Dalibor Farny (Czech) came to clocks and timing five years ago, via Nixie Tubes.
He is now a 21st century manufacturer of Nixie Tubes (over 8,000).
https://www.daliborfarny.com/
The Bombe Clock Project, by Paul Perry,
used Dalibor’s Nixie tubes and original drawings from the Alan Turing Trust
It has been five years (2014) since the Lucent GPSDO units, used in the
cellular industry, appeared on the surplus market. The REF-0 units are still
on the surplus market.
Lucent KS-24361, aka HP/Symmetricom Z3812A.
https://www.prc68.com/I/KS-24361.html
Stewart Cobb & Bob Camp characterized
Hi
You probably are not going to find the Nano’s on the used market.
The last one I worked with was very much a pre-production unit and
that was only a few years back.
Indeed if you are simply looking for a lab clock, the miniature Rb’s may
not be the best choice. Their stability is generally
On 9/17/2019 12:33 AM, Dr. David Kirkby wrote:
Is there any advantage in using a GPS Rb disciplined oscillator vs a GPS
disciplined high quality OCXO like the HP 10811A? I can’t understand why
there should be, as a Rb source would use an OCCO in its output stage
Therefore in each case
*
Dr. Kirby, et al,
Remember that a GPS-disciplined Rb has two loops, hence two time constants,
to
consider:
a) the loop which locks the Rb's internal OCXO to the atomic transition, and
b) the GPS disciplining loop.
I surmise that the internal loop (a) is fast enough to thoroughly suppress
drifts
> I can capture the NMEA data and the TICC data - this is not a problem.
> But I'd really like to be able to capture both datasets in some sort of
> time-correlated way, so I can easily post-process the TICC data using the
> quantization error data. I can probably throw something together in
On 9/17/19 3:33 AM, Dr. David Kirkby wrote:
> On Tue, 17 Sep 2019 at 04:00, Dana Whitlow wrote:
>
>> The nice thing about a Rb is that its short term stability (seconds to
>> minutes and perhaps
>> even longer) is much better than that of a GPS timing receiver. The bad
>> news is that Rb
>>
On Mon, Sep 16, 2019 at 11:00 PM Dana Whitlow wrote:
> All of the available Rb standards that I've seen have a 10 MHz output,
> Some have a
> 1 PPS output as well.
> original buyer could save a few bucks. My PRS-10 is one of these.
>
>
How does this compare with say a used Accubeat AR133/60
On Tue, 17 Sep 2019 at 04:00, Dana Whitlow wrote:
> The nice thing about a Rb is that its short term stability (seconds to
> minutes and perhaps
> even longer) is much better than that of a GPS timing receiver. The bad
> news is that Rb
> standards exhibit long term frequency drift in the
