Re: [time-nuts] EFC tracking

, but the new kit is even cheaper. Didier > -Original Message- > From: time-nuts-boun...@febo.com > [mailto:time-nuts-boun...@febo.com] On Behalf Of Didier Juges > Sent: Saturday, June 26, 2010 10:20 AM > To: 'Discussion of precise time and frequency measurement&#

Re: [time-nuts] EFC tracking

Steve, You may want to check the "Analog Devices MiniKit for ADuC702x-series". http://www.google.com/search?q=Analog+Devices+MiniKit+for+ADuC702x-series This kit includes a 24 bit ADC and integrated ARM processor in a small PWB with all the tools and sample code to do what you want with very li

Re: [time-nuts] FRS-C TTL / sine outboard filter question

: Didier Juges via Cox Subject: RE: [time-nuts] FRS-C TTL / sine outboard filter question Sent: Jun 23, 2010 8:41 PM I do not understand why the passband ripple would be of any consequence in the big (or small as we typically talk about) picture. During any measurement interval, it will be a

Re: [time-nuts] FRS-C TTL / sine outboard filter question

Leigh, A narrow filter around 10MHz is likely to show phase ripple in its passband, and that will most certainly vary over temperature, not a good thing for ADEV, that's why a LPF is preferred. Also, most crystal filters may not be happy with the output level of a typical OCXO, so you would ha

Re: [time-nuts] FRS-C TTL / sine outboard filter question

If your concern is to clean up the harmonics, a crystal ladder filter is probably not the best choice, a low pass filter would be easier to design, would probably require no adjustment and be cheaper in parts with less effect on the fundamental signal you are interested in. If your concern is c

Re: [time-nuts] crystal oscillators

I have version 8.5.3.6 (January 2007) on my web site (manual pages) that John Vig sent me some time ago, not sure if there is a more recent one... Didier www.ko4bb.com Sent from my BlackBerry Wireless thingy while I do other things... -Original Message- From:

Re: [time-nuts] Galvanic decoupling of GPS antenna

Yuri, It is not clear to me why the antenna should be isolated from the receiver, I would prefer to keep the antenna and receiver on the same return, and isolate that assembly from the rest of the world. It is much easier to provide isolation on the supply, RS-232 and 10MHz (if you use it) tha

Re: [time-nuts] 5061A Problem Child

Joe, You probably already have a phase detector capable of receiving your 90 MHz signal: a good old broadcast FM receiver. Send the audio to the scope or spectrum analyzer and you should see your 137Hz signal. Didier Sent from my BlackBerry Wireless thingy while I do

Re: [time-nuts] Advantages & Disadvantages of the TPLL Method

Magnus, The PLL gain cannot reduce the effect of injection locking. The injection lock affects the oscillator directly (in series with the PLL in a sense, rather than in parallel), so the PLL cannot compensate (or desensitize) the effect of injection locking because it operates after the fact.

Re: [time-nuts] Advantages & Disadvantages of the TPLL Method

I promised myself I would not get into this any more, but here we go again... WarrenS wrote: > > Charles posted: > but the locked frequency will be different from both oscillators' > free-running frequency and > the EFC will not correctly indicate the test oscillator deviation > because i

Re: [time-nuts] Advantages & Disadvantages of the TPLLMethod

I was using Thunderbird for a while, and the main advantages, from a practical standpoint, were the full access to the message headers, better control on formatting and better spam filtering, but since I have been using a Blackberry, I have appreciated the excellent integration of Outlook and t

[time-nuts] FW: FW: Advantages & Disadvantages of the TPLL Method

That now works here. For those using Outlook, here is the fix: http://support.microsoft.com/default.aspx?scid=kb;en-us;823921&Product=out2003 Didier -Original Message- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of Didier Juges Sent: Sunday, Jun

[time-nuts] FW: Advantages & Disadvantages of the TPLL Method

Testing, testing, testing... I made a registry change which should prevent Outlook from breaking the line on transmit... Didier -Original Message- From: Didier Juges [mailto:did...@cox.net] Sent: Sunday, June 13, 2010 10:08 AM To: 'Discussion of precise time and frequency measur

