[time-nuts] Check out my photos on Facebook
Hi Time-nuts, I set up a Facebook profile where I can post my pictures, videos and events and I want to add you as a friend so you can see it. First, you need to join Facebook! Once you join, you can also create your own profile. Thanks, Stanley To sign up for Facebook, follow the link below: http://www.facebook.com/p.php?i=10278749666k=Z6E3Y5U34YZNYDBJPA2TSWR2QRIB4TYLSVDSCr Already have an account? Add this email address to your account: http://www.facebook.com/n/?merge_accounts.phpe=time-nuts%40febo.comc=613df3677a9c591f348d68270b7784cd === time-nuts@febo.com was invited to join Facebook by Stanley Reynolds. If you don't want to receive these emails from Facebook in the future, please follow the link below to unsubscribe. http://www.facebook.com/o.php?k=74ab50u=1348233827mid=3b6b518G505c6a63G0G8 Learn more about this email: http://www.facebook.com/help/?faq=17151\nFacebook, Inc. P.O. Box 10005, Palo Alto, CA 94303 ___ 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] Lightsquared and a little math
Wonder if the clients of this network reduce power as cell phones do to increase battery life and reduce interference or they will use a dish on the fixed clients, not that would help with interference from the sat. The web site reads like the sat will distribute the internet signal direct to the clients: http://www.lightsquared.com/what-we-do/technology/ Stanley - Original Message From: Chris Albertson albertson.ch...@gmail.com To: Discussion of precise time and frequency measurement time-nuts@febo.com Sent: Wed, February 2, 2011 12:09:07 PM Subject: Re: [time-nuts] Lightsquared and a little math Let's see, a 13 mile circle is pi r squared = ~ 530 square miles. 40,000 times 530 is ~ 21 million square miles. Wikipedia tells me that the area of the US is 3.79 million square miles. By the same logic, all of the office space in New York could not fit in New York. But it does because they stack it 20 or 100 floors one on top of the other. I suspect the areas will overlap with very dense coverage in urban areas. Perhaps in some places there is 50 or 100 channels of coverage and in others one or even zero. -- = Chris Albertson Redondo Beach, California ___ 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. ___ 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] counter
Yes, boards and parts, please email me off list. Stanley snip Speaking of PICTIC II's. Great project, but I had originally decided not to go that route as list members were indicating that 5370Bs were to be picked up for 200 bucks. Not so in France I am afraid. I have not been able to find anything under 5 times that over here. Does anyone know if any boards are still available? I checked the mouser project and most parts seems available as I type. Only a serial driver unavailable, but I have plenty of those. Are any other parts needed that are not on that project list? thx. Mike ___ 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. ___ 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 tests by the DoD
Looks like a upside down wedding cake a very familiar shape for pilots, ground receivers may not be effected if beyond the horizon of the testing device if it is at sea level. Yes this is just a guess on my part. Stanley - Original Message From: Robert Darlington rdarling...@gmail.com To: Discussion of precise time and frequency measurement time-nuts@febo.com Sent: Thu, January 20, 2011 7:00:31 PM Subject: [time-nuts] GPS tests by the DoD Did you guys see this one yet? http://www.engadget.com/2011/01/20/faa-warns-of-ongoing-gps-issues-in-southeastern-us-due-to-defens/ ___ 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. ___ 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] HP 54100 scope eproms images to Diddiers site Ko4bb
Don't guess it would help if I open my HP 54501A and backup the eproms ? Stanley - Original Message From: paul swed paulsw...@gmail.com To: Time-nuts time-nuts@febo.com Sent: Sun, December 26, 2010 4:24:45 PM Subject: [time-nuts] HP 54100 scope eproms images to Diddiers site Ko4bb Though I have a bad eprom and its unclear which one. I have uploaded the eprom images to Diddiers site. Much of the 54100 still works just need to stay clear of some functions that lock the scope up. Not perfect but better then nothing. Also have to say the HP service manuals not great. Change the eproms till it works. There you go. It would be nice if the trouble code gave you a clue as to which of the 12 eproms it is. Can still compare timebases with the scope. Regards Paul WB8TSL ___ 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. ___ 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] Truetime DC468 GOES simulator in Diddiers upload folder for posting only 485 KB actually
Try: www.n4iqt.com/DC468simul Stanley - Original Message From: jim s j...@jwsss.com To: Discussion of precise time and frequency measurement time-nuts@febo.com Sent: Thu, December 23, 2010 8:53:56 PM Subject: Re: [time-nuts] Truetime DC468 GOES simulator in Diddiers upload folder for posting only 485 KB actually curious where it is posted. you can email what you have to me Paul if that is easier. thanks JIm On 12/23/2010 3:28 PM, paul swed wrote: Converted word to pdf and zipped crunched it to 485 KB. Pretty good. Enjoy. Paul WB8TSL ___ 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. ___ 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. ___ 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] Help!! Trimble T-Bolt serial port interface problem...
Windows XP – solutions http://www.bmw-world.ro/?p=173 Windows 7 http://www.windowsitpro.com/article/product-review/how-do-i-disable-mouse-detection-on-a-com-port-for-ups-usage-.aspx Stanley - Original Message From: Michael Baker mp...@clanbaker.org To: time-nuts@febo.com Sent: Mon, December 20, 2010 12:32:50 PM Subject: [time-nuts] Help!! Trimble T-Bolt serial port interface problem... Hello, Time Nutters-- I just installed Lady Heather on my Dell D-610 laptop. When I booted it up with the T-bolt plugged into the serial port on the laptop, it screwed up the pointer and touch-pad. The pointer functions erratically and is generally uncontrollable. As I recall, this is a common problem when plugging T-bolts into serial ports. I know that there is a procedure to cure this problem-- but I forgot what it is. Sometimes I think I am getting senile and getting forgetful... The laptop has Windows-7 Eternity OS on it but I think the fix procedure is the same as Win-XP. Can any Time-Nutters on the list help me out with this...?? Many thanks!! Mike Baker Micanopy, FL -- ___ 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. ___ 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] Loran?
A loop with preamp or an active antenna (whip with preamp). Any Loran you receive will be DX as the US chains were turned off to pay for the tax cut :-) Astrons need a external frequency standard to work does your receiver have a model/Brand ? Stanley - Original Message From: Chris Albertson albertson.ch...@gmail.com To: Discussion of precise time and frequency measurement time-nuts@febo.com Sent: Sat, December 18, 2010 5:46:58 PM Subject: [time-nuts] Loran? Some one gave me an old Loran receiver. It fires up, the keypad and LCD display seem to work but status is always Searching Questions: 1) I think there are still Loran transmitters? 2) What does a Loran antenna look like? A random length of wire strung up in the attic is doing nothing. -- = Chris Albertson Redondo Beach, California ___ 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. ___ 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] ACAM pricing? [was Re: Frequency counter recommendation]
184.50 CHF/chip = 190 usd, what is wrong with this world the overprinted usd should not be on par with CHF that is the Swiss francs correct ? Stanley - Original Message From: Javier Serrano javier.serrano.par...@gmail.com To: Discussion of precise time and frequency measurement time-nuts@febo.com Sent: Fri, December 17, 2010 12:04:35 PM Subject: Re: [time-nuts] ACAM pricing? [was Re: Frequency counter recommendation] On Fri, Dec 17, 2010 at 2:49 PM, Scott Newell new...@cei.net wrote: Speaking of the ACAM parts, has anyone received pricing lately? I was quoted around $30 for the TDC-GP2 and over $200 for the GPX in small quantities early this year. -- We are expecting 10 TDC-GPX from the Swiss distributor for 205 CHF each, with a 10% discount, i.e. 184.50 CHF/chip. Javier ___ 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. ___ 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] Where 15 MHz?
Lucent Cell phone site GPSDO output 15 Mhz. Stanley - Original Message From: Magnus Danielson mag...@rubidium.dyndns.org To: Discussion of precise time and frequency measurement time-nuts@febo.com Sent: Mon, December 13, 2010 6:10:14 PM Subject: [time-nuts] Where 15 MHz? Fellow time-nuts, A quick question to settle my curiosity... Which mobile application uses 15 MHz? I know that GSM uses 13 MHz, but I can't recall which one uses 15 MHz. I'd be happy if someone would care to enlighten me. We have also seen 19,6608 MHZ being in use, and recently seen a description for it, even if I fail to recall it. Cheers, Magnus ___ 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. ___ 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] Where 15 MHz?
Looking at the age of some of it started with analog continued with TDMA and or CDMA not sure if it is still in use. Maybe analog used the non GPS stuff as the oldest was RB and XO but not GPS. Stanley - Original Message From: Magnus Danielson mag...@rubidium.dyndns.org To: time-nuts@febo.com Sent: Mon, December 13, 2010 6:26:55 PM Subject: Re: [time-nuts] Where 15 MHz? On 12/14/2010 01:24 AM, Stanley Reynolds wrote: Lucent Cell phone site GPSDO output 15 Mhz. Yes, that I already know, but for what kind of equipment was it meant? Cheers, Magnus ___ 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. ___ 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 HP list) Frequency Standards: Basics and Applications
Try www.n4iqt.com/books I like the first part and the last part the math in the middle is over my head :-) Stanley - Original Message From: Richard W. Solomon w1...@earthlink.net To: Discussion of precise time and frequency measurement time-nuts@febo.com Sent: Sun, December 12, 2010 4:57:07 PM Subject: Re: [time-nuts] (from HP list) Frequency Standards: Basics and Applications I get a file deleted error message ??? Perhaps it doesn't like Firefox ?? 73, Dick, W1KSZ -Original Message- From: paul swed paulsw...@gmail.com Sent: Dec 12, 2010 2:09 PM To: Discussion of precise time and frequency measurement time-nuts@febo.com Subject: Re: [time-nuts] (from HP list) Frequency Standards: Basics and Applications Seems to just send you to ad links??? On Sun, Dec 12, 2010 at 3:30 PM, Joseph Gray jg...@zianet.com wrote: For those who don't have or want a Scribd account (you can't download w/o one), here is a bookstore with links to a free copy: http://www.addebook.com/tech/engineer/frequency-standards-basics-and-applications_3817.html l Joe Gray W5JG On Sun, Dec 12, 2010 at 11:13 AM, k6...@comcast.net wrote: From the HP equipment list, thought it might be of interest here: - Posted by: k6...@aol.com k6...@aol.com k6yaz Sat Dec 11, 2010 8:16 pm (PST) A useful and interesting textbook, Frequency Standards Basics and Applications by Dr. Fritz Riehl, published in 2004, is available on scribd.com for free download. It is 543 pages in length. It is a pure pdf file, not a scanned copy. Stuart Los Angeles, CA - You need a facebook account or a free scribd account to download the pdf. 73 bob k6rtm ___ 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. ___ 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. ___ 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. ___ 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. ___ 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.
