Re: [time-nuts] Counter OCXO behaviour

2013-01-15 Thread David C. Partridge
Yes the 1992 4E adjustment is a bear. Mine behaves pretty much the same, ISTR it took me a few days to get it adjusted to my satisfaction and it was still drifting a bit. Interestingly I saw a 1992 with a built in Rb on eBay (I think in France) some years back but the price went way beyong my

Re: [time-nuts] A New Years Resolution.

2013-01-03 Thread David C. Partridge
Please don't do that - start a complete new thread instead by posting a completely new message (i.e. not a reply). The threading on many engines doesn't use the subject line at all. Regards, David Partridge -Original Message- From: time-nuts-boun...@febo.com

[time-nuts] Sir Patrick Moore

2012-12-10 Thread David C. Partridge
Related to time-nuttery as astonomical observation was used for time-keeping until C20. Sir Patrick Moore, the great amateur astonomer died yesterday at the age of 89. A gentleman, astronomer, and true scholar. His death was predicatable as he's been very ill for a long time, but nonetheless

Re: [time-nuts] EIP545A 18GHz counter query

2012-11-29 Thread David C. Partridge
Hmmm you run the risk of deafening the counter with 5Vpp (2.5V into 50R). Dave -Original Message- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of Chris Wilson Sent: 29 November 2012 15:57 To: Discussion of precise time and frequency measurement Subject:

Re: [time-nuts] 12.8 MHz OCXO

2012-11-24 Thread David C. Partridge
With only 0.25ppm needed would a TCXO do? Howsabout this: http://www.kuhne-electronic.de/en/products/special-offer/128-mhz-crystal-oscillator-tcxo.html or http://www1.futureelectronics.com/doc/IQD%20FREQUENCY%20PRODUCTS/E4191LF.pdf or even http://cgi.ebay.com/310376642284 Dave

Re: [time-nuts] For my whole life timezones have been weird

2012-11-03 Thread David C. Partridge
Windows actually CHANGES the RTC at DST changover, rather than let it tick montinically, and adjust the offset. This is what is bad ... Dave Regards, David Partridge -Original Message- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of

Re: [time-nuts] How to start a new topic

2012-11-02 Thread David C. Partridge
Yes, you send a mail with a new subject. Please don't CHANGE the subject of a thread or topic, as that doesn't actually start a new topic. I also suggest that you send email to the reflector as Plain Text. HtH, David Partridge -Original Message- From: time-nuts-boun...@febo.com

Re: [time-nuts] Re; New Wrist watch

2012-09-10 Thread David C. Partridge
GUT (Gallifree Universal Time) of course. Dave -Original Message- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of Don Latham Sent: 10 September 2012 18:39 To: Tom Van Baak; Discussion of precise time and frequency measurement Subject: Re: [time-nuts] Re;

Re: [time-nuts] Thunderbolt GPS and frequency divider loadingquestion.

2012-08-16 Thread David C. Partridge
I'd put the distribution amplifier between the TB and the divider Dave -Original Message- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of Bob Camp Sent: 16 August 2012 02:23 To: Chris Wilson; Discussion of precise time and frequency measurement Subject:

Re: [time-nuts] Thunderbolt GPS and frequency divider loading question.

2012-08-14 Thread David C. Partridge
The input of the divider is 50 ohm terminated. Dave -Original Message- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of Chris Wilson Sent: 13 August 2012 22:26 To: Discussion of precise time and frequency measurement Subject: [time-nuts] Thunderbolt GPS

Re: [time-nuts] I am looking for the email address for DavidPartridge

2012-07-26 Thread David C. Partridge
- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of David C. Partridge Sent: 25 July 2012 10:29 To: 'Discussion of precise time and frequency measurement' Subject: Re: [time-nuts] I am looking for the email address for DavidPartridge david.partri...@perdrix.co.uk See

Re: [time-nuts] I am looking for the email address for David Partridge

2012-07-25 Thread David C. Partridge
david.partri...@perdrix.co.uk See also www.perdrix.co.uk where you'll find a write up on the divider. Sorry to say, there are no made up boards left. The minimum order that's economic is for 100 made up boards, so I need a lot of interest to justify another batch. I have a very few

Re: [time-nuts] Another ThunderBolt cabling question

2012-06-13 Thread David C. Partridge
No you can't load the 10MHz (or the PPS) with five instruments in parallel. You need a distribution amplifier. Dave -Original Message- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of Chris Wilson Sent: 13 June 2012 22:33 To: Discussion of precise time

Re: [time-nuts] Serial port server .. any interest in a write up on using ?

