[time-nuts] Why would I want a rubidium

Sorry for the newbie question, but with two Z3801A's, what use would I find for a rubidium unit? I see lots of them on ebay from the Chinese sellers. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mail

[time-nuts] Vigo TICs

Does anyone know anything about these? The USB units look interesting. I'm almost afraid to find out what one costs, though. http://vigo.com.pl/index.php/en/english_menu/products/measurement_instruments/time_frequency_counters ___ time-nuts mailing list

Re: [time-nuts] GPS antenna and lightning

After doing some online research myself into this topic recently, I am in the process of providing some protection for my Amateur Radio station. I don't have the proper tools at home, so I am having a stainless steel panel made that will attach to a steel window frame, replacing the bottom glass p

Re: [time-nuts] FreeBSD version

> I would go with freebsd 7 at this point. > > -- > Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20 Thanks. Advice from the expert. I can't ask for better than that :-) Joe Gray KA5ZEC ___ time-nuts mailing list -- time-nuts@febo.com To unsubscrib

[time-nuts] FreeBSD version

I know this has been asked in the past, but things change and new versions come out. So, what is the currently recommended version of FreeBSD to use for an NTP server? Is the same version recommended for a NanoBSD build? I'm probably going to build a server from a Net4501 and another from an old "i

Re: [time-nuts] GPS with PPS

Magnus, Thanks for the explaination. I forgot about ionispheric latency effects. I'll look for the book you mentioned. Joe KA5ZEC On Wed, Sep 30, 2009 at 4:11 AM, Magnus Danielson wrote: > Dear Joe, > > Joseph Gray wrote: >> >> Does anyone know if any of those

Re: [time-nuts] GPS with PPS

Well, fluke currently only has the GPS16 HVS. The least expensive GPS18x LVC I've found so far (on or off ebay) is here: http://cgi.ebay.com/NEW-Garmin-GPS-18x-LVC-Receiver-010-00321-36_W0QQitemZ400075170888QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item5d2656a448&_trksid=p3286.c0.m14 Thanks to al

[time-nuts] GPS with PPS

Does anyone know if any of those all-in-one hockey puck GPS receivers put out PPS on the serial cable? The type that has the antenna and GPS together, with a serial cable hanging off of it. I'm thinking about using one for a timing project. The more sensitive, the better, as it will be used indoors

[time-nuts] GPSDO PU question

Yesterday, the PU on my Z3801A suddenly jumped from 2.9uS (where it had stabilized) up to 4.2uS. This was an instantaneous jump. the PU stayed there for a few hours and then started gradually decreasing again. about 20 hours after the jump, the PU is only down to 3.9uS. This Z3801A was powered up f

[time-nuts] Z3801A DC-DC board

Does anyone know where I might get the 24V version of the DC-DC circuit board for a Z3801A? I'd like to change out the board in my 48V unit, so both can be operated from the same supply to simplify things. If anyone has a working DC-DC board from a dead Z3801A, please let me know how much you want

[time-nuts] Simple questions on GPSDO

Well, we know I can't count, now :-) In my previous message I said that the GPSDO had been running four days. I meant two days. It's late and I should be in bed. That's my excuse and I'm sticking to it. Joe Gray KA5ZEC ___ time-nuts mailing list -- time

[time-nuts] Simple questions on GPSDO

Four nights ago, I hooked up one of my Z3801A's for the first time in over three years. When I last had things up and running, I was just getting into trying to understand how these devices work. Since then, I have forgotten much of what little I learned back then. Knowing the level of expertise he

Re: [time-nuts] DC-DC converter

Part #102-1690-ND > 9-36V in, 48V 1.04A out > $85.46, in stock > 9-pin module > > > Joseph Gray wrote: >> >> Does anyone know where I can get an inexpensive 12VDC to 48VDC >> converter to power one of my Z3801A's? I can find 12VDC to 24VDC >> units

[time-nuts] GPSDO software

I have a copy of GPSCon Pro that I bought several years ago. It seems to do ok, but I was wondering what others thought of GPS Control by BD Systems. Considering that the upgrade fee for GPSCon Pro is $39 and a new copy of GPS Control is $20, it's very tempting. Joe KA5ZEC ___

