Re: [time-nuts] WWV Clock

the projection clock in my bedroom. No glasses, no light needed to tell the time. Have Fun, Brooke Clarke http://www.prc68.com Mike Monett wrote: Replying to my own post, there are two bits that indicate daylight saving time changes. Here's a paragraph from page 27, Lombardi, NIST

Re: [time-nuts] WWV Clock

Hi Bill: My bad. 2 am is when the bars close. Any change prior to then would be a problem. After 2 pm there's not many who care. Have Fun, Brooke Clarke http://www.prc68.com Bill Hawkins wrote: Um, the time change takes place at 2 AM in the USA, springing ahead to 3 AM or falling back to 1

Re: [time-nuts] LORAN C shutdown

Hi: It's here: http://www.navcen.uscg.gov/Loran/default.htm under: The Operating Status of LORAN-C Have Fun, Brooke Clarke http://www.prc68.com paul swed wrote: Alan Very sorry if I grabbed your thread. I thought I changed the header I finally found it in the senate votes this weekend

Re: [time-nuts] Loran C shutdown

Hi: As the distance between the transmitter and receiver increases so does the jitter in the received signal. You can see that in the data on the NIST page where they monitor different stations from Colorado. The greater the distance the poorer the time recovered. Have Fun, Brooke

Re: [time-nuts] OT - GPS and North

and distance between the stakes based on carrier phase processing inside the GPS unit. Have Fun, Brooke Clarke http://www.prc68.com iov...@inwind.it wrote: Does a stationary (not in motion) GPS receiver know where the North is? As far as I can understand, it doesn't, isn't it? Antonio I8IOV

Re: [time-nuts] OT - GPS and North

an option to turn it off when not in use. There's no tilt correction so the GPS receiver needs to be held level when using the mag compass. Have Fun, Brooke Clarke http://www.prc68.com iov...@inwind.it wrote: Does a stationary (not in motion) GPS receiver know where the North is? As far as I

Re: [time-nuts] OT - GPS and North

second range). Have Fun, Brooke Clarke http://www.prc68.com Bruce Griffiths wrote: When a star tracker is used as a stellar compass in effect takes simultaneous fixes on several stars and the better ones are capable of an rms error of a few arc seconds, largely limited by atmospheric

Re: [time-nuts] OT - GPS and North

Hi Rex: You can do it with a single GPS (DAGR or PLGR96 or higher) with a 100 meter baseline. See: http://www.prc68.com/I/DAGR.shtml#GLS http://www.prc68.com/I/DAGR.shtml#AzD Have Fun, Brooke Clarke http://www.prc68.com Rex Moncur wrote: Given that we cannot do it with one GPS in a fixed

[time-nuts] Trimble 48000 series GPS receiver?

Hi: These are showing up on eBay (seller : **fluke.l*)* http://cgi.ebay.com/trimble-48000-00-gps-receiver_W0QQitemZ290301113595 http://www.prc68.com/I/Trimpack.shtml#48000 Is there any info about them? -- Have Fun, Brooke Clarke http://www.PRC68.com

Re: [time-nuts] Trimble 48000 series GPS receiver?

Hi Stanley: That sure looks like it. Thanks Have Fun, Brooke Clarke http://www.PRC68.com Stanley Reynolds wrote: - Original Message From: Stanley Reynoldsstanley_reyno...@yahoo.com To: Discussion of precise time and frequency measurementtime-nuts@febo.com Sent: Tue, December 1

Re: [time-nuts] OT: Wanted desperately - LS-120 disk drive

, not the amount of data on the drive so I didn't have the drive recovered. A friend, who thought he had RAID backup, found out it was not backup and happily paid $4k some years ago to have his business drive recovered. Have Fun, Brooke Clarke http://www.PRC68.com Justin Pinnix wrote

Re: [time-nuts] OT: Wanted desperately - LS-120 disk drive

mm and extremely difficult to do with digital media. PS the company referenced in my prior email does more than just hard drives, i.e. floppy, tape, digital camera media, etc. Have Fun, Brooke Clarke http://www.PRC68.com Justin Pinnix wrote: David, You probably know this already, but you

Re: [time-nuts] LORAN C simulator operational

Hi Paul: Austron made a simulator, see: http://www.prc68.com/I/A2042.shtml Click on photos to see larger images. If anyone has any documentation on this unit please let me know. Have Fun, Brooke Clarke http://www.PRC68.com paul swed wrote: A few weeks back I started a discussion

