Re: [time-nuts] Symmetricom 5115

. Regards, Jeffrey Pawlan ___ 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] Missing GPS satellites

On Thu, 25 Mar 2010, Magnus Danielson wrote: Dear Raj, Oh, sorry, needed a few extra. Wanted to recover the rubidiums and put some on Ebay. I gave a lecture about antennas for operation on 1296MHz last week and mentioned that my vacuum tube power abplifier was damaged by a gassy tube. I

Re: [time-nuts] AMC-123 patent (was: Re: Phase Noise of 74AC gates)

, and NF are very good, both the reverse isolation is poor. Regards, Jeffrey Pawlan ___ 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] OT - RF Mailing list

a member or an out-of-the-area friend. There are no dues this year for members. Rick - fill out the memberform 73, Jeffrey Pawlan WA6KBL ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman

Re: [time-nuts] 60Hz mains clocking in computers

was unnecessary. I was young and not business savy so I did not know to have them sign a non-disclosure. The next year, they came out with exactly what I had showed them. Best Regards, Jeffrey Pawlan ___ time-nuts mailing list -- time-nuts@febo.com

Re: [time-nuts] acctime2000,symmetricom/Hp 58534 connector source

On Sun, 6 Dec 2009, Stanley Reynolds wrote: Newark has Farnell components IMC26-2212X which fit. SKU 93K6411 Price: $6.94 pins and hood are ordered separate Stanley watch out for Newark's shipping and Handling charge. I had ordered a connector from them several years ago and was upset

Re: [time-nuts] acctime2000,symmetricom/Hp 58534 connector source

Thank you for the update. My order was over $50 but perhaps since then they got too many compaints and decided to change their policy. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to

Re: [time-nuts] PC time

On Wed, 25 Nov 2009, Bob Camp wrote: Hi Doesn't everybody run OCXO's for the clock in their PC? Bob you should make one of those text displays on the bottom of your email that reads: my PC clock is controlled by an HP10811 That distinguishes Time-Nuts members from the general public.

Re: [time-nuts] Calculating frequency differences using Lissajou figures

or stated in another way: your two sources differ by 5.5 parts in 10^-10 Well within the specification for the Rb. But to be precise, but if you wanted to know the absolute accuracy of the Rb then you would need to know the accuracy of the GPSDO at that moment in time. Jeffrey Pawlan

Re: [time-nuts] WWV Clock

My clock changed. I am in Calif. 73, Jeffrey Pawlan WA6KBL ___ 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] Fundamental limits on performance

This is the specialization of Judah Levine at NIST. 73, Jeffrey Pawlan ___ 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] Have Austron 2110 manual, looking for Datum 2110C manual

at the titlepage and it is revision L and was from Sept 1988. I do not know whether Datum revised it after that. Regards, Jeffrey Pawlan Pawlan Communications ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https

Re: [time-nuts] Sound Cards for locking to GPSDO 10 MHz references

which allows you to use WSJT. Please let me know exactly what you are doing. I also do not know how you are using 5 milliHertz with WSJT since the group of discrete tones occupy more bandwidth. 73, Jeffrey Pawlan WA6KBL ___ time-nuts mailing list

Re: [time-nuts] Ultra low noise Pierce oscillator???

My best crystal oscillator designs are modified Pierce. But I definitely recommend using a low noise BJT else you will have 1/f noise. Jeffrey Pawlan WA6KBL Pawlan Communications ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe

Re: [time-nuts] Enrico Rubiola's new book

I had hoped to meet him at the UFFC last Spring but he cancelled at the last moment owing to a family emergency. Take a look at his webpage: http://www.femto-st.fr/~rubiola/ Jeffrey Pawlan WA6KBL sr member IEEE UFFS MTT ___ time-nuts mailing

Re: [time-nuts] ADEV secondary standard

You have just described the current preferred method used by NIST for calibrating phase noise measurements. ___ 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

Re: [time-nuts] ADEV secondary standard

for one offset frequency. In fact, it is slighty more dependable and accurate being a single tone. Its only disadvantage is that one needs to repeat this at every offset you want to calibrate so that is why the noise method was invented. Jeffrey Pawlan