Re: [time-nuts] Fwd: DC-DC converter

> > Mike B. Feher, N4FS > 89 Arnold Blvd. > Howell, NJ, 07731 > 732-886-5960 > > > > -Original Message- > From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On > Behalf Of Joseph Gray > Sent: Friday, September 25, 2009 10:05 PM > To:

[time-nuts] Fwd: DC-DC converter

Oop. I just noticed that Jameco unit is not for 12VDC input. The "A" model here is the correct one: http://www.trcelectronics.com/Meanwell/sd-50a-24.shtml In any case, I still can't find something similar with a 48VDC output. -- Forwarded message ------ From: Joseph

[time-nuts] DC-DC converter

Does anyone know where I can get an inexpensive 12VDC to 48VDC converter to power one of my Z3801A's? I can find 12VDC to 24VDC units, like this one at Jameco: http://www.jameco.com/webapp/wcs/stores/servlet/ProductDisplay?langId=-1&storeId=10001&catalogId=10001&productId=212514 Thanks. _

Re: [time-nuts] HP-IB to USB

Since you're talking about LabView and GPIB, I thought I'd mention that I have a student copy of LabView 7 and a NI GPIB-Ethernet interface that I'm not using. Everything is like new and I have all the manuals and CDs. The software cost me $100. I'll take $150 for both the software and GPIB interfa

Re: [time-nuts] Power Back-up

Over the years, I have gotten several APC Smart UPS for next to nothing. In every case, all they needed were new batteries. Unless they are physically damaged or a circuit board is toasted, they seem to work fine. The attitude seems to be "The battery died, throw out the UPS and buy a new one." O

Re: [time-nuts] Power supply help

rnal April 1975 for a description of the 62605M. > > Bruce > > Joseph Gray wrote: >>> A good test would be to load it down to its rated current and voltage >>> and monitor noise with a clamp on current probe ( on one lead) >>> to a low frequency spectrum analyzer &g

Re: [time-nuts] Power supply help

> A good test would be to load it down to its rated current and voltage > and monitor noise with a clamp on current probe ( on one lead) > to a low frequency spectrum analyzer I don't have a spectrum analyzer. I emailed a friend about using his. > Open it up and look for tell tale signs of the or

Re: [time-nuts] Power supply help

t like starting into a short circuit (at leas the > one I used didn't and took out all the switching devices). > > Bruce > > Joseph Gray wrote: >> This is not strictly time-nuts related, but I know there are a lot of >> folks here who have and use HP surplus equip

[time-nuts] Power supply help

This is not strictly time-nuts related, but I know there are a lot of folks here who have and use HP surplus equipment. I have an opportunity to buy an HP 62615M switching power supply. It is rated 15VDC @ 40A. I have it adjusted to 13.8VDC. I have Googled, checked the Agilent site and BAMA, but ca

Re: [time-nuts] Mark Twain: My Watch // An Instructive Tail

); SAEximRunCond expanded to false Errors-To: [EMAIL PROTECTED] RETRY Love it! Twain is always good. I hadn't seen this story before. Thanks for sharing. - Original Message - From: "christopher hoover" <[EMAIL PROTECTED]> To: Sent: Wednesday, October 31, 2007 1:05 AM Subject: [time-nut

Re: [time-nuts] OT: Need HP 7475A Drivers for XP or Linux

You can find lots of documentation at: http://www.hpmuseum.net/exhibit.php?hwdoc=74. Much less painful to download. - Original Message - From: "Neon John" <[EMAIL PROTECTED]> To: "Discussion of precise time and frequency measurement" Sent: Saturday, October 20, 2007 11:07 PM Subject: R

Re: [time-nuts] OT: Need HP 7475A Drivers for XP or Linux

); SAEximRunCond expanded to false Errors-To: [EMAIL PROTECTED] RETRY Speaking of plotters, I know there are still some things that you need a plotter for, but the inkjets are faster, higher resolution and much _quieter_. A while back, I picked up a used HP 1220C for cheap. It does B-size. I do

