I would like to make time stability measurements of various clock sources over
a time range from 0.1 sec to 1000 sec and down to as much below 10^-12 as I can
afford. Mainly I am interested in 10 MHz but also would like to be able to test
stability and phase noise of synthesizers at higher frequ
Nice, Jim!!!
On 2018-04-13 01:54, Tom Van Baak wrote:
Amazing news... 1.2.3.
1) Many of you know that pulsars are weird astronomical sources of
periodic signals. Some are so accurate that they rival atomic clocks
for stability! True, but I don't have a 100 foot antenna at home so
I'll take thei
Hi,
On 04/14/2018 06:45 PM, John Larkin wrote:
> Hi, Magnus,
>
> We did a little PC board that has two Analog Devices CML comparators
> that feed the flop.
>
> https://www.dropbox.com/s/05ti1c57eush0uq/99S394A.pdf?dl=0
>
> An external DAC tweaks the VBIAS voltage to slew the edge times across
Am 15.04.2018 um 20:27 schrieb Ulrich Rohde via time-nuts:
Before I forget it, Bernd Neubig seems to build the worlds best Colpitts
circuit 100 MHz oscillator and uses my published thought to use the crystal
filter as the noise filter to the next stage. I was never able to get the
Driscoll o
Hi
> On Apr 15, 2018, at 1:01 PM, Gerhard Hoffmann wrote:
>
>
>
> Am 17.03.2018 um 00:57 schrieb Ulrich Rohde via time-nuts:
>> https://synergymwave.com/articles/2013/04/full_article.pdf
>> This may be still of interest... happy weekend, 73 de Ulrich, N1UL
>>
>>
>
> Since the weather did
Before I forget it, Bernd Neubig seems to build the worlds best Colpitts
circuit 100 MHz oscillator and uses my published thought to use the crystal
filter as the noise filter to the next stage. I was never able to get the
Driscoll oscillator spurious free. Bernd Neubig can offer more details .
Good work,
yes, we did not include the fundamental frequency suppressor in the circuit
diagram, we needed the oscillator for the evaluation of the test equipment at
the time..
happy Sunday evening ... Dj2LR
In a message dated 4/15/2018 2:02:01 PM Eastern Standard Time, dk...@arcor.de
writ
Am 17.03.2018 um 00:57 schrieb Ulrich Rohde via time-nuts:
https://synergymwave.com/articles/2013/04/full_article.pdf
This may be still of interest... happy weekend, 73 de Ulrich, N1UL
Since the weather did not look so nice this weekend, I canceled a
2-day motorcycle tour and tried t
Hi
There isn’t much you can really see on a GPSDO comparing it to a normal OCXO.
The OCXO simply is not accurate enough. You need something like a Cs standard,
a different GPSDO, or a good Rb for the reference. (Yes, if you have a hydrogen
maser, you *can* use that ….).
First thing to check is
kb...@n1k.org said:
>> A KS-24361 says:
>> Predict 394.1 us/initial 24 hrs
> That would suggest the unit is unlocked. It should be below 10 us. Just as
> with the 3801, the estimate is a bit fuzzy. You should be able to see issues
> in the data on the Z3809/Z3810.
It says it is locked and has
On Wed, 11 Apr 2018 03:00:23 -0700
Pete Lancashire wrote:
> Needed for SDR project as external clock source.
If your goal is, as Jim guessed, to get 24MHz from 10MHz and
you are using something like an RTL-SDR, then how about just
passing the 10MHz through a CMOS gate to square it up and
get nic
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