Re: [time-nuts] PRS10 Information and help needed

Thank you very much Mark! I have to remark, that your program is really universal and outstanding! I am using LH since I have Trimble Thunderbolt from the group buy long years now. Regards Arnold Am 01.03.2018 um 00:32 schrieb Mark Sims: Lady Heather v6 Beta also has PRS10 support. You

Re: [time-nuts] PRS10 Information and help needed

are a little lower than the one I have been looking at? regards, Mike Le 28 févr. 2018 à 22:14, Arnold Tibus <arnold.ti...@gmx.de> a écrit : Hello Michael and Tom, thanks for the quick reaction! Of course I did already think that the rubidium cell doesn't work any more, but then I was asto

Re: [time-nuts] PRS10 Information and help needed

As I have the impression that my very small data pdf was not transferred, I add therefore this explanatory data again but in open document format odt with 10 kB. Hopefully this will pass now. Arnold Am 28.02.2018 um 22:14 schrieb Arnold Tibus: Hello Michael and Tom, thanks for the quick

Re: [time-nuts] PRS10 Information and help needed

, there are lots of diagnostics available. Cheers Michael On Thu, 1 Mar 2018 at 5:47 am, Arnold Tibus <arnold.ti...@gmx.de> wrote: Hello fellow timenuts, for my old PRS10 I need some information and help with technical informations. I have this item bought quite some years ago and I have manufa

[time-nuts] PRS10 Information and help needed

Hello fellow timenuts, for my old PRS10 I need some information and help with technical informations. I have this item bought quite some years ago and I have manufactured an interface cable with the special connector last year. Did work fine. Taken out of storage I do get anymore the lock and

Re: [time-nuts] FRK

Bert, you may upload it to this directory, which timenuts can then access and download as well, using this directory also: https://my.hidrive.com/share/5fohndsi4k The up- and downloads are much faster and there is no Mbit limit. I will keep it open for a while. Give me a note if this ok for you.

Re: [time-nuts] AM vs PM noise of signal sources

Am 07.01.2018 um 16:33 schrieb jimlux: On 1/6/18 6:12 PM, Dana Whitlow wrote: One point about oscillator design I've not yet seen mentioned is this: the limiter must not degrade the resonator Q when in action.  Hence, a pair of diodes connected in parallel back to back, across a shunt

[time-nuts] Thunderbolt - Lady Heather altitude does report abt 240m too high

Hello fellow time nuts, after the thunderbolt roll over problem I run the survey control in Lady Heather (48h). Since then I am getting always a wrong elevation number for my qth. Does anybody know the reason for that behavior? Is there a solution to get again the correct value? Kind regards

Re: [time-nuts] Thunderbolt - trouble locking with some types of antennas

Hello Jerry, I think the problem is not at the antenna, I consider the 58532A to be a lot better than these smal patch antennas. But the point is that modern receivers have a significant better sensivity! In my opinion, indoor position of any kind of antenna is not a good solution if you want to

Re: [time-nuts] Power connectors continued

. Bob On Jun 22, 2017, at 6:54 PM, Arnold Tibus <arnold.ti...@gmx.de> wrote: Hello, I can second Magnus and want to throw in some more details. Cannon, Deutsch, Bendix, Souriau, Matrix, Amphenol, etc. etc. are (big) companies manufacturing all kind of connectors and are n o t co

Re: [time-nuts] Power connectors continued

Hello, I can second Magnus and want to throw in some more details. Cannon, Deutsch, Bendix, Souriau, Matrix, Amphenol, etc. etc. are (big) companies manufacturing all kind of connectors and are n o t connector type designations! Important are the type numbers of the manufacturer or higher

Re: [time-nuts] GPS discipline oscillator vs phase lock

sorry about, but who is 'lifespeed', a robot or a real person with a natural name? many thanks, 73, Arnold, DK2WT Am 17.06.2017 um 23:07 schrieb Lifespeed via time-nuts: Yes, one has to lock them at a high reference frequency so as to avoid multiplied-up phase noise. I can manage the

