Check out http://www.deluoelectronics.com/customer/home.php
The stuff is designed to work with a laptop via USB or Bluetooth, under
$100.
I tried it several years ago and found it OK, but I seldom get lost.
Regards,
Bill Hawkins
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL
pation, come on up to the lab, let's see what's on the slab ...
and so on.
Pardon me if it only has a little bit to do with precision time, but it's
that time of year.
Regards,
Bill Hawkins
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Please see their home page. W.J. Ford closed for business on Oct First.
There is a link to an auction outfit.
Bill Hawkins
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On
Behalf Of Poul-Henning Kamp
Sent: Sunday, October 29, 2006 12:50 PM
To: time-nuts@febo.com
I have one of those, too. No manual, of course.
Some TT GOES receivers, still in original boxes, had the
plastic bag slit and the manual removed, without removing
the receiver.
Bill Hawkins
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On
Behalf Of Majdi S
interesting. Anyone
want to make them up?
Doug
What! My wavemeters don't count as a frequecy standard?
Bill K7NOM
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(probably).
Bill K7NOM
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If your 117A, listening to WWVB, draws straight lines
then something is wrong with it. You should see a change
between day and night.
Ah, unless you live near Fort Collins, CO.
Bill Hawkins
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On
Behalf Of tom
Sent
Tom,
tf.nist.gov doesn't seem to exist.
Bill Hawkins
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On
Behalf Of Tom Van Baak
Sent: Saturday, November 04, 2006 7:21 PM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] Re Certified
Ah, yes, I have one of those FAA tuning fork standards . Never
occurred to me to mount it in a three dimensional gimbal in order
to discipline it to GPS. Might wear out the mechanism, though,
as it attempts to track the ever-shifting GPS reception.
Regards,
Bill Hawkins
(My wife thinks I'm
in angles, for instance. A clear field
of view, for another.
Regards,
Bill Hawkins
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On
Behalf Of Brooke Clarke
Sent: Sunday, November 05, 2006 1:29 PM
To: Tom Van Baak; Discussion of precise time and frequency measurement
Wow. There are some sophisticated tools to measure power
line frequency, indeed.
Many thanks for the report. Curious about what would cause
that kind of massive overload. Seems like several generating
plants just dropped off the grid.
Regards,
Bill Hawkins
-Original Message-
From
Normand Martel VE2UM wrote,
With Cesium, high end techniologies like fountains or beans
can be used
Yes, I know it's a typo and I mean no harm to Normand, but it
gives new meaning to the term bean counter. (Normally, a bean
counter is an accountant.)
Regards,
Bill Hawkins
Heard it in Round Rock, TX (EM10) - was considerably weaker than W1AW.
Bill (kd5tfd)
At 11:47 PM 11/16/2006, you wrote:
Did anyone hear the west coast station? I and another station here in
Tucson did not.
Henry
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time
subscribe to
Harper's, for as long as I can remember (at 68, that is not
necessarily very long).
Rob Seaman is quoted extensively. Poul-Henning Kamp is not.
Perhaps she had no budget for overseas interviews.
Regards,
Bill Hawkins
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Yesterday, a coronal mass ejection from the sun was aimed
right at the Earth. There are lots of HF propagation
effects. Geosynch satellites could experience failures.
The major storm will end on the 16th.
Anybody notice anything in the time domain?
Bill Hawkins
Has anyone got one of these (part number KS24019 L105A) up and running?
Is a manual available?
Bill Hawkins
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On
Behalf Of Jason Rabel
Sent: Wednesday, December 20, 2006 10:58 AM
To: 'Discussion of precise time
John,
Many thanks for posting the photos. Now I know that there are
no card edge connectors and no need to find a card rack. The
connectors are not all that difficult to trace. The arrow
pointing to +24 is a help.
What's all this about 15 MHz out?
Bill Hawkins
-Original Message-
From
of plywood, with
maybe 50 connectors. They were tested for continuity and isolation by a
test instrument made by DITMCO. The acronym was for the Drive-In Theater
Manufacturing Company.
Happy Holidays, as the dark days settle upon the Northern hemisphere.
Bill Hawkins
%208.5.2.0.ppt
Regards,
Bill
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the ability of the crystal to age well?
Happy New Year, all. At least, may it start out with a
sustainable level of happiness. But if it doesn't, may
you have some good fortune before the Odometer of Time
clicks off another year, and we get to start over.
Regards,
Bill Hawkins
(Sorry to introduce
I notice that the LORAN station at Middletown is now transmitting nine
pulses instead of eight.
Has anyone done anything with the data encoded in the ninth pulse? The
ninth pulse seems
to position modulated. I built my own, bare bones, receiver and I would
like to decode
the info.