Re: [time-nuts] Checking accuracy of Rubidium standards

or two microwave synthesized signal generators, then you can apply the 10MHz sources to the ext ref inputs of each of these signal generators and then proceed as in 1) or 2) I have done comparison at 26GHz this way so I have a bit more resolution. 73, Jeffrey Pawlan WA6KBL

Re: [time-nuts] Checking accuracy of Rubidium standards

that can display 1E-9 or 1E-10 in just one second of your time. To get finer than that, you patiently wait. 73, Jeffrey Pawlan WA6KBL ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time

Re: [time-nuts] OT- RK devices?

They were a competitor to minicircuits and others. Tried to win by being very inexpensive. ___ 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

Re: [time-nuts] Thunderbolt monitor

had one become dim or burn out. The displays in my appliances are on even when the rest of the appliance is off. I have never seen one become dim even after 15 years of on-time. I look forward to your project. 73, Jeffrey Pawlan, WA6KBL ___ time

Re: [time-nuts] 20logN was Re: phase noise questions

response to coherent PM sidebands and PM noise sidebands. Bruce As seen in the acknowledgements, it was I who initially proposed this idea to Fred Walls. We exchanged letters and phone calls then I visited him in Boulder to discuss the measurements. Jeffrey Pawlan

Re: [time-nuts] answers

to time-nuts. Regards, Jeffrey Pawlan ___ 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] ** SPAM ** Re: Bruce's link

of the schematic. When you click on that, you get a 404 not found plus you get a popup ad. Worse still, if you click on the schematic to enlarge it, instead of getting the schematic you get a full page PORN ad. 73, Jeffrey Pawlan WA6KBL Pawlan Communications Spam detection software, running

[time-nuts] re low noise regulators

the reference to ground. It does wonders for getting rid of traces of hum. Just for your collection I will send John two App notes in PDF form to post. They cover the subject of reducing spikes and switching regulator noise. regards and 73, Jeffrey Pawlan WA6KBL Pawlan Communications

Re: [time-nuts] OT: Prologix GPIB and HP3478A...

that this was the right way to take readings. It may well have been to avoid the timing issues you presented. Regards, Jeffrey Pawlan ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo

Re: [time-nuts] manual scan.

); SAEximRunCond expanded to false Errors-To: [EMAIL PROTECTED] RETRY Yes, I will do that. 73, Jeffrey Pawlan WA6KBL ___ 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] OT: Need HP 7475A Drivers manuals

and refillable accessories, a list 26 items long. Anyone interested? I would rather sell them to friends here than on ebay. 73, Jeffrey Pawlan WA6KBL ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin

Re: [time-nuts] Help with LPRO 101

in a second. 73, Jeffrey Pawlan WA6KBL ___ 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] Crystal Ageing

be partially a result of the etching. Others thought it was caused by microscopic impurities in the quartz. Others talked about the effects of plating. Rick wrote about the microcrystalline structural defects. Perhaps all of these contribute and it is unpredictable how they will add together. 73, Jeffrey

Re: [time-nuts] TV sync

Hi Tom, a related very interesting experiment is to take the Horizontal Sync signal from an old Tube-type TV, and feed it to a frequency counter with GPSDO time base (preferrably). Got to be careful about the high voltages inside the TV though! BTW: it's not 15374KHz, there are some

Re: [time-nuts] from Sputnik to CD

was not critical hence a double oven crystal was not necessary. Regards, Jeffrey Pawlan ___ 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] from Sputnik to CD

); SAEximRunCond expanded to false Errors-To: [EMAIL PROTECTED] RETRY You are way incorrect in your reply. Since this is off-topic I will limit my reply to a few salient points. High definition CD is not at 44.1KHz It is much higher so your ratio is off. The A/D and D/A converters they use are

[time-nuts] update on SARSAT and Galileo

-Moon-Earth communications which are always done from 1296 - 1297MHz and our antennas are pointed at the moon but the antenna beamwidth is usually 10 - 20 degrees wide. Jeffrey Pawlan ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go