[time-nuts] wwvb signal strength
Past week wwvb propagation has been very good here in Alabama may be a good time to play with some of your wwvb discipline oscillators. Winter is, of course, the time of best ground-wave propagation from WWVB, so this is about as good as it’s ever going to get. from link : http://softsolder.com/2010/01/06/wwvb-reception-quality/ Stanley ___ 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] wwvb signal strength
Most of the atomic clocks update around midnight and don't try again for 24 hours or so, to save power the receiver is off most of the time. My spectracom 8165 needs hours of good signal to work. Except for good conditions it is rare to keep tracking around local sun rise and sun set. Stanley - Original Message From: Jim Palfreyman jim77...@gmail.com To: Discussion of precise time and frequency measurement time-nuts@febo.com Sent: Sat, December 4, 2010 3:34:45 PM Subject: Re: [time-nuts] wwvb signal strength I receive the Japanese low frequency signal here in Tasmania. I get it on a simple travel clock placed up high on a wooden bookshelf. Still figuring out which times of the year are best. Jim On Sunday, 5 December 2010, Stanley Reynolds stanley_reyno...@yahoo.com wrote: Past week wwvb propagation has been very good here in Alabama may be a good time to play with some of your wwvb discipline oscillators. Winter is, of course, the time of best ground-wave propagation from WWVB, so this is about as good as it’s ever going to get. from link : http://softsolder.com/2010/01/06/wwvb-reception-quality/ Stanley ___ 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. ___ 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. ___ 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] Getting Started in High Precision Timing
Matt, As a follow up just ran across this which is good to get started with : http://www.wriley.com/Examples%20of%201%20PPS%20Clock%20Measuring%20Systems.pdf In fact Mr. Riley has a very good selection of material at : http://www.wriley.com/#papers Stanley - Original Message From: Matt Davis mattdav...@gmail.com To: time-nuts@febo.com Sent: Mon, November 15, 2010 7:31:42 AM Subject: [time-nuts] Getting Started in High Precision Timing Hello all, I have been a software hacker for years but have never really done too much hardware hacking. I have been looking at oxco modules, but the data sheets of various vendors do not really provide me with a good basis as to what such an oscillator would provide me. I assume its just oscillation given the given frequency. Do any of you all have any good links/resources aside from what a basic google would provide, as to how to get the data from the oscillator at a pulse-per-second rate allowing me to do some basic timing. Really, I'm just looking for some first steps in hacking on these high-precision oscillators. Thanks -Matt ___ 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. ___ 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] Getting Started in High Precision Timing
I have been a software hacker for years but have never really done too much hardware hacking. I have been looking at oxco modules, but the data sheets of various vendors do not really provide me with a good basis as to what such an oscillator would provide me. I assume its just oscillation given the given frequency. Do any of you all have any good links/resources aside from what a basic google would provide, as to how to get the data from the oscillator at a pulse-per-second rate allowing me to do some basic timing. Really, I'm just looking for some first steps in hacking on these high-precision oscillators. Matt, Yes I'm sure many on this list have large collections information but you would need to be very specific to receive an answer, make, model, and which spec. Several projects can be found in the list archives for dividing the oxco rate to the PPS rate. Check the TAPR web site for a TADD-2 PPS divider. In general you accumulate all sorts of lab grade test equipment or make your own equipment to measure the output. The catch 22 is you need a better reference to measure a unknown device. Most start with GPSDO and a Time Interval Counter / Frequency Counter a way to log your data to process on a computer is good unless you want to go old school with pen and paper and stop watch ;-) Stanley ___ 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] AUSTRON MODEL 2100F Conversion
No not compatible. But check Paul Swedberg's Loran simulator here: http://www.n4iqt.com/simloran/ Stanley - Original Message From: Perry Sandeen sandee...@yahoo.com To: time-nuts-requ...@febo.com time-nuts@febo.com Sent: Sun, October 3, 2010 5:19:02 PM Subject: [time-nuts] AUSTRON MODEL 2100F Conversion List, To provide a cross-check to my Lucent GPS, I recently bought a AUSTRON MODEL 2100F (bad) as I was unaware the Loran C had been shut down. But the price was $100 (good). The question becomes if it I can convert it to 60 KHz reception will it recognize the time codes and get a stable reference frequency? Or do I now own a nice piece of history? 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. ___ 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] Lucent Rubidium Adjustment
Depends on which one you have but the one with heat sink fins on the front has a adjustment pot under a screw on the front appears as a break in the 3rd fin from the left. Don't know about the gold color case one's. Stanley - Original Message From: Perry Sandeen sandee...@yahoo.com To: time-nuts-requ...@febo.com time-nuts@febo.com Sent: Sun, October 3, 2010 5:30:20 PM Subject: [time-nuts] Lucent Rubidium Adjustment Gents, I have several Lucent rubidiums that seem to be .02 Hz off at 15 MHz compared to the 15 MHz Lucent GPS. Does anyone know how to either phase lock it to a GPS of install something like a 20 turn pot to adjust the control pin frequency so an exact match may be achieved? 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. ___ 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] AUSTRON MODEL 2100F Conversion
- Original Message From: paul swed paulsw...@gmail.com To: j...@quik.com; Discussion of precise time and frequency measurement time-nuts@febo.com Sent: Sun, October 3, 2010 10:06:40 PM Subject: Re: [time-nuts] AUSTRON MODEL 2100F Conversion Won't work completely different. I built a very simple loran c sim and the docs were available online. But just checked the N4IQT links on yahoo and it looks like the infos gone. snip Paul, It's still at: http://www.n4iqt.com/simloran/ If you look for WB8-TSL LORAN C simulator it is still there. Stanley ___ 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] AUSTRON MODEL 2100F Conversion
Yahoo has problems try http://n4iqt.com/simloran/ Stanley - Original Message From: Stanley Reynolds stanley_reyno...@yahoo.com To: Discussion of precise time and frequency measurement time-nuts@febo.com Sent: Sun, October 3, 2010 10:26:37 PM Subject: Re: [time-nuts] AUSTRON MODEL 2100F Conversion - Original Message From: paul swed paulsw...@gmail.com To: j...@quik.com; Discussion of precise time and frequency measurement time-nuts@febo.com Sent: Sun, October 3, 2010 10:06:40 PM Subject: Re: [time-nuts] AUSTRON MODEL 2100F Conversion Won't work completely different. I built a very simple loran c sim and the docs were available online. But just checked the N4IQT links on yahoo and it looks like the infos gone. snip Paul, It's still at: http://www.n4iqt.com/simloran/ If you look for WB8-TSL LORAN C simulator it is still there. Stanley ___ 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. ___ 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] Timing Distribution in Mountainous Terrain
On the crazy side another common view object is the lunar laser ranging retroreflector array. Has been improvements in cost of lasers and telescopes in the past 41 years and it doesn't appear to be headed for shutdown anytime soon. Stanley - Original Message From: Mark J. Blair n...@nf6x.net To: Discussion of precise time and frequency measurement time-nuts@febo.com Sent: Fri, September 10, 2010 11:49:49 AM Subject: Re: [time-nuts] Timing Distribution in Mountainous Terrain I presume that there's a good reason for the selection of antenna sites which don't have LOS to each other. However, would it be possible to select additional sites at which to install repeaters to allow timing calibrations to be made between pairs of primary receiving sites? These repeaters could also provide backup communications so that a primary receiving site isn't necessarily taken out of action if its communication channel (wireline?) gets cut by a wandering backhoe. Each repeater site would be selected to have LOS to two or more primary receiving sites, or when that's not possible, to one primary receiving site and another repeater that can see a different site. While multiplying the number of sites wouldn't be cheap (even considering that the repeater sites may host much less expensive equipment than the primary receiving sites, and may be able to operate without wireline communications or power lines to the sites), it might be cheaper than installing hydrogen masers and radio telescopes, designing custom aircraft and flying them overhead every 20 minutes, etc. -- Mark J. Blair, NF6X n...@nf6x.net Web page: http://www.nf6x.net/ GnuPG public key available from my web page. ___ 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. ___ 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] Timing Distribution in Mountainous Terrain
snip If you have to work with the existing corner cubes, I don't see how to start with a pulse at one site, bounce it off the moon, and get it back to another site that isn't nearby. If you didn't send the pulse it would be hard to time the trip anyway no start time. But it one site is transmitting a series of accuratly spaced pluses then ... Stanley ___ 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] Timing Distribution in Mountainous Terrain
How to keep hundreds of miles of copper stable or predict it's delay ? Stanley - Original Message From: J. L. Trantham, M. D. jlt...@att.net To: Discussion of precise time and frequency measurement time-nuts@febo.com Sent: Fri, September 10, 2010 6:44:35 PM Subject: Re: [time-nuts] Timing Distribution in Mountainous Terrain I guess I am thinking about this from a user perspective rather than an engineering design and implementation perspective. If the requirement is aircraft separation, LORAN should be adequate for that, if it was still up. You would only have to transmit your position and altitude to a ground receiving station that then would relay it to the Center Controllers to be displayed on a map along with all the other aircraft. However, it seems they want to do this by use of an upside down but otherwise 'GPS like method', i.e., the 'satellites' are fixed to mountaintops and the aircraft still moves. That being the case, what about a fixed, land-line, connection for every mountaintop to a central location that broadcasts the time signal, calibrate the system using GPS then rely on the central ground station to keep it running? Joe -Original Message- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com]on Behalf Of Oz-in-DFW Sent: Friday, September 10, 2010 12:21 PM To: Discussion of precise time and frequency measurement Subject: Re: [time-nuts] Timing Distribution in Mountainous Terrain On 9/10/2010 7:26 AM, Ralph Smith wrote: On Sep 10, 2010, at 7:50 AM, J. L. Trantham wrote: Loran was used as an area navigation method in aviation for many years. It was available nation wide with a number of chains. I had assumed that the area of interest was the Rocky's but if the Appalachians, even better. The site currently under consideration is in Colorado. Only problem with Loran, of course, is that is has been killed, thus the operative word was above. If the design and approach bears out it could be deployed over a much wider scale. Ralph Even if LORAN was alive it wouldn't meet the requirement. You'd still have 20-30 M position uncertainty in a differental application - way more than your 30 ns. I thiink that dropping LORAN was a really big mistake, but it wouldn't meet this need. I used to see several 100 ns of time drift and jitter when I was in San Antonio and watching Boise City, OK (~600 Mi) -- mailto:o...@ozindfw.net Oz POB 93167 Southlake, TX 76092 (Near DFW Airport) ___ 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. ___ 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. ___ 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] Timing Distribution in Mountainous Terrain
~ 1ft = 1 ns for coax, but 1000-2000 us is common delay for long phone lines which is very frequency dependent, you would want unloaded circuits, loading coils would make for more problems. My experience with metallic circuits is limited to less than 10 miles at some point you would need an amplifier/repeater. I do know noise and cross talk and other impairments are common. Data modem design is quite complicated but I don't think they are very predictable as far as delay goes, except delay increases and transfer rate decreases with impairments. Stanley - Original Message From: J. L. Trantham jlt...@att.net To: Discussion of precise time and frequency measurement time-nuts@febo.com Sent: Fri, September 10, 2010 9:09:29 PM Subject: Re: [time-nuts] Timing Distribution in Mountainous Terrain -Original Message- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of Stanley Reynolds Sent: Friday, September 10, 2010 7:13 PM To: Discussion of precise time and frequency measurement Subject: Re: [time-nuts] Timing Distribution in Mountainous Terrain How to keep hundreds of miles of copper stable or predict it's delay ? Stanley Would temperature changes over any consecutive 6 day period create a 30 nS change (assuming the 'central station' is indeed central)? And, if so, would that make any difference in position accuracy since all stations would have the same or similar error? Oops, there I go again thinking as a 'user' :). Joe ___ 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. ___ 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] Timing Distribution in Mountainous Terrain
Does the GPS backup include other sats ? As long as all sites could see the same sat then using it as a standard they would drift together. Stanley - Original Message From: Ralph Smith ra...@ralphsmith.org To: Discussion of precise time and frequency measurement time-nuts@febo.com Sent: Thu, September 9, 2010 11:45:04 AM Subject: Re: [time-nuts] Timing Distribution in Mountainous Terrain The requirement is 30 nanoseconds, so individual rubidium holdover over six days won't cut it. Ralph On Thu, September 9, 2010 11:58 am, Robert Darlington wrote: Symmetricom makes GPS based NTP time servers with excellent holdover capability. I think our SyncServer with an OXCO is good for +/- 0.5 second holdover over something like 60 days. They have options for Rb oscillators installed that will make that much much better and it might fall inside of your requirements. Give them a look. You're welcome to mail me directly with questions about mine if you like. -Bob On Thu, Sep 9, 2010 at 9:37 AM, Ralph Smith ra...@ralphsmith.org wrote: We have a requirement for approximately ten radio sites to be synchronized to within 30 ns of each other. Ordinarily you could throw in an appropriate GPSDO and be done with it. However, we also have the reqirement to be able to operate independent of GPS for up to six days. If we were able to have each site within line of sight of another, and could form a network including all sites, we could do differential time measurement between the mutually visible sites and correct in that way. Unfortunately, that is not the case. Absolute time accuracy is not critical, but relative time accuracy is. Does anyone out there have any ideas? Thanks, Ralph AB4RS ___ 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. ___ 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. ___ 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. ___ 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.
[time-nuts] Small DMTD project parts
I not able to organize a parts order but did notice a break in price on the transformers at mini-circuits at quantity 10, went from $9.95 to $2.29 this maybe a mistake, as this is the only part that had such a break. Stanley ___ 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] Freestanding mast
Yes we do need leap-Centimeters for MSL :-D Stanley snip Some bureaucrat adjusted MSL by 1.3m quietly because it would be politically incorrect to admit that the globe was actually warming. We have some idea of how time is adjusted for GPS. Does anyone know how and when MSL is adjusted? I mean, 1.3m is quite a lot. Bill Hawkins -Original Message- From: Thomas A. Frank Sent: Monday, September 06, 2010 7:57 PM On Sep 5, 2010, at 8:01 AM, Steve Rooke wrote: Meant to add, my Z3805 always used to report that the antenna hight was +7.50m (MSL) but now it is saying +6.20 (MSL), if you believe that. Steve That might be something worth investigating. After all, if it's true, that's not a good trend... Tom Frank, KA2CDK ___ 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. ___ 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] Small DMTD project PCBs Group Buy Update, boards are here !
Brice I don't receive all the messages from the list but check the archives. I have the boards and extras so busy packing / shipping. Just checked paypal and did not see your payment. If you have sent it do not worry I will figure it out. I use a spread sheet to match up names, nick names, paypal ids, and email address. Stanley - Original Message From: Heathkid heath...@heathkid.com To: Discussion of precise time and frequency measurement time-nuts@febo.com Sent: Mon, September 6, 2010 11:14:18 PM Subject: Re: [time-nuts] Small DMTD project PCBs Group Buy Update, boards are here ! Stanley, Did I already send you payment for the expanded version? I'm still not getting any emails from you except from the list. What's the status of the Small DMTD Project? There hasn't been a word about it for a *long* time. 73 Brice KA8MAV - Original Message - From: Stanley Reynolds stanley_reyno...@yahoo.com To: time-nuts@febo.com Sent: Saturday, September 04, 2010 3:28 PM Subject: [time-nuts] Small DMTD project PCBs Group Buy Update,boards are here ! Packing them up to take to the PO. Paypal to stanley_reyno...@yahoo.com $9.50 per board $47.50 for the set of 5. If you mail your payment to: Stanley Reynolds 225 Alpine Street Birmingham, AL 35210 then $9 per board $45 for the set of 5. Yes I have plenty of extra boards. Notice arrow has a good price on the DDS chip. I have no plans to provide parts except if someone is unable to complete the project otherwise. Stanley ___ 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. ___ 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. ___ 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] Small DMTD project PCBs Group Buy Update, boards are here !
