Re: [time-nuts] Question about precise frequency / phase measurement

2012-04-20 Thread ws at Yahoo
No page. The effect is nothing very special. No relativity. Mostly just the effect of the oscillator's "G" sensitivity caused by tilting and acceleration as it swings. What is generally measured with a 2 G static turn over test. The thing about the test is that it gives a signal that is very ha

Re: [time-nuts] Question about precise frequency / phase measurement

2012-04-20 Thread Jim Hickstein
On 2012/04/20 13:44, time-nuts-requ...@febo.com wrote: For a high end example showing external influences causing small freq variation, see the swinging OSC test at http://www.thegleam.com/ke5fx/tpll/swing.gif Neat! Is there a page explaining a bit more about it? I was summarizing the Hafel

Re: [time-nuts] parking lot location

2012-04-20 Thread Robert Darlington
Oh gosh. Sorry guys. I have a nickname of "me" for when I want to email myself. Sometimes it matches on the first two letters of measurement and matches this list.This is the first time (that I know of) that I didn't catch it. -Bob On Fri, Apr 20, 2012 at 4:10 PM, J. Forster wrote: > Oh,

Re: [time-nuts] parking lot location (was2 (Spoofing))

2012-04-20 Thread Javier Herrero
No, there are a lot more messages from him since at least 2008 and last one in the chinese scopes thread some days ago. The e-mail origin seems quite authentic from the headers, so I suspect he has sent it to the list in error :) Rgds, Javier El 21/04/2012 00:50, Bill Hawkins escribió: [Par

Re: [time-nuts] parking lot location (was2 (Spoofing))

2012-04-20 Thread Bill Hawkins
[Parking lot location details deleted] While clearly not spam, the only other time Mr. Darlington's name appears in this group in the 12,459 low noise messages since 12/31/2010 was the following: -Original Message- From: Robert Darlington Sent: Tuesday, October 04, 2011 4:07 PM To: j...@q

[time-nuts] [Fwd: Re: WWVB test]

2012-04-20 Thread J. Forster
Original Message Subject: Re: WWVB test From:"John Lowe" Date:Fri, April 20, 2012 3:18 pm To: "John Lowe" Cc: "Lowe, John P" -- *_ATTENTION_*** *

[time-nuts] Manual for HP K79-59992A Mixer/IF Amplifier

2012-04-20 Thread NE8S ' DOC '
Greetings my fellow 'Keepers of Atomic Time', It's been a while but I've been so busy, that I need more than 15 Cesium Beam Atomic Time and Frequency Standards to keep track of my time (and frequency for that matter). I am seeking anyone who may have a copy or an original copy that could make a

Re: [time-nuts] parking lot location

2012-04-20 Thread J. Forster
Oh, thank you. I needed a new car. :) -John = > Ur car is in row n spot 14e at airport parking. Gave keys to driver > Tom c. They're in envelope at front. > > ___ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to > ht

[time-nuts] parking lot location

2012-04-20 Thread Robert Darlington
Ur car is in row n spot 14e at airport parking. Gave keys to driver Tom c. They're in envelope at front. ___ 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 instruc

Re: [time-nuts] Question about precise frequency / phase measurement

2012-04-20 Thread WarrenS
Wolfgang asked >Does anybody know a possibility to get a resolution < 1 mHz ? (in 1 second) > The goal is look for frequency deviations caused by external influences ... A silly question to ask time nuts. :) How good do you really want it to be? 1 mHz out of 10 MHz in one second is only 1 part in

Re: [time-nuts] Question about precise frequency / phase measurement

2012-04-20 Thread EWKehren
Ed at one time I used two 9 GHz multiplier chains out of FTS 4000's mixed them, if you are interested contact me off list I may still have them. Have thrown out many things because I am downsizing in preparation for a move. Bert In a message dated 4/20/2012 11:37:16 A.M. Eastern Daylight

Re: [time-nuts] Question about precise frequency / phase measurement

2012-04-20 Thread EWKehren
I have and use a Tracor 527E how ever the Austron circuit including counter is a PCB board 2.2 X 2.5 inches and I have not seen a Tracor for $ 50. I think I paid $ 800 fifteen years ago. Bert Kehren In a message dated 4/20/2012 11:37:16 A.M. Eastern Daylight Time, e...@telight.com writes

Re: [time-nuts] Question about precise frequency / phase measurement

2012-04-20 Thread ed breya
You may want to look at how that was done many years ago with frequency difference multiplication as in the old Tracor meters - I think the 528 was the main one. They synthesized a 9 MHz reference from one input, and then subtracted it from the other to get a 1 MHz result, which was used as a r

Re: [time-nuts] Advice on Synergy M12+ adapter and SYMTRIK SYM-RFT-XX.

2012-04-20 Thread Andrew Back
Hi Chris, On 19 April 2012 19:54, Chris Albertson wrote: > Here is what you need to do... > > 1) Get NTP working on the Linux system using Internet peers as the > reference clock.  Use "pool servers".   This is very easy to do and don't > skip this step.  It verifies NTP works and you will need

Re: [time-nuts] Question about precise frequency / phase measurement

2012-04-20 Thread EWKehren
It is a circuit that they for instance use in the 2110 where they take the reference input in case of 10 MHz divide by 2 and also divide the 5 MHz down to 500 Hz use an exor and out comes 5.000500 MHz filtered and divided by 5. The result is 1.000100 MHz which is mixed with the unknown divide

Re: [time-nuts] Question about precise frequency / phase measurement

2012-04-20 Thread Bruce Griffiths
Attila Kinali wrote: On Thu, 19 Apr 2012 23:39:32 +0200 skywatcher wrote: BTW i'm using the Parallax 'Propeller' controller which has 8 cores running at 80 MHz each, and can measure time intervals with 12.5 ns resolution. [...] Looks like an interesting thing. But also very specia

Re: [time-nuts] Question about precise frequency / phase measurement

2012-04-20 Thread Attila Kinali
On Thu, 19 Apr 2012 23:39:32 +0200 skywatcher wrote: > BTW i'm using the > Parallax 'Propeller' controller > which has 8 cores running at 80 MHz each, and can measure time intervals > with 12.5 ns resolution. [...] Looks like an interesting thing. But also very specialized. If you have alread

Re: [time-nuts] Question about precise frequency / phase measurement

2012-04-20 Thread Attila Kinali
Moin On Thu, 19 Apr 2012 18:18:24 -0400 (EDT) ewkeh...@aol.com wrote: > I have quite a collection of equipment and have build Dual Mixer, PICTIC > and what I think is best for you a circuit I call the Austron circuit. What is this "Austron Circuit"? And how does it look like? :-)