Re: [time-nuts] OT: Need HP 7475A Drivers for XP or Linux

); SAEximRunCond expanded to false Errors-To: [EMAIL PROTECTED] RETRY > Now I just need pens and paper...(I have one offer for this, more sources > are welcome) > > Thanks to all, > > Eric I know that HP stopped making pens several years ago. I don't know if any other manufacturer still makes th

Re: [time-nuts] OT: Need HP 7475A Drivers for XP or Linux

); SAEximRunCond expanded to false Errors-To: [EMAIL PROTECTED] RETRY Until he fixes that URL, just paste the filename into the page URL after "Misc/". It worked for me. - Original Message - From: "Eric Fort" <[EMAIL PROTECTED]> To: "Discussion of precise time and frequency measurement"

Re: [time-nuts] OT: Need HP 7475A Drivers for XP or Linux

); SAEximRunCond expanded to false Errors-To: [EMAIL PROTECTED] RETRY I'm looking at the "Add Printer" dialog in WinXP right now. I see "HP-GL/2 Plotter" and "HP 7550 Plus" listed. Shouldn't one of those work? - Original Message - From: "Didier Juges" <[EMAIL PROTECTED]> To: "'Discussi

[time-nuts] Big GPS clock

); SAEximRunCond expanded to false Errors-To: [EMAIL PROTECTED] RETRY http://www.sparkfun.com/commerce/present.php?p=GPSClock-1 I wouldn't recommend putting this clock in your bedroom :-) ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe

Re: [time-nuts] Prologix and Windows 98SE

); SAEximRunCond expanded to false Errors-To: [EMAIL PROTECTED] RETRY I believe that the later versions of the DOS BASIC compiler support more than two COM ports. I'm not sure, but I believe that MS must have released this old software for free use, as I have seen it posted on many (non-pirate)

Re: [time-nuts] M$-Vi$ta-compliant PC RTC clock card?

let me stop > Or pause that service. > > Jim K7KK > > -----Original Message- > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On > Behalf Of Joseph Gray > Sent: Wednesday, 2007 September 19 18:12 > To: Discussion of precise time and frequency measurement > Subje

Re: [time-nuts] M$-Vi$ta-compliant PC RTC clock card?

); SAEximRunCond expanded to false Errors-To: [EMAIL PROTECTED] RETRY I don't remember the particulars, but not too long ago I read that someone figured out how to load unsigned drivers on Vista. You'll have to Google for it, as I don't remember where the details were posted. It is technically a

Re: [time-nuts] Bush Accepts Pentagon Position on GPS

); SAEximRunCond expanded to false Errors-To: [EMAIL PROTECTED] RETRY I don't think that there has been truthful, unbiased new reporting since the days of Walter Cronkite. "And that's the way it is". :-) - Original Message - From: "Mike S" <[EMAIL PROTECTED]> To: "Discussion of precise

Re: [time-nuts] Scanning A Book (was Re: 10811A)

); SAEximRunCond expanded to false Errors-To: [EMAIL PROTECTED] RETRY As Christopher said, the easiest method is the cut-sheet feeder. If you don't want to destroy the book, there is a scanner that will let you scan to within 1/4 inch of the binding - the Opticbook 3600. You can find it online

Re: [time-nuts] NTP offset

What type of processing is being done to the audio? What OS is everything running on? Do you have any ability to configure the system, or is it a closed box? If it is a Windows system and you can install software on it, you might try ASIO2All. It is a universal audio driver that supports the AS

Re: [time-nuts] NTP problem on Windows

_ > > You might want to give this version a try. This is the version I'm using. > > Rob > > > -Original Message- > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On > Behalf Of Joseph Gray > Sent: 17 May 2007 19:27 > To: Dis

Re: [time-nuts] NTP problem on Windows

I'm using this version: [EMAIL PROTECTED] (Ignore the hyperlink. Outlook Express insists on thinking this is an email address, because of the @ symbol.) Restarting the NTP service on that PC has fixed the problem for now. That PC has been running continuously since 17 March. I only noticed the