Re: [time-nuts] LORAN C simulator operational

Hi Paul: The 2042 will give you an idea of what features you might want to include, that's why I added larger photos. In addition the European Loran chains have GRI values that are is smaller steps than the US chains. I'd like to know more about your simulator. Have Fun, Brooke Clarke

Re: [time-nuts] LORAN C simulator operational

Hi Paul: Glad to hear it's working! Free schematic software at: http://www.expresspcb.com/ They also have PCB layout that's tied to the schematic and very reasonable prices for making boards. No interest in the company other than being a happy user. Have Fun, Brooke Clarke http://www.PRC68

Re: [time-nuts] Fwd: rare stuff available (National Company NC-1001 Atomichron)

/about?id=jQJlEBAJdq=3305290 3328633 Molecular Beam Tube http://www.google.com/patents/about?id=jQJlEBAJdq=3328633 3258713 Cesium Beam Tube Detector with Niobium Ionizer http://www.google.com/patents/about?id=jQJlEBAJdq=3258713 Have Fun, Brooke Clarke http://www.PRC68.com Philip

Re: [time-nuts] are any time-nuts also random-nuts?

Hi Scott: You can use a noise diode followed by a bias removal circuit to get true random numbers in a much simpler way. Have Fun, Brooke Clarke http://www.PRC68.com Scott Burris wrote: I saw this USB connected hourglass for producing random numbers: http://home.comcast.net/%7Ehourglass

Re: [time-nuts] Non electrical time-nuttery

://www.prc68.com/I/SWCC.shtml Have Fun, Brooke Clarke http://www.PRC68.com Tom Van Baak wrote: How does the pressure change the frequency? Assuming a fixed mechanical impulse, an increase in pressure will result in a slight decrease in amplitude due to the increased friction of the air

Re: [time-nuts] Sidereal time

. Have Fun, Brooke Clarke http://www.PRC68.com Brian Kirby wrote: I would like to have an electronic clock to keep sidereal time. I am planning on using a HP 59309A, which can except an external clock of 1/5/10 Mhz. According to Wikipedia sidereal time is 23 hours 56 minutes and 4.091

Re: [time-nuts] 4 KV Power Supply Recommendations

/scripts/cdrh/cfdocs/cfcfr/CFRSearch.cfm?CFRPart=1030showFR=1 Have Fun, Brooke Clarke http://www.PRC68.com Didier Juges wrote: I could not resist, so I checked my relatively expensive Sears/Kenmore microwave oven. The results are there: http://www.ko4bb.com/Test_Equipment/Microwave_oven_leakage

Re: [time-nuts] [OT] Ikea Lamp

Hi Poul: Can the base be hung on a wall? http://www.ikea.com/us/en/catalog/products/10128734 Have Fun, Brooke Clarke http://www.PRC68.com Poul-Henning Kamp wrote: Speaking of LED lamps: I want to point out that at least over here IKEA has a wonderful little LED lamp for the worktable. It's

Re: [time-nuts] [OT] Ikea Lamp

Hi David: Thanks for the link. I like them. The only problem is that you can not order on line or by phone from Ikea and the nearest store is over two hours drive away. Have Fun, Brooke Clarke http://www.PRC68.com David Martindale wrote: There are multiple versions, including wall

Re: [time-nuts] Conducting Bench Top Material

Hi John: Would you mention the make and model number of the SA and LED? Have Fun, Brooke Clarke http://www.PRC68.com J. Forster wrote: Attached is a spectrum of a white LED Flashlight. My diode spectrometer does not go further than the limits shown. Best, -John === LED

Re: [time-nuts] [OT] Ikea Lamp

to relate frequency and surface temp. Have Fun, Brooke Clarke http://www.PRC68.com paul swed wrote: IKEA and $39 per lamp. Sounds like some pretty good margin in the sale. I guess these LED things will be main stream and save the world when we see them at walmart for $6. On my bench I converted

Re: [time-nuts] White LED's

light. Have Fun, Brooke Clarke http://www.PRC68.com Dave Martindale wrote: Hmm. Has anyone built a strobe light using LEDs instead of a xenon flash tube? I can see the appeal of building something that doesn't need high voltage to fire or trigger the tube. Yes, you probably couldn't get

Re: [time-nuts] Self winding clock co. Weatern union clock

in and not the voltage across it. See: http://www.prc68.com/I/SWCC.shtml http://www.prc68.com/I/SWCC2.shtml Have Fun, Brooke Clarke http://www.PRC68.com Corby Dawson wrote: Hi, I picked up a nice big clock that has self winding clock co. New York and western union on the face. After some research

Re: [time-nuts] More IKEA hardware...

Hi Tom: You can NOT order lamps in the U.S on line. Have Fun, Brooke Clarke http://www.PRC68.com Tom Holmes, N8ZM wrote: While we are briefly back on the subject of IKEA, I recall someone commenting that IKEA does not do web sales. According to the catalog my better half received a couple

Re: AW: [time-nuts] Strange effect with C-Field change -- and a bit ofdata

Hi: The FTS4060/S24 has a package that can be easily removed (a few bolts and some coax and multipin connectors). The Cesium tube and a number of other circuit parts are in this package. The Cesium tube and what FTS calls an interface board bolted to it and that's where all the wires from the

[time-nuts] GPS Serial Data Causes Mouse Pointer to Move

a driver for a serial ball pointing device. Using Device Manager to uninstall the serial ball pointing device does not work because at the next boot it gets reinstalled. The fix is to Disable the serial ball pointing device. 73, Brooke Clarke, N6GCE -- w/Java http://www.PRC68.com w/o Java http

Re: [time-nuts] homebrew atomic reference oscillator?

Hi Bob: If you were going to attempt it first have a tour of the Stanford Research facility in Sunnyvale, CA. You can see the glass blowing used for the lamp and the filter. The manual for the PRS10 explains how it works. Have Fun, Brooke Clarke, N6GCE Robert Aurand wrote: - Original

Re: [time-nuts] Cesium DOES Drift, not

. Frequency plots will graphically show frequency instability (the width of the line) and frequency drift (the slope of the line). /tvb Now Having Fun, Brooke Clarke, N6GCE ___ time-nuts mailing list time-nuts@febo.com https://www.febo.com/cgi-bin

Re: [time-nuts] Telling UT+ to shut up...

Hi John: As far as I know all you can do is see what messages are being send and turn each one off. Have Fun, Brooke John Ackermann N8UR wrote: Is there a way to tell a Motorola UT+ that is outputting some unknown set of messages in binary format to stop all output? I don't want to do a

Re: [time-nuts] Brooks Shera's GPS standard or HP Z3801A??

Hi Tom: Don't forget that SRS has the free PC program Rbmon that talks to the PRS10, although it's listed with a different Rb product. 73, Brooke Tom Van Baak wrote: Why would it be cheaper than building Brook Shera's unit? You still need all the same electronics, but a more expensive

Re: [time-nuts] Brooks Shera's GPS standard or HP Z3801A??

a couple of hundred year old pendulum clock more accurate!!! Dr. David Kirkby Brooke Clarke wrote: Hi Tom: Don't forget that SRS has the free PC program Rbmon that talks to the PRS10, although it's listed with a different Rb product. 73, Brooke Tom Van Baak wrote: Why would it be cheaper than building

Re: [time-nuts] IEEE-488 HP-IB GP-IB Chips

Hi Rick: I remember that when the Motorola 6800 first came out (my first computer was a SWTP 6800 based kit) there were a family of 68xxx chips to go with it and one of them was the 68488. But very shortly after that it was common knowledge that there was a problem with it and almost no one

Re: [time-nuts] Physical Clocks

Hi Bill: I for one think physical clocks are will within the [time-nuts] charter if they are of the precision type. I too am interested in them. Have Fun, Brooke Clarke, N6GCE -- w/Java http://www.PRC68.com w/o Java http://www.pacificsites.com/~brooke/PRC68COM.shtml http://www.precisionclock.com

Re: [time-nuts] My Drifting Cesium Plot

- 210.21 R2 = 0.9773 Have Fun, Brooke Brooke Clarke wrote: Hi: I added the data from the 2100T Loran-C receiver on top of the GPS data. Note that the LORAN-C receiver has 10 ns minimum increments so any data near zero ns is just noise and it has the opposite polarity. The 2100T always starts from zero

Re: [time-nuts] SR620 on eBay (not mine) 7512332987

of is the sellers item flakey? The seller I don't think I've ever seen a counter Brooke Clarke wrote: Hi: There's an SR620 counter on eBay as item 7512332987. It's not mine, just info. Brooke Clarke, N6GCE -- w/Java http://www.PRC68.com w/o Java http://www.pacificsites.com/~brooke/PRC68COM.shtml http

Re: [time-nuts] Having fun with LORSTA list and google maps

Hi Poul: The links below are one step back from full magnification for the two that I chacked 9940X 9660X. Thanks very much for these, Brooke Poul-Henning Kamp wrote: Googles map service can show sattelite pictures, and one can enter lon+lat directly in the URL so I played around with the

