Re: [time-nuts] Ships fooled in GPS spoofing attack suggest Russian cyberweapon

ones occasionally get > moved. > > ___ > time-nuts mailing 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] Ships fooled in GPS spoofing attack suggest Russian cyberweapon

t; > ___ > time-nuts mailing 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 To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.

Re: [time-nuts] Ships fooled in GPS spoofing attack suggest Russian cyberweapon

___ > > time-nuts mailing list -- time-nuts@febo.com > > To unsubscribe, go to https://www.febo.com/cgi-bin/ > > mailman/listinfo/time-nuts > > and follow the instructions there. > > > ___ &g

Re: [time-nuts] Trimble Thunderbolt no longer determines the correct date

downloading but an in-line device has to be built for each user. -- 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] Can Lady Heather set PC time directly from a TrimbleThunderbolt?

t from variable stars.Usually you can start with you application and work backwards to place a requirement on time accuracy On the other hand this is a "time nuts" list and some people here just want the BEST they can get. I'm not a fan of Meinberg because of the way they market freely a

Re: [time-nuts] Can Lady Heather set PC time directly from a Trimble Thunderbolt?

___ > time-nuts mailing 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] Local System Time Sync

ime, it is always wrong. > > What am I missing here ? > > Thanks, > > Lee > ___ > time-nuts mailing 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] DAC performance [WAS: Papers on timing for lunar laser ranging]

0 years? > > They still don’t seem to have the hysteresis problem licked. Yes, you can > do an oversized reference > and take care of the issue. More or less that’s what you would have done > 20 years ago. > > Bob > > > > > > Rick N6RK > > ____

Re: [time-nuts] Thunderbolt Monitor Kit by KO4BB

ps he will do a post showing his implementation. > ___ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/ > mailman/listinfo/time-nuts > and follow the instructi

Re: [time-nuts] PI Zero W LED Desktop Clock with 10ths of Seconds / NTP disciplined

There already exists an NTP for ESP8266. At least a simple one. Look over on GitHub. On Sun, Jul 2, 2017 at 5:27 AM, Tim Shoppa <tsho...@gmail.com> wrote: > I have been thinking about doing similar with an ESP8266 controller -- Chris Albertson Redondo Beach, C

Re: [time-nuts] Power connectors continued

02764391?hash=item3f7e59f567:g:UA8AAOSwi7RZNQDE> I think these win the bang per buck contest. For a buck each, these are not machined from brass, I think molded pot metal and chromed. -- Chris Albertson Redondo Beach, California ___ time-nuts mailing l

Re: [time-nuts] GPScon running on Raspberry Pi 3b

> time-nuts mailing 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] Latest Lady Heather

have an "unlisted number." > > Thanks, > > Wes > > ___ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/m > ailman/listinfo/time-nuts > and follo

Re: [time-nuts] Anderson PowerPole (was Charles Wenzel GPSDO)

I > knew better, but temporarily slipped an alkaline 9V battery into a > trouser pocket, where it was shorted by my keys and became extremely hot > very rapidly. The peak current might reach 10 A (depending on the > battery chemistry and how it's shorted), so the battery heats up

Re: [time-nuts] GPScon running on Raspberry Pi 3b

le of logic level serial ports on the expansion > > connector you can connect a level shifter two. One port is normally the > > Linux serial console which you can configure to be a general purpose -- Chris Albertson Redondo Beach, California _

Re: [time-nuts] Power connectors continued

gt; > > > > Mark Spencer > > m...@alignedsolutions.com > > > ___ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instruction

Re: [time-nuts] Anderson PowerPole (was Charles Wenzel GPSDO)

il.com> wrote: > Never seen the XT60. Thanks for the heads up - looks promising - and cheap. > > Brent > > On Thu, Jun 22, 2017 at 12:48 PM, Chris Albertson <albertson.ch...@gmail.com >> wrote: > >> One of the problems of power poles is they are expensive. Not a >&

Re: [time-nuts] How to love your Power Poles.

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

Re: [time-nuts] Anderson PowerPole (was Charles Wenzel GPSDO)

; or just use a > square or figure 8 knot on the cables. > > /tvb > > ___ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the ins

Re: [time-nuts] TruePosition on the Arduino

ttps://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >> and follow the instructions there. > > > ___ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. -- 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] GPScon running on Raspberry Pi 3b

it looks to me like Olgierdhas a working INTEL linux os running on the Pi3. He installed Wine on the Intel Linux not on the ARM Linux It looks like maybe Michael has an ARM version of linux running native on the Pi3 Wine will not run on that If you need to run Wine, you need to fist have an

Re: [time-nuts] Hints on PPS Buffer design...

mailing 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 To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.

