Re: [time-nuts] New WWVB modulation format receivers (NOT)

am sure this subject has been covered but I don't know how to find it. -- 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

Re: [time-nuts] Looking for WWVB digital wall clock with digital 24 hour UTC display

is likely to be as good or better then a WWWV sync'd atomic clock.There is not much reason to buy one of those any more. -- Chris Albertson Redondo Beach, California ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https

Re: [time-nuts] New WWVB modulation format receivers (NOT)

greatly reduce the price. -- 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.

Re: [time-nuts] Looking for WWVB digital wall clock with digital 24 hour UTC display

of power The OP is not looking for a practical solution. He is going to have to build it. Maybe even use real seven segment LEDS and a wood cabinet for a 1970's retro look. -- Chris Albertson Redondo Beach, California ___ time-nuts mailing list

Re: [time-nuts] Serial port splitter s/w

Partridge ___ 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. -- Chris Albertson Redondo Beach, California

Re: [time-nuts] Thermal Compensation: Digital vs Analog

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. -- Chris Albertson Redondo Beach, California ___ time-nuts mailing list -- time-nuts@febo.com

Re: [time-nuts] Serial port splitter s/w

using slower or a widely shared connection might not get as good a result. -- 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

Re: [time-nuts] Serial port splitter s/w

To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. -- Chris Albertson Redondo Beach, California ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi

Re: [time-nuts] Serial port splitter s/w

://www.febo.com/cgi-bin/ mailman/listinfo/time-nuts and follow the instructions there. -- 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

Re: [time-nuts] Serial port splitter s/w

for hardware hackers. Cost is $5 different. You can read specs and the respective forums. One thing to watch out for is that all ARM boards run on 3.3 volts. The serial ports are 3.3 volts. Don't connect a 5 volt signal and certainly NOT a real RS232 level signal -- Chris Albertson Redondo Beach

Re: [time-nuts] GPSDO with all-digital phase/time measurement?

cases. -- 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.

Re: [time-nuts] Serial port splitter s/w

to be better in that regard since the Ethernet MAC is directly on the CPU. The BBB is also entirely open source, unlike the proprietary Broadcom CPU on the RPi. Didier KO4BB On February 26, 2014 11:32:36 AM CST, Chris Albertson albertson.ch...@gmail.com wrote: It's not going to work

Re: [time-nuts] GPSDO with all-digital phase/time measurement?

to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. -- Chris Albertson Redondo Beach, California ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman

Re: [time-nuts] Arduino GPSDO with 1ns res TIC

. Your filtering equations look strange. Rather than having a PI loop it looks like both the P and I branch integrates. I'm also unclear about the loop gain changes by the pre-filter averager. Will have to look more at your code. Cheers, Magnus -- Chris Albertson Redondo Beach, California

Re: [time-nuts] Another atomic clock question

To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. -- Chris Albertson Redondo Beach, California ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi

Re: [time-nuts] Another atomic clock question

. ___ 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. -- Chris Albertson Redondo Beach, California ___ time-nuts

Re: [time-nuts] Another atomic clock question

On Sunday, March 2, 2014 5:46 AM, Chris Albertson albertson.ch...@gmail.com wrote: On Sat, Mar 1, 2014 at 8:05 PM, Bob Albert bob91...@yahoo.com wrote: Paul, as I said I just want to know how close my crystals are and be able to adjust them as well as they can be. Don't say as well as can

Re: [time-nuts] Another atomic clock question

Junk crystals are good thermometers. Ballpark is 1 ppm/degree-C So does this mean I can epoxy a sandstone power resister to a junk crystal and keep the frequency exactly perfect by varying the power in the resister? -- Chris Albertson Redondo Beach, California

Re: [time-nuts] GPSDO module connections

To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. -- Chris Albertson Redondo Beach, California ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https

Re: [time-nuts] Another atomic clock question

thermometer then frequency is all you need to measure. One can make the control easier by adding some thermal mass. A big chunk of metal would add some stability. -- Chris Albertson Redondo Beach, California ___ time-nuts mailing list -- time-nuts

