Moin,
On Sat, 31 Mar 2012 09:19:35 -0400
Chuck Harris cfhar...@erols.com wrote:
I think that is why John said that you cannot inspect in
quality. Every worker has to do his job right the first
time, without relying on others to catch his mistakes.
As to your questions about John Forster's
Moin,
On Sun, 01 Apr 2012 16:54:09 -0700
Jim Lux jim...@earthlink.net wrote:
Not a whole lot, but the whole paper goes into the various factors
involved. Ultimately, it winds up that the mismatch from SMAs is
a) a whole lot less than the usual worst case spec of 1.05:1 or 1.03:1
(which is
On 4/7/12 2:47 AM, Attila Kinali wrote:
Moin,
On Sun, 01 Apr 2012 16:54:09 -0700
Jim Luxjim...@earthlink.net wrote:
Not a whole lot, but the whole paper goes into the various factors
involved. Ultimately, it winds up that the mismatch from SMAs is
a) a whole lot less than the usual worst
Hi Attila,
speaking about finger pointing, I would like to make clear, that the
loose connector was on the italian (OPERA) side and not on the
french-swiss side (CERN). The news articles all cited CERN got it wrong,
but as a matter of fact it was OPERA.
Achim
I didn't questions his
On 2 April 2012 00:54, Jim Lux jim...@earthlink.net wrote:
On 4/1/12 2:25 PM, Dr. David Kirkby wrote:
So it tells us nothing very much about the life of them in normal use,
with a human mating and demating them. - or even the repeatability of
the reflection coefficient with a human in the
If the FTL neutrino discovery had been kept quiet until fully vetted, he
probably would not have had to resign.
Compare with the discovery of Cold Fusion. The desire for PR got ahead
of the science.
In my view, somebody who is in responsible charge of any project that size
morally ought to be
On 03/31/12 09:38 PM, Jim Lux wrote:
On 3/31/12 1:15 PM, Brooke Clarke wrote:
Hi Achim:
SMA RF connectors have a very limited life (number of matings) until
they are worn out.
I don't think so. Yes, they're only rated for 500 cycles, but there's a
paper by a guy at Maury Microwave that I ran
On 4/1/12 3:01 AM, Dr. David Kirkby wrote:
On 03/31/12 09:38 PM, Jim Lux wrote:
On 3/31/12 1:15 PM, Brooke Clarke wrote:
Hi Achim:
SMA RF connectors have a very limited life (number of matings) until
they are worn out.
I don't think so. Yes, they're only rated for 500 cycles, but there's a
If you think about it, tightening torque only relates very roughly to
axial mating pressure.
Torque is essentially the force requires to push an object up an inclined
plane.
That is the sum of two components, the normal component of the mating
force plus the in plane component of (mating
On 04/ 1/12 03:33 PM, Jim Lux wrote:
On 4/1/12 3:01 AM, Dr. David Kirkby wrote:
On 03/31/12 09:38 PM, Jim Lux wrote:
I don't think so. Yes, they're only rated for 500 cycles, but there's a
paper by a guy at Maury Microwave that I ran across when trying to get
statistics on the reflection
On 4/1/12 2:25 PM, Dr. David Kirkby wrote:
On 04/ 1/12 03:33 PM, Jim Lux wrote:
On 4/1/12 3:01 AM, Dr. David Kirkby wrote:
On 03/31/12 09:38 PM, Jim Lux wrote:
I don't think so. Yes, they're only rated for 500 cycles, but there's a
paper by a guy at Maury Microwave that I ran across when
On 03/31/2012 05:52 AM, Sanjeev Gupta wrote:
.
On Mar 30, 2012 10:45 PM, paul swedpaulsw...@gmail.com wrote:
I have to say that in general I have been staying clear of this thread.
But its really a surprise that they are that sloppy and basing the results
on a Vectron OCXO. Not that I have
On Fri, 30 Mar 2012 10:42:55 -0700 (PDT)
J. Forster j...@quikus.com wrote:
When doing a complex experiment, you have to be an absolute SOB about
everything. You cannot inspect in quality.
Uhm.. Have you ever visited a site of modern nuclear high energy physics?
Have you ever seen what kind of
I think that is why John said that you cannot inspect in
quality. Every worker has to do his job right the first
time, without relying on others to catch his mistakes.
As to your questions about John Forster's competency at
complicated tasks: You clearly don't know John!
-Chuck Harris
Attila
On Fri, 30 Mar 2012 10:42:55 -0700 (PDT)
J. Forster j...@quikus.com wrote:
When doing a complex experiment, you have to be an absolute SOB about
everything. You cannot inspect in quality.
Uhm.. Have you ever visited a site of modern nuclear high energy physics?
Yes.
Have you ever seen
Yes, I am aware of that. Bayonet and threaded connectors can be mated, or
partially mated as I said. This applies to BNC, C, N, HN, TNC, SMA, APC-7,
and MS at least, but not to LEMO and some families of military and
commercial multipin connectors.
Improper mating can easily be seen on a VNA, and
I agree that you can't inspect quality into a system, but it is far to
easy to 'not inspect' quality right out of the system. Some of the new
'buzz-word' systems (TQM,6 sigma, etc.) seem to want everyone to be
their own QA inspector to lessen the involvement of independent QA. I
find that no
Dear John and all,
I do work in high energy physics and we use LEMO and other standards.
