Re: [time-nuts] How did they distribute time in the old days?

2015-10-14 Thread Bill Hawkins
. I don't know of any mechanical clocks that sync once a day. IIRC, Western Union had to send people to advance or retard the hour hand when daylight savings time became common. There is something about those clocks that makes a time nut want to restore one. Bill Hawkins -Original Message

Re: [time-nuts] UPS for my time rack

2015-10-12 Thread Bill Hawkins
accept that amount of time travel, follow this link: http://www.hactrn.net/sra/vaxen.html or Google "vaxen immortal power" The reference to October 19, 1987, is to the first computer failure to have a major effect on the stock market. Enjoy, as they say Bi

Re: [time-nuts] UPS for my time rack

2015-10-10 Thread Bill Hawkins
ack directly to the line. This allowed the UPS to be replaced when its warranty ran out. Batteries lasted six years, did not invest another $500 in them. Good luck. Bill Hawkins -Original Message- From: Chris Waldrup Sent: Saturday, October 10, 2015 8:20 AM To: TIme Nuts Subject: [time-nuts]

Re: [time-nuts] KS-24361 REF-0 standalone

2015-10-02 Thread Bill Hawkins
are free from discipline and are now drifting. So yes, the positioning aspects matter. Disclaimer: I haven't studied RAIM (or TRAIM) enough to know exactly what goes on, but that's the behavior I've observed. Bill Hawkins -Original Message- From: time-nuts [mailto:time-nuts-boun...@febo.com

Re: [time-nuts] Looking for ECL divide by 3 with symmetry

2015-09-27 Thread Bill Byrom
-- Bill Byrom N5BB On Sun, Sep 27, 2015, at 11:36 AM, ed breya wrote: > I need to build an ECL divide by 3 circuit to run at about 50 MHz input. > I know there are lots of examples out there, but I vaguely recall years > ago I stumbled upon one or more that also provided more of a sy

Re: [time-nuts] more teensies

2015-09-25 Thread Bill Dailey
It would be neat to drive one off a disciplined 16MHz synthesizer and compare. Bill Dailey > On Sep 25, 2015, at 1:40 PM, Jim Lux <jim...@earthlink.net> wrote: > > I ran 5 teensys in parallel, driven from the same Rb source for an hour.. > They track reasonably well.

Re: [time-nuts] algorithms and hardware for comparing clock pulses

2015-09-25 Thread Bill Hawkins
The role of the diode is to break the current path to the cap when S1 shorts the current to ground when PPS 2 occurs. With the diode, S1 does not short the cap to ground. Bill Hawkins -Original Message- From: time-nuts [mailto:time-nuts-boun...@febo.com] On Behalf Of Alex Pummer Sent

Re: [time-nuts] algorithms and hardware for comparing clock pulses

2015-09-25 Thread Bill Hawkins
with proportional terms such as PID do a better job with a linear error signal, unless the thing being controlled (crystal frequency) is so nonlinear that the integral term does most of the work. Wish I could do the experiment, but no longer have a lab. Bill Hawkins -Original Message- From: time-nuts

Re: [time-nuts] algorithms and hardware for comparing clock pulses

2015-09-24 Thread Bill Hawkins
, please ask for clarification. Or do a schematic and ask for corrections. Bill Hawkins P.S. This will not work well for small differences between PPS 1 and 2. It will work if the goal is 50% difference, or 90 degrees phase shift. -Original Message- From: Can Altineller Sent: Wednesday

Re: [time-nuts] algorithms and hardware for comparing clock pulses

2015-09-23 Thread Bill Hawkins
on. This is a lot of analog circuitry, but it will operate as fast as the parts are capable of switching and not at the whim of whatever the micro is doing. Hope that's useful. Probably already been done. Bill Hawkins -Original Message- From: Magnus Danielson Sent: Tuesday, September 22, 2015

Re: [time-nuts] Z380XA The saga of the aging 10811

2015-09-06 Thread Bill Hawkins
) in a USPS large Fixed Rate Priority Mail box for $18. Bill Hawkins -Original Message- From: time-nuts [mailto:time-nuts-boun...@febo.com] On Behalf Of Bob Benward Sent: Saturday, September 05, 2015 1:19 PM To: Time Nuts Subject: [time-nuts] Z380XA The saga of the aging 10811 Hi All, I would

Re: [time-nuts] FLL errors

2015-08-30 Thread Bill Hawkins
time, or adjusting by an hour for summer or winter time, then our needs for social time can be satisfied. I don't see the need to yank the oscillator around for social time with a time loop. Best regards, Bill Hawkins P.S. We're moving to a life care community that has no room for a time lab