Re: [time-nuts] Another atomic clock question

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. -- Chris Albertson Redondo Beach, California ___ time-nuts mailing

Re: [time-nuts] Another atomic clock question

is a lab 10MHz reference good to 11 digits then see who can do the job at lowest cost. Thanks that schematic looks to be the exact one I was looking for, I've got most of the rest of what's needed to connect it to a GPS. -- Chris Albertson Redondo Beach, California

Re: [time-nuts] WWVB Remodulator

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. -- Chris Albertson Redondo Beach, California ___ time-nuts mailing list -- time-nuts@febo.com

Re: [time-nuts] Another atomic clock question

be required to build a dual channel GPSDO. It will be interesting to look at andompare the 10MHz outputs of two oscillators that are being disciplined by the same controller and GPS receiver. -- Chris Albertson Redondo Beach, California ___ time-nuts

Re: [time-nuts] Another atomic clock question

of C code. Trivial, even on an 8-bit controller. -- 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.

Re: [time-nuts] Another atomic clock question

a minimum elevation angle or whatever. 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.

Re: [time-nuts] Another atomic clock question

output into binary mode. NMEA is a lowest common denominator data format used by GPS, marine autopilots, compass, wind and log instruments. It was never designed for timing. It's for ship and boat instruments. -- Chris Albertson Redondo Beach, California

Re: [time-nuts] Another atomic clock question

devices to the same serial interface, like a DAC or whatever Lars From: Chris Albertson On Wed, Mar 5, 2014 at 5:43 PM, Didier Juges shali...@gmail.com wrote: Tom and Bob, It is not obvious to me that it is easier to simply apply a correction in nS increments with a range as wide

Re: [time-nuts] Another atomic clock question

don't need to worry about errors that are well under 0.5 mV. If I were building this using a 24-bit ADC and wanted to take full advantage of its resolution then tiny things matter. On Fri, Mar 7, 2014 at 12:47 PM, Jim Lux jim...@earthlink.net wrote: On 3/7/14 12:31 PM, Chris Albertson wrote

Re: [time-nuts] Range of Sawtooth values?

on back then. -- 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.

Re: [time-nuts] Modeling vs reality question re my TIC

be that you are not doing that correctly or at the time you think you are. I'm guessing and we'd need both the spec sheet and your code to know for sure. -- Chris Albertson Redondo Beach, California ___ time-nuts mailing list -- time-nuts@febo.com

Re: [time-nuts] Frequency Counter using OCXO and MCU

-to-Square_Wave_BJT_Converter_Wenzel.gif -- WBW, V.P. ___ 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. -- Chris Albertson Redondo Beach, California

Re: [time-nuts] Frequency Counter using OCXO and MCU

Sorry forgot to add this. As for delayed turn on. That can work but why not simply have the software go into a 5 or 10 second wait before it does anything else. Display warming up or please wait on the LCD. On Wed, Mar 12, 2014 at 7:18 AM, Chris Albertson albertson.ch...@gmail.comwrote

Re: [time-nuts] Frequency Counter using OCXO and MCU

. I like the comparator best because it will not load the clock. Diodes will load it for other users. -- Chris Albertson Redondo Beach, California ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin

Re: [time-nuts] PLL Math Question

is finding the right values for the constants. This is worth reading PIDforDummies.html http://www.csimn.com/CSI_pages/PIDforDummies.html -- Chris Albertson Redondo Beach, California ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go

Re: [time-nuts] PLL Math Question

, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. -- Chris Albertson Redondo Beach, California ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin

[time-nuts] Specs for CMAC 2390C?

for the reasonable price? -- 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.

Re: [time-nuts] Power Supply for AD9852 / AD9854

-bin/mailman/listinfo/time-nuts and follow the instructions there. -- 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

Re: [time-nuts] Power Supply for AD9852 / AD9854

can't do anything because all the important design work happens within millimeters of the power and ground pins. -- Chris Albertson Redondo Beach, California ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi

Re: [time-nuts] NIST time services

/time-nuts and follow the instructions there. -- 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] Specs for Bliley NV47M1008?