Re: [time-nuts] NTP problem on Windows

me-nuts] NTP problem on Windows > > --- Joseph Gray <[EMAIL PROTECTED]> wrote: > >> As a test, I just restarted the NTP service on the PC that was off. >> It is now keeping the correct time. Strange. > > Not so strange. > > I routinely reboot all of our Windows machi

Re: [time-nuts] NTP problem on Windows

; Bill Hawkins > > > -Original Message----- > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On > Behalf Of Joseph Gray > Sent: Wednesday, May 16, 2007 8:13 PM > To: Discussion of precise time and frequency measurement > Subject: Re: [time-nuts] NTP problem on Window

Re: [time-nuts] NTP problem on Windows

>I am not familiar with the Meinberg software so I am guessing that if you > are running that NTP software you would not be using Windows time service? > If you don't need Windows time service, go into services and stop the > windows time service and set it to "manual" or "disabled". My thinking i

Re: [time-nuts] NTP problem on Windows

> At my QTH both of those servers are Stratum 2 and within a few hundredths > of a second of the Right Time. > > Odd that you see them as Stratum 3, maybe you've got a firewall pulling > tricks on you :-). > > The best way to configure a NTP client is with multiple (preferably > 3 or 4) servers, id

Re: [time-nuts] NTP problem on Windows

> What are the actual IP addresses of the servers they are syncing to? > > Bruce The one with the correct time: Sync to: 64.5.1.130 Offset: 38.346ms Stratum: 3 The one with the wrong time: Sync to: 24.123.66.139 Offset: -1.074ms Stratum: 3 ___ time-n

Re: [time-nuts] NTP problem on Windows

> Are both machines syncing to the same ntp erver? > One or both of them of them hasn't synced to 127.127.1.0 by any chance? > > Bruce Although they are both using the pool at ntp.org, they are currently syncing to different servers. They both are syncing to stratum 2 servers. Neither is syncing

[time-nuts] NTP problem on Windows

I am running the Meinberg NTP software on two PCs. Both PCs are running WinXP w/SP2, both are on the same network and both are syncing to servers at pool.ntp.org. In the past, both clocks have shown that the two PCs had the same time. Today, I just noticed that one of the PCs is running about 9

Re: [time-nuts] LF time signal emulation

I wonder if building a passive loop antenna would suffice? This trick is used with AM BCB radios. - Original Message - From: "Palfreyman, Jim L" <[EMAIL PROTECTED]> To: Sent: Monday, April 30, 2007 1:13 AM Subject: [time-nuts] LF time signal emulation > Folks, > > Living in Australia

Re: [time-nuts] Gentlemen, unlimber your Broadband Connections

>As a practical matter there are few places to get .pdf docs with the >required >TOC, LOF and LOT indented bookmarks so I usually make my own. I have >gotten >Microchip to change from chapter titles that were meaningless to their now >fine >bookmarks. But so far my attempts to get the Army to

Re: [time-nuts] Gentlemen, unlimber your Broadband Connections

> Yeah, "bookmark" is Adobe-ese for what I was referring to as a PDF > index. Even better would be the ultimate tool for finding stuff in > doc files - the permuted index. Unfortunately that would mean a LOT > of OCR work. > > John Coincidentally, I was just trying out a copy of Acrobat 8 Pro fo

Re: [time-nuts] Looking for Wavecrest Visi

Yep, you missed where I also recommended just that possibility. - Original Message - From: "Mike Suhar" <[EMAIL PROTECTED]> To: "'Discussion of precise time and frequency measurement'" <[EMAIL PROTECTED]> Sent: Thursday, April 12, 2007 6:08 PM Subject: Re: [time-nuts] Looking for Wavecre

Re: [time-nuts] DST with TrueTime NTS-100

I've used several pieces of network hardware that almost got this right. They allowed you to enter start and end dates, but only by calendar date. You couldn't say 2nd Sun or such. That made the feature useless. I wonder why they bothered? - Original Message - From: "Jason Rabel" <[EMA