Re: [time-nuts] Time Dilation tinkering

Am 22.03.2017 um 15:56 schrieb jimlux: > On 3/22/17 4:04 AM, Angus wrote: >> On Tue, 21 Mar 2017 13:08:56 +0100, you wrote: >> >>> On Tue, 21 Mar 2017 13:38:51 +1100 >>> Hugh Blemings wrote: >>> This got me to wondering if a Rubidium based standard might do the trick

[time-nuts] galileo-atomic-clock-failures

Perhaps of general interest for time-nuts: http://spaceflight101.com/galileo-atomic-clock-failures/ https://www.spaceintelreport.com/galileo-clocks kind regards Arnold, DK2WT ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to

Re: [time-nuts] Lady Heather Version 5 is now available

cause my lucent box is there on serial port 3. Lady Heather > auto detected and all is well. > > Many thanks to Mark and John for this great work! > > > 73 > Mike N2LYM > > > > > On Sun, Dec 11, 2016 at 06:49 PM, Arnold Tibus wrote: > >> John, >> I

Re: [time-nuts] Lady Heather Version 5 is now available

John, I am a none in programming, but can anybody tell me why it does work? I tried it now several times with different settings for the time zone ... I am running WIN7 pro 64 and the program did install in Program Files(86). Editing the heather.cfg in this directory does have no effects ... ???

Re: [time-nuts] Lady Heather Version 5 is now available

> You should be able to read/write this copy. At least that was my experience > during installing. > > > > > -=Bryan=- > > > > From: time-nuts <time-nuts-boun...@febo.com> on behalf of Arnold Tibus > <arnold.ti...@gmx.de>

Re: [time-nuts] Lady Heather Version 5 is now available

Hello Mark, many thanks for your immense and invaluable work! I am using the trimble thunderbold together with LH version 3 all the last years with success, I like your program very much. I downloaded and installed today the version 5, but I have some problems because it looks like my windows 7

Re: [time-nuts] Old xtal filter

Joe, if I read correct, the BW of this filter is only 10 Hz (cps), not 100 Hz, @ carrier frequency of 100 kHz. Such a low bandwidth is useful to work with very faint signals. The low BW reduces noise, but the received signal must be very slow to pass the filter and the transmitter/ receiver

Re: [time-nuts] Old xtal filter

Joe, if I read correct, the BW of this filter is only 10 Hz (cps), not 100 Hz, @ carrier frequency of 100 kHz. Such a low bandwidth is useful to work with very faint signals. The low BW reduces noise, but the received signal must be very slow to pass the filter and the transmitter/ receiver

Re: [time-nuts] RG 6 U couplings

proper > tool > to “compress” them. I have found that some of the tools are pretty brand > specific. > You may need to match the tool to the connector. > > Bob > >> On Dec 5, 2015, at 11:38 PM, Arnold Tibus <arnold.ti...@gmx.de> wrote: >> >> Hi Be

Re: [time-nuts] RG 6 U couplings

Hi Bert and the group, I can highly recommend the so called compression F-connectors. There are a lot of brands out, but my personal favorite is the Waterproof CX3 Quickmount from Corning Cabelcon, because they have very good rf and mechanical data. They are not only weatherproof and corrosion

Re: [time-nuts] Jackson Labs M12M Replacement Receiver

Hello Keith, I am sorry to tell you, I did not yet receive the module, don't know what all hells customs is doing with it! My idea is to add a good OCXO like a hp10811, similar to be used as my good old trimble thunderbolt using the laptop. Perhaps I will need then some support for. Many

Re: [time-nuts] HP Panel colors

Buen giorno Luciano and the group, perhaps I can help you and others with some infos concerning hp colors. I still have 3 original examples from hp with specification and P/N from 1983. Most important data as excerpt: ## This specification establishes the requirements for pigment

Re: [time-nuts] wtd: WWVB info...

Burt, according the manual for this clock, the typical operating time for one 1.5V AA battery is 3 years! (but may last longer with good battery quality!) link for the manual: http://www.junghanswatchesusa.net/assets/images/manuals/alarm.pdf Unfortunately I cannot find the equivalent for DCF

Re: [time-nuts] Tektronix Sample Heads

Many thanks Ivan! Very interesting documents for beginners (and those who did forget it already ;-) 73 Arnold Am 28.04.2015 um 08:28 schrieb Ivan Cousins: A link to the Sampling Oscilloscope Circuits book is: http://proxy.w140.com/tek_concepts_sampling.pdf Another document that is even more

Re: [time-nuts] Linear voltage regulator hints...