Bill K7NOM
the oscillator is locked. Both of their 10 MHz IN
SMA connectors still had plastic caps.
I bought these units, and two of their RB cousins, hoping to get
rid of the HP Z3801 units and the CS standard. They add $30 monthly
to the electric bill. Now it seems that I was seriously misled, but
that's
Arrgh! Make that TWO 12.5 volt batteries.
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On
Behalf Of Bill Hawkins
Sent: Sunday, December 31, 2006 1:15 AM
To: 'Discussion of precise time and frequency measurement'
Subject: Re: [time-nuts] New pics of RFTG-m-Rb
So, if we have two sources of 15 MHz in a CDMA minicell, each with
its own SMA connector, what module receives those two sources and
decides which one to use?
Why use XO and Rb when either could be made redundant for extended
reliability? (not the British sense of made redundant)
Bill Hawkins
as the
Z3801?
Bill Hawkins
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If I did the math right, a 360 phase rotation will take 2000 seconds.
This means the LPRO is about 5x10E-11 off from GPS, no?
What is the protocol for the data at J6? Can it be the same as the
Z3801?
Bill Hawkins
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time-nuts
with a plumb bob. Satellites
need to be aligned with the physical center of the Earth, for
some reason.
See http://en.wikipedia.org/wiki/Prime_Meridian
and http://en.wikipedia.org/wiki/International_Atomic_Time
Regards,
Bill Hawkins
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Well, now that China has shot down one of its old satellites at
500 miles, the GPS navigation system is vulnerable.
Invulnerability is only temporary.
Bill Hawkins
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On
Behalf Of Rob Kimberley
Sent: Friday, January 19
.
Bill K7NOM
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, cheap (elegant) physicists solution, not a fancy
electrical engineers
solution.
Bill Beam, NL7F
Bill Beam
NL7F
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of hands for every application. You would have to hack the electric part
but I think that is do-able.
Bill K7NOM
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reason
not to get carried away.
Bill Hawkins
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On
Behalf Of John Ackermann N8UR
Sent: Sunday, January 28, 2007 6:58 PM
To: Discussion of precise time and frequency measurement
Subject: [time-nuts] Administrivia: Trimming
? By dimensional analysis, G must be conductance, so we
have Ohms^2 under the root, and the answer is in Ohms.
So, what is R the resistance of, and what has conductance G?
Bill Hawkins
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Have you investigated the concept of an attenuator, to use
before the RF gain block?
Bill Hawkins
-Original Message-
Stephan Sandenbergh wrote,
The easiest, of course, would be if there exists some integrated
solution. I browsed through the list of RF gain blocks on the
Mini-Circuits
Have we settled the question of whether or not the RB can
be dominated (no, that's not it) disciplined by an external
1 PPS or 10 MHz signal?
If it can, I'd load up on Rb units and discipline them with
a modern GPS receiver - or maybe replace the OXCO in Z3801s.
Bill Hawkins
Z3801s do dissipate
Google found a 27M4B1 SGS 93 2250 at electrospec.com.
Sadly, electrospec has no specs, just an RFQ form.
Bill Hawkins
-Original Message-
[EMAIL PROTECTED] asked,
So to the question, has any one ever come across a device
marking of 27M4Bl or possibly a bad i(I) not an L(l
.
That proved to be a bridge too far. Didn't get around to selling
them as clocks, either. You need an accurate oscillator and
immortal power, for starters. Simpler ways exist now.
Bill Hawkins
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https
-- number and type of cell, and
physical arrangement -- so I can try to reconstruct it?
Thanks!
John
I have a 1250 and it uses D Lead Acid cells in a long narrow box.
I would expect that yours uses D cells also, but I don't know
Cheers
Bill K7NOM
) number
for it, you can try public access to LOGSA Electronic TMs.
The R-390 list on QTH has used this as a resource for a long
time. Not all of it is public, though.
Bill Hawkins
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?) Broadcast station frequency monitor.
It has a rather large
oven which I suppose contains a crystal. I think that item has a Gates
logo on the front.
Anyone want that or should I just leave it in the scrap.
Bill K7NOM
the term 'technical antiques' isn't widely spread in the mass market.
try to take
.
Thanks
Bill K7NOM
.
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a circuit board?
I log my results with a A-D converter and my Basic program
Bill K7NOM
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Timely friends,
Microsoft does not have support for Windows 98 SE for the DST change.
That is the OS for my machine that talks to the HP Z3801 receivers.
Is there a remedy that does not involve installing XP Home? or Unix?
Bill Hawkins
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Perfect! Many thanks, Jason.