For some years now, I have started to advertise against LEMO (in
particular the LEMO 00 size), as it is VERY sensitive to mechanical
defects and partial connection (yes, you can ..). We have found very
Sorry. click is a bad choice of words. It's more a feel as you mate them
than an audible click.
-John
=
Dear John and all,
I do work in high energy physics and we use LEMO and other standards.
For some years now, I have started to advertise against LEMO (in
particular the LEMO
j...@quikus.com said:
It was happenstance that the OPERA connector was mated enough to work, but
not enough to work properly.
A while ago, I was thinking that half the problem was a design error. But
then I couldn't figure out how to do it right. Maybe monitoring the pulse
height would
If you use a good design on the receivers, AGC output is virtually free.
It doesn't take much more to run that signal to a go/no go comparator.
-John
j...@quikus.com said:
It was happenstance that the OPERA connector was mated enough to work,
but
not enough to work properly.
Remember, there are two varieties of SMA: Those with a gold plated center
pin soldered onto the center conductor and those with a sharpened center
conductor of 0.141 hard line.
The latter are near junk, IMO.
-John
==
On 3/31/12 1:15 PM, Brooke Clarke wrote:
Hi Achim:
SMA RF
On 3/31/12 1:46 PM, J. Forster wrote:
Remember, there are two varieties of SMA: Those with a gold plated center
pin soldered onto the center conductor and those with a sharpened center
conductor of 0.141 hard line.
The latter are near junk, IMO.
Only if you're planning on multiple
You can save some bucks by buying a Little IMP tubing bender that takes
1/8 OD tubing for about $10 at Home Depot.
1/8 = 0.125 which is very close to 0.141. Two minutes with a rattail
file and Voila.
-John
On 3/31/12 1:46 PM, J. Forster wrote:
Remember, there are two
On 03/31/2012 10:29 PM, Jim Lux wrote:
On 3/31/12 12:24 PM, Achim Vollhardt wrote:
Dear John and all,
I do work in high energy physics and we use LEMO and other standards.
For some years now, I have started to advertise against LEMO (in
particular the LEMO 00 size), as it is VERY sensitive to
http://inagist.com/all/185697069783195648/
Personally I'm sorry about such an end of the story.
Antonio I8IOV
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On Fri, Mar 30, 2012 at 3:07 PM, iov...@inwind.it iov...@inwind.it wrote:
http://inagist.com/all/185697069783195648/
Personally I'm sorry about such an end of the story.
There was a meeting in Gran Sasso on Wednesday. You can see some of
the slides at
El 30/03/2012 16:55, Javier Serrano escribió:
On Fri, Mar 30, 2012 at 3:07 PM, iov...@inwind.itiov...@inwind.it wrote:
http://inagist.com/all/185697069783195648/
Personally I'm sorry about such an end of the story.
There was a meeting in Gran Sasso on Wednesday. You can see some of
the
I have to say that in general I have been staying clear of this thread.
But its really a surprise that they are that sloppy and basing the results
on a Vectron OCXO. Not that I have ever had a complaint about those.
It just seems like the stunt I would do in the basement on my surplus
accelerator.
There are failures and there are failures.
A negative result is a failure that is worth reporting.
A failure due to an improperly mated connector... not so much.
When doing a complex experiment, you have to be an absolute SOB about
everything. You cannot inspect in quality.
YMMV,
-John
On Fri, Mar 30, 2012 at 7:42 PM, J. Forster j...@quikus.com wrote:
There are failures and there are failures.
A negative result is a failure that is worth reporting.
A failure due to an improperly mated connector... not so much.
That is saying to anyone who wants to do a similar experiment in
On Fri, Mar 30, 2012 at 7:42 PM, J. Forster j...@quikus.com wrote:
There are failures and there are failures.
A negative result is a failure that is worth reporting.
A failure due to an improperly mated connector... not so much.
That is saying to anyone who wants to do a similar experiment
May anybody out there explain why the connector was simply photographed, and
not put in place, on October 13, that is one month before the updated version
(Nov 17) of the Opera paper?
Antonio I8IOV
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To
I suppose that when it was photographed, nobody noticed it. After
noticed that it was no correctly plugged-in, the past pictures were
reviewed and found that in fact it was not fully plugged in :)
El 31/03/2012 01:04, iov...@inwind.it escribió:
May anybody out there explain why the connector
Hi:
I take a lot of photos for my web pages and every now and then I go back and find something that was in a photo that I
missed when it was taken. It's quite possible that the displayed photos were cropped from larger images showing more of
the system.
Have Fun,
Brooke Clarke
On 3/30/12 4:16 PM, Javier Herrero wrote:
I suppose that when it was photographed, nobody noticed it. After
noticed that it was no correctly plugged-in, the past pictures were
reviewed and found that in fact it was not fully plugged in :)
We do this all the time at JPL. You have someone come
.
On Mar 30, 2012 10:45 PM, paul swed paulsw...@gmail.com wrote:
I have to say that in general I have been staying clear of this thread.
But its really a surprise that they are that sloppy and basing the results
on a Vectron OCXO. Not that I have ever had a complaint about those.
It just
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