Yes this file: http://www.n4iqt.com/BillRiley/A-Small-DMTD-System.pdf Stanley - Original Message From: Robert Darlington rdarling...@gmail.com To: Discussion of precise time and frequency measurement time-nuts@febo.com Sent: Tue, September 7, 2010 11:54:56 AM Subject: Re: [time-nuts] Small DMTD project PCBs Group Buy Update, boards are here ! Hi Stanley, I'm very interested in building this project. Do you have documentation online? I'd like to read through it then send you the $47 for the boards. Thanks, Bob On Sat, Sep 4, 2010 at 1:28 PM, Stanley Reynolds stanley_reyno...@yahoo.com wrote: Packing them up to take to the PO. Paypal to stanley_reyno...@yahoo.com $9.50 per board $47.50 for the set of 5. If you mail your payment to: Stanley Reynolds 225 Alpine Street Birmingham, AL 35210 then $9 per board $45 for the set of 5. Yes I have plenty of extra boards. Notice arrow has a good price on the DDS chip. I have no plans to provide parts except if someone is unable to complete the project otherwise. Stanley ___ 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. ___ 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. ___ 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] Small DMTD project PCBs Group Buy Update, boards are here !
Bob, No parts list except this one which you can use to get started : http://n4iqt.com/BillRiley/DMTDMixerModulePartsList.xls Spreadsheet file or down load the free PCB express software and generate a parts list with them and files here : http://n4iqt.com/BillRiley/MixerModule_7.sch http://n4iqt.com/BillRiley/DDSModule.sch DDS board has the option for 4 distribution amps only 2 are used normally. PICTIC II board is used without the op amps and 7.5 volt regulator notes: http://n4iqt.com/BillRiley/No-interpolator.txt page 3 of this file has full parts list http://n4iqt.com/picticii/circuit-pcb.pdf If you install the interpolator it can be turned off with a software command. R25 a 10 K resistor only used with the TTL computer interface option, not used with the RS232 chip, is listed twice as 1% or 5% either will work but you don't need both. Stanley - Original Message From: Robert Darlington rdarling...@gmail.com To: Discussion of precise time and frequency measurement time-nuts@febo.com Sent: Tue, September 7, 2010 5:16:46 PM Subject: Re: [time-nuts] Small DMTD project PCBs Group Buy Update, boards are here ! Cool. Is there a parts list? I definitely want to build one. Looks like a really interesting project and a great opportunity for me to learn. I've been meaning to tinker with those AD DDS chips for a while. I have a dev kit for one of the models around here somewhere that I picked up for an ultrasound focusing project (sound radiation pressure was used to push blood cells to the center of a capillary tube) but all I really did was layout. No software for me on that one. -Bob On Tue, Sep 7, 2010 at 11:40 AM, Stanley Reynolds stanley_reyno...@yahoo.com wrote: Yes this file: http://www.n4iqt.com/BillRiley/A-Small-DMTD-System.pdf Stanley - Original Message From: Robert Darlington rdarling...@gmail.com To: Discussion of precise time and frequency measurement time-nuts@febo.com Sent: Tue, September 7, 2010 11:54:56 AM Subject: Re: [time-nuts] Small DMTD project PCBs Group Buy Update, boards are here ! Hi Stanley, I'm very interested in building this project. Do you have documentation online? I'd like to read through it then send you the $47 for the boards. Thanks, Bob On Sat, Sep 4, 2010 at 1:28 PM, Stanley Reynolds stanley_reyno...@yahoo.com wrote: Packing them up to take to the PO. Paypal to stanley_reyno...@yahoo.com $9.50 per board $47.50 for the set of 5. If you mail your payment to: Stanley Reynolds 225 Alpine Street Birmingham, AL 35210 then $9 per board $45 for the set of 5. Yes I have plenty of extra boards. Notice arrow has a good price on the DDS chip. I have no plans to provide parts except if someone is unable to complete the project otherwise. Stanley ___ 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. ___ 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. ___ 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. ___ 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. ___ 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 ceramic patch in what plastic housing?
Test the box minus the screws in a microwave oven if the material heats up then it is not transparent. May not be the plastic but a pigment that was added to give the box it's color. Stanley - Original Message From: Peter Krengel krengelda...@gmx.de To: time-nuts@febo.com Sent: Sun, September 5, 2010 11:12:05 AM Subject: [time-nuts] GPS ceramic patch in what plastic housing? Hello, I just did some experiments using a ceramic patch antenna inside a small plastic (80 x 30 x 20mm) screw box and experienced much bader signals at lower elevations. The plastic is marked as PS (I guess polystyrole ?). Further experiments covering a GPS with the same kind of box seemed to effect the signals too. On the other hand covering the patch with a flat pcs of the same material didnt effect the antenna. Is there possibly a cavity effect? What to take best? Any ideas? Thank you Peter, DG4EK ___ 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. ___ 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 ceramic patch in what plastic housing?
The plastic may also function as a lens particularly the corners of the box see: http://authors.library.caltech.edu/10409/1/ZMUieeetmtt92.pdf figure 2 shows a polyethylene lens. Stanley - Original Message From: Peter Krengel krengelda...@gmx.de To: time-nuts@febo.com Sent: Sun, September 5, 2010 11:12:05 AM Subject: [time-nuts] GPS ceramic patch in what plastic housing? Hello, I just did some experiments using a ceramic patch antenna inside a small plastic (80 x 30 x 20mm) screw box and experienced much bader signals at lower elevations. The plastic is marked as PS (I guess polystyrole ?). Further experiments covering a GPS with the same kind of box seemed to effect the signals too. On the other hand covering the patch with a flat pcs of the same material didnt effect the antenna. Is there possibly a cavity effect? What to take best? Any ideas? Thank you Peter, DG4EK ___ 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. ___ 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 ceramic patch in what plastic housing?
I would try a search for cake pans in the archive. Large funnel inverted to cover. http://www.mail-archive.com/time-nuts@febo.com/msg27517.html http://www.mail-archive.com/time-nuts@febo.com/msg27561.html Stanley - Original Message From: Peter Krengel krengelda...@gmx.de To: time-nuts@febo.com Sent: Sun, September 5, 2010 3:06:26 PM Subject: [time-nuts] GPS ceramic patch in what plastic housing? Thanks Robert, Stanley and Bob for the tips. I tested some materials in a microwave oven and they all seemed to be good because there was no heating (maybe handwarm at 800W). So the magic word seems to be refracting effects even at 1.5GHz... As I cannot get a commercial helf sphere for putting over the patch has anyone an idea what to take for i.e. from kitchen? Peter DG4EK ___ 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. ___ 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.
[time-nuts] Small DMTD project PCBs Group Buy Update, boards are here !
Packing them up to take to the PO. Paypal to stanley_reyno...@yahoo.com $9.50 per board $47.50 for the set of 5. If you mail your payment to: Stanley Reynolds 225 Alpine Street Birmingham, AL 35210 then $9 per board $45 for the set of 5. Yes I have plenty of extra boards. Notice arrow has a good price on the DDS chip. I have no plans to provide parts except if someone is unable to complete the project otherwise. Stanley ___ 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] Freestanding mast
ROHN 9H50 34 Foot Telescopic TV Wireless Antenna Push Up Mast http://www.3starinc.com/rohn_telescopic_masts.html I don't know this vendor just the first that came up in google. Stanley - Original Message From: Charles P. Steinmetz charles_steinm...@lavabit.com To: Discussion of precise time and frequency measurement time-nuts@febo.com Sent: Thu, September 2, 2010 7:46:00 PM Subject: [time-nuts] Freestanding mast I'm curious what the best freestanding mast is for a timing antenna (think Lucent timing antenna or marine mushroom GPS antenna -- light and pretty small). The mast would have its highest support at rooftop or chimney-top level, and could extend from there as far downward as the ground with additional supports as required. Should be able to survive at least Category 2 winds and heavy snow and ice. What reasonably available mast material no more than, say, 3 in maximum cross-section would allow the most vertical extension above the highest support, and how much extension would that be? I'm thinking 10 feet of 2 or so thin-wall steel tube may be OK, but beyond that I don't know. Tubing is probably not the optimum shape, but I assume the availability of other engineering shapes (say, + cross-section) is likely to be limited. Ideas? Thanks, Charles ___ 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. ___ 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] Freestanding mast
Picked that one as it fit the 3 wide request and is UPS shippable. The brackets and ground plate were also available. Stanley - Original Message From: J. Forster j...@quik.com To: Discussion of precise time and frequency measurement time-nuts@febo.com Sent: Thu, September 2, 2010 8:25:35 PM Subject: Re: [time-nuts] Freestanding mast I was just about to suggest a ham antenna tower. The triangular truss design is very rigid, yet presents low wind loading. I think there are application notes that help with siting and selection. Rohn is a very standard and pretty well respected name in the business. They also have a good selection of accessories. In this area, I see them at ham fleas on a regular basis. FWIW, -John === ROHN 9H50 34 Foot Telescopic TV Wireless Antenna Push Up Mast http://www.3starinc.com/rohn_telescopic_masts.html I don't know this vendor just the first that came up in google. Stanley - Original Message From: Charles P. Steinmetz charles_steinm...@lavabit.com To: Discussion of precise time and frequency measurement time-nuts@febo.com Sent: Thu, September 2, 2010 7:46:00 PM Subject: [time-nuts] Freestanding mast I'm curious what the best freestanding mast is for a timing antenna (think Lucent timing antenna or marine mushroom GPS antenna -- light and pretty small). The mast would have its highest support at rooftop or chimney-top level, and could extend from there as far downward as the ground with additional supports as required. Should be able to survive at least Category 2 winds and heavy snow and ice. What reasonably available mast material no more than, say, 3 in maximum cross-section would allow the most vertical extension above the highest support, and how much extension would that be? I'm thinking 10 feet of 2 or so thin-wall steel tube may be OK, but beyond that I don't know. Tubing is probably not the optimum shape, but I assume the availability of other engineering shapes (say, + cross-section) is likely to be limited. Ideas? Thanks, Charles ___ 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. ___ 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. ___ 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. ___ 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] Freestanding mast
$32.61 for me but maybe you are further away, heavy stuff, maybe it would pay to shop for a closer vendor. Stanley - Original Message From: Richard W. Solomon w1...@earthlink.net To: Discussion of precise time and frequency measurement time-nuts@febo.com Sent: Thu, September 2, 2010 8:49:24 PM Subject: Re: [time-nuts] Freestanding mast Make sure you are sitting down when you check the shipping charges. 73, Dick, W1KSZ -Original Message- From: Stanley Reynolds stanley_reyno...@yahoo.com Sent: Sep 2, 2010 9:16 PM To: Discussion of precise time and frequency measurement time-nuts@febo.com Subject: Re: [time-nuts] Freestanding mast ROHN 9H50 34 Foot Telescopic TV Wireless Antenna Push Up Mast http://www.3starinc.com/rohn_telescopic_masts.html I don't know this vendor just the first that came up in google. Stanley - Original Message From: Charles P. Steinmetz charles_steinm...@lavabit.com To: Discussion of precise time and frequency measurement time-nuts@febo.com Sent: Thu, September 2, 2010 7:46:00 PM Subject: [time-nuts] Freestanding mast I'm curious what the best freestanding mast is for a timing antenna (think Lucent timing antenna or marine mushroom GPS antenna -- light and pretty small). The mast would have its highest support at rooftop or chimney-top level, and could extend from there as far downward as the ground with additional supports as required. Should be able to survive at least Category 2 winds and heavy snow and ice. What reasonably available mast material no more than, say, 3 in maximum cross-section would allow the most vertical extension above the highest support, and how much extension would that be? I'm thinking 10 feet of 2 or so thin-wall steel tube may be OK, but beyond that I don't know. Tubing is probably not the optimum shape, but I assume the availability of other engineering shapes (say, + cross-section) is likely to be limited. Ideas? Thanks, Charles ___ 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. ___ 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. ___ 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. ___ 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.
