Re: [time-nuts] Home built cesium clocks???

Bruce, I need a primary standard, and hydrogen maser is not defined as such. I am working at the University of Split, Croatia, and I want to apply for Croatia's reference time and frequency reference laboratory. At the moment that status is unassigned, because noone in the whole country

Re: [time-nuts] Home built cesium clocks???

Predrag Dukic wrote: Bruce, I need a primary standard, and hydrogen maser is not defined as such. I am working at the University of Split, Croatia, and I want to apply for Croatia's reference time and frequency reference laboratory. At the moment that status is unassigned, because noone

Re: [time-nuts] Home built cesium clocks???

Bruce, I did my homework and collected everything from the internet I could get. I have this one too. If I go optical way, I still need 9+GHz electrical source, so I will first recreate electronics. Using off the shelf DDS chips, or using FPGA. Also I need 9 GHz AOM, so that I can split

Re: [time-nuts] Home built cesium clocks???

In message [EMAIL PROTECTED], Predrag Dukic writes: Bruce, I did my homework and collected everything from the internet I could get. I have this one too. If I go optical way, I still need 9+GHz electrical source, so I will first recreate electronics. Using off the shelf DDS chips, or using

Re: [time-nuts] Home built cesium clocks???

Poul, That is the reason I wanted FE5440A First of all it is a military device. CBTs are replaced before expiring their operating life so that F18 (or any, i don't know the details) do not loose communication in mid air. All of FE5440a ebay tubes still have some cesium left. Then, early

Re: [time-nuts] Home built cesium clocks???

Predrag Dukic wrote: Bruce, I did my homework and collected everything from the internet I could get. I have this one too. If I go optical way, I still need 9+GHz electrical source, so I will first recreate electronics. Using off the shelf DDS chips, or using FPGA. Also I need 9 GHz

Re: [time-nuts] Home built cesium clocks???

From: Predrag Dukic [EMAIL PROTECTED] Subject: Re: [time-nuts] Home built cesium clocks??? Date: Sun, 29 Jun 2008 12:10:46 +0200 Message-ID: [EMAIL PROTECTED] Bruce, I did my homework and collected everything from the internet I could get. I have this one too. If I go optical way, I

Re: [time-nuts] Home built cesium clocks???

Magnus Danielson wrote: From: Predrag Dukic [EMAIL PROTECTED] Subject: Re: [time-nuts] Home built cesium clocks??? Date: Sun, 29 Jun 2008 12:10:46 +0200 Message-ID: [EMAIL PROTECTED] Bruce, I did my homework and collected everything from the internet I could get. I have this one

Re: [time-nuts] Home built cesium clocks???

One design for a tunable Littrow ECDL built using catalog parts plus a little machining is: http://optics.ph.unimelb.edu.au/atomopt/publications/littrow_rsi_vol72_p4477_2001.pdf Bruce ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe,

Re: [time-nuts] Home built cesium clocks???

Bruce, Thank You for the links. The first one is out of my reach. Also I need some time to digest their complex optical scheme and get a grasp of what is happening there. The second one is more interesting. I have gratings, piezo stacks, and access to Universitie's machine shop. I only

[time-nuts] Home built Ammonia cell std !! / Home built cesium clocks???

We dont get much info/comments about this But what would an ammonia cell standard be able to do. I mean frequency/time wise. Maybe easier and simpler ? comments ? Luis Cupido. ct1dmk. (I understand the frequencies are much higher but that is not a problem, at least for me).

Re: [time-nuts] Home built cesium clocks???

From: Bruce Griffiths [EMAIL PROTECTED] Subject: Re: [time-nuts] Home built cesium clocks??? Date: Mon, 30 Jun 2008 01:46:54 +1200 Message-ID: [EMAIL PROTECTED] One design for a tunable Littrow ECDL built using catalog parts plus a little machining is:

Re: [time-nuts] Home built Ammonia cell std !! / Home built cesiumclocks???

Now that is something I am interested in doing. I finally secured use of a diffusion pump at a local university and expect to be making my first sealed all-glass absorption cells this fall. The ammonia pressure needs to be around 8-10 microns. I will be trying for a double pass cell giving a

[time-nuts] Datum 9390

Do anybody have a manual for the Datum GPS synchronized Generator. 9390-53111. ?? Or a manual for a model close to this? Or know where I can find one? Jack Sandum Norway [EMAIL PROTECTED] ___ time-nuts mailing list -- time-nuts@febo.com To

Re: [time-nuts] Home built Ammonia cell std !! / Home built cesiumclocks???