Re: [time-nuts] Looking for Wavecrest Visi

> I will try that. I may have to do a dual boot on that machine if it > doesen't > work out on XP. Installing Win98 after XP has been installed is an > entirely > other discussion... > > bye, > Said Another way to dual boot that would be a lot easier than trying to graft Win98 onto a WinXP driv

Re: [time-nuts] Looking for Wavecrest Visi

> how do I do that, and still have the old software use the NI-488 drivers? > > thanks, > Said I don't know whether that old software will have a problem with drivers on WinXP or not. As for compatibility mode, that applies to the program executable itself. It changes settings under WinXP to ma

Re: [time-nuts] Looking for Wavecrest Visi

> I am trying to set up a Win98 machine with GPIB since I > bought a quite old version of Visi from Wavecrest that runs > only on Win98. Did you try using "compatibility mode" on WinXP to run that software? ___ time-nuts mailing list time-nuts@febo.com

Re: [time-nuts] GPS question

From: "Joseph Gray" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]>; "Discussion of precise time and frequency measurement" Sent: Friday, April 06, 2007 8:47 AM Subject: Re: [time-nuts] GPS question >> Try logging the positions to a PDA or normal computer.

Re: [time-nuts] GPS question

> Try logging the positions to a PDA or normal computer. Look at the values. > How much do they wander? Compare with the positions from the Oncore in the > GPSDO. This will give you a much better understanding or "feeling" of the > quality of the solutions. The Garmin has a USB port, but no serial

[time-nuts] GPS question

Am I correct in assuming that the position given by a WAAS enabled handheld GPS unit is more accurate than the position reported by my Z3801? Specifically, I tried a Garmin eTrex Legend Cx with WAAS enabled and used averaging mode for the waypoint. On a related question, the eTrex reported that

Re: [time-nuts] metric timekeeping

I'm waiting for when we all begin using stardates :-) - Original Message - From: "David Dameron" <[EMAIL PROTECTED]> To: Sent: Sunday, April 01, 2007 3:00 PM Subject: [time-nuts] metric timekeeping > Hi Chuck, > The French tried that about 1794-1795 (normal calendar year dates). Each >

[time-nuts] Anti-time-nuts clock

When "close enough" is good enough :-) http://www.thingsyouneverknew.com/website/store/product_detail.asp?UID=2007020820322012&item%5Fno=80153&keyword=F1JS&cat%5Fkeyword=F1JS&search%5Fpage%5Fno=&page%5Fno=

Re: [time-nuts] Question for the cesium nuts.

Back in the days of cameras that used film :-) Nikon used to make a very nice waterproof and rugged camera. I forgot the model, but it was made for divers. I knew several people who had one, but they were all cavers. Needless to say, these cameras took a lot of abuse in a cave. - Original M

Re: [time-nuts] HP 5370A Frequency counter Problem(s)

There isn't anything of importance on the front of mine. It just has the HP logo, HP name and the phrase "5370A UNIVERSAL TIME INTERVAL COUNTER". The back side looks like it was silkscreened in black. - Original Message - From: "Jack Hudler" <[EMAIL PROTECTED]> To: "'Discussion of preci

Re: [time-nuts] HP 5370A Frequency counter Problem(s)

Many businesses that sell glass also sell Plexiglass. - Original Message - From: "Bill Janssen" <[EMAIL PROTECTED]> To: "Discussion of precise time and frequency measurement" Sent: Thursday, March 22, 2007 5:34 PM Subject: Re: [time-nuts] HP 5370A Frequency counter Problem(s) > Jack H

Re: [time-nuts] WWV spoof

I love it! Thanks for the link. - Original Message - From: "Bill Jones, K8CU" <[EMAIL PROTECTED]> To: "Discussion of precise time and frequency measurement" Sent: Monday, March 19, 2007 3:53 PM Subject: [time-nuts] WWV spoof > This came today from a "non-time-nuts" email source: > > S