[time-nuts] Small DMTD project PCBs Group Buy Update
Boards will be here Friday September 3. Stanley ___ 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 NTP servers
If you are looking for a project vs a turn key solution check out : http://www.febo.com/time-freq/ntp/soekris/index.html Stanley - Original Message From: Colby Gutierrez-Kraybill co...@astro.berkeley.edu To: time-nuts@febo.com Sent: Tue, August 31, 2010 11:10:47 AM Subject: [time-nuts] GPS NTP servers Hello, I'm on the hunt for relatively inexpensive GPS based NTP time servers. Mainly, I'm looking for a survey of such items beyond the standard Symmetricom, Meinberg and CNS product lines. Thank you, Colby ___ 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. ___ 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 NTP servers
I would use a surplus thunderbolt vs the HP Z3801A GPS disciplined oscillator for cost reasons but would check to make sure a working driver exist for which ever gps receiver is connected to the RS232 port. Thunderbolt would feed the clock-block in either case. This is on my list to do but I'm not having much luck winning a bid on the net4501. Stanley ___ 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] Slightly OT - GPS-Based Accurate Direction Finding
- Original Message From: Neville Michie namic...@gmail.com snip It seems strange, with all those satellites, whose position is known with such accuracy, that we can not get an accurate azimuth, but then we do not have a sighting device to observe a referred object or satellites. cheers, Neville Michie If you have some experience installing DDS and FTA small TV dishes then it maybe possible to get within a degree using them as a reference. The Ku band 1 meter dish would be better than the small .5 meter / 18 dish. Has the advantage of working on cloudy day when landmarks are not visible. Stanley ___ 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] Bulletin Board / Forum
You can use www.timenuts.com to reach my forum, I can be reached here or there and several other places, all are welcome. Stanley - Original Message From: Steve Rooke sar10...@gmail.com To: Discussion of precise time and frequency measurement time-nuts@febo.com Sent: Wed, August 25, 2010 12:53:56 AM Subject: Re: [time-nuts] Bulletin Board / Forum On 25 August 2010 17:43, erniepe...@aol.com wrote: Stanley, how about the TIME-GURU name? Or how about:- time-sane time-slow time-not-so-nuts time-nuts-beginners time-nuts-non-exclusive time-nuts-not-bruce time-for-a-change time-stupid-questions or even:- time-nuts-excluded We are in danger of ending up with a TekScopes2 group here and do we really want to fork the group. Steve -- Steve Rooke - ZL3TUV G8KVD The only reason for time is so that everything doesn't happen at once. - Einstein ___ 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. ___ 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] Slightly OT - GPS-Based Accurate Direction Finding
Not cheap but VOR was used when I was flying. http://en.wikipedia.org/wiki/VHF_omnidirectional_range Stanley - Original Message From: Bob Camp li...@rtty.us To: Discussion of precise time and frequency measurement time-nuts@febo.com Sent: Wed, August 25, 2010 9:25:31 PM Subject: Re: [time-nuts] Slightly OT - GPS-Based Accurate Direction Finding Hi GPS is not very helpful for direction. It can be used as an accurate source of time and location to feed a solar or celestial direction estimate. Bob On Aug 25, 2010, at 9:04 PM, David Smith da...@smithfamily.net.au wrote: As a fair percentage of the discussion amongst the learned gentlemen on this group involves GPS-based timing systems, I'd like to ask a non-time related, but GPS-related question. As part of microwave radio experimentation, often on windy hilltops, I have a need to find direction very accurately. I have seen advertised GPS-based Azimuth Pointing Systems such as this: http://www.ascscientific.com/APS.html However they are a little (lot) out of my budget range. The system seems to work by taking the raw satellite phase information from two separate GPS systems and crunching the data to come up with an azimuth figure. Has anyone heard of a (Open Source?) program that could be used to do these calculations? Regards, David Smith ___ 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. ___ 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. ___ 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] Slightly OT - GPS-Based Accurate Direction Finding
google Icom IC-A24 Stanley - Original Message From: Bob Camp li...@rtty.us To: Discussion of precise time and frequency measurement time-nuts@febo.com Sent: Wed, August 25, 2010 9:25:31 PM Subject: Re: [time-nuts] Slightly OT - GPS-Based Accurate Direction Finding Hi GPS is not very helpful for direction. It can be used as an accurate source of time and location to feed a solar or celestial direction estimate. Bob On Aug 25, 2010, at 9:04 PM, David Smith da...@smithfamily.net.au wrote: As a fair percentage of the discussion amongst the learned gentlemen on this group involves GPS-based timing systems, I'd like to ask a non-time related, but GPS-related question. As part of microwave radio experimentation, often on windy hilltops, I have a need to find direction very accurately. I have seen advertised GPS-based Azimuth Pointing Systems such as this: http://www.ascscientific.com/APS.html However they are a little (lot) out of my budget range. The system seems to work by taking the raw satellite phase information from two separate GPS systems and crunching the data to come up with an azimuth figure. Has anyone heard of a (Open Source?) program that could be used to do these calculations? Regards, David Smith ___ 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. ___ 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. ___ 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] Slightly OT - GPS-Based Accurate Direction Finding
You still need to DF the VOR station to get your direction. guess any radio that receives 108 to 117 MHz is good for that. Stanley ___ 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.
[time-nuts] Bulletin Board / Forum
Started setting up a time-nuts board at: http://forums.n4iqt.com/modules.php?name=Forums Need ideas for topics. Stanley ___ 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] Bulletin Board / Forum
Personal Preference, Restrictions with the mail list format, would like a better way to search content. Stanley - Original Message From: Brian Kirby kilodelta4foxm...@gmail.com To: Discussion of precise time and frequency measurement time-nuts@febo.com Sent: Tue, August 24, 2010 9:36:24 PM Subject: Re: [time-nuts] Bulletin Board / Forum Whats the reason and motive for this ? On 8/24/2010 8:50 PM, Stanley Reynolds wrote: Started setting up a time-nuts board at: http://forums.n4iqt.com/modules.php?name=Forums Need ideas for topics. Stanley ___ 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. ___ 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. ___ 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] Bulletin Board / Forum
No, all my idea, I have not asked anyone's permission. I meant no disrespect. Stanley - Original Message From: Heathkid heath...@heathkid.com To: Discussion of precise time and frequency measurement time-nuts@febo.com Sent: Tue, August 24, 2010 11:26:21 PM Subject: Re: [time-nuts] Bulletin Board / Forum Stanley, I was under the impression you already had the permission of the *founders* to use the time-nuts name to start up this new forum. Was I mistaken? 73 Brice KA8MAV - Original Message - From: WB6BNQ wb6...@cox.net To: Discussion of precise time and frequency measurement time-nuts@febo.com Sent: Wednesday, August 25, 2010 12:05 AM Subject: Re: [time-nuts] Bulletin Board / Forum Stanley, It seems to me that we already have/had one somewhere [ ? ] or it was proposed and started but did not get off the ground [ ? ] However, I could be wrong or seriously confused. The nature of the timenuts list was supposed to be a low key - low noise list, not a beginners QA service and project workout. If you do get started and flying, perhaps your forum could handle that beginners QA service and the, sometimes, large load of the project traffic. I agree with Brian Kirby concerning respecting the Timenuts title and so forth. John Ackermann has put a lot of time and effort into the basis of the Timenuts list, not to mention the expense of hosting and maintaining the list and its archives. The Timenuts moniker, while recognized and respected internationally, is a form of prior art and may well constitute a form of copyright. I would suggest that not only is it proper to ask him his feelings but may require his permission for use of his list moniker. BillWB6BNQ Stanley Reynolds wrote: Started setting up a time-nuts board at: http://forums.n4iqt.com/modules.php?name=Forums Need ideas for topics. Stanley ___ 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. ___ 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. ___ 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. ___ 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] Phase noise measurement (was - no subject)
http://cgi.ebay.com/5-pcs-N-Channel-Transistor-2SK369-K369-Low-Noise-BL-/150471697656 Stanley - Original Message From: ewkeh...@aol.com ewkeh...@aol.com To: time-nuts@febo.com Sent: Sat, August 21, 2010 6:07:25 AM Subject: Re: [time-nuts] Phase noise measurement (was - no subject) Hi I have the Hp phase noise system with the 35601A but use most the time the Wenzel Audio Amp referred to in this email. Perfect! I drive with it a 3561A and a 7L5! Works for me. The only problem is getting any more 2SK369. Any recommendations? Thanks Bert Kehren In a message dated 8/20/2010 6:54:05 P.M. Eastern Daylight Time, jmi...@pop.net writes: Would anyone else like to suggest a known good low phase noise buffer amplifier? Maybe something from a Fred Walls paper? You can always build HF isolation amps by rigging MMICs and attenuators together, but this will not reliably get you below -160 dBc/Hz. Bruce G. has given some good advice in this regard, with some circuit designs at http://www.ko4bb.com/~bruce/IsolationAmplifiers.html and elsewhere. I'm a fan of this version (also from Bruce): http://www.ke5fx.com/norton.htm This one has the advantage of simplicity. No weird parts, nothing that is likely to be out of production or hard to find, and dirt cheap. I've measured the broadband floor at near -170 dBc/Hz at 10 MHz, and its noise contribution at 100 Hz is below what the 3048A can see. These figures are adequate to measure any 10811-class OCXOs. A practical PN measurement system for 10811-class oscillators can be made by building two of those amplifiers and using them to drive pretty much any random double-balanced mixer found on eBay with +10 dBm LO specs or more. Both ports should be driven strongly to reject AM artifacts and avoid degrading the excellent noise floor offered by the amps. I'd hit the LO port with +10 to +12 dBm and the RF port with at least 0 dBm. Then, see the Wenzel app note here ( http://www.wenzel.com/documents/measuringphasenoise.htm ) to lock the two oscillators in quadrature and amplify the resulting baseband output. Any of several sound-card FFT programs can be used to generate an output graph, although if you want absolute calibration in dBc/Hz you need to be prepared to sweep the actual test setup from mixer output to FFT input to watch for various sources of flatness error. A combination of an AD7760-EVAL board and a Digilent Nexys2 can be used to construct an excellent baseband digitizer for the DC-1 MHz spectrum, but most of the time a good-quality 192-kHz sound card is fine for this sort of work. Most good crystal oscillators reach their broadband floor by 10 kHz, so there's no real need to go out to 1 MHz or more. -- john, KE5FX ___ 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. ___ 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. ___ 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] Small DMTD project PCBs Group Buy Update
Brice, You are on the list. Will let everyone know when payment is needed, if you are using paypal no need to send payment till I can ship the boards, if by mail then should arrive after September 3. Stanley From: Heathkid heath...@heathkid.com To: Discussion of precise time and frequency measurement time-nuts@febo.com Sent: Wed, August 18, 2010 11:42:43 PM Subject: Re: [time-nuts] Small DMTD project PCBs Group Buy Update Stanley, Are you ready to accept payments for these now or are you still working out the details? I would want the 3rd PICTIC II option for the expanded DMTD. 73 Brice KA8MAV - Original Message - From: Stanley Reynolds stanley_reyno...@yahoo.com To: Discussion of precise time and frequency measurement time-nuts@febo.com Sent: Thursday, August 19, 2010 12:27 AM Subject: Re: [time-nuts] Small DMTD project PCBs Group Buy Update Just boards, 5 times 9.00 = $45 mailed payment $47.5 Paypal two pictic, one DDS board, two mixer boards, note the PDF talks about a 3rd pictic as an option. If you had another offset source no need for the DDS board. If you have Time interval counters that are interfaced to a computer then no need for the PicTic boards. Guess you could use the DDS board for other projects also. Each mixer board has two identical channels so it would be possible to use just one in some applications. I 'm offering the boards in any combination. Stanley From: Eric Garner garn...@gmail.com To: Discussion of precise time and frequency measurement time-nuts@febo.com Sent: Wed, August 18, 2010 10:58:36 PM Subject: Re: [time-nuts] Small DMTD project PCBs Group Buy Update Just to be clear, the ~48 dollar total includes all of the required boards( minus components) needed to make the dmtd setup work? Thanks, Eric Sent from my Banana Jr. mobile device On Aug 18, 2010, at 1:50 PM, Stanley Reynolds stanley_reyno...@yahoo.com wrote: Will place order in the next few days please email me with any suggested changes to the mixer or DDS boards. Stanley From: Stanley Reynolds stanley_reyno...@yahoo.com To: time-nuts@febo.com Sent: Sun, August 15, 2010 3:14:50 PM Subject: [time-nuts] Small DMTD project PCBs Group Buy Any interest in boards at 8 USD each as before ? The project would require 2 or 3 pictic boards, 2 mixer boards, and 1 DDS board. 5 boards plus shipping about 47.50 usd Please email me off list with your interest. I not sure if using the pictic II vs I board will present problems for the software. Would also like to workout any changes to the DDS or Mixer Boards before I place the order. Yes I still have PICTIC II boards from the first order and other parts for them. Stanley ___ 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. ___ 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. ___ 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. ___ 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. ___ 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. ___ 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] (no subject)
My crystal ball indicates the comparison is used Lpro and used Tbolt, original poster wanted to know why expend $100 for Tbolt when Lpro is cheaper. Stanley From: Dan Rae dan...@verizon.net To: Discussion of precise time and frequency measurement time-nuts@febo.com Sent: Thu, August 19, 2010 4:56:41 PM Subject: Re: [time-nuts] (no subject) Bob Camp wrote: Hi Simple answer - they self calibrate to 1x10^-13 at a one day time period. Essentially zero long term drift. Bob Have I missed something? A self calibrating cheap Rb unit? a self calibrating 10811? I really must wake up :^) dr -Original Message- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of Mark2 Sent: Thursday, August 19, 2010 4:49 PM To: time-nuts@febo.com Subject: [time-nuts] (no subject) Sure they're good but other than it's a really cool and stable oscillator why is everyone bothering with these when you can get a decent LPRO Rubidium for the same or less . It at lest ten times more stable than the HP oven job. I just bought 5 good LPROs on Ebay for about $200.00 plus shipping... Mark ___ 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. ___ 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. ___ 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. ___ 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.
