Re: [time-nuts] Interesting frequency standard project

2014-07-05 Thread Dale H. Cook
At 06:27 PM 7/4/2014, Hal Murray wrote: ... we have no requirement for that level of stability on the MW broadcasts. How stable are they? That varies greatly from station to station depending upon what transmitter they are running. Note also that compliance with the 20 Hz accuracy requirement

Re: [time-nuts] Interesting frequency standard project

2014-07-05 Thread Al Wolfe
From: Dale H. Cook starc...@plymouthcolony.net To: time-nuts@febo.com Subject: Re: [time-nuts] Interesting frequency standard project At 06:27 PM 7/4/2014, Hal Murray wrote: ... we have no requirement for that level of stability on the MW broadcasts. How stable are they? That varies greatly

Re: [time-nuts] Interesting frequency standard project

2014-07-05 Thread EWKehren
: Re: [time-nuts] Interesting frequency standard project At 06:27 PM 7/4/2014, Hal Murray wrote: ... we have no requirement for that level of stability on the MW broadcasts. How stable are they? That varies greatly from station to station depending upon what transmitter they are running

[time-nuts] Interesting frequency standard project

2014-07-04 Thread Collins, Graham
I am sure there are others on list who follow Elektor Magazine and even perhaps their forums but there are likely many that do not. I stumbled across this interesting frequency standard project and thought others might also be interested:

Re: [time-nuts] Interesting frequency standard project

2014-07-04 Thread paul swed
An interesting article much like one Bert sent me circa 1989 quite recently. The key to these systems is that the transmitters have very good references. In the US at least we have no requirement for that level of stability on the MW broadcasts. Though evidently some stations are quite good. I

Re: [time-nuts] Interesting frequency standard project

2014-07-04 Thread Hal Murray
paulsw...@gmail.com said: The key to these systems is that the transmitters have very good references. In the US at least we have no requirement for that level of stability on the MW broadcasts. Though evidently some stations are quite good. I think I have a list some place have to re-look.

Re: [time-nuts] Interesting frequency standard project

2014-07-04 Thread Graham
You have to log in to see all the files for the project. I am not a member so I couldn't log in. Seems it is a pay to be a member sort of thing but joining as a member gets you a subscription too. Interesting business model. I have been a fan of Elektor for as long as I can remember and I

Re: [time-nuts] Interesting frequency standard project

2014-07-04 Thread Alexander Pummer
there was an article in the January 2012issue of the elektor DCF77 locked reference, the DCF77 has very similar modulation format as the new modultion format of the WWVB 73 KJ6UHN Alex On 7/4/2014 2:21 PM, paul swed wrote: An interesting article much like one Bert sent me circa 1989 quite

Re: [time-nuts] Interesting frequency standard project

2014-07-04 Thread Alexander Pummer
for an AM station is strait forward at first use a narrow filter to make sure that you have just one station and feed the filter out put into a limiter the output of the limiter will be the carrier. 73 KJ6UHN Alex On 7/4/2014 3:27 PM, Hal Murray wrote: paulsw...@gmail.com said: The key to

Re: [time-nuts] Interesting frequency standard project

2014-07-04 Thread Brian Lloyd
On Fri, Jul 4, 2014 at 5:27 PM, Hal Murray hmur...@megapathdsl.net wrote: paulsw...@gmail.com said: The key to these systems is that the transmitters have very good references. In the US at least we have no requirement for that level of stability on the MW broadcasts. Though evidently

Re: [time-nuts] Interesting frequency standard project

2014-07-04 Thread Robert LaJeunesse
To: Discussion of precise time and frequency measurement time-nuts@febo.com Sent: Friday, July 4, 2014 6:35 PM Subject: Re: [time-nuts] Interesting frequency standard project there was an article in the January 2012issue of the elektor DCF77 locked reference, the DCF77 has very similar modulation

Re: [time-nuts] Interesting frequency standard project

2014-07-04 Thread Max Robinson
- Original Message - From: Alexander Pummer alex...@ieee.org To: Discussion of precise time and frequency measurement time-nuts@febo.com Sent: Friday, July 04, 2014 5:59 PM Subject: Re: [time-nuts] Interesting frequency standard project for an AM station is strait forward at first use

Re: [time-nuts] Interesting frequency standard project

2014-07-04 Thread Max Robinson
rlajeune...@sbcglobal.net To: Discussion of precise time and frequency measurement time-nuts@febo.com Sent: Friday, July 04, 2014 7:53 PM Subject: Re: [time-nuts] Interesting frequency standard project Details of the DCF77 project, including source code, can be seen without an Elektor subscription

Re: [time-nuts] Interesting frequency standard project

2014-07-04 Thread Max Robinson
Pummer alex...@ieee.org To: Discussion of precise time and frequency measurement time-nuts@febo.com Sent: Friday, July 4, 2014 6:35 PM Subject: Re: [time-nuts] Interesting frequency standard project there was an article in the January 2012issue of the elektor DCF77 locked reference, the DCF77

Re: [time-nuts] Interesting frequency standard project

2014-07-04 Thread Arnold Tibus
: Alexander Pummer alex...@ieee.org To: Discussion of precise time and frequency measurement time-nuts@febo.com Sent: Friday, July 4, 2014 6:35 PM Subject: Re: [time-nuts] Interesting frequency standard project there was an article in the January 2012issue of the elektor DCF77 locked