Re: [time-nuts] GPS splitter

their kits. Sometimes a GPS receiver will raise an "Antenna Alarm" if it does not see a DC load but you can turn those off with a serial command -- Chris Albertson Redondo Beach, California ___ time-nuts mailing list -- time-nuts@febo.com To

Re: [time-nuts] Control Systems (was: uC ADC resolution)

t; like e.g. "Feedback Control of Dynamic Systems", by Franklin, Powell, > Emami-Naeini. -- 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] uC ADC resolution (was: Poor man's oven)

4 real bits (we can filter the switching noise from a low frequency dither) -- 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] uC ADC resolution (was: Poor man's oven)

ystal will >> become a pretty major issue. >> >> Simple rule of thumb - add at least two bits past whatever the target is. >> More or less, if you *are* after 0.1C and that comes out to 6 bits, you >> need >> eight solid bits to get things to work properly

Re: [time-nuts] uC ADC resolution (was: Poor man's oven)

y entertaining below > around 300 mV (with a 5V Vref). > ___ > time-nuts mailing 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] uC ADC resolution (was: Poor man's oven)

theLiPo battery dichange below a limit so I'm sampling voltage at 1Hz. Got a link to or the name of the app note? > > -- Chris Albertson Redondo Beach, California ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://ww

Re: [time-nuts] Poor man's oven

nsors. I guess one could use the crystal frequency as a measure of its temperature to tune the system. Is there a name to Google to read up on using two sensors and a pid-like algorithm? -- Chris Albertson Redondo Beach, California ___ time-nuts maili

Re: [time-nuts] Poor man's oven

> time-nuts mailing 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] Poor man's oven

want that to be large compared to the heat from a full-on heater so that the rate of change looks slow compared to your control loop cycle. -- Chris Albertson Redondo Beach, California ___ time-nuts mailing list -- time-nuts@febo.com To uns

Re: [time-nuts] Poor man's oven

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

Re: [time-nuts] Poor man's oven

6GXV > > ___ > time-nuts mailing 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] PPS sync

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

Re: [time-nuts] poor-man's oven

amplifier that was in effect counting electrons. On Mon, Jun 5, 2017 at 2:15 AM, Attila Kinali <att...@kinali.ch> wrote: > On Sun, 4 Jun 2017 22:01:45 -0700 > Chris Albertson <albertson.ch...@gmail.com> wrote: > > > Voltage is proportional to the product of resistance and absolut

Re: [time-nuts] PPS sync

___ > time-nuts mailing 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

Re: [time-nuts] poor-man's oven

s that needs altering. -- The Doctor > ___ > time-nuts mailing 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] poor-man's oven

more complex circuit, and the thermistor was the sensor. > (discussions of TE devices too) > ___ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/m > ailman/listinfo/time-nuts > and follow the instructions there. > -- Chris Albe

Re: [time-nuts] The future of Telecom Frequency Standard surplus

ge. > > Thanks; > > > Thomas Knox > 1-303-554-0307 > act...@hotmail.com > ___ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/ > mailman/lis

Re: [time-nuts] Machining some aluminum help!

many bits and taps, -- 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] Machining some aluminum help!

-holes in line > with the mounting holes on of the lid. > > Ed > ___ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions the

Re: [time-nuts] GNSS Disciplined Clock

ing 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 To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.

Re: [time-nuts] TruePosition and Arduino Progress

ag > to be set. When set, update the clock then clear the flag and repeat. > > > > On Sun, May 21, 2017 at 2:32 PM, Chris Albertson <albertson.ch...@gmail.com> > wrote: > >> To add to my last message. >> >> You CAN collect all the data then parse it li

Re: [time-nuts] TruePosition and Arduino Progress

in interrupted while the display updates so th ring buffer might get filled up a little. But the ISR terminals the parser clears the buffer. On Sun, May 21, 2017 at 11:20 AM, Chris Albertson <albertson.ch...@gmail.com> wrote: > The problem is that you get the ENTIRE string t

Re: [time-nuts] TruePosition and Arduino Progress

ouldn't make > that work yesterday. More to follow. > > thanks much and 73, > ben, kd5byb > ___ > 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] Machining some aluminum help!

com >> To unsubscribe, go to https://www.febo.com/cgi-bin/m >> ailman/listinfo/time-nuts >> and follow the instructions there. >> >> > ___ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://w

Re: [time-nuts] Machining some aluminum help!

