At 08:16 21-11-11, you wrote:
I heard on the BBC the other day that a repeat experiment is
planned, firing neurinos from the US into Canada. The labs were not
cited, but I expect it would be Fermilab to Sudbury Ontario. If
this is the case, then there will still be the problem of not being
On Nov 20, 2011, at 3:29 PM, Frederick Bray wrote:
There appears to be a 1pps function. The test documentation that came with
mine showed that step # 22 of the TS2700 PANEL TEST was a 1 PPS output test.
As I recall from prior reading, there appears to be such an output on the
PRS10. It
michael.c...@sfr.fr said:
I heard on the BBC the other day that a repeat experiment is planned,
firing neurinos from the US into Canada. The labs were not cited, but I
expect it would be Fermilab to Sudbury Ontario. If this is the case, then
there will still be the problem of not being able
Le 21/11/2011 09:49, Hal Murray a écrit :
michael.c...@sfr.fr said:
I heard on the BBC the other day that a repeat experiment is planned,
firing neurinos from the US into Canada. The labs were not cited, but I
expect it would be Fermilab to Sudbury Ontario. If this is the case, then
there
Has anyone thought about the fact that verticals converge towards the
centre of the earth?
The surface distance is greater than the distance at a depth.
A map distance is made less, a few hundred metres underground.
Just another thought,
Cheers, Neville Michie
Neville,
If they haven't thought of that one I'd be very very disappointed.
Jim
On Monday, 21 November 2011, Neville Michie namic...@gmail.com wrote:
Has anyone thought about the fact that verticals converge towards the
centre of the earth?
The surface distance is greater than the distance
Have you already made calculations? For 200 meters underground I have a
path 20 meter shorter...
On Mon, Nov 21, 2011 at 11:09 AM, Neville Michie namic...@gmail.com wrote:
Has anyone thought about the fact that verticals converge towards the
centre of the earth?
The surface distance is
I removed the SRS PRS-10 oscillator from my unit for examination. The
1PPS output appears on Pin #5 (See page 19 of the manual) and is not connected
to the 2700.
It appears the 2700 does not rely on the PRS-10 alone for timing
information; it tracks and aggregates available sources.
Kevin,
Thanks for all the information re: the internal wiring.
It sounds like the 1 PPS output that was tested must be somewhere on the
board, even if it isn't used. In looking at the test data, it appears
that the boards were tested before final assembly. I am inferring this
from the fact
A good friend, who has written a lot of excellent real-time software,
maintains that that it is impossible to find all of the systematic
errors in something as complex as the GPS system. The error is small,
60 ns in 2.4 ms, about 3 E-5, for OPERA or 8 E-5 for MINOS.
Has anyone measured the speed
Hi Bill:
Are they using GPS directly, or to discipline a high quality oscillator, say a Cs? Since it's frequency is spot on then
all the GPS is doing is setting the edge of the 1 PPS. The difference between the Cs 1 PPS and GPS 1 PPS can be
measured over a day or more to see what it looks
Keep in mind that a common view or LOS light method will have a
problem with the variability of the medium density along the path
being unknown.
You could do it in a vacuum however.
I come back to the base question of 'since the speed of light varies
depending on the medium, does the speed of the
On 11/21/2011 08:57 PM, Brooke Clarke wrote:
Hi Bill:
Are they using GPS directly, or to discipline a high quality oscillator,
say a Cs? Since it's frequency is spot on then all the GPS is doing is
setting the edge of the 1 PPS. The difference between the Cs 1 PPS and
GPS 1 PPS can be measured
On 11/21/2011 09:49 AM, Hal Murray wrote:
michael.c...@sfr.fr said:
I heard on the BBC the other day that a repeat experiment is planned,
firing neurinos from the US into Canada. The labs were not cited, but I
expect it would be Fermilab to Sudbury Ontario. If this is the case, then
there
On 11/21/2011 11:49 AM, Jim Palfreyman wrote:
Neville,
If they haven't thought of that one I'd be very very disappointed.