Re: [time-nuts] Advantages & Disadvantages of the TPLL Method

ncy measurement > Subject: Re: [time-nuts] Advantages & Disadvantages of the TPLL Method > > On 13/06/2010, Didier Juges wrote: > > I saw that. There is nothing I can do about it other than > by using a > > url shortener > > You can hint to most email clients t

[time-nuts] FW: Advantages & Disadvantages of the TPLL Method

This is a test... < http://www.ko4bb.com/dokuwiki/doku.php?id=precision_timing:phase_frequency_m easurement_methods > Didier ___ time-nuts mailing list

Re: [time-nuts] Advantages & Disadvantages of the TPLL Method

ges of the TPLL Method > > Didier > > On 13 June 2010 21:51, Didier Juges wrote: > > Tom, > > > > I took the liberty of converting your post into an entry in my > > Time-Nuts > > Wiki: > > > http://www.ko4bb.com/dokuwiki/doku.php?id=precision_

Re: [time-nuts] Advantages & Disadvantages of the TPLL Method

Tom, I took the liberty of converting your post into an entry in my Time-Nuts Wiki: http://www.ko4bb.com/dokuwiki/doku.php?id=precision_timing:phase_frequency_m easurement_methods Please note anyone can edit this Wiki or create new pages. Didier > -Original Message- > From: time-nuts-b

Re: [time-nuts] Thunderbolt not seeing satellites

The TB has an error flag if there is no antenna connected (open) or if it is shorted. The tboltmon PC software reports these flags, and so does my GPSMon firmware in the fluke.l monitor. It is possible but unlikely that there would be something wrong with the bias circuit that would not be repo

Re: [time-nuts] Thunderbolt not seeing satellites

My understanding is that you have the older red box. Manual for the red box is there: http://www.ko4bb.com/Manuals/05%29_GPS_Timing/Trimble/Trimble_-_Thunderbolt/ ThunderBolt_Datasheet_%28red_box%29.pdf The power spec is 24V nominal, 18V min to 36V max Mine has been running off a small open fram

Re: [time-nuts] A philosophy of science view on the tight pll discussion

WarrenS wrote: > Ulrich posted a bunch of logic stuff, some of which I did not understand. > > but I do think he missed the main point > I personally think Warren missed the point entirely, but it's just my opinion. This statement is a good summary of what has been going on. You cannot

Re: [time-nuts] Notes on tight-PLL performance versus TSC 5120A

Steve Rooke wrote: > ... > Lets explore frequency measurement in a way that we all can > understand. No oscillator can be measured in isolation, it has to be > measured against another standard oscillator. The last part of your statement is not true. An oscillator's period can be compared

Re: [time-nuts] hp 5087a manual

I found it, it was uploaded as 5078 and I blissfully saved it under that name, I am fixing it :) Didier KO4BB > -Original Message- > From: time-nuts-boun...@febo.com > [mailto:time-nuts-boun...@febo.com] On Behalf Of paul swed > Sent: Saturday, May 22, 2010 9:15 PM > To: Discussion of p

Re: [time-nuts] Z3805 utility, Was: AW: (no subject)

measurement Subject: Re: [time-nuts] Z3805 utility, Was: AW: (no subject) Didier Juges wrote: > Bill, I think you got it backwards. +/- 12V is typical for RS-232, 0/+5V is > for RS-422 and RS-485. > > No RS-232 receiver should be damaged with +/- 12V or even +/- 15V because > that

Re: [time-nuts] Z3805 utility, Was: AW: (no subject)

Bill, I think you got it backwards. +/- 12V is typical for RS-232, 0/+5V is for RS-422 and RS-485. No RS-232 receiver should be damaged with +/- 12V or even +/- 15V because that is their normal operating voltage. Also, RS-422 and RS-485 have something like 25V common mode tolerance (not sure what

Re: [time-nuts] Fluke monitor

Must be the Y2.01K bug... Sorry about the problems being reported recently. While I have no association with Bob of Fluke.l, he is using my design and he was kind enough to send me one demo model, which I have yet to turn on. In general, if the processor is not fried, there is very little that c