Bill Hawkins
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On
Behalf Of Jason Rabel
Sent: Wednesday, March 07, 2007 1:08 PM
To: 'Discussion of precise time and frequency measurement'
Subject: Re: [time-nuts] Is there a DST Update
Thanks, Rex
It looks like the IntelliAdmin site patch fixes the whole TZ table,
while MS tzedit fixes one zone at a time. That looks like a good
site for many other admin problems.
Bill Hawkins
-Original Message-
Rex said:
In a discussion on another forum, someone posted this link
I just put a Z3801A on Ebay. This is a Z3801A without an antenna or
power supply
It is a clean unit and powers up and locks on to the satellites
The computer port has options set to RS232. The item no. is 190092049523
Thanks
Bill K7NOM
___
time
Follow the money. Every piece of DRMO equipment sold is a
piece of equipment that wasn't bought commercially. With
companies being merged and acquired, wealth concentrates
to where buying congresscritters doesn't show on the bottom
line.
IMHO.
Bill Hawkins
-Original Message-
From
I've seen units that do the switch electronically. If there's
energy at the external input, the internal source is switched off.
Bill Hawkins
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On
Behalf Of Mitchell Janoff
Sent: Sunday, March 18, 2007 3:51 PM
To: time
. Especially since I live 100 meters from a low-speed freight
railroad track. Pity, really. Too soon old, too late smart.
Hope I haven't depressed you.
Best regards,
Bill Hawkins
P.S. Visited Melbourne and Sydney, crossing the bridge on foot, in the
mid 80's. Went to Healsville in a 60 MPH wind
/tvb
http://www.LeapSecond.com
There was a series of articles in The Home Shop Machinist starting in the
September/October 2000 issue that described construction of a Free
Pendulum clock
I think I can find all of the articles if some one wants them
Bill K7NOM (not really nutty about time
or 4 digits are erratic. I am starting to do as much
alignment as I can but am
wondering if this is a known problem and if a cure is known.
Anyway I think I paid too much for this box of problems but will
continue to try to repair.
Any suggestions (on repair only) is appreciated
Bill K7NOM
the ROMs are seated. I did
re-seat them anyway.
Thanks for the comments and now back to work :-)
Bill K7NOM
John Miles wrote:
It's normal for those last few digits to bounce around when measuring
frequency. The shorter the gate time, the less-consistent the LSDs will be.
How do the tolerances
of the
display. Mine is totaly GONE.
The instrument should work fine without it but it would be nice to have
it. I will probably
make something someday.
Bill K7NOM
Then I polish the face with rubbing compound or touch up areas with paint
and coat with a urethane semi-gloss clear.
I can restore
have bearings
that scream at 1 KC. I put mine in a box lined with fiberglass
insulation to kill the noise. Bearings can be replaced.
While you're in there, look for leaking wet tantalum capacitors.
The residue is usually white.
All that aside, it's a mechanical marvel worth restoring.
Bill Hawkins
Chuck,
There is no spare time left in my days.
I respond to offers better than hints.
Have you checked the HP Archive? ... hint... hint
Bill Hawkins
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On
Behalf Of Chuck Harris
Sent: Friday, March 23, 2007 11:06 PM
up a couple of transformers, external to the
case, to provide power.
It will look ugly but should work.
Thanks
Bill K7NOM
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reduced heat dissipation. I am thinking about doing that with the 5370,
considering how hot the rear heat sink runs.
Didier KO4BB
I have already looked at the space available and I think that is do--able.
Bill K7NOM
Bill Janssen wrote:
In addition to my HP 5370, I am also working
change today) to
increase power on demand - in fuel and stress on the equipment.
With any luck, my next message will be about the frequency control
problem.
Bill Hawkins
-Original Message-
From: Hal Murray
Sent: Sunday, July 03, 2011 11:15 PM
I've moved the 60 Hz stuff from
http
of change limit (can't be, 3000 people would have thought
of that.)
We welcome your comments with Enthusiasm.
The references below are important.
Bill Hawkins
-Original Message-
On Fri, Jun 24, 2011 at 7:02 PM, Bob Kupiec bobkup...@comcast.net wrote:
AP: Power grid change may disrupt clocks
Looking for recommendations for a broadband synthesizer with external reference
connection, at least 1mhz to 1ghz with micro to millihertz resolution. Oh
yeah under $1000 or so. I found a real nice one from holzworth but it is about
$5k which is a bit rich for me. I have seen. Various hp
Ok, I have a dds receiver locked to a gpsdo, the radio can only be tuned in 1
hz increments but should be dead on. I can feed the passband into speclab via
VAC and measure a carrier OTA. No problem there...can get decent resolution
but there is some uncertainty with regard to the dds
, only that
the passage of time alters men's passions.