Re: [time-nuts] Coax switch

nt: Sunday, March 18, 2007 5:18 PM Subject: Re: [time-nuts] Coax switch > On Sun, 18 Mar 2007 11:56:44 -0600, "Joseph Gray" <[EMAIL PROTECTED]> > wrote: > >>The grounds are also switched. > > Really!? I don't think I have ever seen a coax switch or relay

Re: [time-nuts] Coax switch

The grounds are also switched. - Original Message - From: "Richard W. Solomon" <[EMAIL PROTECTED]> To: "Discussion of precise time and frequency measurement" Sent: Sunday, March 18, 2007 6:54 AM Subject: Re: [time-nuts] Coax switch > That's 6 BNC connectors, the switch has only three.

Re: [time-nuts] Coax switch

>I assume these are *signal* switches, as opposed to *power* switches? > > Didier Well, as I said, they have BNC connectors on them. Also, from the markings on the panel they were mounted in, they were part of some type of telemetry system. I was going to try hooking the one I have up to a sign

Re: [time-nuts] Coax switch

I just checked with a meter and they are DPDT. I read about 0.2 Ohms from the center BNC when switched to each outer BNC. - Original Message - From: "Joseph Gray" <[EMAIL PROTECTED]> To: "Discussion of precise time and frequency measurement" Sent: Saturd

Re: [time-nuts] Coax switch

> Just a guess, but SPDT toggle switch ? > How much does he want for them ? > > Regards, Dick, W1KSZ I would assume so. I have one and will have to put a meter on it. I was curious if anyone knew what frequency range these might be good for. As for price, he said he would probably put them on eb

[time-nuts] Coax switch

The local surplus guy got in a few dozen coax switches. The only markings on them say "Type DSWA0". Dimensions are about 2.6" H x 2" D x 1" W. There is a toggle switch on the front and three BNC connectors on the back. I can't find any information about these. Does anyone know anything about th

Re: [time-nuts] Happy Leap Hour Day !

> might take one 2 AM transition. Or it might work in > another hour when 11-Mar-2007 UTC is over. Can > you try it again a few times and tell me when it first > comes up with the correct time? Tom, I did another forced sync and now it has the correct time. __

Re: [time-nuts] Happy Leap Hour Day !

> What make/model? This is interesting. I have seen > something like this before. It might work tomorrow. It > might take one 2 AM transition. Or it might work in > another hour when 11-Mar-2007 UTC is over. Can > you try it again a few times and tell me when it first > comes up with the correct ti

Re: [time-nuts] Happy Leap Hour Day !

Tom, I was under the same impression as you, regarding RC clocks. However, I just pulled/replace the battery on one of mine and then forced an update. It still is an hour off. Am I missing something, or is the clock? - Original Message - From: "Tom Van Baak" <[EMAIL PROTECTED]> To: "Dis

Re: [time-nuts] Happy Leap Hour Day !

s nice while it > lasted :-) > > Well, on the positive side, you may be off by an hour, but the seconds > will be right :-) > > I plan to take tomorrow off anyhow, that will give me another day to > adjust my own body clock (with is not disciplined to anything...) > > Didier

Re: [time-nuts] Happy Leap Hour Day !

> I suppose the time signal includes DST info and these clocks do not use > it, while the Casio does? Or is the Casio a new model that may have the > right DST programming? > > Didier KO4BB The clocks and the watch were all purchased within the last four months. Of course, I don't know how long t

Re: [time-nuts] Happy Leap Hour Day !

I have two Chinese-made "atomic clocks" that did not adjust to the new time. My Casio "atomic watch" did adjust correctly. - Original Message - From: "Brian Kirby" <[EMAIL PROTECTED]> To: "Time Nuts" Sent: Sunday, March 11, 2007 6:32 AM Subject: [time-nuts] Happy Leap Hour Day ! > Hav

Re: [time-nuts] GPS ant info

Matsushita is the parent company of Panasonic. - Original Message - From: <[EMAIL PROTECTED]> To: Sent: Sunday, March 04, 2007 10:02 PM Subject: [time-nuts] GPS ant info >I think I have one of these. > > _http://www.panasonic-electric-works.de/pewde/de/html/1016.php_ > (http://www.pana

