Re: [time-nuts] Question about frequency counter testing

It appears that I replied to the wrong message, please ignore. Glenn On 5/27/2018 11:52 AM, Oleg Skydan wrote: Hi! From: "Magnus Danielson" You build two sums C and D, one is the phase-samples and the other is phase-samples scaled with their index n in the block. From this you

Re: [time-nuts] Question about frequency counter testing

The MSDS is here: https://simplegreen.com/data-sheets/ They claim that it is non reactive and chemically stable. It is for water tolerant surfaces and should be rinsed. Probably due to the citric acid. Glenn On 5/27/2018 11:52 AM, Oleg Skydan wrote: Hi! From: "Magnus Danielson"

Re: [time-nuts] Weird Stuff WareHouse shutting down

display is what is really out there. There is a reason that usable SAs have weight to them and USB devices do not. Glenn On 4/8/2018 6:58 PM, Andy ZL3AG via time-nuts wrote: On 9/04/2018, at 3:52 AM, jimlux wrote: Test equipment tends to be aged - Unless you have a particular need for a HP

Re: [time-nuts] TV Signals as a frequency reference

small oven. I would not rely on a signal from a tv station as a time or frequency standard unless you know how their timing and frequency is derived. 73 Glenn WB4UIV On 3/31/2018 9:38 AM, Bob kb8tq wrote: Hi My comments really were a bit brief…. indeed there *are* clocks in the modern

Re: [time-nuts] Symmetricom S200 PSU

d see what happens. Any and all parts are suspect, some more than others. To me, it would be physically damaged parts, electrolytic capacitors, opto-isolators, solid state devices then other parts. 73 Glenn On 10/1/2017 12:26 PM, Lists via time-nuts wrote: Thanks for the reply Clint. I spent

[time-nuts] Bulova crystal oscillator

implies, to me, that the accuracy is in the realm of 0.001 Hertz at 100 KHz. Did I miss something here? The top also shows this to be a "Generator Reference Signal". Any insite appreciated. 73 Glenn WB4UIV -- --- Gl

Re: [time-nuts] GPS Antenna Feed Line Decision

ot; had in mind with the adapters. Low bidder for the antenna?? 73 Glenn WB4UIV On 9/3/2017 10:09 AM, Wes wrote: On 9/2/2017 4:48 PM, Clay Autery wrote: Thanks for the response... Not sure why you and the other guy both recommended RG-6 75-Ohm cable and F-connectors, when the nominal im

Re: [time-nuts] Austron/ Systrom Donner 8181 Time Code Reader

iginal calculations. 73 Glenn On 4/23/2017 2:31 PM, Dave Wood wrote: Bill, actually what happened is the zener diode that the resistor fed shorted and that's the reason it burned up. I have two units with this issue and I cannot read the resistor value since it burned up. What I would l

Re: [time-nuts] HP 5275A

show this this transistor and a similar one with the integral heatsink. Glenn On 11/6/2016 5:46 PM, djl wrote: Just homemade opto-isolators. Used in choppers, too. The transistor was indeed bonded to the heatsink. Just replace the whole thing with a 3-legged regulator? or simply a modern PNP t

Re: [time-nuts] ke5fx.com - something's up

Try the wayback machine: <https://web.archive.org/web/20160315065343/http://www.ke5fx.com/> This is an archive of many websites. 73 Glenn WB4UIV On 9/10/2016 6:48 PM, Nick Sayer via time-nuts wrote: I tried to look for Lady Heather docs today, but it appears like the ke5fx domain is…

Re: [time-nuts] GPS? Antenna

Thanks for all of the help. I contacted Huber Suhner and now have the data sheet and radiation patterns for this antenna. 73 Glenn WB4UIV On 9/6/2016 4:25 AM, Szeker K. wrote: Yes its H-S model, and it must be a GPS antenna... http://www.cafr.ebay.ca/itm/Ericsson-KRE-1012082-1-GPS-Antenna