2012-05-22 Thread David C. Partridge
Another thread where the first mail never got to me ... I too am interested - I wonder why I have this problem too?! Dave -Original Message- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of Jerry Mulchin Sent: 22 May 2012 04:51 To: Discussion of

Re: [time-nuts] Why 9,192,631,770 ??

2012-05-08 Thread David C. Partridge
It's unlikely you'll ever see a negative leap second - the earth's rotation is slowing down, not speeding up. Dave -Original Message- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of Jerry Mulchin Sent: 09 May 2012 01:56 To: j...@quikus.com; Discussion

Re: [time-nuts] Anyone from Italy here ?

2012-05-02 Thread David C. Partridge
No, Italian law doesn't require DOB or place of birth registering for purchases, I suspect his email has been hi-jacked by someone who's attempting to get into the identity theft business. Dave -Original Message- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On

[time-nuts] Message for Robert Berg

2012-04-30 Thread David C. Partridge
As it is not clear to me that Robert has received my emails, I am sending this via the list. My apologies for the bandwidth :/ Robert, Yes I have the Tektronix 7T11 to 7T11A conversion kits available, and you may pay using Paypal to this email. Please acknowledge Thanks David Partridge

Re: [time-nuts] Missing parts of threads

2012-04-18 Thread David C. Partridge
You are not alone ... No, it's not a Spam filter - I check Spam folders regularly and my ISP doesn't pre-filter. Dave -Original Message- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of Rob Kimberley Sent: 18 April 2012 12:54 To: 'Discussion of precise

Re: [time-nuts] Missing parts of threads

2012-04-18 Thread David C. Partridge
Even wierder - there was a reply to your post at least 10 minutes BEFORE your post arrived. Someone is messing with causality. Dave -Original Message- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of Rob Kimberley Sent: 18 April 2012 12:54 To:

Re: [time-nuts] Best location for a GPS antenna...?

2012-04-12 Thread David C. Partridge
A lightening strike anywhere within 10ft will probably total your antenna, the coax and the GPS receiver attached to it. D. -Original Message- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of Heinzmann, Stefan (ALC NetworX GmbH) Sent: 12 April 2012

Re: [time-nuts] 5370B Manual - Searchable?

2012-04-08 Thread David C. Partridge
Then I suggest we stick to Didier's who already has a timing wiki I believe. Dave -Original Message- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of Poul-Henning Kamp Sent: 08 April 2012 08:10 To: Discussion of precise time and frequency measurement

Re: [time-nuts] Best reason

2012-03-29 Thread David C. Partridge
I'm currently have to convince management that our 6-1/2 DMM (0.01% uncertainty) can't be used to test the 0.1ppm DC Source that we're repairing. Don't bother, just send it to me (once you've fixed it natch) :) On a more serious note what it this DC source that can manage 0.1ppm - the only

Re: [time-nuts] LEA-6T Group buy

2012-03-27 Thread David C. Partridge
If you are in the UK anything over about USD25 gets hit for customs on entry. D. -Original Message- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of Attila Kinali Sent: 27 March 2012 08:26 To: Discussion of precise time and frequency measurement Subject:

Re: [time-nuts] Distribution amp - Use a video amp unit ?

2012-03-26 Thread David C. Partridge
An Si junction can tolerate pretty high temperatures for a short while, or even a long while - Bob Pease reported having had a component sat on the hot end of a soldering iron for about 24 hours and still working afterwards ... I've never seen a description of how they make those glass cased

[time-nuts] OT: A kit to convert a Tektronix 7T11 to a 7T11A is now available.