[time-nuts] GPS TIMING SOLUTION CXR LARUS 545000-9

2015-08-30 Thread Bill Reed
. A Jones terminal for 48 vdc and Battery The chassis are 12 x 12 x 18 and 20 lbs. If you have cards here is the deal. $ 20.00 plus shipping (each). Negotiable Contact me offline for more details. Bill br...@otelco.net --- This email has been checked for viruses by Avast antivirus software. https

Re: [time-nuts] Vanguard Ultra precision Golden Oscillator

2015-08-23 Thread Bill Byrom
to commit customs fraud, report it to us. If the seller is faking custom forms, how do you know that anything they say is true? -- Bill Byrom N5BB ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman

Re: [time-nuts] HP5065A C-field current is temperature sensitive

2015-08-20 Thread Bill Byrom
a different ground, since there may be significant current and ground drop through the ground trace or plane. Be sure to have the covers in place so the airflow and thermal characteristics are as HP designed. -- Bill Byrom N5BB On Wed, Aug 19, 2015, at 04:45 PM, Poul-Henning Kamp wrote

Re: [time-nuts] GPS outage? 19:00-2100 UTC Tue

2015-08-20 Thread Bill Byrom
averages/sec using a RTSA or a bitmap statistical display. Again, I'm not trying to advertise anything in this forum but just give you a technical answer to your question. -- Bill Byrom N5BB On Thu, Aug 20, 2015, at 12:12 AM, Hal Murray wrote: What's the BNM column on that chart? What

Re: [time-nuts] GPS outage? 19:00-2100 UTC Tue

2015-08-19 Thread Bill Byrom
/SOFCalendar.aspx And note that except for certain government tests and operations, GPS jamming is illegal, and violations are prosecuted: http://www.gps.gov/spectrum/jamming/ -- Bill Byrom N5BB On Wed, Aug 19, 2015, at 03:11 AM, Hal Murray wrote: Most/all of my GPS toys stopped working

Re: [time-nuts] Fluke/Gigatronics 6060 series (6062A specifically)output amplitude cal constants

2015-08-11 Thread Bill Reed
I have a service manual for the 6080A/AN. The cal procedure may be the same. Bill Reed -Original Message- From: John Ackermann N8UR Sent: Tuesday, August 11, 2015 6:06 PM To: Discussion of precise time and frequency measurement Subject: Re: [time-nuts] Fluke/Gigatronics 6060 series

Re: [time-nuts] KS-24361 REF-0 standalone

2015-08-08 Thread Bill Hawkins
with a 28 volt 3 amp supply into a mini-rack using aluminum angle. My time lab is being downsized due to a move to senior living apartments. There's other stuff. Bill Hawkins Bloomington, MN 55438 -Original Message- From: time-nuts [mailto:time-nuts-boun...@febo.com] On Behalf Of Bob Camp Sent

Re: [time-nuts] NPR story on coupled pendulums

2015-07-31 Thread Bill Beam
PM, Bill Beam wb...@gci.net wrote: These University Of Lisbon Scientists have rediscovered a very old wheel. Old physics: Two coupled nearly identical harmonic oscillators have two stable states. They will operate with relative phase = zero or 180deg. How they are coupled is not an issue

Re: [time-nuts] NPR story on coupled pendulums

2015-07-30 Thread Bill Beam
energy one to the other. Regards On Wed, 29 Jul 2015 13:44:19 -0500, Bill Hawkins wrote: They talk about sound pulses affecting the pendulums. Sounds more likely that the mechanical vibration transmitted through the aluminum bar affects the escapements. Perhaps the 'tock' side generates

Re: [time-nuts] NPR story on coupled pendulums

2015-07-29 Thread Bill Hawkins
. That would soon have the clocks synchronized out of phase, provided the mounting arrangement did not absorb too much of the pulse energy. The situation is similar to synchronizing a TV vertical oscillator (running a bit slow) with the received sync pulse from the broadcast station, no? Bill Hawkins

Re: [time-nuts] Square to sine wave symmetrical conversion (part 2)

2015-07-28 Thread Bill Byrom
to PM conversion sources) in downstream amplifiers can be affected by audio frequency noise, I think that it's very important that such noise isn't allowed to phase modulate the desired RF signal. -- Bill Byrom N5BB On Mon, Jul 27, 2015, at 05:39 PM, Bob Camp wrote: Hi On Jul 27, 2015

Re: [time-nuts] 60Hz line data

2015-07-27 Thread Bill Byrom
minute and hour cards. A few years later I had a Radio Shack LED wristwatch. I see that 32,768 Hz crystals can now be purchased for US $0.15 each in lots of 100. -- Bill Byrom N5BB On Sun, Jul 26, 2015, at 07:08 PM, Dave Martindale wrote: It's not just synchronous-motor clocks that use line