; ___ > time-nuts mailing 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] Machining some aluminum help!

reassemble. On Thu, May 18, 2017 at 5:13 PM, jimlux <jim...@earthlink.net> wrote: > On 5/18/17 2:36 PM, Chris Albertson wrote: > >> It would be easy to re-design the job for cheaper machining.. Do you >> really need to tap the holes? You might use self taping screws. Id

Re: [time-nuts] Machining some aluminum help!

__ > time-nuts mailing 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] Machining some aluminum help!

setup that could do the work a bit cheaper? > > If not I'll give it a try myself. > > Please contact me off list. > > Thanks! > > Corby Dawson > > ___ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to h

Re: [time-nuts] Machining some aluminum help!

and follow the instructions there. > > > ___ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/ > mailman/listinfo/time-nuts > and follow the instructions there. > -- 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] GPS seconds conversion on an Arduino

On Mon, May 15, 2017 at 1:49 PM, Ben Hall <kd5...@gmail.com> wrote: > Hi Chris and list, > > On 5/15/2017 1:22 AM, Chris Albertson wrote: > >> Are you still going for Sidereal time? If so that is floating point >> > > I'm not sure how Sidereal time came up...i

Re: [time-nuts] GPS seconds conversion on an Arduino

. On Mon, May 15, 2017 at 1:49 PM, Ben Hall <kd5...@gmail.com> wrote: > Hi Chris and list, > > On 5/15/2017 1:22 AM, Chris Albertson wrote: > >> Are you still going for Sidereal time? If so that is floating point >> > > I'm not sure how Sidereal time

Re: [time-nuts] GPS seconds conversion on an Arduino

ng to order one of those $10 Saleae >> clones this evening. That Saleae clone analyzer would be just the ticket >> to see if the time information is coming from the serial port before the >> 1PPS tick. This is what is written in the little TruePosition information >> we h

Re: [time-nuts] GPS seconds conversion on an Arduino

ut output their own format of message. One > message contains GPS time in seconds...plus the number of leap seconds that > have elapsed, so my goal there was to convert the GPS time from the unit > into normal UTC date and time. > > On 5/14/2017 12:38 PM, Chris Albertson wrote: > &

Re: [time-nuts] GPS seconds conversion on an Arduino

h of the day continuously changes. So depending on how accurate you need to be this can use a LOT of 64-bit floating point math. -- Chris Albertson Redondo Beach, California ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo

Re: [time-nuts] GPS seconds conversion on an Arduino

ithmetic (long longs) opens up a whole new can of > worms. > ___ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/ > mailman/listinfo/time-nuts > and follow the instruc

Re: [time-nuts] Looking for a HP-58503 display

> > The display (VFD) is a bit dim and blotchy. > > Does anybody have a replacement display that would look better? > > - Mark > -- > Sent from iPad Air > ___ > time-nuts mailing list -- time-nut

Re: [time-nuts] How get FEI-Zyfer 380 GPSDO to talk with computer?

to GPSCon or TAC32. Supposedly, it wants a program > >> called > >> "GPSMon" but I do not find the program with Google. > >> > >> > >> > >> Jim Robbins > >> > >> N1JR > >> > >> __

Re: [time-nuts] How get FEI-Zyfer 380 GPSDO to talk with computer?

> time-nuts mailing 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] TAPR Oncore M12+ kit

erally, the way I mill plates such as these is I surface a piece of > scrap and then glue (using superglue) the stock down onto the scrap. I can > then machine around the edges without worrying about clamping. With > pockets though, the torque even when ramping down might break the part &

Re: [time-nuts] TAPR Oncore M12+ kit

; Anaheim, California (SE of Los Angeles, near Disneyland) > > ___ > > time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to > https://na01.safelinks.protection.outlook.com/?url= > https%3A%2F%2Fwww.febo.com%2Fcgi-bin%2Fmailman% > 2Flistinfo%2Ftime-nuts=01%

Re: [time-nuts] Frequency counter questions

On Mon, Apr 24, 2017 at 10:13 AM, Bob kb8tq wrote: > Hi > > Some of the process below is “not trivial”. One example: > > You have a “gate” from the GPSDO and a “signal” from somewhere else. If you > want the STM to do the whole thing, the “gate” pin needs to get the job > done in

Re: [time-nuts] Frequency counter questions

display, the STM32 can serve a web page and then you see the frequency on your phone. 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] Frequency counter questions

U to set and read some registers and > control > > the user interface. > > > > The time stamping idea is not bad. But today you do NOT need to "post > > process". Your little processor could do this in nearly real-time a