I found a Bliley 10MHz OCXO model NV47M1008 Anyone here know about these? They seem to be available for about $11.00 or so. I looked around on the web and found specs for units that are kind of like this but not this exact model. You can see one at eBay #171274003103 Thanks, Chris Albertson

Re: [time-nuts] Using GPS to Fine Tune a Rubidium Frequency Standard.

/November_13/11x13_Kaune_PIC_Code.zip /Anders ___ 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. -- Chris Albertson Redondo Beach

Re: [time-nuts] Using GPS to Fine Tune a Rubidium Frequency Standard.

@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. -- Chris Albertson Redondo Beach, California ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https

Re: [time-nuts] GPSDO simulation tool

there. -- 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.

Re: [time-nuts] GPSDO simulation tool

the instructions there. -- 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.

Re: [time-nuts] NIST time services

billion requests per day then buy many copies the ARM based systems. They are cheap. -- 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

Re: [time-nuts] Aircraft ping timing

each adds up to a ton of money. It might pay to be a simple pirate and simply steel the cargo no political or religious motives at all, just the valuable goods in the hold. -- Chris Albertson Redondo Beach, California ___ time-nuts mailing list -- time

Re: [time-nuts] GPSDO simulation tool

,I,D parameters. These plots would have taken weeks of data collection. Instead it took 20 seconds with the simulator. /tvb - Original Message - From: Chris Albertson albertson.ch...@gmail.com To: Tom Van Baak t...@leapsecond.com; Discussion of precise time and frequency

Re: [time-nuts] NIST time services

primary target market. Mike George On 3/22/2014 15:54, Chris Albertson wrote: On Sat, Mar 22, 2014 at 12:24 PM, Chuck Forsberg WA7KGX c...@omen.com wrote: I can see a use for an inexpensive GPSDO with a built-in gigabit ethernet or USB3 port powering an NTP server. Neither of those

Re: [time-nuts] NIST time services

about timing you will distribute a PPS or a 10MHz reference NTP is best used over the Internet. It was designed for unreliable data links. -- Chris Albertson Redondo Beach, California ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go

Re: [time-nuts] NIST time services

some Internet servers but when the Internet goes down NTP will find which of the local island servers has the most stable clock and those will cary the most weight in the calculation of consensus time which is a weighted time based on all true tickers. -- Chris Albertson Redondo Beach

Re: [time-nuts] NIST time services

then it will as good as PTP. That should be obvious. NTP is modular and it is easy to write a new reference clock driver. So if I had time stamping network hardware, I'd want an NTP driver for it and would use it. But most network hardware lacks the feature. -- Chris Albertson Redondo Beach, California

Re: [time-nuts] GPSDO simulation tool

can short cut this and go straight to the target hardware. But I think or hope we will see a more complex generation of GPSDO that have a LCD display, user interface and built-in network services. You can't short cut something like that. -- Chris Albertson Redondo Beach, California

Re: [time-nuts] GPSDO control system

://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. -- 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

Re: [time-nuts] Nav Receiver Sawtooth Correction?

To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. -- Chris Albertson Redondo Beach, California ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin

Re: [time-nuts] NIST time services

@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/ mailman/listinfo/time-nuts and follow the instructions there. -- Chris Albertson Redondo Beach, California ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https

Re: [time-nuts] NIST time services

://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. -- 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

Re: [time-nuts] Nav Receiver Sawtooth Correction?

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. -- Chris Albertson Redondo Beach, California

Re: [time-nuts] Airraft Ping Timing

To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. -- Chris Albertson Redondo Beach, California ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https

Re: [time-nuts] Hanging bridge question

. There is not point in correcting the pulse, you don't need a corrected pulse. What you want is a measurement of the phase. Chris Albertson Redondo Beach, California ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https

Re: [time-nuts] NIST time services

On Tue, Mar 25, 2014 at 5:52 AM, Paul tic-...@bodosom.net wrote: On Mon, Mar 24, 2014 at 4:26 AM, Poul-Henning Kamp p...@phk.freebsd.dk wrote: In message CABbxVHuQc0144==21mDa_R8ErKov= em+9rvrbpggexnzztj...@mail.gmail.com , Chris Albertson writes: Yes. NTP calls it root distance

Re: [time-nuts] Airraft Ping Timing

the low speed link to get one. -- 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.