Re: [time-nuts] 60Hz line data

2015-07-27 Thread Bill Hawkins
/real_time_system_conditions.html His chart (with permission) is at: http://home.earthlink.net/~schultdw/power/all.png In this case, the time reference was given by the power company. No cycles were counted. Regards, Bill Hawkins ___ time-nuts mailing list -- time-nuts@febo.com

Re: [time-nuts] 60Hz line data

2015-07-26 Thread Bill Byrom
/meetings/rms/keydocs/2011/0518/03_manual_time_error_correction_elimination_field_trial.doc So don't trust an AC synchronous motor clock in North America. -- Bill Byrom N5BB On Sun, Jul 26, 2015, at 07:08 AM, Bob Camp wrote: Hi That correlates quite well with data from the 1960’s before

Re: [time-nuts] E4437B phase noise spurs. Any ideas?

2015-07-17 Thread Bill Byrom
such as the ones you see in your screen capture. -- Bill Byrom N5BB Tektronix RF Application Engineer On Thu, Jul 16, 2015, at 04:15 AM, Wolfgang DL1SKY wrote: Hi, I just got a used/refurbished E4437B which I wanted to use as a all-purpose RF generator primarily for 3-4 GHz. Unfortunately, I'm

Re: [time-nuts] Wikipedia and Residual Phase Noise

2015-07-13 Thread Bill Byrom
I suggest this magazine article: Additive (residual) phase noise measurement of amplifiers, frequency dividers, and frequency multipliers http://www.holzworth.com/Aux_docs/PhaseNoise_Article_MWJ_Jun08.pdf -- Bill Byrom N5BB On Mon, Jul 13, 2015, at 02:20 AM, tim...@timeok.it wrote: Hi

Re: [time-nuts] Modulation Domain Analysis

2015-07-12 Thread Bill Byrom
assistance from others to read a floppy disk these days anyway! There is a small possibility that I have some old printed TVC501 application information which didn't get discarded during my last office move, and I will look for any such material during our move. -- Bill Byrom N5BB On Sat, Jun

Re: [time-nuts] 60Hz line data

2015-07-10 Thread Bill Hawkins
. It would be interesting to see what's really going on. What do other countries do? DC tie lines? Regards, Bill Hawkins -Original Message- From: Hal Murray Sent: Friday, July 10, 2015 2:45 AM To: time-nuts@febo.com Cc: Hal Murray Subject: [time-nuts] 60Hz line data My collection recently

Re: [time-nuts] beaglebones, time, web services

2015-07-05 Thread Bill Dailey
These are pricey but offer 5900 steps over 120 degrees. 0.02 degree per step. At least you could try a couple. If you have many of them it would get expensive quickly. http://www.horizonhobby.com/ds8231-ultra-precision-servo-jrps8231 Sent from mobile On Jul 5, 2015, at 7:46 AM, Jim Lux

Re: [time-nuts] GPS/UTC time

2015-07-04 Thread Bill Hawkins
and UTC time is correct for humans. ps. am I replying the way I'm supposed to with a new email and subject? Yes. Thank you. The archives will be better for it. Kind regards, Bill Hawkins P.S. It's true that the time difference changes very little (ignoring DST, which cancels out) per year

Re: [time-nuts] beaglebones, time, web services

2015-07-04 Thread Bill Dailey
Pysolar Sent from mobile On Jul 4, 2015, at 8:13 AM, Jim Lux jim...@earthlink.net wrote: I've got a project I'm working on to make a sophisticated sundial with moving mirrors. I've got a batch of Arduinos that move the mirrors to the appropriate places, given the current sun angle,

Re: [time-nuts] Jackson labs fury gpsdo with docxo for sale

2015-06-26 Thread Bill Dailey
The double oven? Sent from mobile On Jun 25, 2015, at 4:25 PM, Rhys D heyr...@gmail.com wrote: According to the brochure, they are only $750 new. Or am I missing something here? R On 26 June 2015 at 03:30, Mark Spencer m...@alignedsolutions.com wrote: Hi I'm wondering if there is

Re: [time-nuts] Two V(in)s walk into a bar...