Re: [time-nuts] Fluke monitor

Considering that there are two main components in the display, it could be either the microcontroller, the LCD display, or the cabling between the two. I am not sure what you mean by swishing, but if shaking it fixes the problem, even momentarily, it may be as simple as a cold solder joint. It

Re: [time-nuts] lunatic fringe time standards

flip-flop and the 714 two input gate. The beauty of the Johnson counter is that you can decode it's state with ten each two input gates. http://www.prc68.com/I/comp.shtml#Nixie Have Fun, Brooke Clarke http://www.PRC68.com Didier Juges wrote: > I believe Gray code was invented to

Re: [time-nuts] lunatic fringe time standards

I believe Gray code was invented to support absolute mechanical position encoders, where the speed of the electronics is high compared to the speed of the hardware being monitored. It eliminates the potentially large error between two positions since only one bit changes at a time. This is done

Re: [time-nuts] lunatic fringe time standards

Eugen, My understanding is that in Germany, a suitable alternative to the Trimble Thunderbolt is as follows: http://www.ko4bb.com/Trimble_Thundebolt.png :) Didier KO4BB (sorry, I could not resist...) Eugen Leitl wrote: > > Hi -- a couple somewhat lunatic questions. Figured this

Re: [time-nuts] Low noise voltage regulators

The original 723 (I remember the uA723 made by Fairchild, I still have a couple of 30 year old parts here) had a buried Zener and was considered pretty quiet at the time. I am not sure how it would compare with today's low noise references, but the last time I checked, it was pretty good, even

Re: [time-nuts] Fw: Re: Fluke1 Monitor

It was the Chinese new year. China closes for about 2 weeks and nothing gets done. Didier Sent from my BlackBerry Wireless thingy while I do other things... -Original Message- From: Brooke Clarke Date: Wed, 17 Feb 2010 11:33:36 To: Discussion of precise time

Re: [time-nuts] iPhone app

My Blackberry gives me several options for time, including the option to sync from the network on cue, but it will only display the current time with a resolution of 1 minute. There may be 3rd party apps that do better, I have not looked, but I am a little miffed that the phone does not have a s

Re: [time-nuts] Injection locking

This link will show you the effect of duty cycle on harmonic content: http://www.ko4bb.com/Test_Equipment/Pulse_Modulation/ Didier KO4BB Sent from my BlackBerry Wireless thingy while I do other things... -Original Message- From: Rex Date: Thu, 11 Feb 2010 02:

Re: [time-nuts] No 1 PPS output on a Tbolt

The pulse is narrow, but it should be a full 5V amplitude. The driver is pretty beefy, the amplitude does dot drop appreciably when loaded with 50 ohms on mine. Didier KO4BB Sent from my BlackBerry Wireless thingy while I do other things... -Original Message-

Re: [time-nuts] Small CPLD/FPGA for microcontroller replacement

easurement Subject: Re: [time-nuts] Small CPLD/FPGA for microcontroller replacement On 2/5/10 6:14 AM, "paul swed" wrote: On Fri, Feb 5, 2010 at 9:04 AM, Didier Juges wrote: > > Part of the requirement is that the devices be immune (as much as > practical) > from SEU m

Re: [time-nuts] Small CPLD/FPGA for microcontroller replacement

rapidly goes offline to respect others. On Fri, Feb 5, 2010 at 9:04 AM, Didier Juges wrote: > It looks like I will have to get educated on CPLD/FPGAs on short notice. > > My application at the moment will be the replacement of small > microcontrollers for military and commercial aviat

Re: [time-nuts] HP5370b when the eproms go

I have two 5370As that had the bad socket syndrome. In my case, the entire instrument was erratic, not just the display, but if you unit(s) is using the same kind of cheap sockets as those in the 5370A, it is a possibility. Didier KO4BB Sent from my BlackBerry Wireless