2012-02-17 Thread David C. Partridge
I've produced a kit to convert a Tektronix 7T11 Sampling Sweep Unit to a 7T11A (this allows you to use it in a 7854 'scope). I am offering this kit at GBP22.50 (about USD36) plus postage which is GBP 5 to the UK, and GBP10 to the rest of the world. I have PCBs on hand to fulfil 7 orders

Re: [time-nuts] Entering Altitude for Thunderbolt

2012-02-12 Thread David C. Partridge
Or even better get Lady Heather to do the 48 hour survey. Dave -Original Message- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of Azelio Boriani Sent: 12 February 2012 16:31 To: Discussion of precise time and frequency measurement Subject: Re:

Re: [time-nuts] Why a 10MHz sinewave output?

2012-02-08 Thread David C. Partridge
Hey, you're not supposed to actually read those planning applications for hyperspace bypasses! D. -Original Message- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of Mark Sims Sent: 08 February 2012 16:54 To: time-nuts@febo.com Subject: [time-nuts] Why

Re: [time-nuts] Racal-Dana 1991 w. Option 4C - what is that ?

2012-01-31 Thread David C. Partridge
It's a 5Mhz crystal with a frequency doubler at the output. Dave -Original Message- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of cfo Sent: 30 January 2012 17:25 To: time-nuts@febo.com Subject: Re: [time-nuts] Racal-Dana 1991 w. Option 4C - what is

Re: [time-nuts] New unit of time measurement

2012-01-16 Thread David C. Partridge
Hehe - try driving in Napoli some day - makes Roma seem positively sane, and Torino is civilised compared to Roma! D. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and

Re: [time-nuts] New precision watch

2011-12-21 Thread David C. Partridge
But the Admiralty still wouldn't pay up ... Dave -Original Message- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of Don Latham Sent: 19 December 2011 19:50 To: Discussion of precise time and frequency measurement Subject: Re: [time-nuts] New precision

Re: [time-nuts] My Racal-Dana 1992

2011-12-19 Thread David C. Partridge
The first reading after turn-on was about 370 Hz (yes, Hertz) low. After 20 minutes the initial warm-up was complete and the reading was 238 counts (e.g. 0.238 Hz) above 10 MHz - well within the 1e-7 specification. That's awfully similar to how mine behaves. I'm currently doing my annual

Re: [time-nuts] My Racal-Dana 1992

2011-12-18 Thread David C. Partridge
Strange, the fine adjustment on mine doesn't have any detents. Regards, David Partridge -Original Message- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of Charles P. Steinmetz Sent: 18 December 2011 07:21 To: Discussion of precise time and frequency

Re: [time-nuts] My Racal-Dana 1992

2011-12-16 Thread David C. Partridge
1. You can get a 10 sec. gate time and therefore .001 Hz resolution at 10 MHz by holding the 'up arrow' key for about 2 sec. It's in the manual, once. If you blink you miss it. What page please - I never spotted that ... Regards, David Partridge -Original Message- From:

Re: [time-nuts] T-Bolt Companion

2011-10-28 Thread David C. Partridge
of shipping companies which is getting extreme). Cheers David Partridge -Original Message- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of David C. Partridge Sent: 27 October 2011 17:10 To: 'Discussion of precise time and frequency measurement' Subject

Re: [time-nuts] T-Bolt Companion

2011-10-27 Thread David C. Partridge
Run, don't walk to: http://www.perdrix.co.uk/FrequencyDivider/index.html The cost is GBP75 including shipping. There's a link on the page to email me. Regards, David Partridge -Original Message- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of

Re: [time-nuts] Could someone please recommend GPIB card

2011-10-10 Thread David C. Partridge
Talking of 82357B USB-GPIB adapter - does anyone have any experience of the Chinese clones, for example: http://cgi.ebay.co.uk/180734845086 Thanks Dave -Original Message- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of Azelio Boriani Sent: 10 October

Re: [time-nuts] Making a 10811 better

2011-09-21 Thread David C. Partridge
Howsabout HFC-236fa - very similar properties to R114 but not banned. Dave -Original Message- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of Jim Lux Sent: 20 September 2011 22:38 To: time-nuts@febo.com Subject: Re: [time-nuts] Making a 10811 better On

Re: [time-nuts] Making a 10811 better

2011-09-20 Thread David C. Partridge
Xenon Dave -Original Message- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of Dick Moore Sent: 20 September 2011 19:40 To: time-nuts@febo.com Subject: Re: [time-nuts] Making a 10811 better Is there a relatively inert gas that has much higher thermal

Re: [time-nuts] Frequency Comparator Ideas needed.