2015-06-25 Thread Bill Hawkins
does not affect the other. The star ground may jump around, but all circuits are affected equally. Like your subject line. Better than 'strings,' I'm afraid. Bill Hawkins -Original Message- From: Neil Schroeder Sent: Wednesday, June 24, 2015 4:55 PM -- % - (snip) Main question

Re: [time-nuts] magnetic electronic components

2015-06-23 Thread Bill Byrom
and electromagnetic radiation. But that's more than you asked for. :) -- Bill Byrom N5BB On Mon, Jun 22, 2015, at 06:56 PM, Bob kb8tq wrote: Hi The problem with coils (inductors) is that they are indeed on the “other side” of the physics / electrical engineering divide. They are not unique

[time-nuts] ATT RFG-M-RB

2015-06-22 Thread Fuqua, Bill L
oscillator board. All thru hole parts . no SMT, including inside the rectangle metal can. 73 Bill wa4lav ___ 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] Modulation Domain Analysis

2015-06-17 Thread Bill Byrom
was powered by a TM500 mainframe. A number of other companies produced modules which were powered by TM500 mainframes. -- Bill Byrom N5BB On Wed, Jun 17, 2015, at 09:07 AM, Robert Gilchrist Huenemann wrote: Thank you for your comments. I was not aware of the TVC501. I  have ordered a copy

Re: [time-nuts] Modulation Domain Analysis

2015-06-16 Thread Bill Byrom
inputs. It was a rather specialized product, and I don't think we sold many of them. In 1995 we discontinued nearly the entire TM500/TM5000 line. Some of these products were sold by Tegam for a few years. -- Bill Byrom N5BB On Tue, Jun 16, 2015, at 05:17 PM, Richard (Rick) Karlquist wrote

Re: [time-nuts] lawnmower robots may be the end of VLF timekeeping

2015-05-11 Thread Bill Hawkins
how to use it. I'm sorry I expressed my annoyance, but I'm fighting an unknown infection, and that makes me testy. If someone could send me a reliable link to download SVG, I could try it after a full system backup. That's all extra work, but there's got to be a pony in there somewhere. Bill

Re: [time-nuts] lawnmower robots may be the end of VLF timekeeping

2015-05-10 Thread Bill Hawkins
Did the pictures have to be in SVG format? Is this only a problem for those who routinely use SVG? -Original Message- From: Poul-Henning Kamp Sent: Saturday, May 09, 2015 7:16 AM I spent some time capturing some data today. The measurements is from my $20 loop-antenna in the attic,

Re: [time-nuts] Tektronix Sample Heads

2015-05-04 Thread Bill Byrom
much higher accuracy and removes most of the ambiguity of multiple reflections. It also allows S-parameters to be extracted and SPICE models to be verified. This software isn't free - we have many more software engineers than hardware engineers these days! -- Bill Byrom N5BB On Sun, May 3, 2015

Re: [time-nuts] TrueTime AL-AK GPS receiver help

2015-04-30 Thread Bill Hawkins
is required. So is some discussion of the application with the manufacturer. Bill Hawkins -Original Message- From: time-nuts [mailto:time-nuts-boun...@febo.com] On Behalf Of Alex Pummer Sent: Thursday, April 30, 2015 12:56 PM To: Discussion of precise time and frequency measurement Subject: Re

Re: [time-nuts] TrueTime AL-AK GPS receiver help

2015-04-30 Thread Bill Hawkins
as the TrueTime GOES receiver. Antenna and converter will be hard to find, as they were probably junked separately. I would not expect the receiver to be set up by changing some dip switches. Now, if someone had the RF skills to build a GHz to MHz converter, it might work. Bill Hawkins

[time-nuts] RFTG-m-XO KS-24019 RS-422 Query

2015-04-28 Thread Bill Hawkins
version, not the newer ones. Any clues to documentation appreciated. Bill Hawkins ___ time-nuts mailing 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] Tektronix Sample Heads

2015-04-26 Thread Bill Byrom
accuracy with low jitter (a couple of ps RMS jitter in these older products). * The voltage measurement range is usually a few hundred millivolts peak-peak, while the damage level is at around 3 volts. -- Bill Byrom N5BB On Fri, Apr 24, 2015, at 10:42 PM, Ivan Cousins wrote: Since I

Re: [time-nuts] Visual clock comparison

2015-04-20 Thread Bill Beam
stopwatch runs at 40BPS. Bill Beam NL7F ___ time-nuts mailing 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] Visual clock comparison

2015-04-19 Thread Bill Hawkins
by. Or you could take a picture of both clocks, wait some minutes and take another picture. Simultaneous observation is unlikely, because it takes time to move the eye's focus from one clock to the other. Bill Hawkins -Original Message- From: Chris Albertson Sent: Sunday, April 19, 2015

Re: [time-nuts] Visual clock comparison

2015-04-18 Thread Bill Hawkins
IIRC, automobile driver's stopping distance includes 200 msec to process the need to stop. Our wetware is not particularly fast. Bill Hawkins -Original Message- From: time-nuts [mailto:time-nuts-boun...@febo.com] On Behalf Of Chris Albertson Sent: Saturday, April 18, 2015 12:51 AM To: t

Re: [time-nuts] Visual clock comparison

2015-04-18 Thread Bill Beam
between right and left ear will be perceived as sound coming from left or right, and not perceived as a time difference. Bill Beam NL7F ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman

[time-nuts] Immortal Power

2015-04-18 Thread Bill Hawkins
$195 for it? The catch is, the buyer has to supply the 96 VDC in batteries. Please write for details to b...@iaxs.net. Bill Hawkins ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo

Re: [time-nuts] National Positioning, Navigation, and Timing (PNT) Resilience and Security Act of 2015, H.R. 1678.