Re: [time-nuts] Having fun with LORSTA list and google maps

afternoon when there's excess electricity. Just above and the the left out of the frame is the Sunnyvale Blue Cube Air Force base where the space satellites are controlled. Have Fun, Brooke Poul-Henning Kamp wrote: In message [EMAIL PROTECTED], Brooke Clarke writes: Hi Poul: The links below are one

Re: [time-nuts] Fine frequency adjustment in 5370B

Hi David: It's so easy to feed the PRS10 a 1 PPS from GPS so I don't understand your comment I don't have anything locked to GPS yet, but even when I do, it is not always going to be that convenient for me Have Fun, Brooke -- w/Java http://www.PRC68.com w/o Java

Re: [time-nuts] Airflow around oscillators.

their traces etched away. DO NOT PUT THE BATTERIES CLOSE TO THE OVEN! The PRS-10 needs to be mounted to a heat sink, either the factory finned one or a sizable slab of metal. Do not run it free standing. Have Fun and keep us posted, Brooke Clarke, N6GCE -- w/Java http://www.PRC68.com w/o Java

Re: [time-nuts] Agilent Discontinued Products web Links #2

Brooke Brooke Clarke wrote: Hi: Agilent has a free program to get permission to offer CD or DVD manuals of obsolete Agilent (HP) products and also to allow offering these on line. They have a web page where they list those that have been approved (like yours truly and David Kirkby) that page

Re: [time-nuts] Data collection cycle -- multiple sources to one counter?

cable was both flexible and repeatable without the need for mandrel bending. Regular coax if not allowed to move would only have temperature variations. Have Fun, Brooke David Kirkby wrote: Brooke Clarke wrote: When working with the HP 4380S Balanced Network Analyzer system I found

Re: [time-nuts] : Triax Adapters for the FE 70E

. Pomona has adapters from these to ordinary coax. There are two versions one used 2 lugs (5298)and the other used 3 lugs (5299). See: http://www.pomonaelectronics.com/index.php?i=prodsubparent=RFCONNcat=TRIAXCONNgetDetails=0 73, Brooke Clarke, N6GCE -- w/Java http://www.PRC68.com w/o Java http

Re: [time-nuts] Data collection cycle -- multiple sources to one counter?

HI David: A PIN diode is great for switching RF frequencies above the diode's lifetime. But not so good at switching DC coupled signals. The FET type switches, like the MAX458 are designed for switching DC coupled signals. Have Fun, Brooke Clarke, N6GCE -- w/Java http://www.PRC68.com w/o

[time-nuts] WTB FTS4060/S24 PCBs

Hi: I'd like to reverse engineer the Printed Circuit Board that attaches to the Cesium Beam Tube and the PCB that acts as the mother board for the physics package. This would help greatly in troubleshooting the FTS4060/S24. 73, Brooke Clarke, N6GCE -- w/Java http://www.PRC68.com w/o Java

Re: [time-nuts] meteor collision

Hi: How about http://www.NASA.gov or http://www.nasa.gov/mission_pages/deepimpact/main/index.html?skipIntro=1 Have Fun, Brooke Clarke, N6GCE -- w/Java http://www.PRC68.com w/o Java http://www.pacificsites.com/~brooke/PRC68COM.shtml http://www.precisionclock.com [EMAIL PROTECTED] wrote

Re: [time-nuts] Re: World's most accurate PC clock!

Hi Magnus: Thanks for the corrections and additions, they've been made to the web page. Have Fun, Brooke Clarke, N6GCE -- w/Java http://www.PRC68.com w/o Java http://www.pacificsites.com/~brooke/PRC68COM.shtml http://www.precisionclock.com Magnus Danielson wrote: From: Brooke Clarke [EMAIL

Re: [time-nuts] How do I measure oscillator frequency using 1pps?

averages the 1 day accuracy is about 3E-15. Another option is to use a computer to read the negative sawtooth correction from the GPS receiver and use that on a second by second basis to correct the 1 PPS TI. 73, Brooke Clarke, N6GCE -- w/Java http://www.PRC68.com w/o Java http

[time-nuts] Datum 1000B 10 MHz Oscillator pinouts for the DB-9 connector?

, Brooke Clarke, N6GCE -- w/Java http://www.PRC68.com w/o Java http://www.pacificsites.com/~brooke/PRC68COM.shtml http://www.precisionclock.com ___ time-nuts mailing list time-nuts@febo.com https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts

Re: [time-nuts] Datum 1000B 10 MHz Oscillator pin outs for the DB-9connector?

Hi Robert: The part number on the 1000B is 05818-119. Thanks for the pinout info, Brooke Clarke [EMAIL PROTECTED] wrote: About the time I posted the link to the 1000B datasheet, I noticed that it doesn't have the pinout you're looking for (but I went ahead and posted it anyway). I also

Re: [time-nuts] Microwave counter with RPS10 rubidium on eBay

output and RS-232 coms. Have Fun, Brooke Clarke -- w/Java http://www.PRC68.com w/o Java http://www.pacificsites.com/~brooke/PRC68COM.shtml http://www.precisionclock.com David Kirkby wrote: I don't know if this is of interest to anyone, but there is an 18 (perhaps 24) GHz microwave counter

Re: [time-nuts] Re: UTC, 60 Hz

Hi Tom: Does your phase plot mean that a mains powered wall clock might be off by 10 seconds? Have Fun, Brooke Clarke, N6GCE -- w/Java http://www.PRC68.com w/o Java http://www.pacificsites.com/~brooke/PRC68COM.shtml http://www.precisionclock.com Tom Van Baak wrote: . . . For real plots

[time-nuts] HP 5060A Manual On Line?

Hi: The 5060A manual I have is for serial number prefixes 532 (and 528, 516, 512, 504) but does not cover prefix 732 which is my model. Is there a 5060A manual on line that's new enough to cover the 732 prefix? Thanks, Brooke Clarke -- w/Java http://www.PRC68.com w/o Java http

[time-nuts] Velleman MK153 Single Digit LED Clock Kit

/moreinfo.cfm/MK153 Many of the Velleman Mink Kits (MKnnn) are PIC based. Have Fun, Brooke Clarke -- w/Java http://www.PRC68.com w/o Java http://www.pacificsites.com/~brooke/PRC68COM.shtml http://www.precisionclock.com ___ time-nuts mailing list time

[time-nuts] Phase lock a VCXO to a standard 10MHz or to a GPS(1pps)

Hi: Steven Bible says the Reflock II might be available in September 2005, see: http://gref.cfn.ist.utl.pt/cupido/reflock.html Have Fun, Brooke Clarke, N6GCE -- w/Java http://www.PRC68.com w/o Java http://www.pacificsites.com/~brooke/PRC68COM.shtml http://www.precisionclock.com

[time-nuts] FA HP 5060A

the 100 kc divider from getting an input. If you have any questions, just ask. It's the unit my web page is based on. http://www.pacificsites.com/~brooke/5060A.html 73, Brooke Clarke, N6GCE -- w/Java http://www.PRC68.com w/o Java http://www.pacificsites.com/~brooke/PRC68COM.shtml http

Re: [time-nuts] Jupiter T question

Hi Rich: Although I have a manual there's no receiver here and so I don't have any experience. Brooke Richard and Marcia Putz wrote: Hi All, The otherday I asked about the Jupoiter T receivers and Brooke mentioned the results of his experience with it, I was curious what he meant when he

[time-nuts] My Austron 2100T Loran-C Timing Receiver w/IEEE-488 on eBay

clock to a 1, 5 or 10 MHz frequency standard. This is an End Use Certificate item and can not be sold outside the U.S. Have Fun, Brooke Clarke, N6GCE -- w/Java http://www.PRC68.com w/o Java http://www.pacificsites.com/~brooke/PRC68COM.shtml http://www.precisionclock.com

Re: [time-nuts] Low cost synchronization

emit beeps or Morse code telling the user how far off it was allowing the user to gauge how often they need to resync. A TCXO should work for this. Have Fun, Brooke Clarke, N6GCE -- w/Java http://www.PRC68.com w/o Java http://www.pacificsites.com/~brooke/PRC68COM.shtml http

Re: [time-nuts] Tracor Omega VLF Synthesizer

$349%20EA. 73, Brooke Clarke, N6GCE -- w/Java http://www.PRC68.com w/o Java http://www.pacificsites.com/~brooke/PRC68COM.shtml http://www.precisionclock.com Bob Voelker wrote: Does anyone have any information on the Tracor Omega VLF Synthesizer? It seems to be some kind of a precision frequency

Re: [time-nuts] Oscillator and Synthesizer Specs

Hi John: I'd like to see the Dataum 1000B Ultra-Stable 10 MHz oscillator as used in the FTS4060 included. Brooke John Ackermann N8UR wrote: For a while, I've had two web pages with specs on various frequency standards and synthesizers of interest to our community. I've combined the two

Re: [time-nuts] Oscillator and Synthesizer (and Analyzer) Specs

Hi John: How about the HP 4395A. Although limited to 500 Mhz the performance is fantastic. http://www.pacificsites.com/~brooke/4395A.shtml 73, Brooke Clarke, N6GCE -- w/Java http://www.PRC68.com w/o Java http://www.pacificsites.com/~brooke/PRC68COM.shtml http://www.precisionclock.com John

Re: [time-nuts] DC Voltage Ramp?