[time-nuts] Datum TS2100 GPS issues

Is there a fix for the rollover problem for this instrument short of replacing the receiver? In searching the archives, this is the only solution that I see. Thanks 73 Glenn WB4UIV -- --- Glenn LittleARRL

[time-nuts] GPS? Antenna

required. I would suspect that it would be either 5VDC or 3.3 VDC based on the date. Any help appreciated. Thanks 73 Glenn WB4UIV -- --- Glenn LittleARRL Technical Specialist QCWA LM 28417 Amateur Callsign

Re: [time-nuts] GPS antenna selection - lightning

Glenn WB4UIV On 8/6/2016 1:13 PM, Chris Albertson wrote: If you are looking for info in lightening. University of Florida has a huge collection and also points to many other places on the web. They actually do testing there, lightening occurs so reliably almost every day in summer. Their test

Re: [time-nuts] GPS antenna selection - lightning

Cone of protection is addressed. Volume 1 is theory, volume 2 is application. The military requires 1/0 cable exterior to the building, commercial practice is #2AWG. Ground rod spacing is address. Overall a very good reference based on practical experience and backed with theory. 73 Glenn

Re: [time-nuts] GPS antenna selection — lightning

time that their tower was struck, destroying all of the lights and attached equipment, they followed my recommendations. That was ten years ago. The three hits were within four months of each other. The site has been free of destructive hits since then. 73 Glenn WB4UIV On 8/5/2016 10:37 AM

Re: [time-nuts] Q/noise of Earth as an oscillator

ccept that the day is 24 hours long, this would be for a earth rotational speed of 15.0 degrees per hour. I am not a mathematician, but, I dis do electronic navigation on submarines. 73 Glenn WB4UIV On 8/1/2016 10:54 AM, Tom Van Baak wrote: Hi Jim. You said: "you need energy; you n

Re: [time-nuts] Need - PRS10 magic smoke

) by a spike above the allowed for safety margin. An aluminum electrolytic will absorb the spike, the Tantalum might short. You should be able to recover the PRS10. 73 Glenn WB4UIV On 6/13/2016 6:32 PM, Skip Withrow wrote: Hello time-nuts, Well, broke out a PRS10 that I had put away for a

Re: [time-nuts] When does NIST change to DST?

from GMT. My buddy, Google, found the data WWVB transmits here: http://www.nist.gov/pml/div688/grp40/wwvbtimecode.cfm Hope this helps 73 Glenn WB4UIV On 3/13/2016 10:21 PM, Andy wrote: I wonder if WWVB switches to DST around 0200Z, maybe? Since it can't tell where your local zone is.

Re: [time-nuts] HP 10544A Repair

was a similar ovenized precision oscillator. YMMV 73 Glenn WB4UIV On 2/28/2016 8:10 PM, Bob Camp wrote: Hi Except …. The big steps give you more “thermal shock” on a BT and that slows things down. Bob On Feb 28, 2016, at 7:28 PM, Richard (Rick) Karlquist wrote: On 2/28/2016 7:01 AM

[time-nuts] Reference OCXO

What would a shock mounted 10.08 MHz OCXO be user for? Just another nonstandard reference? Thanks 73 Glenn --- Glenn LittleARRL Technical Specialist QCWA LM 28417 Amateur Callsign: WB4UIVwb4

Re: [time-nuts] RG 6 U couplings

, These connectors can be mated 50 to 75 Ohm with out damage. Just to warn of the possible damage. 73 Glenn WB4UIV On 12/6/2015 10:16 AM, David J Taylor wrote: David, You obviously is not working with 75 Ohm N-connectors on a regular basis. Also, the point was to show that using proper

Re: [time-nuts] Time syncing WiFi routers using FM radio

. 73 Glenn On 11/12/2015 2:17 PM, Hal Murray wrote: And the decade before that the hp house standard looked like this: Has anybody made a graph of the accuracy of house standards over time? I'm looking for something like Moore&