[time-nuts] Small CPLD/FPGA for microcontroller replacement

It looks like I will have to get educated on CPLD/FPGAs on short notice. My application at the moment will be the replacement of small microcontrollers for military and commercial aviation projects that do not want/tolerate software/firmware (some customers and government regulations do not consid

Re: [time-nuts] Conducting Bench Top Material

In France, it is known as "fleur de souffre", which translates litterally to "flower of sulphur". In French, there is no confusion possible between the terms flower (fleur) and flour (farine). Didier > -Original Message- > From: time-nuts-boun...@febo.com > [mailto:time-nuts-boun...@feb

Re: [time-nuts] Conducting Bench Top Material

According to the paper that was linked earlier, there are 3 types of fluorescent bulbs, some have no heater at all and are started with a high voltage pulse that causes accelerated damage. Those suffer from the most life reduction when cycled. Those with the always on heater suffer the least, but

Re: [time-nuts] Conducting Bench Top Material

Also they are very sensitive to heat, so do not use them in an enclosed fixture. I have been burned (figuratively) with these two gotchas, there may be more. The one that lasts the longest in my house is the outside light at my back door. It is turned on once a day around 6-7 PM and off in the mo

Re: [time-nuts] [OT] Ikea Lamp

Yes, it is frustrating, they have to be the last dinosaurs of consumer distribution. For me, the nearest store is 6 hours away, if I don't get stopped for a speeding ticket on the way... So I can't afford to be interested in what they may have for sale. Didier > -Original Message- > Fro

Re: [time-nuts] ko4bb monitor

If you go back to the page where I describe the GPS Monitor http://www.ko4bb.com/Timing/GPSMonitor/, you will see that the current chip is a 20 pin 8051 from Silabs, an C8051F330D or GP. Bob simply bought the chip I was using so that he could use my software. He changed the boot prompt and that's i

Re: [time-nuts] ko4bb monitor

Bob Mokia of fluke.l told me he used my code, which was pretty obvious from the messages and the alternate display sequence that you mention. He wants me to customize it for him. I told him I was open to it. The existing code is released under the GPL, so I was not expecting to be paid for it. How

[time-nuts] Fw: ko4bb monitor

Sent from my BlackBerry Wireless thingy while I do other things... -Original Message- From: "Didier Juges" Date: Fri, 22 Jan 2010 19:35:10 To: ; Time-Nuts Subject: Re: [time-nuts] ko4bb monitor I am waiting for my free sample, it was supposed to

Re: [time-nuts] ko4bb monitor

I am waiting for my free sample, it was supposed to ship a few days ago :) No kidding, I will report when I get it. Didier KO4BB --Original Message-- From: Dan Rae Sender: time-nuts-boun...@febo.com To: Time-Nuts ReplyTo: dan...@verizon.net ReplyTo: Time-Nuts Subject: [time-nuts] ko4bb mo

Re: [time-nuts] Test Equipment

I agree, the TM-500 series has a lot of good plug-ins like DMMs, power supplies, function generators, pulse generators and frequency counters, that are quite useful and as good as economy stand-alone equipment, often for much less. One relatively deceptive instrument in the TM-500 series is the SG

Re: [time-nuts] Test Equipment

Another advantage, they don't take 6 feet of bench space and weight 600# Didier Sent from my BlackBerry Wireless thingy while I do other things... -Original Message- From: John Ackermann N8UR Date: Thu, 21 Jan 2010 16:13:46 To: ; Discussion of precise time an

Re: [time-nuts] Test Equipment

John, That sounds like asking what is the best vehicle for you to buy. If you do not know what you want to do with it, I am not sure we can help you all that much. However, if you have a specific objective, I am sure you will get a lot of valuable information here. You have a (good) analog sco

[time-nuts] Microwave oven experiments

I ran the oven for 2 minutes while heating up a cup of water (normally just fine for a large cup of tea :). The spectrum analyzer was on max-hold mode at the maximum RBW (1MHz) so that was a lot of sweeps, but the display was pretty much stable after about 30 seconds, after that, it just filled