Am 08.12.2014 um 19:18 schrieb Dan Kemppainen: Hi, In playing with some oscillators and a GPSDO here, I think I'm seeing a voltage sensitivity issue. So, I started looking at the output voltage of various regulators vs. temp. Using standard LM/UA type linear regulators and some LDO's, they

Re: [time-nuts] Interesting frequency standard project

I don't have any problem to get the schematic, everything is accessable. regards Arnold, DK2WT Am 05.07.2014 05:52, schrieb Max Robinson: That's an interesting looking PC board but the receiver schematic link is dead. The front page keeps coming back up. I'm going to bookmark the page

Re: [time-nuts] Weather/units question for European members

Hi Mark, I second Paul Henning, here in Europe we use officially the SI standard, does mean m/s and hPa! Privately used other units are another thing like km/h or units Beaufort and mb (millibar), but not official. If possible use always the international SI units and as personal choice km/h,

Re: [time-nuts] OT - Need a German speaker

Hello Joe, I see that Bert and cfo (don't know his name, sorry) gave you already good informations. I have an account there and a continuous order for the magazine. It is easy as already mentioned to register with the personal email address and invent a password. For the international payment

Re: [time-nuts] OT - Need a German speaker

Addendum to my previous mail: their *Payment Options* http://www.box73.de/shop_content.php?coID=13 (english page): http://www.box73.de/shop_content.php?coID=13 *Shipping Costs* http://www.box73.de/shop_content.php?coID=14: http://www.box73.de/shop_content.php?coID=14 I hope this will help, 73

Re: [time-nuts] 10811 Outer oven controller schematic

Magnus, I am sure he does mean gasoline, petrol, benzine. I apply it quite often when other alcohols dont work e.g. spiritus (ethanol). But beware to apply only the clean issue which is specially sold for this purpose or that one sold in small metal cans for the good old cigarette lighters. It is

Re: [time-nuts] Shera code

Thank you for these additional informations, Bert ! regards Arnold Am 25.05.2013 21:58, schrieb ewkeh...@aol.com: Questions have come up on the recent release of the Shera code. All software commands with the exception of Auto N get lost in case of power failure. Auto N is stored in

Re: [time-nuts] Brooks Shera ASM release

Hi Bert, I do fully support David's opinion, I appreciate very much all the past and future work on this subject like all other developments in the group, so please don't stop, it made me happy when I got the code list in your past mail! Thank you very much, regards, Arnold, DK2WT am

Re: [time-nuts] Brooks Shera ASM release

Gentlemen, this is a very good note, many thanks for this very interesting information and the work behind! I will try to implement the new code and a new processor without mistakes from my side. Regards, Arnold, DK2WT Am 12.04.2013 20:28, schrieb ewkeh...@aol.com: Attached is Brooks

Re: [time-nuts] Brooks Shera

Hello, I am deeply affected by Brookes Shera' s death. Years ago I had only a few mail-contacts with him and he's been very helpful and friendly. I believe that he would have assisted to introduce improvements and further details in his design if he would have been able to. He did provide me

Re: [time-nuts] Time security musing - attacking the clock itself

Hi, I agree, It's high time to come back to the roots! 73 Arnold, DK2WT Am 05.12.2012 00:40, schrieb Bob Camp: Hi It's not really clear that people noticed this ….Give it a bump. Bob On Dec 4, 2012, at 2:33 AM, Tom Van Baak t...@leapsecond.com wrote: Please. May we call this thread

Re: [time-nuts] HP-53132A Faded and flickering display

Am 14.11.2012 06:41, schrieb Tom Knox: Hi Edgardo; I have been looking for a part number and source. There was a part number posted but it was for the 34401A which is slightly different. I will post price and availability if I find them. Best Wishes; Thomas Knox Hi Edgardo, I bought my

Re: [time-nuts] wwvb weak on east coast especially when the pre-amps under wa...

What type of coating do you recommend? What is the downside of coating all electronics? As i wrote before, we usually use Plastik 70 and Urethan 71 for the stuff that does not need high specs. For those that are under water and/or more aggresive stuff (like body fluids) we use parylene.