2015-03-28 Thread Bill Hawkins
Brooke, It's been my experience that local daylight time change criteria are varied and fluid. How would a LORAN (or GPS) transmitter set the DST bit for everybody? The leap second bit would be useful world-wide. Bill Hawkins -Original Message- From: Brooke Clarke Sent: Friday, March

Re: [time-nuts] Need advice for multilateration setup

2015-03-28 Thread Bill Hawkins
. It should be possible to use linear interpolation for the effect of acceleration during powered flight, since f=ma is a first order equation. Bill Hawkins -Original Message- From: Bob Camp Sent: Saturday, March 28, 2015 6:22 PM The point being that, to even get acceleration into the picture, you

Re: [time-nuts] Need advice for multilateration setup

2015-03-27 Thread Bill Hawkins
to do with a rocket was 1959, with an Aerobee-Hi launched from White Sands, NM. We used Doppler to get altitude for upper air density measurement. The rocket went off course horizontally (determined by radar) and was destroyed before it crossed the border. Bill Hawkins

[time-nuts] Lucent RFTG-m-XO failure to obtain GPS signal

2015-03-25 Thread Bill Hawkins
going on without hacking it from the basic bits? Would really like to solve this problem. Failing that, does anyone want them? Have the matching L105A RB boxes, which fire up and produce 15 MHz. Also female BNC to male SMA adapters. Many pictures available. Thanks for any help. Bill Hawkins

Re: [time-nuts] ADEV noise floor vs counter gate time

2015-03-22 Thread Bill Byrom
Was the website problem this past week? The main Tek US website was acting up for a while one day this week, but seems to be fine now. I have no insights on European access. -- Bill Byrom N5BB On Sun, Mar 22, 2015, at 07:10 AM, James via time-nuts wrote: Hi Bill, Thanks for the pointers

Re: [time-nuts] HP5335A GPIB questions.

2015-03-22 Thread Bill Byrom
will be able to get this to work with the right configuration of termination character and talk/listen turnaround. -- Bill Byrom N5BB On Sat, Mar 21, 2015, at 09:24 PM, Luke Mester wrote: I recently bought a HP5335A counter and have some questions about operating the instrument with GPIB. I

Re: [time-nuts] Obscure HP T/F instruments in ebay.fr

2015-03-21 Thread Bill Byrom
, but the random frequency adjustments by the networks and the switching between network and local station color burst reference clocks during local programming insertion caused us to abandon this project. This was about 7 years before I started at Tektronix. -- Bill Byrom N5BB On Fri, Mar 20, 2015

Re: [time-nuts] ADEV noise floor vs counter gate time

2015-03-21 Thread Bill Byrom
). The analog interpolation circuit uses a constant current charging a capacitor with a sampler and A/D converter. Counting a 100 MHz signal, this provides 12 digits of resolution per second of measurement interval. -- Bill Byrom N5BB On Wed, Mar 18, 2015, at 05:49 PM, James via time-nuts wrote: Hi

Re: [time-nuts] Obscure HP T/F instruments in ebay.fr

2015-03-20 Thread Bill Hawkins
Idiocracy seems predictive. Bill Hawkins P.S. The Pavek Museum of Broadcasting (radio) is still hanging on. -Original Message- From: Tom Van Baak Sent: Thursday, March 19, 2015 11:01 PM If that is the case, then this stuff belongs to a museum and not on ebay. IMHO. Hi Attila , I

Re: [time-nuts] Recording mains frequency

2015-03-01 Thread Bill Hawkins
be interesting to see how the daily load averages vary from region to region. Bill Hawkins ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.

Re: [time-nuts] No GPS satellites

2015-02-26 Thread Bill Hawkins
to make it work, as the mixer was in the base of the antenna. Bill Hawkins -Original Message- From: Tim Shoppa Sent: Wednesday, February 25, 2015 7:56 PM To: Discussion of precise time and frequency measurement Subject: [time-nuts] No GPS satellites Yes, the XL-DC and other Truetime models

Re: [time-nuts] OXCO insulation

2015-02-24 Thread Bill Hawkins
to external temperature changes, called load disturbances. Hope this was of some use. Bill Hawkins ___ time-nuts mailing 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] D term (was no subject)

2015-02-09 Thread Bill Hawkins
Many thanks for the link, Attila. One of the authors of Volume 25 was Nichols of Ziegler-Nichols tuning fame (q.v.) Bill Hawkins -Original Message- From: Attila Kinali Sent: Monday, February 09, 2015 4:14 AM And here the link to the pdf's in case anyone is looking: https://www.jlab.org

Re: [time-nuts] T.I. questions

2015-02-05 Thread Bill Hawkins
the amplitude of the dither is the size of that dead space at a frequency that will be lost in the average. I can see how this would work for a servo system, but how can a counter display more resolution than its least significant digit? Bill Hawkins -Original Message- From: time-nuts [mailto:time

Re: [time-nuts] 510 doubler

2015-02-05 Thread Fuqua, Bill L
Ok, lets get real here. Temperature variations, could cause a phase shift but a very very slow one, the degree would depend on the Q of the filter, temperature coefficient of the crystal, and capacitor and how well it is isolated from turbulent air. I am not new to the game of making

Re: [time-nuts] time-nuts Digest, Vol 127, Issue 5

2015-02-04 Thread Fuqua, Bill L
and discrete capacitors. An complex LC filter could be constructed but it requires a number of stages along with careful selection of components. 73 Bill wa4lav Message: 4 Date: Wed, 04 Feb 2015 06:57:48 -0500 From: Charles Steinmetz csteinm...@yandex.com To: Discussion of precise time

Re: [time-nuts] 510 doubler

2015-02-03 Thread Fuqua, Bill L
73 Bill wa4lav ___ time-nuts mailing 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] 10544A vs. 10811

2015-02-01 Thread Bill
Thanks to all for the inputs. I have both but will focus on the 10811 since the lowest phase noise and close in spurious is my objective...Bill On 2/1/2015 12:54 AM, Bruce Griffiths wrote: Since the 10544A uses a PWM oven controller there are significant oven PWM frequency related

[time-nuts] 10544A vs. 10811

2015-01-31 Thread Bill
I have a choice. Can I assume the 10811 is the better OCXO for phase noise and ADEV compared with the 10544A? Thanks and regards...Bill ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman

Re: [time-nuts] Maser on a chip

2015-01-26 Thread Bill Byrom
at a reasonably S/N. The device maser cavity is superconducting. I agree that this is an initial proof of concept demonstrating masing with quantum dots. -- Bill Byrom N5BB Tektronix RF Application Engineer On Tue, Jan 20, 2015, at 01:51 AM, Attila Kinali wrote: On Sun, 18 Jan 2015 22:59:57 + Mark

Re: [time-nuts] LTE Lite time error

2015-01-26 Thread Bill Beam
Odd indeed. My LTE-lite is one second late, appears to have already added the pending leap second. I can compare with four other GPS timeing receivers using time pulse on DCD line. The NMEA data reports in error. I am awaiting reply from JL. This is not good for an eBay sniper Bill

Re: [time-nuts] LTE Lite time error

2015-01-26 Thread Bill Beam
$PSTI,00,2,0,4.6,,*30 snip The time data is all a second late so they appear to have a serious issue. Le 26 janv. 2015 +  02:47, Bill Beam wb...@gci.net a +ªcrit : snip Odd indeed. My LTE-lite is one second late, appears to have already added the pending leap second. I can compare

Re: [time-nuts] R: Re: Racal Dana 1992 universal counter

2015-01-23 Thread Bill Reed
I have an NI GPIB board ( $ 29.00 on Ebay ) with an ISA connector. The computer I use has Win 98SE with one ISA and several PCI. NI has two short programs ( ULI and Ibconf ) that will allow QB45 to interface with the ISA board. I have interfaced with several instruments with no trouble ( HP

Re: [time-nuts] Racal Dana 1992 universal counter

2015-01-22 Thread Bill Hawkins
standard or military. Can't be more specific until I dig out the manual. The Phase A-B feature was very useful for comparing precision oscillators. Bill Hawkins -Original Message- From: christophena...@virgilio.it Sent: Thursday, January 22, 2015 6:15 AM Hello everybody, i am looking

Re: [time-nuts] DDS on AD9852

2015-01-17 Thread Bill Byrom
to a sinewave, although the amplifier might still be in compression and generating significant harmonics. The amplifier must be terminated in 50 ohms for it to work properly. -- Bill Byrom N5BB On Sat, Jan 17, 2015, at 01:51 AM, Tom Miller wrote: - Original Message - From: d0ct0r

Re: [time-nuts] Sources for Mission Time Clock

2015-01-11 Thread Bill Hawkins
. There are standard ways to handle NTP, IRIG-B, and 1 PPS. Do you need to hold the countdown the way NASA does? Does the clock provide the electrical signal to launch or deploy? Bill Hawkins -Original Message- From: Martin A Flynn Sent: Sunday, January 11, 2015 9:31 AM I am looking for a GMT/GET

Re: [time-nuts] Mechanical 1PPS Oscillator Disciplining

2015-01-10 Thread Bill Hawkins
or is there too much noise? Am I the 420,000th person to try this? Any answers appreciated. Bill Hawkins -Original Message- From: time-nuts [mailto:time-nuts-boun...@febo.com] On Behalf Of Andy Bardagjy Sent: Friday, January 09, 2015 11:22 AM To: Discussion of precise time and frequency

Re: [time-nuts] Any reason not to use one power amplifier and splitter for distribution amplifier?

2015-01-04 Thread Bill Hawkins
distribution amp? Put another way, why do counters like the Racal 1992 allow you to choose 50 ohm or high impedance at the input? Please, no take it on faith audiophile answers. HNY. Bill Hawkins ___ time-nuts mailing list -- time-nuts@febo.com

Re: [time-nuts] Any reason not to use one power amplifierand splitter for distribution amplifier?

2015-01-04 Thread Bill Hawkins
their equipment from eBay. Bill Hawkins -Original Message- From: time-nuts [mailto:time-nuts-boun...@febo.com] On Behalf Of Bruce Griffiths Sent: Sunday, January 04, 2015 3:39 AM To: Discussion of precise time and frequency measurement Subject: Re: [time-nuts] Any reason not to use one power

[time-nuts] EZGPIB / ProfiLab

2014-12-26 Thread Bill Reed
a stored file)? If anybody has any experience with ProfiLab. I would like to know it capabilities before procuring. I have the demo but it seems to be missing some dll’s that are required. Contact me offline if you do not want a new thread. Bill Reed br...@otelco.net --- This email has been

Re: [time-nuts] Hydrogen Maser Kit part 3

2014-12-20 Thread Bill Hawkins
. That happened in 1999, and my task list has been full since then. So it goes. Best regards, Bill Hawkins -Original Message- From: cdel...@juno.com Sent: Friday, December 19, 2014 11:30 PM Hi everyone, The Maser Kit is progressing. Old Teflon removed, Bulb cleaned, Ion pumps ready to test

Re: [time-nuts] GPS position averaging

2014-12-15 Thread Bill Hawkins
one foot or 30 cm is equivalent to 10E-9 second. Also consider the 'averaging' period of the PLL filter in the disciplined oscillator. I'm no expert, especially not in math. These hints are thoughts that come to mind. Bill Hawkins -Original Message- From: Ole Petter Ronningen Sent

Re: [time-nuts] 10MHz LTE-Lite - PPS accuracy?

2014-12-08 Thread Bill Dailey
Or use 1ns per foot of antenna cable. That will get you closer. Sent from mobile On Dec 8, 2014, at 8:16 AM, David J Taylor david-tay...@blueyonder.co.uk wrote: Hi On *most* GPSDO’s, the simple answer is “there is a cable delay adjustment to align it”. Without some sort of reliable

Re: [time-nuts] Questionable question about the Lucent RFTGs

2014-12-04 Thread Bill Hawkins
The Motorola 68000 CPU was available in 1982 (and a fine processor it was at the time). Aren't these units vintage 2000? Bill Hawkins -Original Message- From: Doug Ronald Sent: Thursday, December 04, 2014 2:03 PM I have sort of a dumb question about the Lucent KS-24361 RFTGs. Why do

Re: [time-nuts] 10 MHz Oscillators

2014-12-03 Thread Bill
Hi Martyn, Would you dare to share where you get your crystals?? Regards...Bill -Original Message- From: time-nuts [mailto:time-nuts-boun...@febo.com] On Behalf Of Martyn Smith Sent: Wednesday, December 03, 2014 1:39 AM To: time-nuts@febo.com Subject: [time-nuts] 10 MHz Oscillators

Re: [time-nuts] eBay seller has Z3801A upgraded to 58503A

2014-11-27 Thread Bill Dailey
Get the Fury. Plug and play. Sent from mobile On Nov 27, 2014, at 4:55 PM, Dr. David Kirkby (Kirkby Microwave Ltd) drkir...@kirkbymicrowave.co.uk wrote: There's a seller on eBay selling what he says is Z3801A upgraded to 58503A. One or two things have made me a bit suspicious of that