Re: [time-nuts] Modified Total Deviation calculation

Perl is well supported under Windows and all flavors of *nix. That would be a good choice in my opinion. You can write Perl code that looks an awful lot like C, or you can make it extremely cryptic and obfuscated for a C programmer. One thing I love in Perl is regex. Not much equivalent under a

Re: [time-nuts] 4 KV Power Supply Recommendations

Looking at the detector output, it seems the 1W is a very narrow peak, probably when the magnetron starts oscillating at the beginning of each pulse. The average signal from the detector is much lower, probably by 20dB or more, so from a heating standpoint, there is not much leakage. The analyzer b

Re: [time-nuts] 4 KV Power Supply Recommendations

I could not resist, so I checked my relatively expensive Sears/Kenmore microwave oven. The results are there: http://www.ko4bb.com/Test_Equipment/Microwave_oven_leakage/ In one word, dismal. Almost 1W peak power leakage at 1 foot, and almost 100MHz occupied bandwidth. I looked with a crystal dete

Re: [time-nuts] 4 KV Power Supply Recommendations

I specifically tested for that at the time (even though I did not pull the spectrum analyzer to verify) and I was able to run the laptop (a Dell D400 running in B/G mode) about 3 feet right in front of the oven without obvious network access problem. The router was in the next floor up, but pretty

Re: [time-nuts] 4 KV Power Supply Recommendations

No simulation tool will ever alleviate the need to know what the heck you are doing. It is great fun to observe those who ignore that simple rule :) Didier Sent from my BlackBerry Wireless thingy while I do other things... -Original Message- From: Magnus Dani

Re: [time-nuts] 4 KV Power Supply Recommendations

Joe, Use Linear Technology's SwitcherCAD to simulate the operation of the multiplier. It is a great tool, and it is free, and you will learn a valuable skill. And it is a lot safer than breadboarding a 4kV supply. Didier KO4BB Sent from my BlackBerry Wireless thingy

Re: [time-nuts] 4 KV Power Supply Recommendations

Keep in mind that the typical microwave oven power supply will be able to deliver about 100 times more power than sufficient to blow the ion pump to bits, in addition to the operator if he is not careful. I would advise against even trying, even though operating the transformer with a 40W incandes

Re: [time-nuts] 4 KV Power Supply Recommendations

For all the ion pumps I am familiar with (particularly one I built for an airborne radar), the power supply regulation is intentionally very poor, i.e. at the max specified current, the voltage should be down to something like 500V or even less, otherwise the pump will overheat. The best curve is n

Re: [time-nuts] Weird T-Bolt elevation readings...

To tell you how far above ground you are, the GPS has to know where the ground is. For that, it is using a model that is not perfect. That is why John Miles' GPS tells him he should get his scuba gear immediately... If you google "geoid" you will find more than you wanted to know about it. Didi

Re: [time-nuts] GPSDO Design

> -Original Message- > From: time-nuts-boun...@febo.com > [mailto:time-nuts-boun...@febo.com] On Behalf Of John Foege > Sent: Thursday, January 14, 2010 5:58 AM > To: time-nuts@febo.com > Subject: [time-nuts] GPSDO Design > > Hi All, > > Quick question for the more experienced members

Re: [time-nuts] Sparkfun

Same thing here. It sounded as if from their message they were going to test a new server configuration today. Maybe they should have at least attempted to decouple the two... It is disappointing, I would have preferred to see a page saying they exceeded their $100,000 in the first ten minutes, an

Re: [time-nuts] are any time-nuts also random-nuts?

That's because the actual cash value of the $60 million jackpot is probably less than $18 millions... Didier > -Original Message- > From: time-nuts-boun...@febo.com > [mailto:time-nuts-boun...@febo.com] On Behalf Of saidj...@aol.com > Sent: Thursday, December 24, 2009 1:57 PM > To: time

Re: [time-nuts] Source for Trimble Bullet GPS antennas?