Re: [time-nuts] NIST time services

. On Tue, Mar 25, 2014 at 6:12 PM, Paul tic-...@bodosom.net wrote: [I apologize in advance] On Tue, Mar 25, 2014 at 7:47 PM, Chris Albertson albertson.ch...@gmail.comwrote: Peole here have very much mis-understood the term Root Distance. I don't think Poul-Henning Kamp should be accused

Re: [time-nuts] RC TIC linearity correction?

. This gives you a rough DAC vs. Phase function. Re-running the calibration could make up for some component aging. It would take some time (hours) to wait for everything to warm up and then you'd have to move the EFV voltage slowly -- Chris Albertson Redondo Beach, California

Re: [time-nuts] Beaglebone NTP server

is to follow the step by step process -- 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.

Re: [time-nuts] FEI-5660 Rubidium Oscillator

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. -- Chris Albertson Redondo Beach, California ___ time-nuts mailing list -- time-nuts@febo.com

Re: [time-nuts] Another Arduino GPSDO

said this was going to drive a wall clock? But on the other hand using sawtooth is free and does not add to the parts count. All you do is read some serial data. -- Chris Albertson Redondo Beach, California ___ time-nuts mailing list -- time-nuts

Re: [time-nuts] Another Arduino GPSDO

adds a few more lines of code. -- 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.

Re: [time-nuts] NTP and Windows 7

to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. -- 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] Water on Enceladus - What does this imply about NASA'a ability to measure frequency?

the Doppler sift of the transmitter.I've been trying to figure out what 90 microns/sec means in terms of frequency. But I think(?) I need to know the orbital velocity of Enceladus. -- Chris Albertson Redondo Beach, California ___ time-nuts mailing

Re: [time-nuts] Water on Enceladus - What does this imply about NASA'a ability to measure frequency?

of transponder so the high precision clock is on Earth. They say this is the first time they are able to detect mechanical movement in the ground station antenna in the Doppler data. I guess 90 uM/sec sensitivity just about everything is a noise source. -- Chris Albertson Redondo Beach

Re: [time-nuts] new GPSDO kit

there. -- 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.

Re: [time-nuts] M12+T module questions

://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. -- 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

Re: [time-nuts] new GPSDO kit

/mailman/listinfo/time-nuts and follow the instructions there. -- 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

[time-nuts] First success with very simple, very low cost GPSDO, under $8

readable. -- Chris Albertson Redondo Beach, California #define PWMHIGHPIN 3 // high PWM-DAC pin (connected to 39k) #define PWMLOWPIN 11 // low PWM-DAC pin (connected to 10M) volatile boolean pps_interrupt = false; volatile unsigned long timer1CountNew = 0; volatile unsigned long

[time-nuts] Is this ocxo salvageable?

is left open (disconnected) and a you can see the frequency is spot on 10MHz. https://www.dropbox.com/s/0gy3yobd4myi4vp/waveform.jpg -- Chris Albertson Redondo Beach, California ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go

Re: [time-nuts] First success with very simple, very low cost GPSDO, under $8

to pull the frequency back up to 10MHz from 0. My next test will be to feed a 10MHZ and PPS signals into the Arduino from a Thunderbolt. The TB signal is near perfect and I will look at the noise reported by the Arduino. Something to try while I unsolder the can. -- Chris Albertson Redondo Beach

Re: [time-nuts] First success with very simple, very low cost GPSDO, under $8

. Later I add some sophistication back in and measure the effect. Heck at this point I have a capacitor based TIC that I am completely IGNORING. The point is to see what each added layer of complexity buys. -- Chris Albertson Redondo Beach, California

Re: [time-nuts] First success with very simple, very low cost GPSDO, under $8

easier to deal with than a general purpose multi-tasking operating system. There is far less non-determinism. -- Chris Albertson Redondo Beach, California ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi

Re: [time-nuts] First success with very simple, very low cost GPSDO, under $8

://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. -- 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

Re: [time-nuts] First success with very simple, very low cost GPSDO, under $8

a couple dozen at present. -- 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.

Re: [time-nuts] First success with very simple, very low cost GPSDO, under $8

seconds but I can detect that. I think I'll just ignore that second. -- 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

Re: [time-nuts] Yet another Arduino-based GPSDO

is new and not generally released yet, but is available on request by contacting its author via the Arduino forum. This may be an answer to the issue Chris Albertson raised on how to test a GPSDO without expensive gear. You can for example produce a histogram of the 5-minute average DAC output values

Re: [time-nuts] First success with very simple, very low cost GPSDO, under $8

From: Chris Albertson albertson.ch...@gmail.com To: Discussion of precise time and frequency measurement time-nuts@febo.com Sent: Wednesday, April 9, 2014 6:35 PM Subject: Re: [time-nuts] First success with very simple, very low cost GPSDO, under $8 On Wed, Apr 9, 2014 at 1:04 PM

Re: [time-nuts] First success with very simple, very low cost GPSDO, under $8

://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. -- 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

Re: [time-nuts] First success with very simple, very low cost GPSDO, under $8

. It might work, then I can get rid of counting overflows. -- 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

Re: [time-nuts] First success with very simple, very low cost GPSDO, under $8

-bin/mailman/listinfo/time-nuts and follow the instructions there. -- 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

Re: [time-nuts] First success with very simple, very low cost GPSDO

to build a GPSDO. -- 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.

Re: [time-nuts] ARM boards for low-cost GPSDOs

. ___ 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. -- Chris Albertson Redondo Beach, California

Re: [time-nuts] ARM boards for low-cost GPSDOs

I'm thinking about good reasons to build a GPSDO using something as big and powerful as a 32-bit ARM processor.I think the reason is that you are not really building a GPSDO but some other device that just happens to have a GPSDO inside of it. For example you want to build a laser range

Re: [time-nuts] First success with very simple, very low cost GPSDO

in your case, while doing a binary search I must count all 10,000,000 cycles. So at each cycle in your binary search what data do you need to decide if the frequency is high or low? -- Chris Albertson Redondo Beach, California ___ time-nuts mailing

Re: [time-nuts] First success with very simple, very low cost GPSDO

the TIC capacitor voltage too. Best regards, 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. -- Chris Albertson

Re: [time-nuts] Adafruit (MT3339) problems today

location mode. Pick a really good spot for the antenna -- 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.

Re: [time-nuts] GPSDO Crystal Aging

averaged them together you could somehow get a quality clock, or at least 31.6 times better. Kind of like the notion of 1000 monkeys with 1000 typewriters... -- Chris Albertson Redondo Beach, California ___ time-nuts mailing list -- time-nuts@febo.com

Re: [time-nuts] First success with very simple GPSDO

-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. -- Chris Albertson Redondo Beach, California ___ time-nuts mailing list -- time-nuts@febo.com

Re: [time-nuts] First success with very simple GPSDO

and version of each. I just got a couple small LCD graphic panels from China. Free shipping got them here is just a few days. Cost $2.60 each. They should make for a nice status display. -- Chris Albertson Redondo Beach, California ___ time-nuts

Re: [time-nuts] Yet another Arduino-based GPSDO

Lars' circuit with a TDK C0G ceramic capacitor FK28C0G1H102J, which is supposed to be good to 30ppm/deg C, and no-name carbon resistors. I will fiddle with it and see if I can figure out where the sensitivity is coming from. On Wed, Apr 9, 2014 at 10:20 PM, Chris Albertson albertson.ch

Re: [time-nuts] Yet another Arduino-based GPSDO

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. -- Chris Albertson Redondo Beach, California

Re: [time-nuts] First success with very simple, very low cost GPSDO, under $8

. No need for '74 FFs or '373' or counter chips.I do get precision timing with no time critical software, no 74xxx chips. -- Chris Albertson Redondo Beach, California ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https

Re: [time-nuts] GPS antenna in silicon/RTV encapsulation

-bin/mailman/listinfo/time-nuts and follow the instructions there. -- 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

  1   2   3   4   5   6   7   8   9   10   >