Re: [time-nuts] wwvb weak on east coast especially when the pre-amps under water.

Am 14.05.2012 21:54, schrieb Hal Murray: mag...@rubidium.dyndns.org said: I had the same problem with a GPS antenna at work. Somebody had put the manufactures label over the porus plug that should have vented out any water... but it didn't so I had too high water-level inside the antenna.

Re: [time-nuts] Neutrinos not so fast? (defectove connector)

Just for completeliness I was pointed to this information: http://www.nature.com/news/flaws-found-in-faster-than-light-neutrino-measurement-1.10099 Arnold Am 23.02.2012 12:21, schrieb Azelio Boriani: I have found the official CERN director's words: (from Marco URLs) Ecco l’annuncio del

Re: [time-nuts] Neutrinos not so fast? (defectove connector)

Thanks Azelio, so let's wait for domani ;-) , Arnold Am 23.02.2012 15:12, schrieb Azelio Boriani: Yes, this doesn't mean the results are necessarily wrong but only questionable. Too bad we have to wait until May to know the damage extension on the observed results. Here in Italy,

Re: [time-nuts] Neutrinos not so fast? (defectove connector)

Am 23.02.2012 15:24, schrieb Alberto di Bene: On 2/23/2012 1:04 AM, Poul-Henning Kamp wrote: I simply don't buy the story that tightening the connector makes a consistent 60 nanoseconds difference on a signal. I spoke with a physicist of Cern, friend of the leader of the team that

Re: [time-nuts] gravity controlled pendulumn clock?

I don't understand at all the arguments against the metric system and the polemic remarks about. I second the statements of Neville and Jim. Without these intelligent french Astronomers like Jean-Baptiste-Joseph Delambre, Pierre-François-André Méchain and J.J. Lalande (more infos: Ken Alder, The

Re: [time-nuts] Those pesky Neutrinos again...

Am 20.11.2011 23:50, schrieb Magnus Danielson: On 11/20/2011 11:10 PM, Justin Pinnix wrote: I'm no physicist, but is it possible that the speed of light is faster than we thought it is? Space isn't a perfect vaccum, and we know neutrinos are less affected by stuff than photons. Maybe

Re: [time-nuts] T-Bolt sig-stringth vs AZ-EL display...?

Hi Mike, try it using key 's' like 'survey', then 'a' for 'antenna' a.s.o. (eg. 'sas' or 'sad'). rgards, Arnold Am 25.10.2011 15:15, schrieb Michael Baker: Hello TimeNutters-- Can someone tell me what the required keystroke entries are to display the LH Signal Strength vs. AZ-EL display?

Re: [time-nuts] Strange temperature peak

I confirm Bob's statement. Such spikes seem to be normal. I am running T-Bolts already since the begin of the time nut action initiated by Tom (TvB) and with a temp resolution of 20m°C. I observed always such spikes up to a few times a day. I do not see a real practical problem. Arnold Am

Re: [time-nuts] Strange temperature peak

Hello In my case I think it's not a rf problem. I am far away from rf or cell phone stations and the shack is well protected against rf from outside and no cell phone nor other transmitters were used in this room at this time. If it would be an emc problem - why is only the temperature output

Re: [time-nuts] Housing LPRO and Thunderbolt together

Bill's comments made me ruminative. Because there seem to be different informations circulating about the possibility to discipline Rubidium Oscillators, their phase stability and lifetime. I would like to have it precised or corrected. Dated 22.04.2011 23:37, WB6BNQ wrote: True, you can treat

[time-nuts] Vectron Oscillator Model 217-5604 Info search

Hi, is there anybody in the group who could give me informations of the Vectron Crystal Oscillator Model 217-5604? I got two of this type with 9.995985 MHz and 9.99597 MHz and I think these would be good for mixing 10 MHz units down to 4 kHz Audio for measurement purpose. Can dim. is 2 x 2 x 3

Re: [time-nuts] SI Unit Problems

I don't understand what is wrong with 'Hz'. As Time in seconds is a SI unit, Frequency is the reciprocal value of time, f=1/T, Frequency is not a SI base unit but a SI coherent derived unit (in the list with special names and symbols as force, pressure, charge, power, resistance etc.). [11th CGPM,

Re: [time-nuts] SRS PRS10 problem

Robert, as well from my side a big THANK YOU! Arnold Am 23.02.2011 16:29, schrieb Robert Watson: OK, Here is the result of my lunch-break scanning session. (...) http://people.bath.ac.uk/eesrjw/prs10/PRS10_revH_BoM_schematics.pdf ___ time-nuts

Re: [time-nuts] Achievable temperature stability for Thunderbolt environment?