Re: [time-nuts] Sputnik

designed the ground station receiver and tracking system and was sent by NASA to Moscow in 1982 for the final test in a lab with all the hardware from each country. Regards, Jeffrey Pawlan ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe

Re: [time-nuts] oscillator aging

frequency recently as I am using a disciplined Austron standard with a loran-c receiver for my lab. The meter on the HP107 panel says it is still putting out the right amount of RF power. No repairs in 50 years; that is reliability. Regards, Jeffrey Pawlan

Re: [time-nuts] HP E1938 documents

on Brooke's website. Regards, Jeffrey Pawlan WA6KBL Pawlan Communications ___ 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] Fw: UNIQUE CLOCK

); SAEximRunCond expanded to false Errors-To: [EMAIL PROTECTED] RETRY On Tue, 11 Sep 2007, Rex wrote: That site seems to be browser-dependent. I works under IE but not Firefox. Do others see the same behavior? Rex, it works fine under the new mozilla version called Seamonkey. I have

Re: [time-nuts] Austron 1120 questions

are both tied together. Perhaps one is the oscillator and the other is the oven. 73, Jeffrey Pawlan WA6KBL ___ 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] Neat toys on eBay for PN measurement

generators from Picosecond Pulse Labs. Yes, it is just a matter of economics. I seem to recall them telling me that in small quantities (10pcs) the price was around $8000. That was last year so maybe the price has come down somewhat. 73, Jeffrey Pawlan WA6KBL

Re: [time-nuts] new paper on Allan Variance errors

is to drive up to the Stanford Univ engineering library and photocopy them. The time spent plus the parking cost me a lot more than $35 and I think IEEE knows that and thus increased their price. Regards, Jeffrey Pawlan ___ time-nuts mailing list time-nuts

[time-nuts] new paper on Allan Variance errors

reciprocal counter to measure short term stability of a source. This paper shows that the result is often off by 33% and can be off by more than an order of magnitude, depending on the amount of frequency and phase noise in the DUT. Regards, Jeffrey Pawlan Pawlan Communications

Re: [time-nuts] HP 5061A at auction

The label on the front makes me worried that is says far more than the word Good. I think Telogy would not be getting rid of this if the tube were good. ___ time-nuts mailing list time-nuts@febo.com

Re: [time-nuts] old freq standards

Since Symmetricom has recently purchased the entire line of frequency and time products from Agilent, Symmetricom has already announced that they will discontinue support of most of them. They are notoriously unhelpful even for current products they manufacture. Other old manufacurers have

Re: [time-nuts] sound card accuracy and html in messages

because I am running Sun Solaris (unix). I thank the list owner for not allowing HTML. We do not need pretty formatting, colored words, or Microshaft Office commands that usually take a minimum of 30k just to send one sentence! 73, Jeffrey Pawlan

Re: [time-nuts] Upper limit on phase noise from two oscillators.

) to not overload the inout of the soundcard if it is DC coupled. I hope this helps but I need to get back to work now. 73, Jeffrey Pawlan ___ time-nuts mailing list time-nuts@febo.com https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts

[time-nuts] re multiplication to measure phase noise

cavities suspended in liquid helium as the resonant structures. These are in the 10-12 GHz range so you would need to then multiply them up. There are lots of papers in the IEEE UFFC Transactions. 73, Jeffrey Pawlan ___ time-nuts mailing list time

Re: [time-nuts] Book: Phase Noise in Signal Sources by Robins.

On Mon, 25 Apr 2005, David Kirkby wrote: I won an auction on eBay for a book PHASE NOISE IN SIGNAL SOURCES, IEE, by W P ROBINS. Yes I have this book and it has been helpful but not always correct. I do recommend owning it though. Jeffrey Pawlan

Re: [time-nuts] Phase noise measurements - getting started.

the criterion. Those systems do not contain the comparison signal sources unless you are measuring something with phase noise much poorer than the 10811. Then they are simply using a moderately low noise synthesised signal generator as one of the comparison sources. 73, Jeffrey Pawlan, WA6KBL IEEE, MTT

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

. 73, Jeffrey Pawlan, WA6KBL ___ time-nuts mailing list time-nuts@febo.com https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts