That's only about the third unit I've ever even heard of. They seem to
be rarer than hen's teeth these days. All the more reason to kick
myself for giving back the one I borrowed around Hallowe'en 1990 or so
to compare it with my GC-1000 and watch Daylight Saving Time end for the
year. It did
jim...@earthlink.net said:
Exactly... I've got an array of mirrors on az/el mounts (two servos
stacked) and the reflection from the mirrors on the wall forms the display.
How many pixels in that display? Or what is the unit of quality measurement?
What sort of ADEV are you aiming for? If
On 2015-07-04 15:01, Tom Van Baak wrote:
(the Japan earthquake in 2011 sped the earth up by 1.8 microseconds/day.
The Sumatra quake on 26 Dec 2004 had a bigger effect: 6.8 microseconds)
Just in case you didn't know -- these are theoretical results only. There's a
guy at JPL (Richard Gross)
Hi,
This is leap second video from NICT Japan.
https://www.youtube.com/watch?v=p_VV7d3GEhk
everyone were gather together to see leap second moment.
Best Regards,
--
-dikshie-
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On Saturday, July 04, 2015 05:20:45 PM paul swed wrote:
Matthias
I am afraid I am not much help here.
I did look at the a19/20 interpolators. A lot going on in that small space.
I guess i would check the 200 MHz feeding into it. The VCO is fairly simple
in using a gate and a delay line. I
re: Nortel Trimble NTBW50AA GPSTM 10MHz Oscillator GPSDO
Hello to the Group,
An admitted late arrival to the group here. My initial time system launch
revolved around
using a Trimble Thunderbolt.
But used Trimble Thunderbolts for sale don't appear to be as plentiful as they
once were
and
No the oscillator frequency determining delay line is a microstrip line on a
ceramic substrate. The coax delay lines are used for not critical delays in
the delay line vco start and stop
On Saturday, July 04, 2015 05:20:45 PM paul swed wrote:
Matthias
I am afraid I am not much help here.
Hello Dikshie,
Thanks for sharing this. Wow, not sure we had anything in the US that was
comparable - crowd actually applauded.
Best Regards,
John W.
On Sat, Jul 4, 2015 at 5:15 PM, dikshie diks...@gmail.com wrote:
Hi,
This is leap second video from NICT Japan.
On 07/05/2015 01:52 AM, skipp Isaham via time-nuts wrote:
re: Nortel Trimble NTBW50AA GPSTM 10MHz Oscillator GPSDO
Skipp,
I have one of those.
The supplied antenna is outside connected using RG59, high quality
coax but presumably a 1.4 SWR, which is fine.
Lady Heather is working showing the
The problem is that the whole VCO is packaged. The
connections from the VCO to the outside world are fairly
simple: -5,2 Volt, a bias for the buffer amplifier, the
tuning voltage and the start/stop line. The start/stop line
is tied to gnd with 2.2 µH, so even if the start/stop
circuit woud
On 7/4/15 10:25 PM, Brian Inglis wrote:
Thanks for the good and interesting refs.
One of the interesting points was that normal variations are multiples
of those caused by earthquakes, and annual variations are up to 1ms and 1m.
Another was that the jet streams produce large short term
On Sun, Jul 5, 2015 at 7:52 PM, John C. Westmoreland, P.E.
j...@westmorelandengineering.com wrote:
Hello Dikshie,
Thanks for sharing this. Wow, not sure we had anything in the US that was
comparable - crowd actually applauded.
sorry for wrong url.
the previous one was 2012.
the 2015 leap
On 7/4/15 7:53 PM, Hal Murray wrote:
jim...@earthlink.net said:
Exactly... I've got an array of mirrors on az/el mounts (two servos
stacked) and the reflection from the mirrors on the wall forms the display.
How many pixels in that display? Or what is the unit of quality measurement?
What
Matthias
OK my diagrams show traditional parts like ecl gates. To Bruces comment
that the delay line is not coax. Makes sense. But I have never had to get
to the level you will need. It is odd that two do not work. But
interpolators are funny things and its possible both are on some edge. Not
to
Hi
On Jul 5, 2015, at 1:52 AM, skipp Isaham via time-nuts time-nuts@febo.com
wrote:
re: Nortel Trimble NTBW50AA GPSTM 10MHz Oscillator GPSDO
Hello to the Group,
An admitted late arrival to the group here. My initial time system launch
revolved around
using a Trimble Thunderbolt.
Hi
On Jul 5, 2015, at 8:46 AM, Jim Lux jim...@earthlink.net wrote:
On 7/4/15 7:53 PM, Hal Murray wrote:
jim...@earthlink.net said:
Exactly... I've got an array of mirrors on az/el mounts (two servos
stacked) and the reflection from the mirrors on the wall forms the display.
How many
These are pricey but offer 5900 steps over 120 degrees. 0.02 degree per step.
At least you could try a couple. If you have many of them it would get
expensive quickly.
http://www.horizonhobby.com/ds8231-ultra-precision-servo-jrps8231
Sent from mobile
On Jul 5, 2015, at 7:46 AM, Jim Lux
I have been working on and off on that kind of project for a while.
One type of issue you have when trying to control hardware from a web page is
that any hardware access from a web server poses many issues, such as
permissions and the fact that web servers are basically stateless and many are
On 7/5/15 8:43 AM, Bob Camp wrote:
Hi
On Jul 5, 2015, at 8:46 AM, Jim Lux jim...@earthlink.net wrote:
On 7/4/15 7:53 PM, Hal Murray wrote:
jim...@earthlink.net said:
Exactly... I've got an array of mirrors on az/el mounts (two servos
stacked) and the reflection from the mirrors on the wall
Le 5 juil. 2015 à 14:38, Jim Lux jim...@earthlink.net a écrit :
On 7/4/15 10:25 PM, Brian Inglis wrote:
Thanks for the good and interesting refs.
One of the interesting points was that normal variations are multiples
of those caused by earthquakes, and annual variations are up to 1ms and
Hi
On Jul 5, 2015, at 3:17 PM, Jim Lux jim...@earthlink.net wrote:
On 7/5/15 8:43 AM, Bob Camp wrote:
Hi
On Jul 5, 2015, at 8:46 AM, Jim Lux jim...@earthlink.net wrote:
On 7/4/15 7:53 PM, Hal Murray wrote:
jim...@earthlink.net said:
Exactly... I've got an array of mirrors on az/el
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