I see that William Riley ( author of Stable32) has published a book on
Rubidium Standards. Has anyone seen a copy? Any reviews?
http://www.lulu.com/product/paperback/rubidium-frequency-standard-primer/18171341
I don't have any connection to Mr. Riley or Lulu Marketplace. Can't
even afford
Hi
I'm sure it's a great book.
Bob
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
Behalf Of Ed Palmer
Sent: Tuesday, March 13, 2012 2:48 AM
To: Time-Nuts
Subject: [time-nuts] Book by William Riley
I see that William Riley ( author of
Hi
I suspect you are measuring differences in the Q of the output filter on the
GPSDO vs the OCXO. Put another way: high Q means high phase shift vs load.
Bob
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
Behalf Of Mark Spencer
Sent:
Hi,
I have been reading up on quartz crystal oscillators in the past few
weeks. Something that i couldn't figure out until now is what kind of
configuration the small crystals use.
If you read all those documents on quartz, they all show the oscillator
core as a round plate, approximately 1.4cm
Hi Atilla, I dont have book availabe but AT cut is a thickness-shear vibration
mode so plate area may not be an issue ?? Just harder to make :-))
Alan
--- On Tue, 13/3/12, Attila Kinali att...@kinali.ch wrote:
From: Attila Kinali att...@kinali.ch
Subject: [time-nuts] quartz crystal
Figure 8 on page 7 of H-P app note 200-2 (www.leapsecond.com/pdf/an200-2.pdf)
gives an idea for how HC-49/U strap-type parts are built, just with a smaller
blank than you mention. Not sure what's in SMT parts, but they have used
rectangular beam and fork structures for lower frequencies, at
Hi Attila:
What do you mean by small? For example case dimensions and crystal frequency?
Have Fun,
Brooke Clarke
http://www.PRC68.com
http://www.end2partygovernment.com/Brooke4Congress.html
Attila Kinali wrote:
Hi,
I have been reading up on quartz crystal oscillators in the past few
See: http://softsolder.files.wordpress.com/2010/05/dsc00211-naked-crystals.jpg
From: Attila Kinali att...@kinali.ch
To: time-nuts@febo.com
Sent: Tue, March 13, 2012 1:26:17 PM
Subject: [time-nuts] quartz crystal configuration in small cases
Hi,
I have been
On 03/13/2012 06:35 PM, ALAN MELIA wrote:
Hi Atilla, I dont have book availabe but AT cut is a thickness-shear vibration
mode so plate area may not be an issue ?? Just harder to make :-))
One of the AT cut oscillators I use has a crystal bar rather than a
circular plate. Being mass-produced
http://www.news.com.au/technology/sci-tech/nucelar-clock-100-times-more-accurate-than-atomic-clock/story-fn5fsgyc-1226297068083#ixzz1osFDYtyb
I didn't see a link to a more detailed article. This one tells you
almost nothing.
Joe Gray
W5JG
___
Ed,
where did you find that? it's not even listed on his (Wm. Riley's) website yet.
is there some other treasure trove of time/frequency discussion on the
web that I should know about?
-Eric
On Tue, Mar 13, 2012 at 9:10 AM, Bob Camp li...@rtty.us wrote:
Hi
I'm sure it's a great book.
Bob
On Tue, 13 Mar 2012 10:51:56 -0700
Brooke Clarke bro...@pacific.net wrote:
What do you mean by small? For example case dimensions and crystal
frequency?
For example, the 2x3mm 8-20MHz crystals that are nowadays more or less
standard. Or the 5-20MHz crystals you can get in the small cylinders
On Tue, 13 Mar 2012 10:54:35 -0700 (PDT)
Robert LaJeunesse rlajeune...@sbcglobal.net wrote:
See: http://softsolder.files.wordpress.com/2010/05/dsc00211-naked-crystals.jpg
Ok... so the HC-49/US uses a bar... but it seems to have a different
oscillation mode as the electrodes are only at/near the
On Tue, 13 Mar 2012 12:37:02 -0600
Joseph Gray jg...@zianet.com wrote:
http://www.news.com.au/technology/sci-tech/nucelar-clock-100-times-more-accurate-than-atomic-clock/story-fn5fsgyc-1226297068083#ixzz1osFDYtyb
I didn't see a link to a more detailed article. This one tells you
almost
In starting the layout for my combined T'bolt, LPRO, 10811 box using
linear power supplies, I came across this item on the E
http://www.ebay.com/itm/130663490699
It uses the LT1764 low noise regulator.
The package on the E http://www.audiowind.com/pdf/A-270.pdf
LT1764
His web site has a link to lulu.com for the Stable32 manual. While I
was there I looked to see what else he had and found the Rubidium book.
It's been there since last Oct. I'm surprised that it hasn't been
mentioned on this list.