Re: [time-nuts] FS: SPECTRACOM 8140 Distribution Amp

I'll take it. Can you email me a picture? - Original Message - From: "Richard W. Solomon" <[EMAIL PROTECTED]> To: "Time-Nuts" Sent: Friday, February 23, 2007 8:46 PM Subject: [time-nuts] FS: SPECTRACOM 8140 Distribution Amp > This one has Option 7 installed, takes 10 MHz in and > has

Re: [time-nuts] Fine print on HP 5334B

Didier, thanks a lot for the manuals. I just tried some of the performance tests on my 5370A and I'm not getting what the manual says. Starting with the initial tests in Table 4-1, I'm good until Step 13. Instead of 100nS, I read 10nS all the way through Step 17. Pressing COMPLMNT shows -90nS. Ste

[time-nuts] Tracor 888A

I just picked up a Tracor 888A Linear Phase Recorder at the local surplus place. I thought it might be worth tinkering with, for only $7. I did some Googling, but can't find any information on this device. Can anyone help?. Thanks. ___ time-nuts mail

Re: [time-nuts] TTL to RS-232

Great tip. Thanks for sharing. You're lucky to have a decent surplus place locally. If I were to walk into the only so-called surplus place we have and asked for a MAX232 chip, I'd get blank stares. If it's not 50 years old, or a new clone PC component, he won't have it or know what it is.

Re: [time-nuts] ACE-III GPS receivers

I believe that laptop hard drives use that size ribbon cable. - Original Message - From: "Didier Juges" <[EMAIL PROTECTED]> To: "Discussion of precise time and frequency measurement" Sent: Saturday, January 27, 2007 6:31 PM Subject: Re: [time-nuts] ACE-III GPS receivers > Hi Jason, >

Re: [time-nuts] Odd request

Oh, that would look so nice, next to some of my tube radios! - Original Message - From: "Dave Brown" <[EMAIL PROTECTED]> To: "Discussion of precise time and frequency measurement" Sent: Thursday, January 25, 2007 4:27 PM Subject: Re: [time-nuts] Odd request > Yes- XYL, SWMBO, whatever

Re: [time-nuts] HP 58517A Distribution Amp

d I use 10% or 12% of that now. > > He surmised they may have been swapping machines, even though he said he > had no report of maintenance being done at the time. > > All is good now, and has been since, as it had been since I went with > Globat 3 years ago. > > I'll attribut

Re: [time-nuts] HP 58517A Distribution Amp

'll move it with the other manuals at > http://www.ko4bb.com/ham_radio/Manuals > > Thanks in advance > > Didier KO4BB > > > Joseph Gray wrote: >> I have a PDF for a 58516A, if that will help. >> >> > > > ___ >

Re: [time-nuts] HP 58517A Distribution Amp

So, does anyone still need the PDF that I have? - Original Message - From: "Randy Warner" <[EMAIL PROTECTED]> To: "Discussion of precise time and frequency measurement" Sent: Wednesday, January 24, 2007 9:33 AM Subject: Re: [time-nuts] HP 58517A Distribution Amp > Guys, > > Here's the

Re: [time-nuts] HP 58517A Distribution Amp

I have a PDF for a 58516A, if that will help. - Original Message - From: "Colin Bradley" <[EMAIL PROTECTED]> To: Sent: Tuesday, January 23, 2007 10:42 PM Subject: [time-nuts] HP 58517A Distribution Amp > Would anyone have a pdf or link for the manual on the HP 58517A L1 > distribution

Re: [time-nuts] Looking For Tektronix Knobs 22xx Series

m_radio/Manuals > > Thanks in advance > > Didier KO4BB > > Joseph Gray wrote: >> I have a PDF of both the Operation and Service manuals for a 2215A. I >> don't >> remember where I found them. I can post them on a file sharing site if >> anyone wants t