Hi Achim, I have very stable thermal conditions in my house. The temperature indicated by the box (internal sensor) does stay stable within 50 mK/d when the sun is not shining with very slow ripple. On sunny days the in-box temperature does climb up by about 350 to 450 mK (less then 100 mK/h) and

Re: [time-nuts] Another GPS .. this is a true boatanchor

Hi Pete, I have that Raytheon QFHA Quadrofiliar Helix-Antenna, bought as used part. This antenna is really good and does an excellent job directly connected to Trimble Thunderbolt (5V alim.)! The cable can be fed Inside via the mounting thread part, enjoy it, Arnold Am 03.12.2010 23:31, schrieb

Re: [time-nuts] Time of death-Again

Fellow time nut(s), isn't this not going too far, going to be disgusting and perhaps wounding feelings? No better things in mind? Could we stop this and come back to the roots,talk and discuss about real physical and technical time concerning points instead? It's not everybody's humor to

Re: [time-nuts] RF Prescaler for 53131A/53132A/53181A counters - update !

Hi Samuel, I was quite a while away from my home, do you have good news? greetings Arnold Am 08.07.2010 18:12, schrieb Samuel DEMEULEMEESTER: Here is some update on my low-cost extension board for the Agilent/HP counters. Finally received all the components and assembled everything some

Re: [time-nuts] Different Survey Results

Peter, My TB is running continuously during months. It draws about 7 W using the black PWR-supply proposed by Tom (TvB). In the room at about 22 °C it does show 32.43 °C, I never passed 37 °C. So I would propose to net go beyond the 40 °C internal temp. reading. I will manufacture a wooden box

Re: [time-nuts] My old new 53132A just arrived

Am 09.08.2010 14:15, schrieb Loïc MOREAU: Hi all, My first goal is to verify the frequency of my different RF sources : 4420B, some DDS, a N2PK VNA and ISOTEMP 134-10, the next step with the help of an Excel spread sheet to have some idea about their respective stability. Equipped with

Re: [time-nuts] What's the latest correct PICTIC II Mouser project?

With the exception of the 74AC175 Farnell does have almost everything on stock. Private clients will not be delivered but they can order all the Farnell parts via www.hbe-shop.de in Berlin/ Germany for the same price. The parts will be shipped directly by Farnell. I got mine within 24 hours! A

Re: [time-nuts] Updated Shera controller

I do, and I am also interested on other improvements! Regards, Arnold Am 29.07.2010 12:49, schrieb ewkeh...@aol.com: Hi I think it would be nice to have a show of hands as to how many are locking a Rb to GPS and what they use. Bert Kehren In a message dated 7/29/2010 4:00:31 A.M.

Re: [time-nuts] Updated Shera controller

Bert, I'm using at the moment a thunderbolt (with spare for testpurposes using ext. other oscillators), a nice PRS10, a FRK-HLN-1A (5MHz with external doubler to 10 MHz) and several HP10811. I would like to build up with this a good and reliable reference (PPS and Frequ.). My dream would be a good

Re: [time-nuts] Updated Shera controller

Bert, I forgot the Shera Board, my first device, which probably could be a bit tuned... Arnold Am 29.07.2010 13:50, schrieb ewkeh...@aol.com: Arnold what do you use? Bert Kehren In a message dated 7/29/2010 7:02:06 A.M. Eastern Daylight Time, arnold.ti...@gmx.de writes: I do,

Re: [time-nuts] Updated Shera controller

No problem for the PRS10 - there is an external pps input. For the FRK-RbO I don't have a practical solution yet, because I don't have a manual with circuit diagram found for this 5 MHz model. This RbO is actually running free, drift controlled by an external resistor set by two 10 turns