They have.
The neutrino path goes as deep as 11,2 km below ground if I recall
things correctly.
Cheers,
Magnus
Jim
On Monday, 21 November 2011, Neville
Has anyone measured the speed of light with GPS clocks in the same way that
neutrinos are measured - say between mountain tops?
I'm pretty sure that won't work very well. The problem is that air isn't
vacuum. The index of refraction changes slightly with temperature.
The subtle changes in
Kevin wrote:
The PPS in/out of the PRS10 do not appear to connected to the TS2700
logic board.
I believe the TS2700 does not take PPS timing from the PRS10, nor
does it discipline the PRS10. It does, however, keep tabs on the
frequency of the PRS10, and I believe it uses this information
It an awful long time since I did nuclear physicsback then the neutrino
was massless and the standard model didn't exist. There were some way-out
models being proposed.smokey globe!!
A couple of things occur to methey dont actually measure the time
outgoing of the neutrinos...they
On Mon, Nov 21, 2011 at 4:08 PM, Alan Melia alan.me...@btinternet.com wrote:
You can't measure anything with out perturturbing it in some way, even
slightlythen there is the Uncertainly Principle if they measure the
speed how do they know where they were.
OK, So assume an unlikely
Fear Uncertainty and Doubt from Wireless For America dot Org (AKA
Lightsquared) . Approved by Republican and Democratic Regulators.
http://www.youtube.com/watch?v=HyyDIk8W6Kw
--
Joe Leikhim
Leikhim and Associates
Communications Consultants
Oviedo, Florida
www.Leikhim.com
Hi
You can have a surveyor come out and locate your gizmo to sub one inch accuracy
for a lot less than a clock trip costs. A one meter ( or 3 ns) error would be
pretty large these days. Both have been demonstrated / proven so often that
they aren't really open to challenge.
The total error is
On Nov 21, 2011, at 4:13 PM, Charles P. Steinmetz wrote:
The whole point of the TS2700 is to be a Stratum 1 time source. See the
TS2700 manual at pp. 14 and 113. The TS2700 clearly sends TOD information --
pretty much every BTMon window contains a TOD display.
Hi Charles,
Thanks very much
I would recommend:
1. A tax on those that are pushing the limits of the existing network.
2. A tax on those that would want to use the new network.
3. Insure that the new network is built exclusively with unionized workers.
4. Insure that all employers that are involved in the design,
Sorry. Forgot the Trial Attorneys.
5. Require that any entity involved with the new network is jointly and
severally liable for any and all damages/deaths, etc., etc., resulting from
the new network.
Joe
-Original Message-
From: time-nuts-boun...@febo.com
I'd tax every Lady Gaga song played over the network and every Obama
speach at twice that rate.
IMO, almost all the network traffic is worthless fluff.
YMMV,
-John
===
I would recommend:
1. A tax on those that are pushing the limits of the existing network.
2. A tax on
On 11/21/11 5:15 PM, Bob Camp wrote:
Hi
You can have a surveyor come out and locate your gizmo to sub one inch accuracy
for a lot less than a clock trip costs. A one meter ( or 3 ns) error would be
pretty large these days. Both have been demonstrated / proven so often that
they aren't really
You guys missed my point. I did not mean that survey and timing errors are
so large What I meant was that even if you assume unreasonably large
errors (like a surveyor being off by a full meter) you still don't get
60nS.
If I were to bet money, still I'd bet on some experimental error. That
Kevin wrote:
The reason for my posts about its internals is to see if it can do more that
what it advertises. Things like a unused cutout in the case with the label
GPS on the inside and a BTMon error message about PPS too high
makes me wonder what the TS2700 can do beyond what's documented.
Le 22/11/2011 01:28, Joe Leikhim a écrit :
Fear Uncertainty and Doubt from Wireless For America dot Org (AKA
Lightsquared) . Approved by Republican and Democratic Regulators.
http://www.youtube.com/watch?v=HyyDIk8W6Kw
Local wireless networks are already in use here in France to cover areas
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