2011-08-10 Thread David C. Partridge
OK, you've described what you think of as the solution to your problem, but what actually is your problem? In other words what is your objective. Are we looking at something like a phased array radar here? If so there is probably quite a bit of stuff out there that isn't classifed by now as

Re: [time-nuts] 50:50 duty from a PRS10

2011-07-22 Thread David C. Partridge
Hello, I have a PRS10 rubidium which gives a 1pps output. The output is a 10 us positive pulse. I need to convert that to a 50:50 duty cycle pulse. Still 1pps. I'm hoping for a simple circuit rather than having to use a pic. I don't mind a bit of propagation delay, but I need to

Re: [time-nuts] Am I the only Time Nut who doesn't wear a watch?

2011-07-11 Thread David C. Partridge
My (non-chronometer) Breitling A17045 which came back from a service in May is running at about 1 seconds slow per day over a month (it is about a month since I last checked against the GPS, and it is about 25s slow). However I think this is far better than should be expected Dave

[time-nuts] FS: Frequency Divider Boards

2011-07-08 Thread David C. Partridge
I still have a number of these left. The cost is GBP75 including PP to anywhere in the world (GBP70 for UK customers). For more details please goto http://www.perdrix.co.uk and follow the links Please reply OFF LIST mailto:david.partri...@perdrix.co.uk Regards, David Partridge

[time-nuts] Bob Pease

2011-06-20 Thread David C. Partridge
From Dave Jones: Word has just filtered through Twitter that Bob Pease was killed in a car accident. This one by the sounds of it: http://www.mercurynews.com/bay-area-news/ci_18310586?source=rssnclick_check=1 In a sad twist, it is reported that he was returning from Jim Willam's memorial. A

Re: [time-nuts] Overheard from NASA

2011-05-10 Thread David C. Partridge
The problem is to fit the x-ray pulsar into the spacecraft without a) killing everyone and b) collapsing the spacecraft under its gravitational field :-) Regards, David Partridge -Original Message- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of Jim

Re: [time-nuts] HP 3314A ROMs

2011-04-18 Thread David C. Partridge
If you read the auction carefully it says AUCTION PRICE IS FOR ONE(1) PIECE. So check with vendor if price is for (1) or (20)!!! Dave -Original Message- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of Dave M Sent: 18 April 2011 17:56 To:

Re: [time-nuts] T.I. experimenting - newbie question

2011-04-03 Thread David C. Partridge
With any decent TDR you can SEE all the connections so you can measure the cable length (+/- a few mm) directly. Regards, David Partridge -Original Message- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of Magnus Danielson Sent: 03 April 2011 12:46 To:

Re: [time-nuts] Commercial Assembly - Poll

2011-03-26 Thread David C. Partridge
That's what I did for my Frequency Divider boards, as the overall balance of those interested was for boards made up with all the SMT stuff done. Whether I'd pay the $50 or $100 extra (more likely to be about $50 if you're doing a reasonable run) for a partly made board would depend on what I

Re: [time-nuts] Parts Selection

2011-03-25 Thread David C. Partridge
Well, if you ship a paste mask with the PCB I've no problem at all, but that's not likely to happen, so it's down to hand work. I've done that before now and while it's not the easiest job, it's quite doable with a microscope or the eyes of an eagle. Dave -Original Message- From:

[time-nuts] Frequency Divider board phase noise / jitter

2011-03-16 Thread David C. Partridge
Knowing the audience here, I'm half expecting that some of you who purchased my divider boards will have done some measurements on my board ... If you have some results to share, I and others would be interested to know. Many thanks, David Partridge

Re: [time-nuts] Decade Divider Wanted

2011-03-15 Thread David C. Partridge
Richard, I still have some left - but discrete 74AC and HC logic with ADCMP600 input conditioner See www.perdrix.co.uk for more details Regards, David Partridge -Original Message- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of Richard W. Solomon

Re: [time-nuts] HP E1938A EFC slope

2011-03-11 Thread David C. Partridge
seems to have alluded me. I think you meant eluded ... Cheers Dave ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.