[time-nuts] Small DMTD project PCBs Group Buy Update
Will place order in the next few days please email me with any suggested changes to the mixer or DDS boards. Stanley From: Stanley Reynolds stanley_reyno...@yahoo.com To: time-nuts@febo.com Sent: Sun, August 15, 2010 3:14:50 PM Subject: [time-nuts] Small DMTD project PCBs Group Buy Any interest in boards at 8 USD each as before ? The project would require 2 or 3 pictic boards, 2 mixer boards, and 1 DDS board. 5 boards plus shipping about 47.50 usd Please email me off list with your interest. I not sure if using the pictic II vs I board will present problems for the software. Would also like to workout any changes to the DDS or Mixer Boards before I place the order. Yes I still have PICTIC II boards from the first order and other parts for them. Stanley ___ 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. ___ 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 pcb IDs??
Synergy Motorola info here : http://www.wa5rrn.com/GPS%20Other/Motorola%20M12/5vltb.pdf UT+ Oncore R5xxxU Customer Specials trimble resolution t http://trl.trimble.com/docushare/dsweb/Get/Document-183796/13441+Resolution+FA2.pdf http://www.dpie.com/manuals/gps/trimble/ResolutionT_072408.pdf Stanley From: Alan Melia alan.me...@btinternet.com To: Time-Nuts measurement time-nuts@febo.com Sent: Wed, August 18, 2010 6:07:20 PM Subject: [time-nuts] GPS pcb IDs?? Hi I have just acquired a couple of GPS receiver pcbs, ex Telcoms equipment. I know a lot of htese poards were discussed so time ago on the group. Does anyone recognise what they are and could point me at some intrormations please. I am afraid the flash has washed the the pics out a bit but hopefully there is enough detail to be recognised http://www.alan.melia.btinternet.co.uk/GPS/Trimble_top.JPG http://www.alan.melia.btinternet.co.uk/GPS/Trimble_lower.JPG http://www.alan.melia.btinternet.co.uk/GPS/Synergy_top.JPG http://www.alan.melia.btinternet.co.uk/GPS/Synergy_lower.JPG The Trimble pcb is 2.6 by 1.25in., and the Synergy is 3.15 by 1.6 in. Thanks Alan G3NYK ___ 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. ___ 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.
[time-nuts] PICTIC II no interpolator as used in the small DMDT
The small DMDT uses no interpolator and a 50 Mhz derived from the 10Mhz reference Software just use the counter value or Interpolator gain 0 Hardware looking at page 2 of the schmatic all you need is C1,C2,C3 and U1 on that page do not install: U3,U5,U8,U10 R1 - R23 C5,7,10,11,12,13,14,19,20,21 Q1,Q2 D1 - D10 page 1 do not install: U2 C4 Stanley ___ 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] Small DMTD project PCBs Group Buy Update
Yes you are on the list. Stanley From: Heathkid heath...@heathkid.com To: Discussion of precise time and frequency measurement time-nuts@febo.com Sent: Wed, August 18, 2010 8:41:45 PM Subject: Re: [time-nuts] Small DMTD project PCBs Group Buy Update Stanley, I'm not getting *any* emails from you privately. So, can you please confirm I'm on the list for a set of boards for this project (expanded system)? Also, is anyone stepping up for the PIC programming? Also, for some of the more expensive or harder to get components... would anyone be willing to do a group purchase? Thanks! 73 Brice KA8MAV - Original Message - From: Stanley Reynolds stanley_reyno...@yahoo.com To: Discussion of precise time and frequency measurement time-nuts@febo.com Sent: Wednesday, August 18, 2010 4:50 PM Subject: [time-nuts] Small DMTD project PCBs Group Buy Update Will place order in the next few days please email me with any suggested changes to the mixer or DDS boards. Stanley From: Stanley Reynolds stanley_reyno...@yahoo.com To: time-nuts@febo.com Sent: Sun, August 15, 2010 3:14:50 PM Subject: [time-nuts] Small DMTD project PCBs Group Buy Any interest in boards at 8 USD each as before ? The project would require 2 or 3 pictic boards, 2 mixer boards, and 1 DDS board. 5 boards plus shipping about 47.50 usd Please email me off list with your interest. I not sure if using the pictic II vs I board will present problems for the software. Would also like to workout any changes to the DDS or Mixer Boards before I place the order. Yes I still have PICTIC II boards from the first order and other parts for them. Stanley ___ 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. ___ 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. ___ 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. ___ 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] Small DMTD project PCBs Group Buy Update
Just boards, 5 times 9.00 = $45 mailed payment $47.5 Paypal two pictic, one DDS board, two mixer boards, note the PDF talks about a 3rd pictic as an option. If you had another offset source no need for the DDS board. If you have Time interval counters that are interfaced to a computer then no need for the PicTic boards. Guess you could use the DDS board for other projects also. Each mixer board has two identical channels so it would be possible to use just one in some applications. I 'm offering the boards in any combination. Stanley From: Eric Garner garn...@gmail.com To: Discussion of precise time and frequency measurement time-nuts@febo.com Sent: Wed, August 18, 2010 10:58:36 PM Subject: Re: [time-nuts] Small DMTD project PCBs Group Buy Update Just to be clear, the ~48 dollar total includes all of the required boards( minus components) needed to make the dmtd setup work? Thanks, Eric Sent from my Banana Jr. mobile device On Aug 18, 2010, at 1:50 PM, Stanley Reynolds stanley_reyno...@yahoo.com wrote: Will place order in the next few days please email me with any suggested changes to the mixer or DDS boards. Stanley From: Stanley Reynolds stanley_reyno...@yahoo.com To: time-nuts@febo.com Sent: Sun, August 15, 2010 3:14:50 PM Subject: [time-nuts] Small DMTD project PCBs Group Buy Any interest in boards at 8 USD each as before ? The project would require 2 or 3 pictic boards, 2 mixer boards, and 1 DDS board. 5 boards plus shipping about 47.50 usd Please email me off list with your interest. I not sure if using the pictic II vs I board will present problems for the software. Would also like to workout any changes to the DDS or Mixer Boards before I place the order. Yes I still have PICTIC II boards from the first order and other parts for them. Stanley ___ 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. ___ 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. ___ 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. ___ 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] WTB: Older Version of LabView
Their forums are good source of info, I don't think the student version is limited but you can ask there : http://forums.ni.com/ In a past life I was a programmer but found the virtual instrument hard to understand, could be it's too easy. CTL T which brings up two windows was one key, learning the menus was another. User group meetings help also. Stanley From: J. Forster j...@quik.com To: Discussion of precise time and frequency measurement time-nuts@febo.com Sent: Tue, August 17, 2010 10:07:03 AM Subject: Re: [time-nuts] WTB: Older Version of LabView Do the Student Versions allow full access and use of the NI Driver library? I want to control some definitely non-student hardware. Best, -John Student versions of LabView are in bounds for personal use. Using the results for publication might get NI's attention, but otherwise they have no problem with individual use. I have registered my copy of LabView 8.5 Student Edition gotten direct technical help from them with very good results. Student versions have been on *bay for less than $90. Pete Rawson ___ 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. ___ 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. ___ 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] Small DMTD project PCBs Group Buy
From: Don Latham d...@montana.com To: Discussion of precise time and frequency measurement time-nuts@febo.com Sent: Mon, August 16, 2010 12:56:48 AM Subject: Re: [time-nuts] Small DMTD project PCBs Group Buy Thank You, for the source. This morning I have added some of the missing cost to the spread sheet : http://www.n4iqt.com/BillRiley/DMTDMixerModulePartsList.xls While the PICTIC is thou the hole the other boards use surface mount parts. Stanley Just a note, Arrow has a bunch of the dread 74AC175P and will ship small orders... Don ___ 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] PicTic Data
- Original Message From: Steve Rooke sar10...@gmail.com To: Discussion of precise time and frequency measurement time-nuts@febo.com Sent: Sun, August 15, 2010 7:05:40 AM Subject: Re: [time-nuts] PicTic Data On 15 August 2010 17:01, Stanley Reynolds stanley_reyno...@yahoo.com wrote: Thanks for looking at my data that was what I was fishing for all along :-) I was looking at the article: A Small Dual Mixer Time Difference (DMTD) Clock Measuring System W.J. Riley Richard posted And thinking it would be nice to do the DSS and Mixer boards to go with the pictic II. I have been speaking to Bill Riley about doing this myself and he has sent me all the board designs, software, etc. to enable one to be built. I can ask him if he is OK if I distribute this if you wish. Steve snip Please do, I would be willing to do the PC boards if the demand makes if possible. Stanley ___ 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] Fwd: Fwd: PicTic Data
Files here : www.n4iqt.com/BillRiley removed the spaces in the file names but they are still a mix of upper and lower case still checking them to make sure they are OK Stanley ___ 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] Fwd: Fwd: PicTic Data
Files here www.n4iqt.com/BillRiley If you rename the PCB and or the SCH files you will need to relink them in the expressPCB program. The mixer board has a netlink warning but this maybe on purpose as it is with the ground and maybe the isolation mentioned in the notes. Stanley - Original Message From: jimlux jim...@earthlink.net To: Discussion of precise time and frequency measurement time-nuts@febo.com Sent: Sun, August 15, 2010 11:37:07 AM Subject: Re: [time-nuts] Fwd: Fwd: PicTic Data Steve Rooke wrote: Stanley and Nigel, I have received the go ahead to distribute the Small DMTD project files from Bill. It is in the form of a 500k zip so how do we want to play this? For a start, Gmail will not let me send .exe files, even though they are inside a zip file and I'm not putting them into a password encrypted file to circumvent this so I'll send the archive with the extension changed to .xxx. If you don't know how to change that back to .zip may I suggest you contact Mr Gates and tell him that his method of file typing sucks and is a noddy system fit only for Toytown. I can host the file if needed, let me know. ___ 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. ___ 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.
[time-nuts] Small DMTD project PCBs Group Buy
Any interest in boards at 8 USD each as before ? The project would require 2 or 3 pictic boards, 2 mixer boards, and 1 DDS board. 5 boards plus shipping about 47.50 usd Please email me off list with your interest. I not sure if using the pictic II vs I board will present problems for the software. Would also like to workout any changes to the DDS or Mixer Boards before I place the order. Yes I still have PICTIC II boards from the first order and other parts for them. Stanley ___ 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] What's the latest correct PICTIC II Mouser project?- Heathkid
From: Bob Camp li...@rtty.us To: Discussion of precise time and frequency measurement time-nuts@febo.com Sent: Sat, August 14, 2010 7:05:35 AM Subject: Re: [time-nuts] What's the latest correct PICTIC II Mouser project?- Heathkid Hi This isn't my design originally. The 620 ohm resistor in question sources current into a diode stack. The initial current will vary more from the tolerance of the diodes than it will from the 1 ohm change ( or 6 ohm = 1%). snip Maybe we should buy lots of diodes to match them, they are relative cheap, also use extra care installing them. Using hemostats as heat sinks and just enough heat for a good connection do not want to damage/change them after the match. Stanley ___ 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] What's the latest correct PICTIC II Mouserproject?- Heathkid
1) I have no previous experience building precision anything, I'm not an expert. 2) My guess is the design expects quality components and depends on the auto calibration to correct any component drift. Short term stability between calibrations is what we want. The absolute value of C16 and C17 is not as important as it's stability in leakage and value. Guess we could put the didoes in a constant temp oven but not sure all the components are more stable at higher temps. Good ideas about didoes here : http://www.sciencebuddies.org/science-fair-projects/project_ideas/Elec_p033.shtml (note Figure 3 and how the didoes voltage drop is more linear at higher temps vs room temp.) Figure 3. Stanley From: Heathkid heath...@heathkid.com To: Discussion of precise time and frequency measurement time-nuts@febo.com Sent: Sat, August 14, 2010 10:43:15 AM Subject: Re: [time-nuts] What's the latest correct PICTIC II Mouserproject?- Heathkid Okay Stanley... I've got a Tektronix 370A curve tracer at work. So the diodes need to be matched? No problem. So I match the diodes and the resistors to within 0.001%. Are there any other components that need matched? Also, you mentioned using hemostats as heatsinks on the diodes while installing them. I know that diodes make very good temperature sensors as well. Are there any suggestions on keeping them stable after they are on the board? What is the recommended operating temperature of the PICTIC II? Thanks. 73 Brice KA8MAV - Original Message - From: Stanley Reynolds stanley_reyno...@yahoo.com To: Discussion of precise time and frequency measurement time-nuts@febo.com Sent: Saturday, August 14, 2010 10:43 AM Subject: Re: [time-nuts] What's the latest correct PICTIC II Mouserproject?- Heathkid snip Maybe we should buy lots of diodes to match them, they are relative cheap, also use extra care installing them. Using hemostats as heat sinks and just enough heat for a good connection do not want to damage/change them after the match. Stanley ___ 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. attachment: Capture.JPG___ 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.
[time-nuts] Fw: What's the latest correct PICTIC II Mouserproject?- Heathkid
Duplicate message without in-line picture. - Forwarded Message From: Stanley Reynolds stanley_reyno...@yahoo.com To: Discussion of precise time and frequency measurement time-nuts@febo.com Sent: Sat, August 14, 2010 11:41:36 AM Subject: Re: [time-nuts] What's the latest correct PICTIC II Mouserproject?- Heathkid 1) I have no previous experience building precision anything, I'm not an expert. 2) My guess is the design expects quality components and depends on the auto calibration to correct any component drift. Short term stability between calibrations is what we want. The absolute value of C16 and C17 is not as important as it's stability in leakage and value. Guess we could put the didoes in a constant temp oven but not sure all the components are more stable at higher temps. Good ideas about didoes here : http://www.sciencebuddies.org/science-fair-projects/project_ideas/Elec_p033.shtml (note Figure 3 and how the didoes voltage drop is more linear at higher temps vs room temp.) Stanley From: Heathkid heath...@heathkid.com To: Discussion of precise time and frequency measurement time-nuts@febo.com Sent: Sat, August 14, 2010 10:43:15 AM Subject: Re: [time-nuts] What's the latest correct PICTIC II Mouserproject?- Heathkid Okay Stanley... I've got a Tektronix 370A curve tracer at work. So the diodes need to be matched? No problem. So I match the diodes and the resistors to within 0.001%. Are there any other components that need matched? Also, you mentioned using hemostats as heatsinks on the diodes while installing them. I know that diodes make very good temperature sensors as well. Are there any suggestions on keeping them stable after they are on the board? What is the recommended operating temperature of the PICTIC II? Thanks. 73 Brice KA8MAV - Original Message - From: Stanley Reynolds stanley_reyno...@yahoo.com To: Discussion of precise time and frequency measurement time-nuts@febo.com Sent: Saturday, August 14, 2010 10:43 AM Subject: Re: [time-nuts] What's the latest correct PICTIC II Mouserproject?- Heathkid snip Maybe we should buy lots of diodes to match them, they are relative cheap, also use extra care installing them. Using hemostats as heat sinks and just enough heat for a good connection do not want to damage/change them after the match. Stanley ___ 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. attachment: Capture.JPG___ 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.
[time-nuts] lost posts
My last two posts made it to the Archives at febo.com and I guess other members mail boxes, but not my in box or spam folder. Just wonder why as this doesn't seem to happen with time-nuts posts by others ? Is this a yahoo mail problem ? Stanley ___ 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.
[time-nuts] PicTic Data
Attached is my first pictic ii data. It is the difference between the PPS output of a Trak 8820 and a Odetics Comsync. Turned on the counter display at the end of the run to show that most of the data was the interpolars. Stanley 001073 001075 001072 001072 001066 001068 001066 001068 001063 001068 001065 001066 001067 001067 001071 001075 001074 001072 001075 001079 001078 001081 001080 001084 001087 001089 001090 001092 001090 001094 001096 001098 001099 001102 001106 001105 001112 001112 00 001117 001118 001118 001123 001128 001127 001130 001129 001121 001124 001118 001116 001114 001112 001108 001103 001102 001098 001096 001092 001090 001085 001084 001082 001078 001074 001073 001074 001074 001074 001071 001069 001066 001068 001068 001069 001062 001066 001065 001065 001065 001065 001061 001062 001065 001064 001062 001062 001063 001060 001059 001061 001062 001061 001058 001058 001059 001059 001059 001059 001057 001056 001056 001058 001057 001056 001056 001057 001055 001058 001058 001058 001059 001057 001057 001055 001058 001057 001057 001060 001064 001064 001067 001070 001067 001072 001073 001077 001079 001079 001081 001084 001089 001091 001092 001092 001093 001096 001098 001099 001100 001103 001099 001097 001094 001092 001091 001090 001087 001088 001089 001088 001089 001087 001086 001086 001082 001080 001082 001080 001081 001082 001084 001084 001089 001092 001091 001095 001096 001097 001102 001103 001103 001107 001106 001113 001112 001116 001119 001121 001124 001122 001125 001128 001130 001132 001135 001138 001139 001141 001145 001147 001148 001143 001137 001137 001134 001131 001131 001127 001124 001120 001118 00 001108 001109 001103 001102 001097 001096 001087 001087 001084 001082 001078 001079 001072 001071 001065 001062 001057 001053 001048 001046 001043 001041 001038 001035 001032 001032 001031 001031 001028 001029 001028 001028 001028 001024 001026 001024 001023 001025 001022 001022 001020 001021 001022 001019 001019 001022 001020 001020 001020 001021 001019 001022 001021 001017 001021 001019 001021 001018 001020 001018 001018 001016 001019 001020 001017 001016 001018 001015 001017 001017 001015 001016 001013 001017 001011 001015 001012 001011 001013 001008 001012 001010 001009 001014 001008 001008 001007 001007 001006 001007 001006 001003 001005 001003 001006 001003 001003 001002 001004 001000 000999 000997 000999 000998 000994 000993 000995 000998 000993 000991 000994 000993 000991 000988 000988 000992 000990 000985 000988 000990 000988 000988 000988 000987 000986 000986 000988 000986 000984 000983 000982 000983 000983 000982 000978 000980 000982 000979 000977 000978 000977 000976 000974 000975 000976 000974 000972 000970 000972 000973 000974 000974 000975 000971 000973 000974 000973 000974 000974 000972 000971 000972 000972 000971 000974 000971 000969 000968 000966 000966 000966 000968 000969 000965 000962 000964 000961 000964 000962 000958 000957 000960 000959 000957 000958 000957 000957 000957 000953 000950 000949 000950 000949
Re: [time-nuts] Alternative time interval interpolation technique
http://risorse.dei.polimi.it/digital/pubblications.html then scroll down Stanley - Original Message From: Bruce Griffiths bruce.griffi...@xtra.co.nz To: Discussion of precise time and frequency measurement time-nuts@febo.com Sent: Sat, August 14, 2010 7:05:03 PM Subject: [time-nuts] Alternative time interval interpolation technique A method that measures the phase of a damped LC circuit oscillatory transient triggered by the event to be timestamped: http://risorse.dei.polimi.it/digital/products/2010/High frequency,high time resolution time-to-digital converter employing passive resonating circuits.pdf http://risorse.dei.polimi.it/digital/products/2010/High%20frequency,high%20time%20resolution%20time-to-digital%20converter%20employing%20passive%20resonating%20circuits.pdf A dual of the circuit is readily devised using a CMOS gate plus an open drain (or equivalent) gate output for damping/quenching. However the ADC employed needs to be able to capture a sample burst at a relatively high sample rate. Bruce ___ 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. ___ 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.
[time-nuts] OT: leaching was, Alternative time interval interpolation technique
When they receive the request for the pdf they check to see what page referred the request if it wasn't their site then they assume some other web site leaching bandwidth. This other site pretends to serve the file but in fact it is still served by them. This pretend site doesn't pay for the bandwidth to serve the files, win for them lose for the unprotected server. Stanley - Original Message From: Bill Hawkins b...@iaxs.net To: Discussion of precise time and frequency measurement time-nuts@febo.com Sent: Sat, August 14, 2010 7:35:53 PM Subject: Re: [time-nuts] Alternative time interval interpolation technique Scroll to the bottom of the first list, or search for 'LC tanks' Don't know why Bruce's link doesn't work, but I get 404 - file not found. Bill Hawkins -Original Message- From: Stanley Reynolds http://risorse.dei.polimi.it/digital/pubblications.html then scroll down Stanley - Original Message From: Bruce Griffiths bruce.griffi...@xtra.co.nz A method that measures the phase of a damped LC circuit oscillatory transient triggered by the event to be timestamped: http://risorse.dei.polimi.it/digital/products/2010/High frequency,high time resolution time-to-digital converter employing passive resonating circuits.pdf http://risorse.dei.polimi.it/digital/products/2010/High%20frequency,high%20 time%20resolution%20time-to-digital%20converter%20employing%20passive%20reso nating%20circuits.pdf A dual of the circuit is readily devised using a CMOS gate plus an open drain (or equivalent) gate output for damping/quenching. However the ADC employed needs to be able to capture a sample burst at a relatively high sample rate. Bruce ___ 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. ___ 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] OT: leaching was, Alternative time interval interpolation technique
oh well no credit for me, but what happened to the missing space when so many other spaces made it thru as %20 ? - Original Message From: Hal Murray hmur...@megapathdsl.net To: Discussion of precise time and frequency measurement time-nuts@febo.com Sent: Sat, August 14, 2010 8:27:09 PM Subject: Re: [time-nuts] OT: leaching was, Alternative time interval interpolation technique stanley_reyno...@yahoo.com said: When they receive the request for the pdf they check to see what page referred the request if it wasn't their site then they assume some other web site leaching bandwidth. This other site pretends to serve the file but in fact it is still served by them. This pretend site doesn't pay for the bandwidth to serve the files, win for them lose for the unprotected server. Nice try, but that's not the problem this time. From the original message: bruce.griffi...@xtra.co.nz said: http://risorse.dei.polimi.it/digital/products/2010/High frequency,high time resolution time-to-digital converter employing passive resonating circuits.pdf http://risorse.dei.polimi.it/digital/products/2010/High%20frequency,high%20t ime%20resolution%20time-to-digital%20converter%20employing%20passive%20resona ting%20circuits.pdf The URL overflows a line and contains spaces. The second copy inside has %20 where the spaces go. You are supposed to remove the line breaks and put it back together. The problem is that there is a missing space between High frequency, and high time. -- These are my opinions, not necessarily my employer's. I hate spam. ___ 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. ___ 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] PicTic Data
My guess as to what the data may indicate is performance of the 10 Mhz 20PPM PICTIC internal oscillator, need to repeat test with precision 10Mhz and auto calibrate off. Fatness of the line/width maybe PICTIC error. Note graph seems to show me leaving the room and returning via the outside door. Not sure what the ~100 sec oscillations are, need to check a/c cycle time. Stanley ___ 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] PicTic Data
One problem is the door opens don't move in the same direction, a rain storm did cool things off outside during the test but it was still warmer outside both times. I will place a box over the Pictic and rerun the test. Stanley - Original Message From: Stanley Reynolds stanley_reyno...@yahoo.com To: Discussion of precise time and frequency measurement time-nuts@febo.com Sent: Sat, August 14, 2010 9:38:37 PM Subject: Re: [time-nuts] PicTic Data No, the board is not in a case. An annotated graph attached. I think the 100 sec oscillations are a vane that moves up and down on the a/c unit as this is washed out on the two door opens. - Original Message From: Bob Camp li...@rtty.us To: Discussion of precise time and frequency measurement time-nuts@febo.com Sent: Sat, August 14, 2010 9:18:44 PM Subject: Re: [time-nuts] PicTic Data Hi Is it shielded from drafts? Bob On Aug 14, 2010, at 10:12 PM, Stanley Reynolds stanley_reyno...@yahoo.com wrote: My guess as to what the data may indicate is performance of the 10 Mhz 20PPM PICTIC internal oscillator, need to repeat test with precision 10Mhz and auto calibrate off. Fatness of the line/width maybe PICTIC error. Note graph seems to show me leaving the room and returning via the outside door. Not sure what the ~100 sec oscillations are, need to check a/c cycle time. Stanley ___ 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. ___ 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. ___ 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] PicTic Data
Thanks for looking at my data that was what I was fishing for all along :-) I was looking at the article: A Small Dual Mixer Time Difference (DMTD) Clock Measuring System W.J. Riley Richard posted And thinking it would be nice to do the DSS and Mixer boards to go with the pictic II. Or changing the Pictic II to use the Acam TDC GP2 Time to Digital Converter; 2 channel w/65 ps resolution now under $30. as Bruce suggested a while back. My wants sure exceed my cans ;-) Stanley - Original Message From: John Miles jmi...@pop.net To: Discussion of precise time and frequency measurement time-nuts@febo.com Sent: Sat, August 14, 2010 11:25:44 PM Subject: Re: [time-nuts] PicTic Data John glad you are getting good results and have something to compare to. Back to me who doesn't have any knowns but lots of guessing. Attached is a run with a box cover over the pictic, run is shorter ~ 800 seconds but the box does look like it helps. I need to do a lot more testing but sometimes I just get excited :-) I imported your .txt file alongside the traces I captured. Assuming it was taken with 1 Hz on both START and STOP, it looks like the attached. You're getting the exact sort of results that I see if I feed both the START and STOP inputs at 1 Hz. My guess is that the onboard oscillator limits the performance in that case, since it has a lot of time to drift during the measurement if the two pulses occur close to 1 second apart. Even the 5370B looks much worse if driven with 1 Hz on both inputs than it does with 1 Hz at START and 10 MHz at STOP. So I think you're basically up and running OK. When I get around to trying a better clock, I'll also go back and see if the 1-pps x2 performance improves. It would be great if the next spin of the board could include sine-to-CMOS shapers for the input channels as well as an external clock input, for people who are working directly with RF signals as opposed to 1-pps. -- john, KE5FX - Original Message From: John Miles jmi...@pop.net To: Discussion of precise time and frequency measurement time-nuts@febo.com Sent: Sat, August 14, 2010 10:19:46 PM Subject: Re: [time-nuts] PicTic Data A few preliminary measurements here (I'm working on getting some software support together): http://www.ke5fx.com/pictic.htm -- john, KE5FX -Original Message- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com]on Behalf Of Stanley Reynolds Sent: Saturday, August 14, 2010 7:12 PM To: Discussion of precise time and frequency measurement Subject: Re: [time-nuts] PicTic Data My guess as to what the data may indicate is performance of the 10 Mhz 20PPM PICTIC internal oscillator, need to repeat test with precision 10Mhz and auto calibrate off. Fatness of the line/width maybe PICTIC error. Note graph seems to show me leaving the room and returning via the outside door. Not sure what the ~100 sec oscillations are, need to check a/c cycle time. Stanley ___ 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. ___ 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. ___ 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] PicTic Data