[time-nuts] WWVB format

Are there any "atomic" clocks that do not properly decode the current WWVB format. I have two that will not auto update the time and will troubleshoot if this is not a format issue. Thanks for any help. 73 Glenn WB4UIV ___ time-nuts ma

Re: [time-nuts] Oscillator help

Thanks for the tip. This is the reply: "That part number is not in my system which would put it's discontinuation prior to the Epson/Toyocom merger. We do not have that information available." Another lot of data lost due to a merger! Glenn At 01:54 PM 6/4/2014, you wrote

[time-nuts] Oscillator help

would guess that it is temperature controlled. A search shows nothing for this part number. Does anyone have any further information on his oscillator as to stability, accuracy or similar? Thanks Glenn WB4UIV ___ time-nuts mailing list -- time-nuts

[time-nuts] LORAN

I have some parts of LORAN receivers. There is a rumor that LORAN will be reactivated. IS there any truth to this rumor? Trying to clean up and recycle the stuff that cannot be used. Thanks 73 Glenn WB4UIV ___ time-nuts mailing list -- time-nuts

[time-nuts] Trak Systems

I have a Trak Systems time code generator/reader. This is model number 8396-2. I am looking for a service manual so that I can hook this up to display time code. An email to Trak Systems does not get an answer. Can any one help with any information on this unit?? Thanks 73 Glenn WB4UIV

Re: [time-nuts] Z3816A Control and Cleaning

Tektronix used to clean their oscilloscopes in a soap and water bath in something like a dish washer. This was published in Tek Scope V4 #4 July 1972. I can send the pdf if interested. Glenn WB4UIV At 10:13 PM 1/23/2014, you wrote: Joe Been a while. Sounds like a reasonable approach with the

Re: [time-nuts] Measuring TV delays

coding and decoding times would make this less accurate than time derived from other available sources. 73 Glenn WB4UIV At 08:24 AM 1/3/2014, you wrote: On 03/01/14 10:04, David J Taylor wrote: From: Chris Albertson When they broadcast "live" TV like from a sports vent I won

Re: [time-nuts] Measuring TV delays

delays. It would be possible to decode this and display the same data at a remote receiver, it was not stripped from the broadcast signal. 73 Glenn WB4UIV At 12:55 PM 1/2/2014, you wrote: On Thu, Jan 2, 2014 at 11:10 AM, Gregory Muir wrote: > Reading all of this brings back memories o

Re: [time-nuts] Measuring TV delays

faster. The more channels in the cable system, the longer the latency. 73 Glenn WB4UIV At 08:31 AM 1/2/2014, you wrote: Cable here had about a 10 second latency. HNY - Mike Mike B. Feher, EOZ Inc. 89 Arnold Blvd. Howell, NJ, 07731 732-886-5960 office 908-902-3831 cell

Re: [time-nuts] The Best way to Mark the New Year...

compensate correctly for the difference in network displayed time and true local time. Just a little incite into some of the delays and variables involved. 73 Glenn WB4UIV ex CE WCIV TV At 10:37 AM 1/1/2014, you wrote: From: Hal Murray Maybe next year we should see how much delay data we

Re: [time-nuts] MS3106R10SL-4S connector question

the ones I have seen take the place of a crimp pin to be inserted into the connector to maintain moisture integrity. With the length, it looks like it would take the place of a wire in the water seal / strain relief, if only one wire were to be used. 73 Glenn Never seen one like that before

Re: [time-nuts] MS3106R10SL-4S connector question

That is a dummy pin to seal a position in the connector that does not have a pin. If all of the pins are installed it is not used. 73 Glenn WB4UIV At 07:13 PM 12/9/2013, you wrote: I got a GPS Source splitter recently and since my little Adafruit doesn't have enough power to run it I g