Re: [time-nuts] Low noise power supply

2011-03-09 Thread David C. Partridge
H I wasn't impressed. The 'scope screen shot of noise levels on the outputs used 20mV/division, and the thickness of the regulated traces told us precisely nothing. Now if the author had measured 20uV noise over a BW of 10Hz to 100kHz (about 63nV/rtHz), or 3uV over the same BW (about

Re: [time-nuts] Partridge Divider Board

2011-03-01 Thread David C. Partridge
Carslisle Interconnect Technologies (new name for Tensolite) were clear in an email to me that even though their current RF connector catalogue has two pages on the Peltola: Unfortunately we've chosen to obsolete this product line and no longer offer it. Regards, David Partridge

Re: [time-nuts] Partridge Divider Board and 10 MHz DistributionAmplifier Enclosure -- an Idea

2011-02-28 Thread David C. Partridge
Peak worst case (all outputs shorted) current draw for the divider board is 400mA, 320mA on average. HTH, David Partridge -Original Message- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of brucekar...@aol.com Sent: 28 February 2011 01:36 To:

Re: [time-nuts] Partridge Divider Board

2011-02-28 Thread David C. Partridge
eBay (in this case) is your friend - lots of suitable SMA and SMB vertical or RA connectors easily found. I recently bought 60 SMB PCB mount verticals for GBP10 I then used RA SMB connectors to go to an external panel mount BNC. You should be able to find RA SMA PCB mount sockets (jacks) that

Re: [time-nuts] PN sequence generation using GPS

2011-02-25 Thread David C. Partridge
If you want RF sewer - look at ethernet over power (e.g. Devolo) - it's horrid. Regards, David Partridge ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the

[time-nuts] Paging a couple of people

2011-02-06 Thread David C. Partridge
Please could Hadley Allhands, and Robert Darlington please check their mail (including spam folders) for mail from paypal.co.uk and from me. Regards, David Partridge ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to

Re: [time-nuts] Possibly OT: Frequency Divider boards for sale

2011-02-03 Thread David C. Partridge
The documentation in http://www.perdrix.co.uk/FrequencyDivider/Frequency%20Divider%202.1.pdf has just been updated (again) with a new section on test results and choice of power supply Regards, David Partridge -Original Message- From: David C. Partridge [mailto:david.partri

[time-nuts] Possibly OT: Frequency Divider boards for sale

2011-02-02 Thread David C. Partridge
I have just shipped out a large batch of the updated version of my frequency divider boards. I have about 20 complete boards (with all components fitted except RF connectors) available for sale. The cost for these is GBP70 each including Signed For delivery to anywhere on the planet (GBP65

Re: [time-nuts] Possibly OT: Frequency Divider boards for sale

2011-02-02 Thread David C. Partridge
The documentation in http://www.perdrix.co.uk/FrequencyDivider/Frequency%20Divider%202.1.pdf has just been updated. Regards, David Partridge -Original Message- From: David C. Partridge [mailto:david.partri...@perdrix.co.uk] Sent: 02 February 2011 14:08 To: 'teksco

Re: [time-nuts] Possibly OT: Frequency Divider boards for sale

2011-02-02 Thread David C. Partridge
And again - capacitors are not C0G, I was getting my wires crossed with another project. Regards, David Partridge -Original Message- From: David C. Partridge [mailto:david.partri...@perdrix.co.uk] Sent: 02 February 2011 17:16 To: 'teksco...@yahoogroups.com'; 'tekscop

Re: [time-nuts] Completely OT: Removing electrolytics of leakingcapacitors from a pcb