My Trimble Bullet antenna seems less sensitive than any other GPS antenna I have (a Symmetricom, a good-looking Trimble mag-mount and several cheap active antennas). I receive fewer sats with the Bullet, at any time that I have tried. Maybe it is defective, or maybe that's the way it is. I bo

Re: [time-nuts] Beginner's time reference

There is at least one thing that you cannot do with time, which you can do with pretty much everything else: you cannot go back and recheck your measurement. ... I'll let the thinkers think about that one, while I will have another scoop of ice-cream before it melts (time, time) Didier -

Re: [time-nuts] Beginner's time reference

Then if you *really* want to complicate the issue, ask a woman about it... Time, as it applies to women, is infinitely malleable, yet it is extremely rigid when it applies to men. Go figure... Didier > -Original Message- > From: time-nuts-boun...@febo.com > [mailto:time-nuts-boun...@febo

Re: [time-nuts] OT: From data to equations

Automated curve fitting, neat :) Thanks for the link Didier > -Original Message- > From: time-nuts-boun...@febo.com > [mailto:time-nuts-boun...@febo.com] On Behalf Of Roberto Barrios > Sent: Saturday, December 05, 2009 2:53 AM > To: time-nuts@febo.com > Subject: [time-nuts] OT: From da

Re: [time-nuts] hp Application notes, 225 and 225-1

Thank you for the contributions. The app notes have been moved. Didier KO4BB -Original Message- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of Joe Geller Sent: Friday, December 04, 2009 11:24 AM To: time-nuts@febo.com Subject: [time-nuts] hp Application

Re: [time-nuts] hp Application notes, 225 and 225-1

With any luck, everything that has been uploaded in the last couple of days will be moved tonight. I have been busy with other stuff... Thank you for your patience, Didier KO4BB Sent from my BlackBerry Wireless thingy while I do other things... -Original Message-

Re: [time-nuts] Spread Spectrum Spam!

The MIL-STD-461 EMI specs have a different mask for broadband sources than for narrow band sources. The spread spectrum clocks merely take advantage of that. I am not familiar with the FCC spec, but I suppose they probably have a similar handling of narrow band versus broad band emissions. If you

Re: [time-nuts] AMU vs dBc

How about Arithmetically Meaningless Units? Didier --Original Message-- From: Tom Van Baak Sender: time-nuts-boun...@febo.com To: Time-Nuts ReplyTo: Tom Van Baak ReplyTo: Time-Nuts Subject: Re: [time-nuts] AMU vs dBc Sent: Nov 23, 2009 4:05 PM > A quick play with Gnumerics gave me the fo

Re: [time-nuts] [OT] North

Dave, That may be why there are not so many Cub Scouts any more... They got lost on the way home. Didier > -Original Message- > From: time-nuts-boun...@febo.com > [mailto:time-nuts-boun...@febo.com] On Behalf Of Dave Baxter > Sent: Monday, November 23, 2009 6:41 AM > To: time-nuts@febo

Re: [time-nuts] The Demise of LORAN (was Re: Reference oscillator accuracy)

; A commercial GPS receiver may require a signal as small as > 60dB (depends on the operating mode, and receiver design) > above the GPS signal at the receiver input. > An ERP of a few microwatts should suffice to achieve the > claimed range. > > Bruce > > Didier Juges wro

Re: [time-nuts] The Demise of LORAN (was Re: Reference oscillatoraccuracy)

I was shooting from the hip, I thought the DGPS signals were sent at UHF, but maybe not, but that's not the point. The point is that you can significantly affect DGPS operation without having to jam the GPS signal itself. I found a reference saying the Monterey Bay jammer was jamming the DGPS sta

Re: [time-nuts] The Demise of LORAN (was Re: Reference oscillator accuracy)

I think the problem with the Monterey Bay jammer was that he was jamming the DGPS correction signal, not the GPS signal itself. The DGPS correction signal is sent over the UHF band. Most marine GPS are DGPS because they need the better resolution it provides, particularly to find buoys and channel

Re: [time-nuts] The Demise of LORAN (was Re: Reference oscillator accuracy)

The commercial jammers referred to in an earlier post advertise 10 to 45m or so range, with significant power levels and battery life measured in a few hours. Considering that these devices are illegal to begin with, I have to assume that these figures are probably optimistic (optimistic advertisem