Yes don't think the box did do much. I do have two different dividers here I just need too finish the projects I have. Thanks again, Stanley - Original Message From: John Miles jmi...@pop.net To: Discussion of precise time and frequency measurement time-nuts@febo.com Sent: Sat, August 14, 2010 11:46:49 PM Subject: Re: [time-nuts] PicTic Data Here's your first run in red, compared to your second one in green... -- john, KE5FX -Original Message- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com]on Behalf Of Stanley Reynolds Sent: Saturday, August 14, 2010 3:28 PM To: time-nuts@febo.com Subject: [time-nuts] PicTic Data Attached is my first pictic ii data. It is the difference between the PPS output of a Trak 8820 and a Odetics Comsync. Turned on the counter display at the end of the run to show that most of the data was the interpolars. Stanley ___ 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] Remove Pictic boards from envelopes
From: Alan Melia alan.me...@btinternet.com To: Discussion of precise time and frequency measurement time-nuts@febo.com Sent: Tue, August 10, 2010 6:01:59 AM Subject: Re: [time-nuts] Remove Pictic boards from envelopes Could there maybe be a thin flux coating over the pads which is cause the disquiet? Alan G3NYK snip The boards had a uniform silver finish except for the green solder mask. I'm sure I would have noticed any brown tint while packing them. The brown tint must have occured in shipment. Sorry the choice of packing was my mistake and will be glad to make good anyone who needs replacment please email me off list. Stanley Stanley snip ___ 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] No Comment
Stanley time would have 10 seconds per minute, 10 minutes per hour, 10 hours per day ... No need for leap seconds if we remove all connections to celestial movements. To avoid any politics's in picking a starting point now would be zero and the past measured as negative time. From: Steve Rooke sar10...@gmail.com To: Discussion of precise time and frequency measurement time-nuts@febo.com Sent: Tue, August 10, 2010 8:25:37 PM Subject: Re: [time-nuts] No Comment No boss, I'm not late, I was going by Mecca Time :) Steve On 11/08/2010, Tom Holmes thol...@woh.rr.com wrote: Don... Some days, so do I :-). Tom N8ZM -Original Message- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of Don Latham Sent: Tuesday, August 10, 2010 5:49 PM To: Discussion of precise time and frequency measurement Subject: Re: [time-nuts] No Comment Thing is, Islamic time stops 5 times a day... Don Tom Holmes The reality of this, hoping not to deteriorate the discussion into politics, is that outside of the scientific community, the greater mass of the population might be easily swayed to go along with the idea of moving to a different time standard. After all, most of the planet's populace has no clue about the need for standard time, or its history, and is likely to see the change as 'good'. And those who follow Islam will certainly not object, and they are a significant force on this planet. You have all seen instances where voters have defied logic and good sense to 'fix' a problem they could not be bothered to truly understand, so just voted on gut or heart or whatever their favorite talking head told them. So laugh or be skeptical, but be aware that there is enough power to make such a thing happen if properly sold. On the other hand, does it really matter? We have put up with the farce that is Daylight Saving Time for years. Tom, N8ZM -Original Message- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of J. Forster Sent: Tuesday, August 10, 2010 4:42 PM To: Discussion of precise time and frequency measurement Subject: [time-nuts] No Comment http://www.google.com/hostednews/afp/article/ALeqM5hghTFlnZ0yYigLDaCnQT8 xowHaJA -John == ___ 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. ___ 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. -- Neither the voice of authority nor the weight of reason and argument are as significant as experiment, for thence comes quiet to the mind. R. Bacon Dr. Don Latham AJ7LL Six Mile Systems LLP 17850 Six Mile Road POB 134 Huson, MT, 59846 VOX 406-626-4304 www.lightningforensics.com www.sixmilesystems.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. ___ 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. -- Steve Rooke - ZL3TUV G8KVD The only reason for time is so that everything doesn't happen at once. - Einstein ___ 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. ___ 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.
[time-nuts] Remove Pictic boards from envelopes
Please remove Pictic boards from envelopes when you receive them. Received a report that the tinning on the bottom of the board was discolored perhaps due to some contamination in the envelope. Will wrap boards in plastic wrap in the future. Stanley Let me see first it was : Melamine in pet food Bad dry wall making people sick Now Bad envelopes ___ 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] Remove Pictic boards from envelopes
The boards were PB free so the finish is a flat silver . My thinking is the envelopes are acidic and any moisture would cause a reaction. The boards were shipped to me vacuum sealed in plastic 25 boards per pack. They were not brown or discolored when I put them in the envelopes so what ever caused them to discolor happened while they were in transit. Stanley From: gandal...@aol.com gandal...@aol.com To: time-nuts@febo.com Sent: Fri, August 6, 2010 10:23:02 AM Subject: Re: [time-nuts] Remove Pictic boards from envelopes In a message dated 06/08/2010 16:15:40 GMT Daylight Time, ed_pal...@sasktel.net writes: You mean they are tinned? I received my two boards a couple of days ago. I thought that they missed the tinning solution. There's just an occasional splash of bright tin here and there, particularly on the back. The rest looks like oxidized copper. I haven't tried to solder them yet. Hope the rosin cuts through it. - That's what I first thought when mine arrived but found that rubbing with a soft pencil eraser removed the discolouration to leave them looking tinned again. I did notice that some of the non discoloured tinning had a matt finish rather than shiny as expected so not sure if this was envelope contamination or a processing issue. After buffing with the eraser I washed the boards in warm soapy water just to be sure and they continue to look ok. 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. ___ 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] 74AC175PC
Yes, I can but it will be toward the end of the week before I can ship them as they are in a different location. I'm still shipping boards as they are with me. If anyone wants the chips please email me off list or paypal me at stanley_reyno...@yahoo.com . I also have all the other parts but will keep shipping boards as my first priority. I have some 10Mhz 20PPM osc and a 80Mhz 100PPM osc. The 80Mhz I think they would be good for calibration of interlopers but not measuring. I can program the Pic chips and test them in my board. Do not expect parts orders to be filled fast till I see what demand is like. I would like to remind everyone that this design was a free gift to time nuts by Richard McCorkle. My only connection is to provide the boards at low cost, some emails to me indicate some confusion that I'm more connected than I am. Others on the list have provided help with the boards and advice to me on my projects so I will try to help all complete this project. Stanley From: Heathkid heath...@heathkid.com To: Discussion of precise time and frequency measurement time-nuts@febo.com Sent: Mon, August 2, 2010 1:03:19 AM Subject: Re: [time-nuts] 74AC175PC Stanley, Would you be willing to do another group buy? I'll send you enough $ for 10 of them via PayPal before you buy and I know others are already willing to buy more. I just can't logistically do a group buy myself right now but would be willing to help pay for your time and efforts. I know what they are in quantities of 50. I'll pay $2 each. That should make it worth while... with fees, etc... I'll send you $25 for 10 of them. Will you do this? 73 Brice KA8MAV - Original Message - From: Stanley Reynolds stanley_reyno...@yahoo.com To: Discussion of precise time and frequency measurement time-nuts@febo.com Sent: Sunday, August 01, 2010 8:13 PM Subject: Re: [time-nuts] 74AC175PC I have had good luck with Quest they are showing stock. www.questcomp.com They do have a $25 min. Stanley - Original Message From: Bob Camp li...@rtty.us To: Discussion of precise time and frequency measurement time-nuts@febo.com Sent: Sun, August 1, 2010 4:20:44 PM Subject: Re: [time-nuts] 74AC175PC Hi At least at this point the surplus dealer has been checked out by others buying the parts from him. You might find there's enough interest to make another buy worthwhile. Bob On Aug 1, 2010, at 4:59 PM, Heathkid wrote: Hello. Does anyone have any of these left? I've checked with a couple of the guys that did a group buy but they are out of them. I'd prefer not to do SMT and don't really want to buy 50+ from an unknown surplus seller. I need six (6) - or at least one or whatever someone has to get me started. Thanks! 73 Brice KA8MAV ___ 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. ___ 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. ___ 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. ___ 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. ___ 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] 74AC175PC
I have had good luck with Quest they are showing stock. www.questcomp.com They do have a $25 min. Stanley - Original Message From: Bob Camp li...@rtty.us To: Discussion of precise time and frequency measurement time-nuts@febo.com Sent: Sun, August 1, 2010 4:20:44 PM Subject: Re: [time-nuts] 74AC175PC Hi At least at this point the surplus dealer has been checked out by others buying the parts from him. You might find there's enough interest to make another buy worthwhile. Bob On Aug 1, 2010, at 4:59 PM, Heathkid wrote: Hello. Does anyone have any of these left? I've checked with a couple of the guys that did a group buy but they are out of them. I'd prefer not to do SMT and don't really want to buy 50+ from an unknown surplus seller. I need six (6) - or at least one or whatever someone has to get me started. Thanks! 73 Brice KA8MAV ___ 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. ___ 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. ___ 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] Updated Shera controller
- Original Message From: Hal Murray hmur...@megapathdsl.net To: Discussion of precise time and frequency measurement time-nuts@febo.com Sent: Thu, July 29, 2010 12:48:55 AM Subject: Re: [time-nuts] Updated Shera controller stanley_reyno...@yahoo.com said: Full circle back to the software, the number of units sold, the cost per hour and time to complete project would determine the software cost. Would not surprise me if the software would be the biggest expense till you break the 1000 unit mark unless the cost per hour was very low. As a hardware guy at heart it is hard for me to assign a cost/value to software ;-) That line of thinking is probably appropriate for a commercial project. For a hobby/volunteer project, software can be free. Consider Lady Heather as an example. In this context, there are two types of software. There is the software you run on the board you build. There is also the software you use to develop the software you run. I'm assuming a volunteer would write the software just like volunteers have designed boards. snip Some with well stocked junk boxes could argue the hardware was below market cost as well. But my point was the software was much more of a factor than the hardware if we assign value to each part. Yes Lady Heather is free to many but not all, the author and others would be rich if paid a fair price for their work. Thank you time-nuts for your time. Stanley ___ 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] Please send your paypal for PicTic II PCBs
My paypal account is stanley_reyno...@yahoo.com boards are 9.50 usd each which includes shipping Stanley - Original Message From: bell@comcast.net bell@comcast.net To: Discussion of precise time and frequency measurement time-nuts@febo.com Sent: Thu, July 29, 2010 12:24:39 PM Subject: Re: [time-nuts] Please send your paypal for PicTic II PCBs Hi Stan, Please tell me how to pay you through Paypal. What is your Paypal account name? As soon as I get it I would be happy to pay you. Sincere thanks, David - Original Message - From: Henk h...@deriesp.demon.nl To: Discussion of precise time and frequency measurement time-nuts@febo.com Sent: Thursday, July 29, 2010 8:11:46 AM Subject: Re: [time-nuts] Please send your paypal for PicTic II PCBs Op 22 jul 2010, om 16:37 heeft Stanley Reynolds het volgende geschreven: Just tried to invoice the ones not paid yet but paypal doesn't allow enough time for me to complete the invoice and thinks it is OK to dump my work up to that point, note to self sell ebay stock short and use money to hire someone to do paperwork. The people in the EU / UK I wanted to ship at the same time to save on shipping but not delay the ones who have paid. No hurry for other locations as they can be shipped one at a time. Stanley ___ 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. ___ 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. ___ 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. ___ 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] Updated Shera controller
Full circle back to the software, the number of units sold, the cost per hour and time to complete project would determine the software cost. Would not surprise me if the software would be the biggest expense till you break the 1000 unit mark unless the cost per hour was very low. As a hardware guy at heart it is hard for me to assign a cost/value to software ;-) Stanley - Original Message From: ewkeh...@aol.com ewkeh...@aol.com To: time-nuts@febo.com Sent: Wed, July 28, 2010 4:08:25 PM Subject: Re: [time-nuts] Updated Shera controller One more comment $ 40 would cover every thing including PC board, May go up to 50 depending what D/A you use. Bert In a message dated 7/28/2010 4:47:46 P.M. Eastern Daylight Time, p...@phk.freebsd.dk writes: In message 4c5092fa.2030...@xtra.co.nz, Bruce Griffiths writes: Instead of copying the Shera controller albeit with higher resolution its probably more cost effective to choose a microprocessor with built in time stamping capability. Uhm, isn't this exactly where you want to use the still-smelling-like-brand-new-car PICTIC II with a good DAC and a microcontroller ? -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 p...@freebsd.org | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe Never attribute to malice what can adequately be explained by incompetence. ___ 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. ___ 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. ___ 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.