2011-01-19 Thread David C. Partridge
Dishwasher and Calgon - Bob Pease reckons it works a treat to remove polar contaminants. Dave -Original Message- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of Ulrich Bangert Sent: 19 January 2011 14:03 To: Time nuts Subject: [time-nuts] Completely OT:

Re: [time-nuts] Completely OT: Removing electrolytics ofleakingcapacitors from a pcb

2011-01-19 Thread David C. Partridge
Unless of course the culprit is a leaking wet tantalum, in which case it is sulphuric acid! Regards, David Partridge -Original Message- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of Alan Melia Sent: 19 January 2011 14:36 To: Discussion of precise

Re: [time-nuts] Frequency counter recommendation

2010-12-17 Thread David C. Partridge
If your spend is in that sort of region it doesn't cost a great deal more to get a batch of boards professionally pasted, picked, placed and reflowed. Regards, David Partridge -Original Message- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of Bob

Re: [time-nuts] Cheap distribution amplifier

2010-12-02 Thread David C. Partridge
But what's the concern about stuff being shipped OUT of the USA? Homeland Security surely doesn't care? This is really getting silly - the loonies have taken over at the asylum. Dave -Original Message- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of

[time-nuts] OT: Frequency Divider boards - taking deposits now.

2010-11-28 Thread David C. Partridge
Of the 72 people who originally signed up, I have received deposits from 43 for a total of 58 boards. Two people have explicitly dropped out, and two that I know of only want bare boards, and unfortunately I've received no reply from 25. I've got enough deposits in to allow me to place the

[time-nuts] OT: Wanted Coto reed realy part number 7002-5086

2010-11-08 Thread David C. Partridge
I'm looking for the subject reed relay to fix a Solartron 7150Plus DMM. Please contact me off list if you can help - I will post again if I get a result. Thanks Dave ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to

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

2010-10-28 Thread David C. Partridge
Dark Star Dave -Original Message- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of d.sei...@comcast.net Sent: 28 October 2010 10:13 To: Discussion of precise time and frequency measurement Subject: Re: [time-nuts] Time of death-Again Wasn't there a

Re: [time-nuts] Maintaining boatanchors (was Capacitor Failures)

2010-10-24 Thread David C. Partridge
Or it's just been lost between the cracks in reality ... Regards, David Partridge -Original Message- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of Bob Camp Sent: 23 October 2010 21:59 To: Discussion of precise time and frequency measurement

Re: [time-nuts] Maintaining boatanchors

2010-10-24 Thread David C. Partridge
Oh how true - an organisation I worked for some years back had the source code matching a custom package that was running at a certain customer, but not the build environment (that machine with that precise operating system patch level, compiler patch level etc.). When the customer said

Re: [time-nuts] Maintaining boatanchors (was Capacitor Failures)

2010-10-23 Thread David C. Partridge
What I do is to remove the EPROMS, take images of them to disk and then re-burn them. If they aren't socketed, I add turned pin sockets after removing them. The ones that worry me aren't so much the EPROMS, but the programmable MCUs with on board memory that are no longer available, and are one

Re: [time-nuts] Maintaining boatanchors (was Capacitor Failures)

2010-10-23 Thread David C. Partridge
http://www.ko4bb.com/ Regards, David Partridge -Original Message- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of David Smith Sent: 23 October 2010 03:26 To: Discussion of precise time and frequency measurement Subject: Re: [time-nuts] Maintaining

Re: [time-nuts] New (refurbished) LPRO-101 GPSDO

2010-10-17 Thread David C. Partridge
Also Regards, David Partridge -Original Message- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of Bob Camp Sent: 17 October 2010 16:09 To: Discussion of precise time and frequency measurement Subject: Re: [time-nuts] New (refurbished) LPRO-101 GPSDO

[time-nuts] Febo.com SSL certificate expired

2010-10-15 Thread David C. Partridge
Subject says all Dave ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.

[time-nuts] HP 5090B

2010-10-14 Thread David C. Partridge
OK, I just got one of these as part of a lot of other test gear. What is it for? I found nothing searching the archive, and Google didn't help much either. The Agilent site disclaimed all knowledge! I suspect it MIGHT be an off air frequency standard as it has 1MHz and 100kHz outputs and an

[time-nuts] OT: Wanted - Racal 1992 or 1998 Custom IC.