Hi Tom: The plot at http://www.thinksrs.com/products/PRS10.htm showing GPS and Rb indicates that GPS for times less than say 500 seconds has more noise than the Rb source. So a voltage ramped 1000B should be very clean below 500 seconds. Have Fun, Brooke Tom Van Baak wrote: I was

Re: [time-nuts] Off the wall: anyone with experience programming HP 3456A?

Hi John: It may be that there are other register bits that need to be enabled in order to let the SRQ out. Is there a status register diagram in the manual? Have Fun, Brooke John Ackermann N8UR wrote: By any chance, has anyone here done any GPIB programming of the HP 3456A DMM? I am

Re: [time-nuts] Off the wall: anyone with experience programmingHP3456A?

, Brooke Clarke, N6GCE -- w/Java http://www.PRC68.com w/o Java http://www.pacificsites.com/~brooke/PRC68COM.shtml http://www.precisionclock.com John Miles wrote: . . . One other thing we've found, particularly with the older HP instruments, is that you often need to insert a sleep of anything

Re: [time-nuts] Antenna for 8163

of being able to null it out. Welcome and Have Fun, Brooke Clarke, N6GCE -- w/Java http://www.PRC68.com w/o Java http://www.pacificsites.com/~brooke/PRC68COM.shtml http://www.precisionclock.com Joe Lippencott wrote: Hi, New member to the group. Thank you for letting me participate. I have

Re: [time-nuts] GPS Timing receivers

Hi Tom: When I was learning about the Trimble 1990 vintage Trimpack family of receivers I bought a number of antennas and learned that the Trimpacks need an antenna with about 40 dB of gain, which is a lot different from a passive antenna or an active antenna with the more common 20 dB of

[time-nuts] HP 5110A A1A4 Schematic Wanted

Hi: I'm looking for a schematic parts layout drawing for the HP 5110A Harmonic Generator PCB A1A4. A complete hard copy manual would also be great. http://www.pacificsites.com/~brooke/HP5100.shtml Thanks, Brooke Clarke, N6GCE -- w/Java http://www.PRC68.com w/o Java http

Re: [time-nuts] RE: phase locking Rb to GPS

that are typically run at higher power levels. I think this is related to the crystal throwing off atoms, so more power means more acceleration and more atoms thrown off. Have Fun, Brooke Clarke, N6GCE -- w/Java http://www.PRC68.com w/o Java http://www.pacificsites.com/~brooke/PRC68COM.shtml http

Re: [time-nuts] GPS timing receivers

Hi Michelangelo: The LORAN-C Timing receivers (Austron 2100T) have a 1 PPS input becasue the LORAN-C system can not be used to set a clock so the 1 PPS input is used to mark the top of a second. Which GPS receiver has a 1 PPS input? Have Fun, Brooke Clarke, N6GCE -- w/Java http

[time-nuts] Battery Top Power Supply

battery snap connection. More info at: http://www.pacificsites.com/~brooke/BTPS.shtml Both fixed voltage and variable voltage versions are available. If interested let me know. Have Fun, Brooke Clarke, N6GCE -- w/Java http://www.PRC68.com w/o Java http://www.pacificsites.com/~brooke

[time-nuts] Second FTS4060 shows Drift, is it me?

that would cause apparent drift? Thanks for any thoughts, Brooke Clarke, N6GCE -- w/Java http://www.PRC68.com w/o Java http://www.pacificsites.com/~brooke/PRC68COM.shtml http://www.precisionclock.com ___ time-nuts mailing list time-nuts@febo.com https

Re: [time-nuts] Second FTS4060 shows Drift, is it me? Good Links

Hi: Sorry for the bad links, here are good ones: Today's plot = http://www.pacificsites.com/~brooke/pdf/sn1013_850_Drift2.pdf s/n 1227 29 Apr 2005 plot = http://www.pacificsites.com/~brooke/pdf/Cs_Drift0429.pdf Brooke Brooke Clarke wrote: Hi: A year ago I took apart the FTS4060 that was DOA

Re: [time-nuts] Second FTS4060 shows Drift, is it me? Good Links

Hi Tom: The plot with red and blue is the old data on s/n 1227 where the red points are from LORAN-C and the blue points from GPS. s/n 1227 = http://www.pacificsites.com/~brooke/pdf/Cs_Drift0429.pdf from April 29, 2005. This might be a clue to the problem I'm now having with s/n 1013.