Re: [time-nuts] The Demise of LORAN (was Re: Reference oscillator accuracy)

Not all GPSs are on airplanes, but those I am really worried about are. I don't care if the GPS receiver in my cell phone stops working in some locations, it does not work everywhere to begin with (like in the house, I can't use it to find the bathroom in the dark...), but I worry that the one gui

Re: [time-nuts] The Demise of LORAN (was Re: Reference oscillator accuracy)

GPS receivers have considerable coding gain, which makes it possible for them to detect such low signals in the first place. The jamming signal will not benefit from the coding gain because it does not have the right coding and will be uncorrelated to the actual spread-spectrum signals the receiver

Re: [time-nuts] The Demise of LORAN (was Re: Reference oscillatoraccuracy)

That would be extremely effective, and over a broad area, but then they will probably not run for weeks. Didier Sent from my BlackBerry Wireless thingy while I do other things... -Original Message- From: "Majdi S. Abbas" Date: Sun, 15 Nov 2009 12:31:26 To: D

Re: [time-nuts] The Demise of LORAN (was Re: Reference oscillatoraccuracy)

Enough for what? To bug the heck out of a citizen suddenly unable to find his way to the movie theater? Weapon systems and aircraft navigation are unlikely to be affected by such a simple device on the ground, even if deployed in large quantity. Most of the stuff that really needs GPS has dece

Re: [time-nuts] Didier Juges

ncy measurement > Subject: Re: [time-nuts] Didier Juges > > Joe boy do I agree with your comments on Didiers site. > Been very very helpful. > Thank you Didier and everyone who has contributed. > > On Fri, Nov 13, 2009 at 3:00 AM, Joseph Gray wrote: > > > I just wanted to pu

Re: [time-nuts] Reference oscillator accuracy

Don, you are welcome to upload your pictures (and paper) to my web site, where people normally upload manuals. Didier KO4BB http://www.ko4bb.com/cgi-bin/manuals.pl Sent from my BlackBerry Wireless thingy while I do other things... -Original Message- From: "

Re: [time-nuts] Didier Juges

> To: 'Discussion of precise time and frequency measurement' > Subject: Re: [time-nuts] Didier Juges > > An amazing resource > > Joe > > -Original Message- > From: time-nuts-boun...@febo.com > [mailto:time-nuts-boun...@febo.com] On Behalf

Re: [time-nuts] OT - Tek 7L18 ROM

My 7L18 only works in my 7704, and not in any of the two 3 slots mainframes 7603 I had at one time... Maybe the 7603 were defective (they worked with regular plugins at the time, but both developed ps problems soon thereafter), but the 7L18 works fine in the 7704, even with another vertical ampl

Re: [time-nuts] Trimble GPS lock light

lock" indicator that I incorporated into the N1JEZ > GPSDO I built. Not sure if it can be used on the T-Bolt or not. > Don't see why it cannot be used. > > 73, Dick, W1KSZ > > http://www.ham-radio.com/wa6vhs/GPS/3DFix%20LED%20only%20with% > 20pics%20_4_.pdf > &g

Re: [time-nuts] Trimble GPS lock light

Regarding the GPS Monitor, I have received a couple of requests for an LED indicating lock. That is easy to do, but I am fairly busy at the moment (a deadline by Thanksgiving, if I am done by then...) So if you want me to do it, it will probably be around Christmas before I have much time at all.

Re: [time-nuts] Trimble GPS lock light

> -Original Message- > From: time-nuts-boun...@febo.com > [mailto:time-nuts-boun...@febo.com] On Behalf Of Stanley Reynolds > Sent: Sunday, November 08, 2009 1:14 PM > To: Discussion of precise time and frequency measurement > Subject: Re: [time-nuts] Trimble GPS lock light > > Take a

Re: [time-nuts] WWV Clock

For the first time in a while, both my WWV clocks updated right on time this year!!! I am in North-West Florida, where WWV signals are not overpowering. Didier KO4BB > -Original Message- > From: time-nuts-boun...@febo.com > [mailto:time-nuts-boun...@febo.com] On Behalf Of Glenn Little

