I know precisely what you are saying and I get the feel. Nixie clocks seem
so much cooler than seven-segment LED clocks. (And vacuum fluorescent just
seems cheesy. Go figure.) So early '60s is retro but late '60s is not. From
my view 50 years down the road that seems just ... humorous.
Brian,
At those low levels, how does one differentiate between phase or AM noise?
Thanks Regards - Mike
Mike B. Feher, EOZ Inc.
89 Arnold Blvd.
Howell, NJ, 07731
732-886-5960 office
908-902-3831 cell
-Original Message-
From: time-nuts [mailto:time-nuts-boun...@febo.com] On Behalf Of Bruce
Interestingly they use regenerative dividers.
Pretty good read.
Thanks
Paul
WB8TSL
On Tue, Jan 13, 2015 at 4:49 PM, Tom Knox act...@hotmail.com wrote:
I think the key to this concept is an optical comb filter.
Archita Hati of the Phase Noise measurement Group at NIST has been
researching
and input the same in this case?
Bob
On Jan 14, 2015, at 10:55 AM, Li Ang lll...@gmail.com wrote:
Hi
Just now, I changed the way to calculate frequency and get a better
ADEV chart.
http://www.qsl.net/b/bi7lnq/freqcntv4/test/20150114/0114.gif
http://www.qsl.net/b/bi7lnq/freqcntv4/test
Hi
More or less by definition:
AM noise has the sidebands in phase, PM noise has the sidebands out of phase.
PM adds to no envelope power, AM adds to the envelope power. If you have purely
random noise, half of the power is AM, half is PM by this approach. If you have
what is effectively a
Hi Martyn:
On each frequency there are a couple or more different codes.
The Civilian Acess (C/A) code on the L1 frequency is all public information and
so is the most commonly used.
But there are classified codes that have a much higher bit rate and allow for more accurate position, time and
Just now, I changed the way to calculate frequency and get a better
ADEV chart.
http://www.qsl.net/b/bi7lnq/freqcntv4/test/20150114/0114.gif
Looking good! Nice example of a white PM noise floor, just like a 'real' HP
counter. Let it run for a few days and see how the environmental
Hi
Just now, I changed the way to calculate frequency and get a better
ADEV chart.
http://www.qsl.net/b/bi7lnq/freqcntv4/test/20150114/0114.gif
http://www.qsl.net/b/bi7lnq/freqcntv4/test/20150114/newway.tim
http://www.qsl.net/b/bi7lnq/freqcntv4/test/20150114/oldway.tim
Thanks to John
Hello,
I have some questions on GPS and GNSS.
Do all the civilian GPS receivers only operate on the L1 frequency?
Are there any GPS frequency standards out there that use L1 and L2 and that can
be purchased by non-military customers?
I am playing with the new Lea-M8T receiver.
How do I know
I have some questions on GPS and GNSS.
Note GNSS is the generic word for any satellite based navigation system. GPS is
one of GNSS so you don't actually need to say GPS *and* GNSS.
Do all the civilian GPS receivers only operate on the L1 frequency?
No. All the cheap ones do, though.
Are
Hi Li Ang,
You're making good progress. Thanks for the update and the photos. I am
impressed with both the project and the way you are documenting and sharing the
progress on the qsl.net web site.
The new algorithm is good. Yes, the whole idea of a timestamping counter is
that you start it
Bonjour Magnus,
Many thanks for your very long and detailed answer. I've read quickly bu will
go deeper tonight.
Here are the results of today experiments... which are not giving anything
valuable... I still don't understand the results I get :-/
With the PM6654C, I've put the HP GPSDO on
On Sun, Jan 11, 2015 at 10:10 PM, Wayne Holder wayne.hol...@gmail.com
wrote:
But, 7 segment just doesn't quite capture that retro feel, IMO.
I know precisely what you are saying and I get the feel. Nixie clocks seem
so much cooler than seven-segment LED clocks. (And vacuum fluorescent just
Hi John,
I hadn't noticed before you were here as well ;-)
Thanks for answering. So I do understand I can use Timelab in frequency
difference even if my counter sends data in TI in nanoseconds. Great.
Ah and thanks for the manual link. I didn't remember this was in the manual of
the
On 01/13/2015 11:41 AM, Attila Kinali wrote:
On Mon, 12 Jan 2015 20:09:45 +
Gregory Maxwell gmaxw...@gmail.com wrote:
On Mon, Jan 12, 2015 at 12:34 PM, Attila Kinali att...@kinali.ch wrote:
Seems that the state of the art in stabilized lasers has improved a
lot lately, e.g. there are
Although the phase noise when using optical combs to generate Rf signals
is low there is no mention of the am noise.
Bruce
On Tuesday, January 13, 2015 02:49:33 PM Tom Knox wrote:
I think the key to this concept is an optical comb filter.
Archita Hati of the Phase Noise measurement Group at
Dr David Kirkby
Managing Director
Kirkby Microwave Ltd
Registered office: Stokes Hall Lodge, Burnham Rd, Chelmsford, Essex, CM3
6DT, United Kingdom
Registered in England and Wales as company number 08914892
http://www.kirkbymicrowave.co.uk/
Tel 07910 441670 / +44 7910 441670 (0900-2100 GMT)
On 13
Hello all,
I contacted the eBay seller and he sent me an exchange REF 0 module. I
swapped it in and it powered right up. Now there is a single green LED (ON)
illuminated on the REF 0 module and a single yellow led (STBY) illuminated
on the REF 1 module, so I'm pretty sure that all is well.
Bonjour Stéphane,
On 01/14/2015 02:16 AM, Stéphane Rey wrote:
Hi Magnus,
For some reason I've missed this message and the one from Jim until now ! This
answers many of the questions I had. For my defense, I've 3000 messages since
the last 3 months on the list !!!
ah, yes, I'd like to get
Hi,
On 01/13/2015 11:48 AM, Attila Kinali wrote:
On Tue, 13 Jan 2015 01:57:56 -0800
Tom Van Baak t...@leapsecond.com wrote:
I was told some of the time slots of https://fosdem.org/2015/schedule/track/
time/
might be tentative
Well, it's FOSDEM. It's not a professionally organised
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