[time-nuts] Pictic assembled pictures
Here: www.n4iqt.com/picticii/assembled I think it would be possible to use the side adjust square trimmers but not the rectangular ones as they are too big and the holes would be too far apart to mount them close to the board. The top adjust would be the first choice because they would be easier adjust especially if board is mounted in a case. Stanley ___ 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.
[time-nuts] Minor correction in Pictic II parts list
R25 a 10 K resistor only used with the TTL computer interface option, not used with the RS232 chip, is listed twice as 1% or 5% either will work but you don't need both. Stanley ___ 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] Basic question regarding comparing two frequencies
My attempt to understand your diagram, not sure about how the quadrature hybrid is connected. Stanley - Original Message From: J. Forster j...@quik.com To: Discussion of precise time and frequency measurement time-nuts@febo.com Sent: Sun, July 25, 2010 10:29:23 AM Subject: Re: [time-nuts] Basic question regarding comparing two frequencies There is a cute way to use a scope. It requires a power splittere, a quadrature hybrid, and two mixers (all appropriate for the frequencies you are comparing), and an X-Y scope. Mini-Circuits sells appropriate parts. The stuff is hooked up like this: X Axis S | H P MIX Y REF 1--L B -- REF2 I MIX R T | I Y Axis D The 'scope display will be roughly a circle if the frequencies are a bit different and the spot will go around CW or CCW depending on which Ref is higher. -John snipattachment: Jfoster.jpg___ 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] Basic question regarding comparing two frequencies
Corrected Drawing.attachment: Jfoster.jpg___ 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.
[time-nuts] Please send your paypal for PicTic II PCBs
Just tried to invoice the ones not paid yet but paypal doesn't allow enough time for me to complete the invoice and thinks it is OK to dump my work up to that point, note to self sell ebay stock short and use money to hire someone to do paperwork. The people in the EU / UK I wanted to ship at the same time to save on shipping but not delay the ones who have paid. No hurry for other locations as they can be shipped one at a time. Stanley ___ 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] Pictic II boards are here !
Peter, Thank you for offering to help, don't send paypal yet, I will send you the boards then after we know your postal expense then we can do the paypal thing. Stanley - Original Message From: Peter Vince pvi...@theiet.org To: Discussion of precise time and frequency measurement time-nuts@febo.com Sent: Wed, July 21, 2010 3:39:54 AM Subject: Re: [time-nuts] Pictic II boards are here ! Morning Stanley, Good news! As I mentioned before, I am happy to act as a UK Post Office if youl'd like to send all the UK-bound boards to me. I am collaborating with Ian Muir in Wales (Time Nut member Gonzo) on this project, so between us we would like five boards please. If you can let me know the final cost, including postage over the big pond, I'll get PayPal to do their thing. Can you please tell me what size the boards are, then I can get some appropriate padded bags for onward despatch. TTFN, Peter Vince (England) On 20 July 2010 23:08, Stanley Reynolds stanley_reyno...@yahoo.com wrote: Paypal to stanley_reyno...@yahoo.com . Yes I still have extra boards. Stanley ___ 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. ___ 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] surface mount (was PICTIC II Parts from Mouser)
Bob, Thank you for the video Now all we need is a robot and software to filter the jitter from my hands. Maybe a little less expensive than the da Vinci robot. http://www.davincisurgery.com/ Stanley - Original Message From: Bob Bownes bow...@gmail.com To: Discussion of precise time and frequency measurement time-nuts@febo.com Sent: Mon, July 19, 2010 11:09:50 PM Subject: Re: [time-nuts] surface mount (was PICTIC II Parts from Mouser) A few short videos shot with the camera/usb video capture setup I mentioned earlier: http://www.fastbobs.com/bob/radio/video1.mpg Video 1 - Black White inspection of a prototype power sensor. Low magnification http://www.fastbobs.com/bob/radio/video2.mpg Video 2 - Colour inspection of same sensor. Same magnification. About 2-3x http://www.fastbobs.com/bob/radio/video3.mpg Video 3 - Longer version of #2. Note lighting changes in 2nd half. http://www.fastbobs.com/bob/radio/video4.mpg Video 4 - Short, color, higher magnification http://www.fastbobs.com/bob/radio/video5.mpg Video 5 - Longest, highest magnification. Same probe as earlier shots. Note lighting changes as the light source is moved around showing shadows. On Mon, Jul 19, 2010 at 9:22 PM, Robert J Marinelli b...@stanford.edu wrote: Hi Richard, Yes, used to feel that way - until acquiring a surplus dissecting (stereo) microscope, now I actually *prefer* surface mount. Much easier to move parts around, it's easy to apply paste solder entire boards in a $50 toaster oven, and access to all the latest parts. Hard to believe, but really is easier once you can clearly see. For some nice tuturials, see the sparkfun website, also the schmartboard website. Also, when I lay out surface mount boards, they tend to be smaller overall, and so a bit lower cost. Please do try with a low cost stereo microscope - it changes everything :) -Bob p.s. Finger size is no issue - tweezers work nicely. Oh and surface mount resistors caps are unbelievably low cost in cut tape, and super easy to handle that way. Much better than loose parts IMO. On Jul 19, 2010, at 4:59 PM, Richard H McCorkle wrote: The TS272CN is an acceptable substitute for the TS272ACN in the PICTIC II but as noted has a higher input offset voltage. This can be compensated for in the second stage by adjustment of the offset trimmer. I selected premium parts for temperature stability in the application. Sorry the manufacturers are making human compatible devices obsolete and only carrying over surface mount devices as they go Pb free for the EU market. Makes it difficult to keep up with what's available and harder for amateurs with fat fingers and poor eyesight like myself to build simple projects! Richard Here we go again! The TS272ACN has just gone 'non-stocked' at Mouser. Will the TS272CN degrade the performance? It looks like the difference between the two is the TS272CN has a higher input offset voltage. Ed ___ 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. ___ 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. ___ 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. ___ 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. ___ 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.
[time-nuts] Pictic II boards are here !
Paypal to stanley_reyno...@yahoo.com . Yes I still have extra boards. Stanley ___ 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] Pictic II boards are here !
Picture of board here: www.n4iqt.com/stanley_reynolds/picticii/Picticboard001.JPG - Original Message From: Stanley Reynolds stanley_reyno...@yahoo.com To: time-nuts@febo.com Sent: Tue, July 20, 2010 5:08:22 PM Subject: [time-nuts] Pictic II boards are here ! Paypal to stanley_reyno...@yahoo.com . Yes I still have extra boards. Stanley ___ 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. ___ 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] Pictic II boards are here !
Corrected link to picture: www.n4iqt.com/picticii/Picticboard001.JPG - Original Message From: Stanley Reynolds stanley_reyno...@yahoo.com To: Discussion of precise time and frequency measurement time-nuts@febo.com Sent: Tue, July 20, 2010 5:26:44 PM Subject: Re: [time-nuts] Pictic II boards are here ! Picture of board here: www.n4iqt.com/stanley_reynolds/picticii/Picticboard001.JPG - Original Message From: Stanley Reynolds stanley_reyno...@yahoo.com To: time-nuts@febo.com Sent: Tue, July 20, 2010 5:08:22 PM Subject: [time-nuts] Pictic II boards are here ! Paypal to stanley_reyno...@yahoo.com . Yes I still have extra boards. Stanley ___ 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. ___ 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. ___ 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] Did my Tbolt die ?
Adam, Cold solder joints on the connector or chip would be my first guess after the power supply was checked. Stanley - Original Message From: Adam Feigin a...@iis.ee.ethz.ch To: time-nuts@febo.com Sent: Sun, July 18, 2010 3:53:36 AM Subject: Re: [time-nuts] Did my Tbolt die ? Well, I wish it were all that simple. I was originally running the Tbolt with tboltd under Linux to provide data to one of my ntp servers, on a real(tm) serial port. Sometime after a reboot (or maybe during ??) it just stopped working, at least the serial portion. I've tried a bunch of different machines, including attaching the thing to a Moxa Serial device server, and i dont get anything out at all. I've let it sit overnight, power cycling, tried different machines, (VirtualBox, Wine with USB serial and direct serial) all to no avail. It simply gives no output at all. Oh well, I suppose it was good while it lasted. I'm off over to the pond for holiday, so maybe I'll get lucky and it will get happy after I get back, otherwise I'll have to rip it apart and attempt to figure out whats wrong -- probably just the serial chip blown somehow. Date: Sat, 17 Jul 2010 08:40:23 -0400 From: Stan, W1LE stanw...@verizon.net Subject: Re: [time-nuts] Did my Tbolt die ? Hello Adam, I suspect that: Upon rebooting, the OS came up and did not recognize the (serial) COM port assignment you had used before. Check the COM port assignments in the control panel, and adjust accordingly, to match the actual COM port you are using Looks like the TB is good, I suspect the PC end. Stan, W1LE ___ 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. ___ 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.
[time-nuts] 74AC logic differences between manufactures
Learning about the differences between families now know why a 74F is not a substitute for 74AC. But remembering something I read in Brooks Shera, W5OJM GPSDO notes Take care about which 4046 chips you use for U1 and U3. The Phillips 74HCT4046 chips (formerly sold by Radio Shack) are fine. So are CD74HC4046 chips made by Harris or T.I. Do not use chips made by Fairchild and do not use CD4046 chips; both have a different design and will not work in this circuit. Does anyone know about any differences in Fairchild and National Semiconductor 74AC175PC ? Stanley ___ 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] PIC-TIC boards
Claude, No problem you are on the list, the 74AC175PC is correct chip, not 74ACT175PC. Stanley - Original Message From: Claude Houde va2...@aei.ca To: time-nuts@febo.com Sent: Tue, July 13, 2010 8:15:25 PM Subject: [time-nuts] PIC-TIC boards Hello ! I know I'm a bit late, but is it still possible to order three boards, and have shipped to Canada ? I can program my own PIC's and have access to 74ACT175. Also, I would be willing to program chips for other Time Nuts if it can help someone. Thanks ! Claude ___ 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. ___ 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] 74AC175PC availability
I found them yesterday, and they show my order shipped today, let you know when I receive it. Stanley - Original Message From: Peter Vince pvi...@theiet.org To: Discussion of precise time and frequency measurement time-nuts@febo.com Sent: Mon, July 12, 2010 2:30:14 PM Subject: [time-nuts] 74AC175PC availability Previous commentators have reported a shortage of this part, but a quick Google brought up Quest Components in Industry, California, who supposedly have over 2000 in stock (http://tinyurl.com/2wxk6lh). I've not tried ordering from them as I'm on the other side of the Atlantic, perhaps a member living a bit closer could try and report any success. Peter ___ 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. ___ 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] 74AC175PC availability
A order with BIGeSTOCK.com did not work out last week, I think some of these people don't stock but re-list others stock. In this case they came back with a price 5 times what they said when I ordered. Stanley - Original Message From: Stanley Reynolds stanley_reyno...@yahoo.com To: Discussion of precise time and frequency measurement time-nuts@febo.com Sent: Mon, July 12, 2010 2:54:39 PM Subject: Re: [time-nuts] 74AC175PC availability I found them yesterday, and they show my order shipped today, let you know when I receive it. Stanley - Original Message From: Peter Vince pvi...@theiet.org To: Discussion of precise time and frequency measurement time-nuts@febo.com Sent: Mon, July 12, 2010 2:30:14 PM Subject: [time-nuts] 74AC175PC availability Previous commentators have reported a shortage of this part, but a quick Google brought up Quest Components in Industry, California, who supposedly have over 2000 in stock (http://tinyurl.com/2wxk6lh). I've not tried ordering from them as I'm on the other side of the Atlantic, perhaps a member living a bit closer could try and report any success. Peter ___ 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. ___ 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. ___ 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] Rubidium oscillator controlled clock
Very Nice, but way too neat, tell me you cleaned up for the pictures. Stanley - Original Message From: ulm...@vaxman.de ulm...@vaxman.de To: TIME-NUTS@febo.com Sent: Sun, July 11, 2010 2:40:01 PM Subject: [time-nuts] Rubidium oscillator controlled clock Dear list members - a couple of weeks ago I found the time-nuts mailing list and had a wonderful time reading through old posts as well as having a look at the web pages of some of its participants. This triggered a long desire of mine to have some kind of a homebrew atomic clock - not necessarily based on a cesium primary standard, but maybe something built around a cheaper rubidium oscillator. Since I was lucky to find an EFRATOM LPRO-101 for a quite reasonable price, I decided to build my own frequency standard and clock around this. I am sure this does not (yet? :-) ) qualify me as a time nut, but maybe you will like my contraption which is described at http://www.vaxman.de/projects/rb_clock/ Best regards - sincerely, Bernd. :-) ___ 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. ___ 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.
[time-nuts] PICTIC Backend
A terminal emulator like PuTTY is a good starting point to talk to PICTIC. But I was thinking of a GUI that would appear like a virtual instrument. Buttons instead of the @ commands, display of various settings and data. My language of choice is Basic looking at Just Basic now. Wonder if anyone else is thinking about this ? Stanley ___ 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.