Re: [time-nuts] Looking For Tektronix Knobs 22xx Series

I have a PDF of both the Operation and Service manuals for a 2215A. I don't remember where I found them. I can post them on a file sharing site if anyone wants them. The files are 36MB/38MB in size. - Original Message - From: "Jason Rabel" <[EMAIL PROTECTED]> To: "'Discussion of precise

Re: [time-nuts] Time syncing question

> How accurate and precise do you need the > time stamp to be? I assume time resolution is probably one second, so > you do not need more accuracy than that between updates. Yes, keeping the time synced to less than 1 S is preferred. Afterall, if I'm going to bother doing this, I should at least

Re: [time-nuts] Time syncing question

For various reasons, I can't change the software on the device. It would be even more impossible to modify the hardware. The device's time is settable at any time via either serial port or HTTP, as I mentioned earlier. Considering what I am allowed to do with the device, I think an external pro

Re: [time-nuts] Time syncing question

Hal, I thought about doing this and it would be workable. However, something in me just doesn't like the idea of brute forcing it. Tom's elegant solution appeals to me more. Thanks for the suggestion, though. > For something like a phone system, I might try just smashing it to the > right > tim

Re: [time-nuts] Time syncing question

Tom, your solution looks like just the type of thing I need. Thanks a lot for sharing it. I especially like the simplicity of your approach. > Here's what I did on a similar project a while back. > Your specs aren't quite the same as mine, but > you get the idea. My goal was to slowly adjust > ti

Re: [time-nuts] Progress of my HP Z3801A

I just took a look at your software. You are to be commended on your clear and detailed documentation. Most GPL software documentation seems to be a few cryptic lines that assume you don't need the documentation anyhow. > You can get the software from here: > > http://www.gs3tech.com/ > > under

Re: [time-nuts] Time syncing question

Tom, thanks for your very clear and simple reply. I may be over thinking about the problem and trying to make it more complicated than it is. The target device is a phone system. The time is used for call logging and display on the phones. Considering that the device's RTC doesn't keep very goo

[time-nuts] Time syncing question

I have a piece of equipment that has its time set either via a serial port or via HTTP. After initial setting, the device keeps its own time (although badly). The device has no NTP capability itself. Although I'm describing a particular piece of equipment, I have seen many other devices that wor

Re: [time-nuts] MJD Javascript?

You can steal some routines here: http://www.merlyn.demon.co.uk/astron-3.htm - Original Message - From: "John Ackermann N8UR" <[EMAIL PROTECTED]> To: "Discussion of precise time and frequency measurement" Sent: Sunday, August 20, 2006 12:22 PM Subject: [time-nuts] MJD Javascript? > B

Re: [time-nuts] GPS Distribution amplifier

I did eventually get an SMC connector. However, I may take a look at converting it later, to eliminate the extra 5V supply. Did you have to remove the circuit board from the metal housing to make the mod? If so, that would make it much more difficult. > The PCB is the same for both models. > >

Re: [time-nuts] GPS Distribution amplifier

I picked up an HP 58516A (four-port) on ebay last year, very cheaply. I didn't need four ports, but the price was right. Magnus, you probably already know this, but just in case you don't, I'll mention it. Those HP splitters come in two varieties. On one, the 5VDC is fed into port 1. On the oth

Re: [time-nuts] HP 5370A manual

> Even I (owner of www.g8wrb.org) forgot that was there so did not mention > it when I see someone (you?) needed an A manual, but was using a 5370B > manual!! > -- > Dr. David Kirkby Yes, that may have been me. I was looking for an "A" manual some months ago and could only find the "B" manual. T

[time-nuts] HP 5370A manual

I have been looking for the operation/service manual for my HP 5370A for some time. I had previously found the "B" manual online. Just recently, I found the "A" manual at this URL: http://www.g8wrb.org/data/HP/ You should also find it on the Agilent site soon, as I sent them the link.

Re: [time-nuts] Motorola Oncore PVT documenation

I found some additonal documentation at this URL: http://www.bhargavaz.net/gps/ - Original Message - From: "Randy Warner" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]>; "Discussion of precise time and frequency measurement" Sent: Monday, July 24, 2006 9:22 AM Subject: Re: [time-nuts] Mo

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