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
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
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
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:
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
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.
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
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
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
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
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
- 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
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
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
: 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
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