Bill Hawkins
-Original Message-
From: Mike Feher
Sent: Tuesday, July 12, 2011 9:21 PM
A guy is offering a complete set item # 320727122967 on eBay. I already have
one complete set and lots of duplicates, otherwise I would jump
Thanks for the input. I think i am asking for too much in one package (looking
toward future projects). How about 1.8Mhz to 15Mhz To meet the needs of
the primary project (fmt). I would prefer to not have to also use a counter.
Thanks,
Doc
KX0O
Sent from my iPad
when the steep drops in difference occur?
Is anyone else running a similar experiment?
Bill Hawkins
-Original Message-
From: Poul-Henning Kamp
Sent: Thursday, August 04, 2011 1:13 AM
The jumps in the difference looks a lot like transformer phase-lag
in the grid, but the real test
Guys,
Yes, the games are political.
No, politics is not the subject of this list.
I've stopped being curious about things I can't fix.
Bill Hawkins
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periodically meet under the
clock tower to set their watches, and reckon the distances to their
homes by the time offset.
Bill Hawkins, who recently read Neal Stephenson's Quicksilver.
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and see if the buzzing stops.
This is what I'd do, and I've never lost a 5061B yet - but then, I've never
owned one.
Did have a 5065 and some other Caesium standard, both with high initial
heater currents.
Bill Hawkins
-Original Message-
From: Erno Peres
Sent: Saturday, September 03
What is a story about a pot calling a kettle black doing on this list?
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Bert:
Something to be said about no moving parts.Bill-w7kxb
From: ewkeh...@aol.com
Date: Sat, 17 Sep 2011 21:22:30 -0400
To: time-nuts@febo.com
Subject: [time-nuts] temperature control
Recent comments on dewier flasks bring me back to test I conducted last
year using a nice flask that
Quoted
There are three quantities involved here, and most of the coverage
and quite a lot of physicists overlook that:
1. Speed of neutrinos
2. Speed of photons
3. Constant 'c' From relativity.
Until now the assumption have been that 2 = 3, but this is only
The article is actually pretty fascinating regarding how it was all done.
Light can't go through rock (very far), neither can most other particles (some
farther than others). Neutrinos can pass through earth and the sun unimpeded.
It is neat apparently they set up a fiber optic link to test
to
have 24 volt receivers with software like GPSCon that can do SNTP.
RS422 is no problem.
Please let me know if you find drawings and software. Copies are
worth more than postage to me.
Bill Hawkins
-Original Message-
From: k4...@aol.com
Sent: Sunday, October 09, 2011 1:41 PM
I will look
for
ntpd and reads 0s offset). I presume I have to get a soekris unit,
descipline it and use freebsd and ntpns. Input?
--
Doc
Bill Dailey
KXØO
Anyone know where to get one?
--
Doc
Bill Dailey
KXØO
0.01034 0.000148 4
--
Doc
Bill Dailey
KXØO
what i mean is... why would it jump from 0 ns to 1000 ns and back?
On Mon, Oct 17, 2011 at 8:04 PM, Bill Dailey docdai...@gmail.com wrote:
thanks, what am i seeing here?
55852 3520.152 -0.01000 -29.727 0.01083 0.000168 4
55852 3536.152 0.0 -29.727 0.01068 0.000158 4
set up a time interval counter to show the phase between the two
outputs. The Racal-Dana 1992 does that at 10 MHz.
Out of curiosity, what would be the consequences of a steadily increasing
phase error? Would it offend your sense of perfection or would it have real
consequences?
Bill Hawkins
problem.
Perfection demands many oscillators with a voting system. Long winter nights
could be spent solving these problems. I'm too old for that stuff.
(I also post the most recent ideas first, so as not to reread old ideas.)
Bill Hawkins
-Original Message-
From: David VanHorn
Sent
Fascinating thread.
Poul-Henning Kamp mentions contact prell.
Google can't find it. Even quoted, I get shampoo and people with that name.
I understand well contact bounce and contact dwell, but what is the meaning
of prell?
Bill Hawkins
-Original Message-
From: Poul-Henning Kamp
Sent
human empathy. Those who have it can deal
with the fact that no two people are alike. Those who don't would rule
the rest of us without understanding the differences. That's evolution
in action.
Bill Hawkins
-Original Message-
From: Bob Smither
Sent: Tuesday, October 25, 2011 11:32 PM
Bob
, and they are designed to fail to protect
themselves.
Last I knew, the test had been cancelled.
