AW: [time-nuts] FTS 4060 Op Manual

2005-04-25 Thread Hubert v. Bonhorst
Does anyone have diagrams for the cesium module? Hubert DB7ME -Ursprüngliche Nachricht- Von: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Im Auftrag von Had Gesendet: Montag, 25. April 2005 19:24 An: time-nuts-febo.com Betreff: [time-nuts] FTS 4060 Op Manual Quick note to my fellow "nuts"

AW: [time-nuts] HP 10811A vs 10811-60111

2005-04-23 Thread Hubert v. Bonhorst
Sorry for page flipped. Attached pdf is for 10811-60111 Best regards Hubert DB7ME -Ursprüngliche Nachricht- Von: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Im Auftrag von David Kirkby Gesendet: Samstag, 23. April 2005 16:32 An: Discussion of precise time and frequency measurement Betreff:

AW: [time-nuts] Cesium DOES Drift, not

2005-04-20 Thread Hubert v. Bonhorst
Just another idea Might be the Cs tube is just going to stabilize its magnetic field. Is there any possibility to degauss the tube, like with the 5061 high performance tube? This could be a very small drift/day. Hubert DB7ME -Ursprüngliche Nachricht- Von: [EMAIL PROTECTED] [mailto:[EMAIL

AW: [time-nuts] homebrew atomic reference oscillator?

2005-04-18 Thread Hubert v. Bonhorst
Bob, Probably it is possible to build an atomic frequency reference at home. First of all you have to decide which type of atomic standard you desire to construct. Cs, Rb, H2, NH3, etc. active or passive and so on. Now theoretical construction starts. Afterwards you have to find sources for all the

AW: [time-nuts] 5061 Cs frequency shift with long time constant?

2005-04-06 Thread Hubert v. Bonhorst
John, I had a look in the February 1973 5061A manual (serial prefix 1248). There is a small note on Figure 8-5 wiring diagram stating different frequency offsets R6 OPTION 004, 12 M 2E-12, 10M 2 to 3E-12 5M 3 to 4E-12 If you need a scan of this page, let me know. Best regards Hubert -Ursp

AW: [time-nuts] 5061 Cs frequency shift with long time constant?

2005-04-05 Thread Hubert v. Bonhorst
there is some leak-current or offset in the integrating amplifier. Suspect the amplifier itself as well. Try to do the integrating amplifier adjustment procedure. Eventually modulator phase needs a little bit adjustment. Be aware that a instrument connected to control output could cause a similar e

AW: AW: [time-nuts] Strange effect with C-Field change -- and a bitofdata

2005-03-28 Thread Hubert v. Bonhorst
Hi John, How did you know the correct value for oven temperature? etc. Regards Hubert -Ursprüngliche Nachricht- Von: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Im Auftrag von John Ackermann N8UR Gesendet: Sonntag, 27. März 2005 20:57 An: Discussion of precise time and frequency measuremen

AW: [time-nuts] Strange effect with C-Field change -- and a bit ofdata

2005-03-27 Thread Hubert v. Bonhorst
I'm very interested to see the instructions as well. Please help Hubert -Ursprüngliche Nachricht- Von: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Im Auftrag von John Ackermann N8UR Gesendet: Sonntag, 27. März 2005 04:17 An: time-nuts Betreff: Re: [time-nuts] Strange effect with C-Field ch

AW: [time-nuts] Strange effect with C-Field change -- and a bit ofdata

2005-03-27 Thread Hubert v. Bonhorst
Does anyone have a datasheet on 71xx FTS tubes. Any information is helpful. Thank you in advance Hubert -Ursprüngliche Nachricht- Von: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Im Auftrag von Chuck Harris Gesendet: Sonntag, 27. März 2005 15:50 An: Discussion of precise time and frequency

AW: AW: AW: [time-nuts] Strange effect with C-Field change

2005-03-24 Thread Hubert v. Bonhorst
2005 22:59 An: Discussion of precise time and frequency measurement Betreff: Re: AW: AW: [time-nuts] Strange effect with C-Field change Hubert v. Bonhorst wrote: >Hi John, > >I saw similar outliers running especially Motorola GPS receivers in the >vicinity to mobile telephones. Shie

AW: AW: [time-nuts] Strange effect with C-Field change

2005-03-24 Thread Hubert v. Bonhorst
-nuts] Strange effect with C-Field change Hubert v. Bonhorst wrote: >If you disregard this excursion, what happened after the change. Did >frequency change as expected? Would there have been continuity of data? >Which TIC do you use? Which GPS receiver do you use? How many satellites did &

AW: [time-nuts] Strange effect with C-Field change

2005-03-24 Thread Hubert v. Bonhorst
If you disregard this excursion, what happened after the change. Did frequency change as expected? Would there have been continuity of data? Which TIC do you use? Which GPS receiver do you use? How many satellites did you track? What is the minimum elevation for satellites used? I know a lot of stu