Re: [time-nuts] Frequency counter questions

do this in nearly real-time and you'd have results on the screen in seconds. -- 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] Frequency counter questions

t com. This is for my own non-commercial use. > > Thanks! > > Jerry > ___ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/ > mailman/listinfo/time-n

Re: [time-nuts] Car Clock drift - the lowly 32kHz tuning fork

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

Re: [time-nuts] Car Clock drift - the lowly 32kHz tuning fork crystal specs

temperature there? What I live the clocks always gain time, a minute every could mounts. It seems I always have to set the time back a minute or two. But then it really never gets cold here, maybe a dip below 50F at night in the winter -- Chris Albertson Redondo Beach

Re: [time-nuts] Time Dilation tinkering

ns -- it's not a > good sign when your clock changes by 2e-11 (that's more than 1 ns per > minute) just because of ambient pressure changes. > -- Chris Albertson Redondo Beach, California ___ time-nuts mailing list -- time-nuts@febo.com To unsu

Re: [time-nuts] Time Dilation tinkering

>> [2] I presume at a minimum a counter running at a 5ns or less "tick" fed > >> from a frequency source locked to the 10MHz of the Rb standard. This > >> counter would need to be latched for reading from an external signal so > >> that it can be compare

Re: [time-nuts] time-nuts equipment verification from scratch (was: WTB: GPSDO)

me-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 To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.

Re: [time-nuts] Four hour cycle in GPS NMEA jitter

Yo Chris! > > On Mon, 20 Mar 2017 15:19:25 -0700 > Chris Albertson <albertson.ch...@gmail.com> wrote: > > > I've only hear of 1 uS being broken with hardware. > > A Raspberry Pi can get down to a Standard Deviation of about 350 nano > seconds > using NTPsec.. > >

Re: [time-nuts] Four hour cycle in GPS NMEA jitter

th hardware.You would actually not ned to write much software to make this happen, just move the counter outside the CPU to the FPGA and you about have it. Chris Albertson Redondo Beach, California ___ time-nuts mailing list -- time-nuts@febo.com To unsub

Re: [time-nuts] Smart Phone time display accuracy...?

> AndroiTS GPS Test (V 1.48 Free) is good, but a battery hog I find. On > my Moto G, I find that it can handle not only the US GPS system, but > three other systems too, including Glonass, and I think the new Chinese > system. I don't recognise the last symbol, maybe Galileo. Not bad for > a

Re: [time-nuts] Smart Phone time display accuracy...?

> Not to gloat, but my Android phone is always spot on. I have a GPS time > app that shows the difference between GPS and phone time and it's always in > the tenths of a second area. "tenths of a second" is "spot on"? No way. That is a difference that is perceivable to humans. Apple claims

Re: [time-nuts] Smart Phone time display accuracy...?

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

Re: [time-nuts] Smart Phone time display accuracy...?

n/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 the instructions there.

Re: [time-nuts] WTB: GPSDO

p the budget under say $50 for everything from antenna to power cord. I think it can be done but one can only verify longer term stability. (Yes you were correct a GOOD oversized XO is not sensitive to the environment. But notice the above budget.) -- Chris Albertson Redondo Beach

Re: [time-nuts] WTB: GPSDO

d oscillators and you can measure beat frequencies between them. On Tue, Mar 14, 2017 at 3:33 PM, Tim Lister <lister...@gmail.com> wrote: > On Fri, Mar 10, 2017 at 2:35 PM, Chris Albertson > <albertson.ch...@gmail.com> wrote: >> A GPSDO is not hard to make. All you need i

Re: [time-nuts] Bye-Bye Crystals

> > >>> and follow the instructions there. >> >> ___ >> time-nuts mailing list -- time-nuts@febo.com >> To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > time-nuts Info Page - Ame

Re: [time-nuts] WTB: GPSDO

table GPSDO in solid operational condition, kindly >>> contact me off list. Thanks! >>> >>> 73/jeff/ac0c >>> www.ac0c.com >>> alpha-charlie-zero-charlie > _______ > time-nu

Re: [time-nuts] advice

gt; test design itself. > > Thanks in advance!! > --- > Rhoderick Beery > direct: 402-817-9363 > ___ > 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] ``direct'' RS-232 vs. RS-232 via USB vs. PPS decoding cards

requirements > Web: http://www.satsignal.eu > Email: david-tay...@blueyonder.co.uk > Twitter: @gm8arv > ___ > time-nuts mailing 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 To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.