Bill Hawkins
-Original Message-
From: Craig S McCartney
Sent: Wednesday, November 16, 2011 8:49 PM
Yet another challenge to proper time-keeping. I think that I will
re-calibrate the sundial in my yard
for the answer.
Bill Hawkins
b...@iaxs.net (already on all the spam lists)
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the product with a suitable wine. This is really a
great use of your thyme.
Oh, wait - this isn't the thyme-nuts list.
Never mind.
Bill Hawkins
The above was intended to entertain. Please don't be offended.
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their name to a bill that compromised children's safety,
in any way real or imagined.
Lawyers are responsible for the death of common sense in the USA.
Trial lawyers, that is.
Now, a 9 volt battery has a few centimeters between terminals, if that.
It is commonly accepted that electrocution needs
Hey, John, got any idea of the DC to DC converter that charged that
capacitor? What voltage did it put out? Or the time it took to charge
it? Guarantee that you won't light a flash tube with 1.5 VDC.
Move on.
Bill Hawkins
-Original Message-
From: J. Forster
Sent: Monday, November 28
I should have been more direct.
What does a charged flash capacitor have to do with safety concerns
for low voltage batteries touching the tongue?
You can have the last word. It's time I moved on.
Bill Hawkins
-Original Message-
From: J. Forster
Sent: Monday, November 28, 2011 10:28
didn't find them intimidating at all.
The gift shop would sell me a jacket with NSA logos, but I didn't
know where I would wear it. There is a certain cachet to having a
box that was used by top secret agents to decode radio intercepts.
Bill Hawkins
P.S. I'd recommend doing some signal tracing from
as r^+1 for rR
and as r^-2 for rR. (This is a freshman undergraduate Physics problem.)
Bill
Cheers,
Magnus
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nuts
? Sliding the one
ton mass is left as an exercise for the reader, as is installing it in the
basement.
Yours in search of more perfect knowledge outside my field,
Bill Hawkins
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if there is a secret handshake.
Also, periodically I would liek to search the archives but havent yet
figured out how to do it... can anyone help with that?
--
Doc
Bill Dailey
KXØO
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crave conflict.
Best wishes to all as the solemnity of the solstice approaches.
The solstice, at least, is about real planetary time.
Have at it, while you can.
Bill Hawkins
-Original Message-
From: J. Forster
Sent: Thursday, December 15, 2011 3:10 PM
To: time-nuts@febo.com; vintage
with 1 PPS
and you can clock the simultaneous change of the digits. Although,
there is a certain charm to watching the change propagate at some low
serial message baud rate.
Head or tail deletion is a pretty good idea, too.
Bill Hawkins
-Original Message-
From: Jim Lux
Sent: Saturday
on this
unit that have been on this list.
73,
Bill Riches, Wa2dvu
Cape May, NJ
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
Behalf Of saidj...@aol.com
Sent: Thursday, December 22, 2011 1:39 PM
To: time-nuts@febo.com
Subject: Re: [time-nuts
look on this list about a week ago. i wrote up how I did it. very easy. my
unit is holding at a few parts to the -11. sorry i do not have file on ipad.
bill wa2dvu
Sent from my iPad
On Dec 29, 2011, at 6:42 AM, Azelio Boriani azelio.bori...@screen.it wrote:
Someone here has pointed out
Noticed that one of my 5680 units was a bit unstable at times. Reglued the
crystal back on to the board and it it happy!
73,
Bill, WA2DVU
Cape May, NJ
ons there.
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Hi Said,
Excellent plots - what program/ how are you producing the plots?
73,
Bill, WA2DVU
Cape May, NJ
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
Behalf Of saidj...@aol.com
Sent: Wednesday, January 04, 2012 4:18 PM
To: time-nuts@febo.com
Ah ha!! I was hoping that it was a simple excel procedure!! Nice piece
of gear.
Regards
Bill
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
Behalf Of Said Jackson
Sent: Wednesday, January 04, 2012 7:45 PM
To: Discussion of precise time
in our lab. For a hundred bucks you have a RB standard. Spend the
bucks!!
73,
Bill, WA2DVU
Cape May, NJ
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and follow
beyond the capability of quartz at the required
error of one microsecond during the many hours that it will
take to transport Q between CERN and LNGS. Plenty of time
for cracks to propagate or chips fall off.
Why do you say we can ignore such effects?
Thanks for any enlightenment.
Bill Hawkins
If you follow the link to get an offline PDF, you get the whole
magazine in 32 MB. The result is interesting, but some of us would
be better off downloading at night.
This is the wrong list to start a discussion of your blinding
Internet connection speed.
Bill Hawkins
-Original Message
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