Hi
But, by their nature, not useful for timing or precision navigation. They are
simply
a solution to the “feed you coupons at the mall” issue. Since they run as an
independent
system (they have their own ID’s) the direct “pollution” issue on a GPSDO is
eliminated.
You still have the previous
Hi,I am looking for datasheet of my piezo crystal company OCXO model 2930175
with freq 10.000MHz.in case someone has pin out its also helpful.Thank You
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Dave,
Since you are a ham, you might want to visit and operate the ITU amateur
station in Geneva. I assume that it is still there, but you might want
to check since it's been 35 years since I did it. Just bring your
original license -- or what passes for that these days.
I don't recall wha
Dana, the magnetic impulse of a quartz watch stepping the second hand forward
is easily picked up by an unshielded coil. Wind a couple hundred turns of
magnet wire around a bottle cap and hold near the watch face. Plug into the
microphone input of a PC and run audacity to record the waveform. Yo
Hi
The most common way to pull the 32KHz signal off of a watch is via a tuned
microphone. At least that’s the way we did it in production. A watch crystal
*can* (but usually doesn’t) move > 100 PPM with temperature. When things
are set up, assumptions are made about “your” temperature environme
Am 15.03.2018 um 19:07 schrieb Henk Peek:
Hi Dave,
I, you and more time-nuts (?) go to the Hamradio meeting Friedrichshafen June 1
- 3. Is there interest in an informal be together?
I also plan to go to Friedrichshafen.
WRT Switzerland, I'll leave that to Attila. It's his home turf, after
a
Hi Dave,
I, you and more time-nuts (?) go to the Hamradio meeting Friedrichshafen June 1
- 3. Is there interest in an informal be together?
Guided tours for individuals to Visit CERN
https://visit.cern/tours/guided-tours-individuals
Tours will be organized in groups of 24 visitors in the same l
Most of the quartz watches I've owned were off by about 1-2 minutes per
month,
which I consider inexcusable.
Agreed, the mechanical trimmer is rather problematical, but I'd sure like
to see
*something *that the sophisticated user can tweak at home. Measurement of
the
current rate error is probably
Hi
> On Mar 15, 2018, at 1:33 AM, Dana Whitlow wrote:
>
> I concur with Bill. And even if one keeps tabs on the current watch error,
> as is the usual practice by celestial navigators, once that error reaches
> or exceeds more than a minute the process frankly gets more clumsy and
> error pron
Also worth mentioning is the Swiss standards organization, METAS, in Bern.
Their time and frequency group has a few atomic clocks, a maser, and some other
shiny things they use for realizing UTC(CH), as well as a few research projects
related to the subject. While not formally open to the public
Such system already exists, is called IMES, uses L1 band and is supported by
standard Ublox 8 firmware.
http://gpsworld.com/wirelessindoor-positioningopening-up-indoors-11603/
Leo
> From: Stewart Cobb
> Peter Reilley suggests a backup to GPS using terrestrial transmitters. This
> idea has bee
Hi
Yes, but will it display TimeNuts emails on the face of the watch?
Better hope it’s a top poster it does :) …. scrolling through a lot of text is
sort of non-functional on the Apple Watch.
Bob
> On Mar 14, 2018, at 9:58 PM, Jean-Louis Oneto wrote:
>
> The half dial in 02:00 with "S M T
Hi Dave,
the center of the Swiss watch & crystal industry is the small town of Grenchen,
location of many famous watch makers including the SMH group which includes
Microcrystal, previously also Oscilloquartz, and the following wathc brands:
Prestige and Luxury:
Breguet (CH)
I concur with Bill. And even if one keeps tabs on the current watch error,
as is the usual practice by celestial navigators, once that error reaches
or exceeds more than a minute the process frankly gets more clumsy and
error prone. And if a watch drifts in time very rapidly, one loses faith
in i
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