Re: [time-nuts] OT: Spectrum Analyzer

Another major difference between the older (sweeping) analyzers and the more modern ones (FFT) is that the sweep type analyzers only look at one particular frequency once per sweep, and for a short time, while the fft types pretty much look at the entire span continuously. That makes the fft typ

Re: [time-nuts] HP 5359A Manual Needed

> -Original Message- > From: time-nuts-boun...@febo.com > [mailto:time-nuts-boun...@febo.com] On Behalf Of John Allen > Sent: Friday, October 30, 2009 11:59 PM > To: 'Discussion of precise time and frequency measurement' > Subject: Re: [time-nuts] HP 5359A Manual Needed > > Thanks to a

Re: [time-nuts] Oscillator comparison

This is the way my EIP counter is configured. There is a multiturn pot accessible on the rear panel (no need to open the cover and disturb the temperature distribution inside the unit.) A much better way than any mechanical adjustment. Didier KO4BB > -Original Message- > From: time-nuts

Re: [time-nuts] HP 5370B ROM images

I only have two 5370As, but I have a programmer old enough that it might support your older PROMs. If you have a problem burning them, let me know and I'll look closer. Didier KO4BB > -Original Message- > From: time-nuts-boun...@febo.com > [mailto:time-nuts-boun...@febo.com] On Behalf O

Re: [time-nuts] Trimble T-Bolt Software

Speaking of which (and I am in total agreement with the previous statement), is there a way to deselect full screen mode from the keyboard without stopping the program? There probably is a Windows shortcut to do that, but me and windoze... Thanks in advance, Didier > -Original Message-

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

One more reason: Most web-based forums are a pain on smart phones, compared to email, unless they have smart-phone specific interface. Very few of the free stuff does. Heck, even this 1024x768 laptop can hardly deal with the amount of screen space used for advertisements on most web sites nowaday

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

nal Message- > From: time-nuts-boun...@febo.com > [mailto:time-nuts-boun...@febo.com] On Behalf Of Didier Juges > Sent: Wednesday, July 29, 2009 10:08 PM > To: 'Discussion of precise time and frequency measurement' > Subject: Re: [time-nuts] Posting style Was: looking >

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

That would be incorrect. To use your analogy, bottom posting is like restarting a book at the beginning each time you put it aside to do something else and close it. Another reason for top posting, which is much more recent though: on the Blackberry, long messages are truncated and you have to

Re: [time-nuts] Thunderbolt temperature measuring

The SMT package was soldered directly to the PWB while I understand the DIP package is up in the air, that will affect the thermal time constant between the PWB and the chip quite a bit. I think I would glue the DIP on the PWB dead-bug style myself. That would get you close to the original configur

Re: [time-nuts] adjustable gain/offset amplifiers

I have been considering making a tray for one or two 7A13 Differential Amplifier plug-ins from the Tek 7k series. The 7A13 has differential output, so aside from a few supply voltages, I need a wideband diff amp and voila. This could drive a conventional (read: limited dynamic range) DSO or anythin

Re: [time-nuts] Fixing an HP 5370A with a missing ROM board

One of my 5370A's does not have the reference oscillator. However, since I use it with an external reference, it has not been a problem. I understand that for some measurements (particularly if those measurements involve that same external reference in some way), it would be better to use an async

Re: [time-nuts] OT - Feynman lecture series on Physics hosted byMicrosoft

What is the password for the video file? Or is there another place to download them from that does not require a password? Thanks Didier KO4BB > -Original Message- > From: time-nuts-boun...@febo.com > [mailto:time-nuts-boun...@febo.com] On Behalf Of Mike Monett > Sent: Wednesday, July

Re: [time-nuts] 1" 14 tpi UNS die

Chuck, In France, Gas Pipe threads are tappered. However, I do not remember if they follow the Metric or British standard for size... Didier > -Original Message- > From: time-nuts-boun...@febo.com > [mailto:time-nuts-boun...@febo.com] On Behalf Of Chuck Harris > Sent: Tuesday, July 07,

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