Re: [time-nuts] PICTIC II Programmed 16f688 chips

Hello, for interested german users, Wolfgang, DL1GVW informed me offline, that he would program the Pics for them. You may contact him via DL1GVWatGMX.de directly. If needed I can provide his address. Together with EB4APL's offer, the programming of the Pics should not be problematic for european

Re: [time-nuts] PICTIC II PCB order placed

Hello Stanley, I wrote already twice offline, but it looks like it doesn't arrive. So I ask this way, if it is not too late, can I order as well 2 ea.? Who can provide the programmed pics (best in Europe for Germany)? Many thanks, Arnold Am 03.07.2010 18:27, schrieb Stanley Reynolds: No

Re: [time-nuts] PICTIC II PCB order placed

Many thanks, gracias Ignacio, Arnold Am 03.07.2010 20:35, schrieb EB4APL: I already volunteered to program the PICs for Europe. I'll elaborate more as things progress. Regards, Ignacio, EB4APL Arnold Tibus wrote: Hello Stanley, I wrote already twice offline, but it looks like

Re: [time-nuts] [OT] degaussing

The dotpitch of Trinitron and Diamondtron tubes (Mitsubishi) is at 1/100 inch (0.24 mm to 0.27 mm), which defines the distance of these shadow wires. What tube width do you have? ;-) The wires are very sensitive to vibrations which makes the horizontal stabilizing wires necessary (in most

Re: [time-nuts] TBolt: UTC PPS

On Mon, 29 Mar 2010 08:24:00 +0200, Magnus Danielson wrote: Tom Van Baak wrote: It also has an option to sync the PPS with GPS or UTC. I thought they were off by an integral number of seconds so I don't expect any change. Does anybody know what's going on here? The GPS broadcast message

Re: [time-nuts] What time is it anyway?

The answer looks to me a bit difficult reading the USNO definition : INTERNATIONAL TIME SCALES AND THE B.I.P.M. http://tycho.usno.navy.mil/bipm.html citing: ...the U.S. Naval Observatory timescale, UTC(USNO), and its real-time implementation, Master Clock #2 (MC #2), are kept within a close

Re: [time-nuts] FW: Re: Low-Cost 6+ GHz Prescaler board for

Hallo Samuel, after reading all your decription and the answers given I am impressed and interested on your project! In general I am fully in agreement with Bob Camp's and John Miles's comments. Personally I would accept as well a SMA-Type connector, I do use them in most cases. If I

Re: [time-nuts] nubie querie

On Sat, 06 Mar 2010 08:03:01 +1030, Matthew Smith wrote: So, if the mass is closer to the centre of the planet, it weighs more? Never really considered this before, but fascinating nonetheless. No! The gravitational attraction will decrease once penetrating the surface. At the center of gravity

Re: [time-nuts] Low noise voltage regulators

Hi, NS gives some informations about improvements in their AN-173.pdf http://www.national.com/ds.cgi/LM/LM117.pdf Audio freaks are discussing it in http://www.diyaudio.com/forums/solid-state/28978-improving-lm3x7-regulator-circuit.html Is that what you are looking for? 73 Arnold On Thu, 25 Feb

Re: [time-nuts] TBolt OCXO replacement

On Tue, 16 Feb 2010 15:28:11 -0800, Henry Hallam wrote: ... - why does aging matter? Isn't the whole purpose of a GPSDO to completely eliminate long-term drift? Aging? This remembers me on something... .When I get older, losing my hair - ... ...will you still need me, will you still feed me,

Re: [time-nuts] Thunderbolt AMU to dBc conversion

Magnus Mark, for my Thunderbolt system I found a very good correlation between AMU and dBc/ Hz ( observed on my system using the ThunderboltMonitor watching over long time stable satellite signals ) when I use the Formula: C/N0(dBHz) = 20 log(AMU) + 23.5. 73, Arnold On Sat, 13 Feb 2010

Re: [time-nuts] Thunderbolt AMU to dBc conversion

reasonable with the values I reported in a old mail ... Arnold On Sun, 14 Feb 2010 00:50:57 +0100, Magnus Danielson wrote: Arnold, Arnold Tibus wrote: Magnus Mark, for my Thunderbolt system I found a very good correlation between AMU and dBc/ Hz ( observed on my system using