Re: [time-nuts] Off Topic Sortof: Board Rework Stations

This is the station that I bought. It is not as sophisticated, but,not as much either. http://www.ebay.com/itm/11632887?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1439.l2649 73 Glenn WB4UIV At 09:45 PM 11/14/2013, you wrote: Bob, Yes - you definitely need the appropriate lens - here

Re: [time-nuts] Clock Driver Design

Would an analog video distribution amplifier work? These are available cheap. TV stations used these eight or so in a frame. The frame had a power supply and the BNC i/o connectors. Each da would drive 6 or 8 outputs. 73 Glenn WB4UIV Retired TV CE. At 01:28 PM 9/26/2013, you wrote: I am

Re: [time-nuts] Warped back to 1993

With the wrong date and time, the GPS should not find almanac data, so will not lock. This was the problem caused by the 1024 week roll over problem. Are we possibly at week 2048?? 73 Glenn WB4UIV At 11:28 PM 8/10/2013, you wrote: ma...@non-stop.com.au said: > Hal, I can't get it to

[time-nuts] HP-117A

Are there any tricks to getting a HP 117A to lock to the current WWVB transmissions. I have read the thread for the Spectracom receivers. Will this work with the 117A? Thanks 73 Glenn WB4UIV ___ time-nuts mailing list -- time-nuts@febo.com To

Re: [time-nuts] Odd FTS 4060 Behavior

leads that are designed to be soldered. Silver plating seems like a better solution. In this case, it appears that pins were soldered that were not designed to be soldered. Glad that you found the problem. 73 Glenn WB4UIV At 06:40 PM 6/13/2010, you wrote: Interesting. Solder and gold

Re: [time-nuts] Achieving maximum performance when driving 5370A/B inputs

These were used on some measuring instruments to provide a balance 'guarded' input. The shield around the balanced conductors provided a ground between the DUT and the measuring equipment that was not connected to the input. IIRC this was for very low level signals. 73 Glenn WB4UIV

Re: [time-nuts] The Smell of Tantalum in the Morning

interesting failure mode for ATC ceramic capacitors. This failure mode will only occur in a sealed environment (submarine. Just an observation. 73 Glenn WB4UIV At 09:46 AM 2/8/2010, you wrote: The history of tantalum failures is wide and varied, but there are some common characteristics: 1

Re: [time-nuts] ABC time signals in Tasmania/Australia wrong

. 73 Glenn WB4UIV CE WCIV TV At 10:56 PM 1/2/2010, you wrote: Hi Jim, In Sydney, many months ago, the ABC time signals were absent. I rang them and the technician explained that they use a PC program to produce them, and they had to reboot the computer to start them up again. So I dont know

Re: [time-nuts] Help identifying coax connector type

The larger push on connector is an SMP. This is used a lot in microwave for IF cables. This is a 75 Ohm connector. 73 Glenn WB4UIV At 03:38 AM 12/7/2009, you wrote: I have recently acquired a number of nice coax parts, but I'm not sure exactly what connector types they are. If anybod

[time-nuts] Z3801A Power Supply

Does anyone have a schematic for the Z3801A internal voltage converter board? I will attempt to reverse engineer it if one is not available. 73 Glenn WB4UIV ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com

Re: [time-nuts] The Demise of LORAN (was Re: Reference oscillator accuracy)

navigation system. LORAN is time proven to be functional and the technology is in place on a number of platforms to utilize it. 73 Glenn WB4UIV ETCS(SS) USN Retired (Electronic Navigation) At 10:21 PM 11/14/2009, Francesco Ledda wrote: LORAN is a good back up, but it has problems and

[time-nuts] Reference oscillator accuracy

e did. I would like to be able to verify that my PTB-100 rubidium oscillator is on frequency. If I compare two rubidium oscillators, what would I expect the relative drift rate to be? Thanks 73 Glenn WB4UIV ___ time-nuts mailing list -- time

[time-nuts] Setting Oscillator Frequency

have I made some errors in my computation of frequency offset? Thanks 73 Glenn WB4UIV ___ 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] Rubidium standard

? Do some standards last longer than others? What are the symptoms of a failing rubidium bulb? Thanks 73 Glenn WB4UIV ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and

Re: [time-nuts] Efratom LPRO101 in a Tek TM500 plug-in housing?

TM-506 frame. Just my observations from a commercial product. 73 Glenn WB4UIV At 08:23 PM 11/7/2009, you wrote: Has anyone built a LPRO-101 into one of these plugin housings? I'm toying with the idea, but don't want to reinvent the wheel. My biggest concern is getting rid of the hea

[time-nuts] WWV Clock

My WWV clock at home and the master clock at the TV station that I am engineer for did not update to EST from EDT. Did anyone else see their WWV clock not change time for DST? Thanks 73 Glenn WB4UIV ___ time-nuts mailing list -- time-nuts@febo.com

Re: [time-nuts] OT: Spectrum Analyzer

display is nice and you do not have to worry about did I get an accurate display of what I am looking at or did what I am looking for occur between sample on the digital display. I hope you find what you are looking for. It is hard to beat the 141T for a spectrum analyzer. 73 Glenn WB4UIV

[time-nuts] Oscillator comparison

tell? Warm-up time? Accuracy? Phase noise? 73 Glenn WB4UIV Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/hp_agilent_equipment/ <*> Your email settings: Individual Email | Traditi

Re: [time-nuts] Gold plating on aluminum

To plate gold on copper requires the copper be first nickle plated. Then the gold is plated onto the nickle. Gold will not directly plate on copper. 73 Glenn WB4UIV At 03:36 PM 10/20/2009, you wrote: In message <80f9fcf76d3642698820a10169603...@pc755913417801>, "Nic McLean" wr

Re: [time-nuts] hp10811 OCXO shipping jolt/drop survival?

this case the possible wrong units could apply, so, you need to use the correct units so that there is no misunderstanding. Did you mean mHz or MHz?? 73 Glenn WB4UIV At 03:21 AM 10/10/2009, you wrote: Bruce Griffiths wrote: swingbyte wrote: HI all , I had a 5370 A shipped to me that

Re: [time-nuts] HP 106B part no.

1854-0003 is a good part number. I have a few here that were removed from equipment. Possibly someone with the proper equipment could characterize this part and determine a suitable parametric substitute. 73 Glenn WB4UIV At 11:43 AM 8/9/2009, you wrote: Double check: "Q11 is marked as

Re: [time-nuts] Time/freq from digital TV

and remember to check on this Monday. I do know that our Analog transmitter used an ovenized crystal for frequency control. We were on channel 4. We definitely are not slaved to the network for frequency control. 73 Glenn WB4UIV At 06:18 PM 6/13/2009, you wrote: My radio has many news

Re: [time-nuts] Time Signals on TV signals

/Iteration_1/It1.2ReadMe.pdf This explains a little about the conversion of analog line 21 to DTV captions. It is possible that you can set your recorder to read 608 captions? Hope this helps. 73 Glenn WB4UIV CE WCIV TV At 12:52 PM 5/25/2009, Bill Hawkins wrote: Aficionados of accurate time, I

Re: [time-nuts] WTB: 10 Volt L1 & L2 GPS Antenna

You could put a regulator on the voltage line for the antenna so that you could use a 5 Volt antenna. This would get you away from the specific voltage requirements for their antenna. 73 Glenn WB4UIV At 09:54 PM 5/20/2009, you wrote: Hi: I just got an Ashtech Z-12-R Reference Station and

Re: [time-nuts] fleabay cesium

. The tube can be very expensive. 73 Glenn WB4UIV At 12:19 AM 5/9/2009, you wrote: OK, dumb question time. I have a few GPSDO's (Trimble T-Bolt, Z3801A, TrueTime & HB units). How much better can the Cesium be than any of those ?? 73, Dick, W1KSZ -Original Message- >

Re: [time-nuts] Datum/Trimble 9390

suspect that my 9390 had a Y2K problem and/or a 1024 week rollover problem. Is this possibly the same engine that you replaced the ROMs in?? 73 Glenn WB4UIV At 12:04 PM 3/24/2009, you wrote: >We use the Trimble 9390 where I work. > >Around the Y2K period we received new EPROM sets to put

Re: [time-nuts] Motorola KXN1132AA

re 6-32 and are at the corners of an imaginary 2"x4" rectangle centered on the 5.25x3 side. The side that has the BNC connector and terminals is soldered into the rest of the case. There are two dimples to two sides of the box to stop this piece from going too far into the box. 73 Gle

Re: [time-nuts] Motorola KXN1132AA

was no GPS in the parts that I got. The oscillator is large enough to be a double oven OCXO. Thanks for any help 73 Glenn WB4UIV At 06:34 PM 1/24/2009, you wrote: >If that came from a PURC, see if the GPS receiver is included. It may not as >they used one receiver per site and slaved a

[time-nuts] Motorola KXN1132AA

interface the oscillator. Pin 4 is plus and pins 2 and 3 are negative. I think that this oscillator is an OCXO and works on 24VDC. Can this oscillator be disciplined? What are the other pins for? What is the oscillator accuracy? Thanks 73 Glenn WB4UIV

Re: [time-nuts] LPRO-101

My heatsink appears to have a thermal resistance of about 3 degrees C per watt. It is similar to Thermalloy 60975. I will dig deeper into the junk box and see if I can find a heatsink with larger fins. Thanks for the guidance. 73 Glenn WB4UIV At 11:50 PM 1/11/2009, you wrote: >Glenn Lit

[time-nuts] LPRO-101

half giving me two 4.0 inch pieced. I plan to bolt each piece to the bottom of the LPRO-101, using the six mounting holes, three per heatsink. Would this be sufficient heatsink? Thanks in advance. 73 Glenn WB4UIV ___ time-nuts mailing list -- time-nuts

Re: [time-nuts] Another LPRO-101 Rb Osc question...

would like to know what the other connector is for and what the headers inside the oscillator are for. These are not mentioned in the manual available on the web. 73 Glenn WB4UIV At 01:21 PM 1/1/2009, you wrote: >Hello, Time-Nutters-- > >In looking at the LPRO-101 unit I'm holding

Re: [time-nuts] Build my own dist. amp ??

. Depending on the amplifier, you might have control over the equalization or not. All that I have seen allow the amplifier gain to be adjusted from the front of the module. 73 Glenn WB4UIV At 02:16 PM 12/13/2008, you wrote: >Dave M wrote: > > Randy, > > There are a couple d

Re: [time-nuts] Help with HP 8640B generator

then to you. 73 Glenn WB4UIV At 11:03 PM 9/4/2008, you wrote: >I've obtained a faulty HP 8640B signal generator, and have determined >that the fault is in one of the dividers. (The unit has output only on >the top two ranges). Other than that, the generator seems to be in fine >

Re: [time-nuts] 468-DC NBS Time receiver

Thank you for the reply and the links to the resources. I may use this as a slave display from another time generator. At least I will not waste my time trying to get this to function as it was intended. Thanks 73 Glenn WB4UIV At 12:57 PM 5/28/2008, you wrote: >- Original Mess

[time-nuts] 468-DC NBS Time receiver

I found one of these in my stuff. Is it good for anything but parts? As I understand it, the service that this received has been shut down. Thanks 73 Glenn WB4UIV ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https

[time-nuts] Thunderbolt Buy

I would like to be placed on the list for one of these if possible. Thank you 73 Glenn Little WB4UIV ___ 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

[time-nuts] Rubidium oscillator

frequency error after cold power up on day 1 was 756 E-12. On day 2 it displayed 1256 E-9. I suspect that the Rubidium standard has a problem. The Rubidium standard id an FRK. What might be causing the problem with the time display? Could a bad Rubidium lamp cause this? Thanks 73 Glenn WB4UIV

Re: [time-nuts] Robert G8RPI -- Odetics 325 PSU

cians" cannot fix a SMPS as they cannot find a bad semiconductor and the capacitors will check close to the correct value with acceptable leakage. They cannot check the parameter, ESR, that is causing the problem. Hope this helps. 73 Glenn WB4UIV At 02:04 PM 4/19/2008, you wrote: >Hi Roy, &g

[time-nuts] week 1024 roll over

one, if they have one to copy, for a mere $250.00. I suspect that they do not have a firmware update that they will release for a reasonable cost. This is a hobby, not a business for me. Any help or advice? Possibly just scrap this and use the Rb standard? Thanks 73 Glenn WB4UIV

[time-nuts] Datum GPS Time/Frequency System

amplifier to feed the original destination and a BNC connector on the back panel. The amplifier should isolate the 10 MHz output on the back from the reference to the board. Any help appreciated. What I would like to find is an operators and a service manual. Thank you Glenn WB4UIV

Re: [time-nuts] How much should I expect to spend for making a gps based standard?

index.php?title=Cheapest_True_Atomic_Clock cheers, glenn On 12/13/06, Allan w. Bart, Jr. <[EMAIL PROTECTED]> wrote: > Hello, > > Can anyone give me somenumbers? > > Allan Bart > > ___ > time-nuts mailing list > time-nuts@febo.com >

Re: [time-nuts] Surplus Guidelines, was: Rubidium Standard

en back-to-back, ie a 1,000s Tau is 1,000 readings taken in one 1,000s window? What do you call it if you take 1,000 readings in a 10,000s window and compute the Allen Dev. from that? cheers, glenn ___ time-nuts mailing list time-nuts@febo.com https://w

Re: [time-nuts] CDMA and Watch

try googling for "cdma ntp" and you'll get: http://www.endruntechnologies.com/ntp-server.htm -glenn On 11 Oct 2006 06:25:35 -, sid_b19 <[EMAIL PROTECTED]> wrote: > > > I am mailing from India. Can anyone tell me whether there is any > watch or clock company w

Re: [time-nuts] Features of a Precision Clock?

easier to install (where it's not already installed). cheers, glenn ___ time-nuts mailing list time-nuts@febo.com https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts

Re: [time-nuts] Features of a Precision Clock?

could hook a relay up to would be MUCH better than a buzzer. This would then replace my bedside alarm clock. > >>(4) Other displays such as fractional Julian Day number, fractional > >>Modified Julian Day number. sidereal time, or ??? IMHO, features like an alar

Re: [time-nuts] Re Danjon Astrolabe

=114m F=910, f/8) Doing a fixed mount at a know location shouldn't be a problem. I've also got an untested Hamamatsu E717-07 photomultiplier tube. Please let me know how it goes. cheers, glenn ___ time-nuts mailing list time-nuts@feb

Re: [time-nuts] Chip-scale Atomic Clock !

Could be this: THE *CHIP*-SCALE *ATOMIC CLOCK* – RECENT DEVELOPMENT PROGRESS http://tycho.usno.navy.mil/ptti/ptti2003/paper44.pdf#search=%22usno%20chip%20atomic%20clock%22 See also the conference pape

Re: [time-nuts] [Fwd: Health of GPS constellation questioned -- "recently there have been more satellite outages than ever before"]

FYI- Here's a reply from my mother, a professional surveyor. -glenn K Powers wrote: > It's always been true for us that GPS has times of the day when either > there aren't enough satellites or the configuration is bad (high PDOP, > over 6). Last summer we had to take a

Re: [time-nuts] Time syncing question

t care too much about exactly what time it is. They certainly don't care about "non-critical bugs." Apologies to anyone out there that actually writes cell phone apps that work reliably. -glenn ___ time-nuts mailing list time-nuts@f