Re: [time-nuts] source for ICS525 demo board ...

panel bracket? Have Fun, Brooke Clarke, N6GCE -- w/Java http://www.PRC68.com w/o Java http://www.pacificsites.com/~brooke/PRC68COM.shtml http://www.precisionclock.com Hal Murray wrote: I keep hoping that the TAPR people will issue a board with it... I've also been thinking of building

Re: [time-nuts] source for ICS525 demo board ...

=-1storeId=10001catalogId=10001productId=141372 In the ham radio uses they typically have a common PIC, like the 16F84, that sends the divider codes to the ICS525 and has some sort of selector switches to choose the channel number. 73, Brooke Clarke, N6GCE -- w/Java http://www.PRC68.com w/o Java

Re: [time-nuts] FTS4060 Continuing Saga

but for others are in the 300 ns area. Turning Tropo Corrections off seems to lower the jitter. Thanks, Brooke Clarke Rob Kimberley wrote: Brooke, GPS is affected by heavy rain. Signal will be attenuated, and some at low elevations may be blocked. Snow is even a worse culprit especially if it settles

Re: [time-nuts] FTS4060 Continuing Saga

, or are you seeing a new phase offset and/or a new frequency offset than before? Did you have to re-load the zero-D coords into your GPS receiver? Make a lat/lon typo perhaps? /tvb - Original Message - From: Brooke Clarke [EMAIL PROTECTED] To: Discussion of precise time and frequency

Re: [time-nuts] FTS4060 Continuing Saga

- Original Message - From: Brooke Clarke [EMAIL PROTECTED] To: Tom Van Baak [EMAIL PROTECTED]; Discussion of precise time and frequency measurement time-nuts@febo.com Sent: Monday, March 06, 2006 10:58 AM Subject: Re: [time-nuts] FTS4060 Continuing Saga, GPS rain Hi Tom: I think

Re: [time-nuts] FTS4060 Continuing Saga

sequence, the same prevailed. I then decided on the 24 hour down period for the oscillator and cesium ovens to fully recycle. Gar - Original Message - From: Brooke Clarke [EMAIL PROTECTED] To: Discussion of precise time and frequency measurement time-nuts@febo.com Sent: Monday, March 06

Re: [time-nuts] FTS4060 Continuing Saga

Hi: Problem solved. The Ultra Stable Oscillator coarse tuning pot needed adjustment. Once it was adjusted to put the strong center peak into the center of the control voltage range s/n 1013 locked right up. This procedure is described in appendix A of the manual. But the procedure for the

[time-nuts] retro encabulator

Hi: Here's a Rockwell Automation Products commercial you just can't miss. http://video.google.com/videoplay?docid=5125780462773187994q=retro+encabulator Have Fun, Brooke Clarke, N6GCE -- w/Java http://www.PRC68.com w/o Java http://www.pacificsites.com/~brooke/PRC68COM.shtml http

Re: [time-nuts] Telecom Solutions DCD Cesium

Hi Magnus: If what you have is an FTS clone I might be able to help. Can you email to me a top or bottom hi resolution photo of your unit with the covers removed? Thanks, Brooke Clarke, N6GCE -- w/Java http://www.PRC68.com w/o Java http://www.pacificsites.com/~brooke/PRC68COM.shtml http

[time-nuts] Austron Manuals

Hi: I've suffered a hard drive failure (a drive recovery service may be able to get some data out of it) and would like to borrow back a copy of the CD-ROM that I was selling with the Austron Manuals. In particular the one that includes the 1250 and 1250B. Thanks, Brooke Clarke, N6GCE

Re: [time-nuts] ...Your thoughts on the Trimble Resolution T?

(Gulf war) time period all have good batteries, so the current needed to do this must be very small. The sawtooth correction can be used with hardware to move the 1 PPS edge or it can be used in software where a computer does the math on the measured time interval. Have Fun, Brooke Clarke

[time-nuts] IC for 1 PPS Output

small offsets. I seem to remember that there may be an internal resistance already in some chips so putting a 47 or 50 Ohm resistor in series may result in an impedance above 50 Ohms. Any thoughts? Thanks, Brooke Clarke -- w/Java http://www.PRC68.com w/o Java http://www.pacificsites.com/~brooke

Re: [time-nuts] IC for 1 PPS Output

Hi Rex: Yup. It's really hard to get 50 of those 2 Ohm cables. Brooke Rex wrote: On Thu, 06 Apr 2006 21:14:29 -0700, Brooke Clarke [EMAIL PROTECTED] wrote: to drive 50 a couple of Ohm cables he he. Interesting typo. I assume you really meant 2 50-ohm cables, rather than 50 2-ohm

[time-nuts] GPS Satellite Elevation Observation

that was there (which was moved up from the zero degree plot). After about 4 weeks my FTS4060 plot shows -7 ns/day but with an R^2 value of only 0.54. Part of the reason for such a low correlation may be the above mask angle allowing skimming passes? Have Fun, Brooke Clarke -- w/Java http://www.PRC68.com w/o

Re: [time-nuts] GPS Antenna (50ohm) and Satelite Splitters and Amps(75ohm)

Hi Don: I'm using both Radio Shack parts for my house GPS antenna system. http://www.pacificsites.com/~brooke/4GPS.shtml But be very careful about which 4-way divider ports are DC connected to the antenna. 73, Brooke Clarke, N6GCE -- w/Java http://www.PRC68.com w/o Java http

Re: [time-nuts] Loran-C Austron

Hi Rob: What happened to Austron? Brooke Clarke, N6GCE -- w/Java http://www.PRC68.com w/o Java http://www.pacificsites.com/~brooke/PRC68COM.shtml http://www.precisionclock.com Rob Kimberley wrote: No, LORAN is most definitely not dead. Good news, as I used to sell LORAN-C timing from

Re: [time-nuts] Loran - any good for timekeeping?

to better than GPS, but when it's many hundreds of miles there's a lot of variation. I'm attaching a gif of the spectrum here from 0 to 200 kHz that goes with the web page: http://www.pacificsites.com/~brooke/Spec_0002.shtml Have Fun, Brooke Clarke, N6GCE -- w/Java http://www.PRC68.com w/o Java

Re: [time-nuts] Loran - any good for timekeeping?

Hi John: Setting the 2100T is really a two step process. After you have done all the setup possible and then connect you house 1 PPS and put in a phony TOC that's say 10 seconds ahead, then at the TOC the 2100T will sync it's 1 PPS output (you will get a red error light). You need to do

Re: [time-nuts] Loran - any good for timekeeping?

Hi Tom: If you're in the U.S. here's a list of stations: http://www.pacificsites.com/~brooke/Loran-c.shtml I'm not sure how to find the others. Have Fun, Brooke Clarke -- w/Java http://www.PRC68.com w/o Java http://www.pacificsites.com/~brooke/PRC68COM.shtml http://www.precisionclock.com

Re: [time-nuts] Loran - any good for timekeeping?

+29%27+11.586%22+Wll=39.852681,-87.486556spn=0.003179,0.010697t=hom=0 You can almost see how to decode the URL. Have Fun, Brooke Brooke Clarke wrote: Hi Tom: If you're in the U.S. here's a list of stations: http://www.pacificsites.com/~brooke/Loran-c.shtml I'm not sure how to find the others

Re: [time-nuts] Spectracom 8140T distribution amps

Hi John: eBay auction 7605840019 says up to 25 boxes on the master coax. But I suspect it's a function of the power supply in the main box. 73, Brooke Clarke -- w/Java http://www.PRC68.com w/o Java http://www.pacificsites.com/~brooke/PRC68COM.shtml http://www.precisionclock.com John

[time-nuts] u-blox LEA-4T Timing GPS receiver?

Hi: Does anyone know about the new u-blox LEA-4T Timing GPS receiver and time stamp? http://www.u-blox.com/products/lea_4t.html Have Fun, Brooke Clarke -- w/Java http://www.PRC68.com w/o Java http://www.pacificsites.com/~brooke/PRC68COM.shtml http://www.precisionclock.com

Re: [time-nuts] Motorola Oncore Basic Command @@Bk Help

osc offset oo- m/sec C - Checksum Have Fun, Brooke Clarke, N6GCE -- w/Java http://www.PRC68.com w/o Java http://www.pacificsites.com/~brooke/PRC68COM.shtml http://www.precisionclock.co xaos wrote: Hello Everybody, Does anyone here know what the Motorola Oncore @@Bk command does? It is from

[time-nuts] ICS525 Battery Top Singnal Generator - Frequency Synthesizer-Translator, Test Transmitter, (Crystal Replacement?)

uses. Is there any interest in my making more of these to sell? Have Fun, Brooke Clarke -- w/Java http://www.PRC68.com w/o Java http://www.pacificsites.com/~brooke/PRC68COM.shtml http://www.precisionclock.com ___ time-nuts mailing list time-nuts

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