Re: [time-nuts] Thunderbolt AMU to dBc conversion

precise value will be possible - I doupt it. Perhaps the Thunderbolts do have small differences in conversion factors? Can wet expect high precision here as it is not a measurement device for reception levels? Arnold On Sun, 14 Feb 2010 00:50:57 +0100, Magnus Danielson wrote: Arnold, Arnold

Re: [time-nuts] TBolt self survey

Raj, don't trust the height asl from (older) maps. There are so many different local sea level definitions around the world, which are not yet WGS84/ EGM96 conform (WGS 1972 would be good as well)! I had similar problems comparing swiss and and german map values with the Shuttle Radar

Re: [time-nuts] TBolt self survey

Try to find your correct height here: http://sps.unavco.org/geoid/ If you put in your correct coordinates without any input for the elevation, you will get theorthometric height, which is the GPS ellipsoidal height minus geoid height. That is the amount you need to subtract from your

[time-nuts] Lady Heather, heavy load for PC?

I am just realizing that the nice programLady Heather issue 3beta seem to be a heavy Lady ;-) Wondering why the processor temp level on my laptop (Thinkpad T43p, 2.26 GHz, 2GB RAM) went up to 85 °C I decided to look careful after it with a small add on program. The processor temperature of

Re: [time-nuts] AMU vs dBc

Hi Nigel, a bit difficult to find, but here it is: http://www.symmetricom.com/link.cfm?lid=4670 ut this is a Acutime document andt there is not much more in which is of interest concerning the Thunderbolt unit. All well known by you I believe, but I repeat it for other and new ThunderBolt

Re: [time-nuts] AMU vs dBc

Hi everybody, in a document from Trimble (TTM637VME/TTM357VXI GPS Satellite Receiver Addendum, User's Guide) I found: The signal level (Byte 5) is a linear approximation of C/N0 which is stated in antenna amplitude measurement units (AMUs), a Trimble devised unit. An approximate correlation

Re: [time-nuts] Lady Heather wants to know: How big is your tube?

Mark, I am running LH on my Lenovo Laptops with their native resolution 1400 x 1050 color 32 bpp and 1600 x 1200 color 32 bpp On my bigger external 19 Eizo screen: 1280 x 1024 (which does seem to be the most often used resolution but laptops do use often higher resolution having

Re: [time-nuts] unit�s conventions internation a les

On Mon, 12 Oct 2009 20:35:07 -0400, Mike S wrote: At 05:07 PM 10/12/2009, J. Forster wrote... Thankfully, the enlightened use:... mage The enlightened play WoW? I am sure 'mage' should be read as 'mega' ! I guess a mere typing error [or an intelligence test ;-) ?] ! Arnold

Re: [time-nuts] unit�s conventions internationa les

Alain, think magic, c'est magique...! Arnold On Tue, 13 Oct 2009 18:01:08 +0200, AL1 wrote: John, i don't understand mage, my dictionnary no more is it some slangy expression? salut de France! Alain F4GBC - Original Message - From: J. Forster j...@quik.com To: Discussion of precise

Re: [time-nuts] unit�s conventions internationa les

On Mon, 12 Oct 2009 11:25:48 +0200, AL1 wrote: HI all timenuts lovers, i think it is not a question in our hobby : we have to use the international unities system (SI) as result fron the international conventions. I warm recommand to read that:

Re: [time-nuts] unit�s conventions internationa les

Simple? in which sense? The British and the European do use the same Billion... - if I red it correctly - even if the UK does feel sometimes not as Europe (driving still on the wrong side ;-) ) (I still hope that our government did apply the US-Billion when they published the government

Re: [time-nuts] time-nuts Digest, Vol 63, Issue 52

On Sun, 11 Oct 2009 12:10:36 +, Mark Sims wrote: Alas, if there was only an FM to R... there is some useful information in the revision history/comments near the beginning of the file heather.cpp The OSC graph defaults to OFF because it tends to be a very jagged and noisy looking graph