Re: [time-nuts] ``direct'' RS-232 vs. RS-232 via USB vs. PPS decoding cards

think my main point is correct: what you care about in the uncertainty in the process, not the numbers like delay and offset, it's the error bars in those numbers On Sat, Feb 18, 2017 at 9:14 AM, Chris Albertson <albertson.ch...@gmail.com> wrote: > You are plotting "offset". This is

Re: [time-nuts] Installing GPS Antenna

high, still 10' or so is common without guy wires. > > Thanks. > > Michael > > ___ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinf

Re: [time-nuts] ``direct'' RS-232 vs. RS-232 via USB vs. PPS decoding cards

of a real-time process running on that one computer. In this special case it makes sense to connect GPS PPS to the computer and use no other source of time. On Thu, Feb 16, 2017 at 10:58 AM, Gary E. Miller <g...@rellim.com> wrote: > Yo Chris! > > On Wed, 15 Feb 2017 23:48:3

Re: [time-nuts] ``direct'' RS-232 vs. RS-232 via USB vs. PPS decoding cards

ier is not easy On Thu, Feb 16, 2017 at 9:59 AM, shouldbe q931 <shouldbeq...@gmail.com> wrote: > On Thu, Feb 16, 2017 at 7:55 AM, Chris Albertson > <albertson.ch...@gmail.com> wrote: >> >> But PTP requires special hardware. You may not have this. >> > >

Re: [time-nuts] ``direct'' RS-232 vs. RS-232 via USB vs. PPS decoding cards

BTW I first learned about NTP formerly this same reason. I was writing firmware for an astronomical CCD camera and we wanted to know EXACTLY when exposures started and stopped. On Wed, Feb 15, 2017 at 7:09 PM, MLewis <mlewis...@rogers.com> wrote: > On 15/02/2017 1:17 PM, Chris Albert

Re: [time-nuts] ``direct'' RS-232 vs. RS-232 via USB vs. PPS decoding cards

On Wed, Feb 15, 2017 at 11:48 PM, Chris Albertson <albertson.ch...@gmail.com> wrote: > On Wed, Feb 15, 2017 at 10:30 PM, Ruslan Nabioullin > <rnabioul...@gmail.com> wrote: >> On 02/15/2017 01:17 PM, Chris Albertson wrote: >>> >>> Why set up a dedicated

Re: [time-nuts] ``direct'' RS-232 vs. RS-232 via USB vs. PPS decoding cards

eed at least three servers (and more like five). When > given only two > servers NTP simply dithers back and forth between them. It does not have > a way to figure out which of two clocks is wrong. It will detect a missing > clock, but > not one that is simply off time by a bit. >

Re: [time-nuts] ``direct'' RS-232 vs. RS-232 via USB vs. PPS decoding cards

can keep backups or store media files (videos) or host a small web site NTP is almost zero load on the CPU and the best thing is the NTP accuracy is not effected by CPU load SO you can run other service without degrading the NTP server. (All the time critical stuff happens inside a tiny int

Re: [time-nuts] ``direct'' RS-232 vs. RS-232 via USB vs. PPS decoding cards

select the subset of PCs that all agree on what the time is. The outliers tent to get ignored. When GPS comes back up the system makes a gradual and graceful recovery. Chris Albertson Redondo Beach, California ___ time-nuts mailing list -- time-nuts@f

Re: [time-nuts] ``direct'' RS-232 vs. RS-232 via USB vs. PPS decoding cards

time-nuts@febo.com > > To unsubscribe, go to https://www.febo.com/cgi-bin/ > mailman/listinfo/time-nuts > > and follow the instructions there. > > ___ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/ > mailman/listinfo/time-nuts &g

Re: [time-nuts] ``direct'' RS-232 vs. RS-232 via USB vs. PPS decoding cards

IG input or even an onboard GNSS receiver). > > Thanks in advance, > Ruslan > ___ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/m > ailman/listinfo/time-nuts > and follow the instru

Re: [time-nuts] Vintage Frequency Measurement

get some idea of how those worked. I just wish > I could find the one hidden in my garage :^) > > Dan > > ___ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/m > ailman/listinfo/time

Re: [time-nuts] WWV Receivers

PC software. I say "PC" but a really low-end computer like a Rasperry Pi would be perfect for this, maybe over kill but you'd want the features of the OS to send the time some place -- Chris Albertson Redondo Beach, California ___ time-nu

Re: [time-nuts] Li-ion Battreries

ns and get on with it > ___ > time-nuts mailing 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, Cali

Re: [time-nuts] purpose of time of day display units

ate 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,

Re: [time-nuts] Li-ion Battreries

ing inside some metal container. Just carry the smoking mess outdoors and leave it there for a while.(I tried salvaging lithium cells for Milwaukee power tools with only about 50% success rate) -- Chris Albertson Redondo Beach, California ___ time

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