2010-09-17 Thread David C. Partridge
I'm looking for a custom IC used in the Racal 1991/2 and 1998/9 counters. Amongst other things it is used to generate the CPU clock. I know it's dead as I've tested it by sticking it into a known good counter. In the 1992 it is IC18 and in the 1998 it is IC9 and in either case the Racal

Re: [time-nuts] Timing Distribution in Mountainous Terrain

2010-09-10 Thread David C. Partridge
Jim is it possible you just gave a workable solution: Equip each site with a small radio telescope and watch pulsars. Aren't pulsars a reliable accurate time source or do they not provide the 30nS over ten days accuracy? Regards, David Partridge -Original Message- From:

[time-nuts] Possibly OT: Maintenance manual for Racal 1998 and 1999 now available for download

2010-09-08 Thread David C. Partridge
I just received an email from EADS (used to be Racal Instruments): Dear David, The 1998/9 Maintenance Manual has now been scanned and is available for download from our web-site. Please use the link below to access the downloads page.

Re: [time-nuts] Anyone have a comparison of the Z3805A and a Tbolt?

2010-09-07 Thread David C. Partridge
I'm having a problem with a sentence that contains bad and 10811 in proximity. It sounds like an oxymoron. Please could someone elaborate on why a 10811 OCXO in a 3805 is bad? Regards, David Partridge -Original Message- From: time-nuts-boun...@febo.com

Re: [time-nuts] Maintenance manual for Racal 1998 and 1999 universal counter timers

2010-09-06 Thread David C. Partridge
That is only the user manual I fear Regards, David Partridge -Original Message- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of Charles P. Steinmetz Sent: 06 September 2010 04:58 To: Discussion of precise time and frequency measurement Subject: Re:

[time-nuts] Maintenance manual for Racal 1998 and 1999 universal counter timers

2010-09-05 Thread David C. Partridge
I'm looking for this - has any one found a copy in the wild? Thanks, David Partridge ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.

Re: [time-nuts] Better GPS

2010-08-28 Thread David C. Partridge
I thought it had broken off (San Andreas Fault) ... Dave -Original Message- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of Bill Hawkins Sent: 27 August 2010 20:59 To: 'Discussion of precise time and frequency measurement' Subject: Re: [time-nuts] Better

Re: [time-nuts] HP 5335A and HP-IB (GP-IB)

2010-08-02 Thread David C. Partridge
At long last, an outbreak of sanity in an insane world. Regards, David Partridge -Original Message- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of Poul-Henning Kamp Sent: 02 August 2010 09:40 To: Discussion of precise time and frequency measurement

Re: [time-nuts] Basic question regarding comparing two frequencies

2010-07-25 Thread David C. Partridge
Jim, It might appear on the 2nd user market sooner, but the odds are you won't be able to either repair it or calibrate it as the manufacturer will have been the only supplier of either of these services, and no service manuals will exist. If it is still in support, the mfr will calibrate/fix

Re: [time-nuts] Reference source 1E10^8 only ...Ideas

2010-07-24 Thread David C. Partridge
Don, Go to fluke.l (that's a lower case l at the end) seller on eBay, and buy a Thunderbolt GPS controlled oscillator. You should have fully adequate satellite coverage at 45 or 50 degrees South PS Once I get the parts through I'll have a divider board available. Cheers Dave -Original

Re: [time-nuts] Datum TS-2100 Rubidium

2010-07-21 Thread David C. Partridge
but the LPRO isn't designed (well, according to the spec) for GND != -VE So long as you don't introduce it to real ground (i.e. isolate it), it won't know that the -12V is floating below world ground :-) Dave ___ time-nuts mailing list --

[time-nuts] Frequency Divider Board Status

2010-07-21 Thread David C. Partridge
An udpate for everyone, I am STILL waiting for Stackpole Electronics thin film resistors which I ordered through Digikey. I have kicked Stackpole, but current delivery date promised is mid August. Regards, David Partridge ___ time-nuts mailing