Re: [time-nuts] time-nuts Digest, Vol 63, Issue 52

On Sun, 11 Oct 2009 16:27:32 +0200, Arnold Tibus wrote: On Sun, 11 Oct 2009 12:10:36 +, Mark Sims wrote: Alas, if there was only an FM to R... there is some useful information in the revision history/comments near the beginning of the file heather.cpp The OSC graph defaults to OFF

Re: [time-nuts] VLF time stations in Europe

Thank you Poul-Henning for this interesting document. Just beeing curious, what type of transistors did you implement? Arnold On Wed, 30 Sep 2009 21:31:06 +, Poul-Henning Kamp wrote: In message 00d701ca4212$e2a41890$0900a...@lark, Alan Melia writes: Possibly the local noise is the

Re: [time-nuts] HP 00105-6100 figures

Christopher, even not having the 105A, this sheet may be very useful as well for others wanting to integrate a 10811 in their equipment. Thank you Arnold On Thu, 01 Oct 2009 01:32:32 -0700, Christopher Hoover wrote: Silly me. I remembered that I had a late edition 105A/B manual. It took

Re: [time-nuts] Method for comparing oscillators

On Tue, 4 Aug 2009 20:45:45 -0400, Joseph M Gwinn wrote: I dug this up a year or two ago. It was not easy to find, but the main patent is US Patent 7,227,346 to Solbrig. The patent text may be obtained from www.pat2pdf.org or Google Patents. When you need US Patents as PDF look also to this

Re: [time-nuts] Posting style Was: looking for gooddescription/generalized model for time adjustments

Top Posting, Mid Posting or Bottom Posting, I agree to not discuss it extensively. But why it is necessary to fill up the archive space with twice, triple or even more times of: time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to

Re: [time-nuts] Thunderbolt temperature measuring

Hi Mats, welcome! As you are working already with a wired interface, I think you don't risk anything when trying it - you can not really lose anything, I think you may have a problem to see a difference because the missing reference.measurements. I do not expect a EMC problem, but it's as

Re: [time-nuts] A couple of Tbolt questions

On Fri, 24 Jul 2009 12:18:21 -0700, Tom Van Baak wrote: Unfortunately I can't help with the phase noise measurements either right now but it does seem like an area worthy of further investigation. regards Nigel GM8PZR Since I have fancy phase noise systems and references here I ran

Re: [time-nuts] A couple of Tbolt questions

I opened the mute Tbolt up to check the solder connections on the DB9 and I see it has version 2.2 firmware. How big a deal is it that it doesn't have 3.0? Also, it has the Trimble 37265 OCXO. I understand that there were good and not so good OCXOs used in these. Is this one of the good ones?

Re: [time-nuts] A couple of Tbolt questions

That's what I've been assuming all along, but the idea that some of them were hand-selected for PN is new to me. I suppose the potentially worrying thing about a cryptic label that just says phase noise is that it could be as appropriate to indicate the presence of noise

Re: [time-nuts] A couple of Tbolt questions

Hi Nigel, May be, but does not sound to be very logic to select OCXOs for low noise and then stick the 'low noise' label to the bad parts... Hi Arnold Many thanks for the photos, which confirmed what I understood from your previous comments, that the label doesn't say low

Re: [time-nuts] Trimble Thunderbolt setup optimizationand addinga10811 OCXO

John, I put in as K0 what I measured several times with the 10811 as 'gain' with -0.74 Hz/V. Is that not the right way? Yes, that's fine. Because the varactor is nonlinear and a small part of the overall tank circuit C, the tuning gain depends on the adjustment-screw setting to some extent.

Re: [time-nuts] Trimble Thunderbolt setup optimization and adding a10811 OCXO

to disable that I have found) when I need to do a Tau 0.1-10 sec. low jitter measurement. Regards... Don From: Arnold Tibus arnold.ti...@gmx.de To: Discussion of precise time and frequency measurement time-nuts@febo.com; Tom Van Baak t...@leapsecond.com Sent

Re: [time-nuts] Trimble Thunderbolt setup optimization and addinga10811 OCXO

On Mon, 13 Jul 2009 13:32:37 -0700, John Miles wrote: What are you using for the Kvco constant with your 10811-based Thunderbolt? If you don't back it down to -0.2 V/Hz, the loop's damping factor will be very wrong, which might confuse the firmware. Check the Kvco, and also do a factory reset

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