From: John Franke [EMAIL PROTECTED] Subject: Re: [time-nuts] Home built Ammonia cell std !! / Home built cesiumclocks??? Date: Sun, 29 Jun 2008 12:20:28 -0400 Message-ID: [EMAIL PROTECTED] Now that is something I am interested in doing. I finally secured use of a diffusion pump at a local

Re: [time-nuts] Datum 9390

In a message dated 29/06/2008 18:18:17 GMT Daylight Time, [EMAIL PROTECTED] writes: Do anybody have a manual for the Datum GPS synchronized Generator. 9390-53111. ?? Or a manual for a model close to this? Or know where I can find one? - Hi Jack I've got the manual for

Re: [time-nuts] Home built Ammonia cell std !! / Home built cesiumclocks???

No, I am talking about the 1948 gas absorption design by Lyons, not the ammonia MASER. There is no state-selection. There is no flowing gas molecules. There is no quadrapole device. It is a simple oscillator locked to the attenuation dip in an absorption cell. Once built, there is no gas

Re: [time-nuts] Home built Ammonia cell std !! / Home built cesiumclocks???

From: John Franke [EMAIL PROTECTED] Subject: Re: [time-nuts] Home built Ammonia cell std !! / Home built cesiumclocks??? Date: Sun, 29 Jun 2008 14:02:06 -0400 Message-ID: [EMAIL PROTECTED] No, I am talking about the 1948 gas absorption design by Lyons, not the ammonia MASER. There is no

Re: [time-nuts] Datum 9390

Hallo Nigel If you could send the file. 3M is ok by me. Look forward to the manual, hope it is close to my HW. Jack [EMAIL PROTECTED] -Opprinnelig melding- Fra: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] På vegne av [EMAIL PROTECTED] Sendt: 29. juni 2008 19:40 Til: time-nuts@febo.com

Re: [time-nuts] Datum 9390

Nigel -- Can you send it to the upload page at http://www.ko4bb.com/cgi-bin/upload.pl (user 'manuals', password 'manuals', without the quotes)? I could use that one myself... -- john, KE5FX - Hi Jack I've got the manual for the 9390-52054, don't know how similar it is but

Re: [time-nuts] Home built cesium clocks???

Date: Sun, 29 Jun 2008 14:49:13 +0200 To: Magnus Danielson [EMAIL PROTECTED] From: Predrag Dukic [EMAIL PROTECTED] Subject: Re: [time-nuts] Home built cesium clocks??? Magnus, Bruce, One of the requirements for applying for a reference laboratory in Croatia is also to show scientific

Re: [time-nuts] Home built cesium clocks???

Date: Sun, 29 Jun 2008 20:46:32 +0200 To: Magnus Danielson [EMAIL PROTECTED] From: Predrag Dukic [EMAIL PROTECTED] Subject: Re: [time-nuts] Home built cesium clocks??? Magnus, Sure, I will need a lot of help. But the project will have to be long-term. I also have a job, and can spare

Re: [time-nuts] Datum 9390

In a message dated 29/06/2008 19:34:20 GMT Daylight Time, [EMAIL PROTECTED] writes: Can you send it to the upload page at http://www.ko4bb.com/cgi-bin/upload.pl (user 'manuals', password 'manuals', without the quotes)? I could use that one myself... - Hi John, and all

Re: [time-nuts] Datum 9390

Back again, I've uploaded the 9390 mamual to Didier's site, or at least the upload log says I have, but it's not appearing in the recently uploaded files and I see it can't be downloaded directly from there anyway. I'll leave that one to Didier to sort out but, in the meantime will send to

Re: [time-nuts] time-nuts Digest, Vol 47, Issue 72

- Original Message - From: [EMAIL PROTECTED] To: time-nuts@febo.com Sent: Sunday, June 29, 2008 2:59 PM Subject: time-nuts Digest, Vol 47, Issue 72 Send time-nuts mailing list submissions to time-nuts@febo.com To subscribe or unsubscribe via the World Wide Web, visit

[time-nuts] Use of Austron 2100F Phase Corrected Output

Hi all, I believe I read that it was a mistake to use the Phase Corrected Output 10 MHz signal from the 2100F as the time base source for other equipment? Something about the corrections being in steps. Has anyone else had any experience with this? If so, what is the problem with the

Re: [time-nuts] Datum 9390

The 9390 manual is in the GPS_Timing directory. Considering Nigel's comment below, I have made a couple of changes to the upload script and the manuals page so that any upload (via script of via ftp) will show up in the Recent Upload directory. However, whatever is uploaded via ftp will not show