Re: [time-nuts] Time syncing question

ng the blind, AFAIK many people on this list make their living designing/building/selling precise timing products. Others have experience using precise timing equipment. cheers, glenn ___ time-nuts mailing list time-nuts@febo.com https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts

Re: [time-nuts] Time syncing question

sooner or later, it'll coincide with some other event, which will cause someone to be kicked off the conference-call-of-a-lifetime. Just my $0.02, glenn Hal Murray wrote: >> I'd say one jump if you just want to get the job done, but >> incrementally if you want a cleaner solution

Re: [time-nuts] GPS Timing prob

Tom Clark, K3IO wrote: > For the Time-Nuts folks: Would there be any interest in a PCB "widget" > that would correct the Motorola receiver if we were to make it available? > Definately. -glenn ___ time-nuts mailing list time-

Re: [time-nuts] Query: Interest in clock synthesizer module

clock should not affect how closely sync'ed your NTP server is to another one. Rb oscillators are $250-$500 (LPRO) on ebay, a good OCXO is <$50. cheers, glenn John C Nordlie wrote: >Yes John, I'd be interested. I'd also be curious how inexpensivly >this could be integr

Re: [time-nuts] PXA255 & 10 MHz GPIO

sible. It needs to record the MAC address of the packet and the timestamp, then send that data via an IP multicast packet over ethernet. thanks, glenn ___ time-nuts mailing list time-nuts@febo.com https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts

[time-nuts] fyi: plotter.exe works with wine

't test it much. cheers, glenn ___ time-nuts mailing list time-nuts@febo.com https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts

Re: [time-nuts] GPS Distribution amplifier

-GPS-Distribution-Amplifier_W0QQitemZ140016445294QQihZ004QQcategoryZ25392QQssPageNameZWDVWQQrdZ1QQcmdZViewItem>s on ebay right now. I've seen others come through from time to time. -glenn ___ time-nuts mailing list time-nuts@febo.com https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts

[time-nuts] PXA255 & 10 MHz GPIO

x27;t see the answers in there. I'm looking into this becuase I think it would be easier to develop timing applications on a "full function Linux computer <http://gumstix.com/rohs.html>." thoughts? glenn ___ time-nuts mailing lis

[time-nuts] Falling Edge Error

GPS, 100 sample average. cheers, glenn ___ time-nuts mailing list time-nuts@febo.com https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts

Re: [time-nuts] Enhancing the TIC232 code for better data

this is true, we want to >make sure we keep that edge the way it is and then invert the 1PPS from >the DUT, if this is possible. > > FYI- according to the engineering note on the Oncore UT+ the 1 PPS is 200ms long +/- 1ms. You could have the GPS unit offset the 1 PPS

Re: [time-nuts] TIC232 Detailed Operation

I've never programmed a PIC, nor do I know much about TI measurements. But, if you wanted 100 ps resolution, would it make sense to average five 125 samples? thanks, glenn Richard H McCorkle wrote: >By selecting a known sample time for the XO speed used, the LSB >of the displayed

Re: [time-nuts] SiLabs

Is the USB bus really a good way to get 1 PPS into a machine? I would think it would have quite a bit of jitter in it. -glenn Randy Warner wrote: >Didier, > >I too have looked at the SiLabs parts. I may just have to get one of >their eval boards. > >I use the SiLabs CP

Re: [time-nuts] Frequency Dividers

; Please let me know how your eval goes. thanks, glenn ___ time-nuts mailing list time-nuts@febo.com https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts

Re: [time-nuts] A Simple PIC Divider

t;add x steps." I'm not sure if it would matter if the skipped steps were on the high or low side of the pulse. You could also use this function to compensate for the temperature dependent TTL->RS232 line driver delay used on 1 PPS lines

Re: [time-nuts] How do I know my GPS stabilized oscillator is working?

d an interface board. (Hopefully, I'll be able to work out any thermal issues.) cheers, glenn ___ time-nuts mailing list time-nuts@febo.com https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts

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