regards, Perrier ___ 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. -- Cheers, Ken vk7...@users.tasmanet.com.au www.vk7krj.com 'It seems hard to sneak a look at God's cards. But that He plays dice and uses "telepathic" methods is something that I cannot believe for a single moment.' (Einstein's famous quote on Quantum theory) No virus found in this outgoing message. Checked by AVG - www.avg.com Version: 9.0.901 / Virus Database: 271.1.1/3658 - Release Date: 05/25/11 04:34:00 ___ 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] Efratom FRS manual PDF available
I can put it on my site if you like Bob. On 2011-05-19 13:46, k6...@comcast.net wrote: One of the posters to the sci.electronics.design newsgroup (remember newsgroups?) posted a PDF scan of the Efratom FRS manual, including schematics. 3mb, if there is interest in it, someone point me to a place to upload it. bob k6rtm -- Cheers, Ken vk7...@users.tasmanet.com.au www.vk7krj.com 'It seems hard to sneak a look at God's cards. But that He plays dice and uses "telepathic" methods is something that I cannot believe for a single moment.' (Einstein's famous quote on Quantum theory) No virus found in this outgoing message. Checked by AVG - www.avg.com Version: 9.0.901 / Virus Database: 271.1.1/3646 - Release Date: 05/19/11 04:34:00 ___ 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] GPS position averaging software?
John, I use WinOncore12, it's written by motorola, but no longer supported by them. You can get the install file from here http://www.jackson-labs.com/support.html On 2011-04-13 11:44, John Ackermann N8UR wrote: Just got a pair of GPS antennas on the roof and I'm interested in both getting as accurate a position survey as I can, and in comparing the performance of the two antennas -- one is a choke ring, the other a Motorola Timing2000. I'm using an M12+ receiver. I have TAC32 but am interested in other software that may have more focus on positioning, e.g. showing a plot of the wander and providing statistics about the averaging. Any suggestions? John -- Cheers, Ken vk7...@users.tasmanet.com.au www.vk7krj.com 'It seems hard to sneak a look at God's cards. But that He plays dice and uses "telepathic" methods is something that I cannot believe for a single moment.' (Einstein's famous quote on Quantum theory) No virus found in this outgoing message. Checked by AVG - www.avg.com Version: 9.0.894 / Virus Database: 271.1.1/3569 - Release Date: 04/13/11 04:35:00 ___ 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] Datum Handbook of Time Code Formats
Bill & all, I have put a copy of Handbook_of_Time_Code_Formats.pdf on my web site, url is www.vk7krj.com/ham_stuff.htm There is a hyperlink at the bottom of the page. Enjoy. On 2011-03-12 15:02, Bill Hawkins wrote: Wizard, they want my name and email address. That can be sold to anybody to use on their mailing list of pushy offers. They offer a service that I do not want. James, I do not see a slow download button or the file name. I assume I have to give them name and email before I see anything that I can use. I am still using IE6 and ignoring people who want me to upgrade to the new, advertiser-friendly IE8. The web was always supposed to be backward compatible, but the prices paid for user information are changing that. If that's what I'm up against, then I'll live without it. Not that my buying "habits" would do them any good, as I run away from ads with dancing baloney (blinking, repeating, or adverdramas). I'd like to hear from anyone who has made it available as a plain old document for download. Bill Hawkins -Original Message- From: James Fournier Sent: Friday, March 11, 2011 9:09 PM You don't need to, click the slow download button at wait about 40 sec. On Fri, Mar 11, 2011 at 10:02 PM, Bill Hawkins wrote: Well, Wizard, I'd love to read it, but I don't hand out personal details to unknown web sites. Bill Hawkins -Original Message- From: gandal...@aol.com Sent: Friday, March 11, 2011 8:38 PM I guess the title might just about say it all:-) This is another generous donation from Rob Kimberley who has made available a copy of the 1987 seventh printing of the Datum Inc. Handbook of Time Code Formats. The handbook includes descriptions and signal details of IRIG, NASA, and other time code formats as well as information on the WWV, WWVH, and WWVB, US Standard Time Broadcasts. It's a great source of information and available now from.. _http://rapidshare.com/files/452123988/Handbook_of_Time_Code_Formats.pdf_ (http://rapidshare.com/files/452123988/Handbook_of_Time_Code_Formats.pdf) As always, please feel free to distribute/upload this in as many directions as possible. regards Nigel GM8PZR ___ 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. -- Cheers, Ken vk7...@users.tasmanet.com.au www.vk7krj.com 'It seems hard to sneak a look at God's cards. But that He plays dice and uses "telepathic" methods is something that I cannot believe for a single moment.' (Einstein's famous quote on Quantum theory) No virus found in this outgoing message. Checked by AVG - www.avg.com Version: 9.0.872 / Virus Database: 271.1.1/3501 - Release Date: 03/12/11 06:56:00 ___ 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] Thunderbolt Supply
Greetings and my first post from a down-under lurker. A reasonably simple way of producing a clean supply would be the "finesse" regulator here http://www.wenzel.com/documents/finesse.html I'm not sure how well would clean up the spikey stuff from a switcher though. -- Cheers, Ken vk7...@users.tasmanet.com.au www.vk7krj.com 'It seems hard to sneak a look at God's cards. But that He plays dice and uses "telepathic" methods is something that I cannot believe for a single moment.' (Einstein's famous quote on Quantum theory) No virus found in this outgoing message. Checked by AVG - www.avg.com Version: 9.0.872 / Virus Database: 271.1.1/3443 - Release Date: 02/14/11 18:34:00 ___ 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.