[time-nuts] thoughts on lightning arrestors

2014-11-27 Thread Bill Hawkins
is much more accurate than lightning arrestor. Yours for safe time research, Bill Hawkins -Original Message- From: Arthur Dent Sent: Wednesday, November 26, 2014 6:42 PM To: time-nuts@febo.com Subject: [time-nuts] lightening protection of a GPSDO system / optical isolated distribution amp

Re: [time-nuts] NIST isolation amplifiers

2014-11-25 Thread Bill
Hi Charles, Thanks a bunch for the comments and the article reprints. This is just what I was looking for to get started on my distribution amplifier. Regards...Bill -Original Message- From: time-nuts [mailto:time-nuts-boun...@febo.com] On Behalf Of Charles Steinmetz Sent: Tuesday

Re: [time-nuts] NIST isolation amplifiers

2014-11-25 Thread Bill
Hi Dave, That's exactly the approach I'm going to use. Outputs that go to instruments that might see the low noise and then outputs that go to devices that aren't phase noise sensitive like counters, scopes, pulse generators and others. Regards...Bill -Original Message- From: time

Re: [time-nuts] Low Noise 10 MHz Distribution

2014-11-24 Thread Bill
Hi Martyn, I looked at the specifications. Very nice indeed!! I will contact you off list for more info...Bill -Original Message- From: time-nuts [mailto:time-nuts-boun...@febo.com] On Behalf Of Martyn Smith Sent: Monday, November 24, 2014 2:31 AM To: time-nuts@febo.com Subject: [time

Re: [time-nuts] Low Additive Phase Noise 10 MHz Amps

2014-11-24 Thread Bill
residual phase noise will contribute lower additive noise to another device. I think additive phase is a more apt description of the noise within a system being used, rather than reference to the measurement system of a single device. Oh boy, I hope I didn't open up a can of worms. Regards...Bill

Re: [time-nuts] Low Additive Phase Noise 10 MHz Amps

2014-11-24 Thread Bill
Hi Luciano, Thanks for sharing that data. Do you have a link to the NIST distribution amplifier? When you're ready I hope you'll share more data on your MDT123 design. Regards...Bill -Original Message- From: time-nuts [mailto:time-nuts-boun...@febo.com] On Behalf Of tim...@timeok.it

[time-nuts] Low Additive Phase Noise 10 MHz Amps

2014-11-23 Thread Bill
What's the latest opinion (data) on available low additive phase noise 10 MHz amplifiers for 10 MHz distribution? Regards and thanks.Bill ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to

Re: [time-nuts] Low Additive Phase Noise 10 MHz Amps

2014-11-23 Thread Bill
thanks...Bill -Original Message- From: time-nuts [mailto:time-nuts-boun...@febo.com] On Behalf Of Bob Camp Sent: Sunday, November 23, 2014 1:09 PM To: Discussion of precise time and frequency measurement Subject: Re: [time-nuts] Low Additive Phase Noise 10 MHz Amps Hi For any “real world

Re: [time-nuts] Low Additive Phase Noise 10 MHz Amps

2014-11-23 Thread Bill
and do some prototyping and noise testing and see what I come up with. Regards...Bill -Original Message- From: time-nuts [mailto:time-nuts-boun...@febo.com] On Behalf Of Bob Camp Sent: Sunday, November 23, 2014 7:08 PM To: Discussion of precise time and frequency measurement Subject: Re

Re: [time-nuts] strange carrier

2014-11-14 Thread Bill Hawkins
work on this one, though. Bill Hawkins ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.

Re: [time-nuts] HP 3586B Info

2014-11-13 Thread Bill Reed
Hi Perrier, Thanks, I would like the documents. I have a HP 3586B and its sensitivity is right on for the 20 Hz and 400 Hz bands but is about 30 dB low for the 3100 Hz band. I have manuals but have not found the fault. Do you have suggestions? Regards, Bill br...@otelco.net -Original

Re: [time-nuts] connectors

2014-11-08 Thread BIll Ezell
connector. I’ve been doing this for 40 years and I still mess it up on a regular basis. We also seem to get it wrong from time to time when we lay out connector connections on pc boards, but that’s another story altogether ….. -- Bill Ezell -- The day Microsoft makes something that doesn't

Re: [time-nuts] Lucent KS-24361 GPSDO arrived today several questions

2014-11-07 Thread Bill Riches
Hi Bob and group, Where are you obtaining Satstat and what windoze version will it work on? XP, W7 32 or 64 bit? XP I guess? Bill Riches Cape May -Original Message- From: time-nuts [mailto:time-nuts-boun...@febo.com] On Behalf Of Bob Stewart Sent: Friday, November 07, 2014 12:03 AM

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