Ed
On 3/13/2012 12:51 PM, Eric Garner wrote:
Ed,
where
hi Magnus the only bar resonators I have actually seen were NT flexural bar.
Modern cuts probably include all sorts of resonator modesbut are these AT
cuts?
Alan
--- On Tue, 13/3/12, Magnus Danielson mag...@rubidium.dyndns.org wrote:
From: Magnus Danielson mag...@rubidium.dyndns.org
The article was accepted for publication on Feb 22, 2012in
Physical Review Letters.
The March issue has already been published, so maybe this one will be in
the April issue.
The title is
Single-ion nuclear clock for metrology at the 19th decimal place
Authors:
C. J. Campbell, A. G.
Hi
The typical AT low cost crystal is an AT strip. It's rectangular rather than
circular. It still resonates across the thickness dimension, just as the
circular part does.
A modern 32 KHz crystal is set up as a tuning fork. The resonance happens
each arm along it's length. Long ago 32 KHz
Hello,
AT cut crystals can be manufactured both as a round disk or as a strip
resonator, so probably they are AT. For example, these are:
http://cfm.citizen.co.jp/english/product/pdf/HC-49_U-S.pdf and
http://cfm.citizen.co.jp/english/product/pdf/CSA-310_309.pdf
Regards,
Javier
El
Hi Bob thanks for that. In replying to Atilla's query I did hope to trigger
some responses that would update my knowedge as well. My experience of
resonators is some 40 years old. Do you know if the older more massive blanks
have a higher Q than these small bar ATs. All the high quality
I'll admit to being a bit rusty in my particle physics, but since when do
neutrons orbit the nucleus?
-Mike-
On Mar 13, 2012, at 5:04 PM, David McQuate mcqu...@sonic.net wrote:
The article was accepted for publication on Feb 22, 2012inPhysical
Review Letters.
The March issue has
Hi
The full answer is always that depends. The simple answer is that you will
sacrifice Q as you make the resonator smaller, regardless of it's shape.
Bob
On Mar 13, 2012, at 5:40 PM, ALAN MELIA alan.me...@btinternet.com wrote:
Hi Bob thanks for that. In replying to Atilla's query I did
Yes, I caught that, too. I just chalked it up to the average
non-technical journalist, considering where this article was
published.
Joe Gray
W5JG
On Tue, Mar 13, 2012 at 5:27 PM, Michael Costolo
michael.cost...@gmail.com wrote:
I'll admit to being a bit rusty in my particle physics, but since
Thanks. I missed that discussion. Sometimes, when messages don't look
immediately interesting, or when they stray way off topic, I'm prone
to delete without reading :-) At times the list is very quiet and at
other times too busy to keep up with.
Joe Gray
W5JG
On Tue, Mar 13, 2012 at 1:27 PM,
On 03/14/2012 12:27 AM, Michael Costolo wrote:
I'll admit to being a bit rusty in my particle physics, but since when do
neutrons orbit the nucleus?
In the same way as the outer electron orbits the nucleus.
It's a quantum state with energy levels. Select it wisely and it can
provide a
I guess my point was the neutron is a nuclear particle and so the concept of
it's orbit seemed, out of place. Hence my confusion. Excitation of neutron
energy states might have been more appropriate language? Now where is my copy
of Eisberg and Resnick?
-Mike-
On Mar 13, 2012, at 7:45 PM,
On 03/14/2012 12:53 AM, Michael Costolo wrote:
I guess my point was the neutron is a nuclear particle and so the concept of
it's orbit seemed, out of place. Hence my confusion. Excitation of neutron
energy states might have been more appropriate language? Now where is my copy
of Eisberg and
We time nuts now have a set of manuals for the Austron 2201a GPS receiver.
Thanks to K4CLE for the ops manual and I had the service manual they have
been encoded to pdfs and uploaded to Diddier's site for posting when he
gets ready.
Diddier upload puts them in root???
The service manual is 600
Does anyone have any Trimble Thunderbolt units for sale?
Please reply off list.
Sam
W3OHM
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Just a note to let you know that George, K2CM, has joined the list.
George
K2CM, Vestal, NY
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Does anyone have any Trimble Thunderbolt units for sale?
There are many on the popular auction site, some from stateside sellers
from time to time.
-Arthur
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Hi, George
Is there anything that distinguishes you from the thousand others on this
list?
What is there about time that interests you? That makes you a nut?
Do you lean towards theory or the soldering iron? Is bit twiddling your
interest?
Assuming that you have followed human nature and
Paul,
Thanks to Doug above I am trying two methods to use a Novatel starview
receiver that also puts out a 35.42 Mhz IF. The methods have to do with
A small typo: Starview is the evaluation software used to run the legacy
CMC (Canadian Marconi) line of receivers - Allstar, Superstar and
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