Re: [time-nuts] Datum TS-2100 Rubidium

2010-07-21 Thread David C. Partridge
Danielson Sent: 21 July 2010 10:52 AM To: Discussion of precise time and frequency measurement Subject: Re: [time-nuts] Datum TS-2100 Rubidium On 07/21/2010 10:11 AM, David C. Partridge wrote: but the LPRO isn't designed (well, according to the spec) for GND != -VE So long as you don't introduce

Re: [time-nuts] rapid startup GPSDO

2010-07-14 Thread David C. Partridge
After a forced cold start in an unknown location, the TB will still be searching for satellites after five minutes. If you move it and don't clear the incorrect location, I don't know how long it will take to realise it is wrong (if it ever does). Dave -Original Message- From:

Re: [time-nuts] Long period variation of GPS PPS timing?

2010-07-02 Thread David C. Partridge
Is this a timing GPS receiver, or a generic fast start navigation receiver? 25 seconds to start from power on sounds rather short for a timing receiver. The T-bolt start up from cold takes about 15 minutes for the crystal oven to warm, then the self survey is run which by default is 2000

Re: [time-nuts] Long period variation of GPS PPS timing?

2010-07-01 Thread David C. Partridge
Sawtooth variation in pps time - that does sound a bit familiar in reference to GPS timing. e.g.: http://www.leapsecond.com/pages/m12/sawtooth.htm but that's over a MUCH shorter time scale than you report which seems to a around 3000 seconds. So I wouldn't write it off as being unrelated to

Re: [time-nuts] Best OCXOs, phasenoise wise.

2010-06-28 Thread David C. Partridge
And the price will make your eyes water!! Dave P. -Original Message- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of John Miles Sent: 28 June 2010 15:33 To: Discussion of precise time and frequency measurement Subject: Re: [time-nuts] Best OCXOs,

Re: [time-nuts] Comments on Tbolt deal - Fluke.L

2010-06-05 Thread David C. Partridge
Did you send the failed Tbolt back to tvb? ISTR that he expressed an interest in getting failed TAPR units back so that he could investigate why they failed. Dave -Original Message- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of Mike Naruta AA8K

Re: [time-nuts] EZGPIB writing to a file - disk thrashing

2010-05-17 Thread David C. Partridge
1) In the scale of things 1 write/second is not thrashing. 100/sec might be classified that way. 2) The C run-time with buffer the data anyway. So don't worry. Dave -Original Message- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of Jerome Peters

[time-nuts] OT: For the attention of Bill Mason

2010-05-15 Thread David C. Partridge
mail for pha...@wcc.net from me is STILL being blocked. David Partridge ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.

Re: [time-nuts] And you thought you were old

2010-04-21 Thread David C. Partridge
I think I still have a few OC71 xistors Dave Partridge ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.

Re: [time-nuts] GPS SVN-49 and some GLONASS news

2010-04-01 Thread David C. Partridge
Buyer collects - sold as-is, where is :-) Regards, David Partridge Email:david.partri...@perdrix.co.uk -Original Message- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of Bob Camp Sent: 01 April 2010 17:28 To: Discussion of precise time and frequency

[time-nuts] Bill Mason

2010-03-30 Thread David C. Partridge
Message for Bill Mason. Apologies yet again for using list bandwidth on this. I have now tried all your email addresses on several oaccasions. I have sent your ISP technical support the following through their web support page: Your mail servers are rejecting all mail I try to send Bill Mason

Re: [time-nuts] Low cost 6+ GHz Prescaler

2010-03-27 Thread David C. Partridge
What sort of inductance? For a 68nH part in 0603 size I struggled to find one with an SRF of 2700MHz, let alone above 8GHz. Regards, David Partridge -Original Message- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of Samuel DEMEULEMEESTER Sent: 27

Re: [time-nuts] GPS antenna splitters

2010-03-26 Thread David C. Partridge
Now you couldn't possibly be referring to Bruce Griffiths could you? :-) Cheers Dave -Original Message- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of Tom Holmes, N8ZM Sent: 26 March 2010 21:12 To: 'Discussion of precise time and frequency

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