Ulrich,
The problem is the software structure is different for the DS18S20. So the
Tbolt
would not know what to do with it.
BillWB6BNQ
Ulrich Bangert wrote:
Mark,
in this case the DS1620 may perhaps be exchanged against a DS18S20 which
definitely supports the high res reading
Hi Corby,
Took a while to find it, but I knew I had uploaded the data. Half way down this
page from KO4BB's
site.
http://www.ko4bb.com/cgi-bin/manuals.pl?dir=05)_GPS_Timing
BillWB6BNQ
Corby Dawson wrote:
Hi,
I bought an Isotemp OCXO36-54M a couple years ago on eBay and used
Corby,
My BAD ! I got as far as the word ISOTEMP and failed to pay attention to the
part number. Sorry about
that.
BillWB6BNQ
WB6BNQ wrote:
Hi Corby,
Took a while to find it, but I knew I had uploaded the data. Half way down
this page from KO4BB's
site.
http://www.ko4bb.com/cgi
Dave,
I would think the immigration people in the UK would probably have some idea in
that regard. At least it would not hurt to ask them.
BillWB6BNQ
Dave Ackrill wrote:
Sorry for the off topic question, but my partner, Kate, is off visiting
friends in Canada and USA on Friday
Steve,
I am pretty sure he meant lifting off of the surface that the unit would be
sitting
on; i.e., the bench.
BillWB6BNQ
Steve Rooke wrote:
2009/1/12 Hal Murray hmur...@megapathdsl.net:
You can get slightly better cooling if you turn it on its side/end, or lift
the fins off
30cm in diameter. 1 psi (7kPa)
lifts about 50kg. Moving around 1 ton things with 4 pads wasn't
unusual.
The rougher the floor, the more airflow you need.
James,
Do you have any web sites that show such a contration using leaf
blowers ?
thanks,
BillWB6BNQ
, then you have
the ability to have a normal Email service account through ATT.
So my question is why are you restricting yourself to such limited means as WEB
mail ? Particularly when better processes are available no matter how F-upped
Billy G and Microsoft are.
BillWB6BNQ
Mark Sims wrote
WB6BNQ
Ed, k1ggi wrote:
Chris -
To help avoid too much confusion, it needs to be pointed out that this 'E'
notation gets used somewhat imprecisely in context, and you have to read
what they meant rather than what they wrote.
In the convention of scientific E notation, Eb (sometimes eb
of the log detector made by Analog Devices ?
BillWB6BNQ
'
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Bruce Griffiths wrote:
WB6BNQ wrote:
Bruce Griffiths wrote:
Magnus Danielson wrote:
Bruce Griffiths skrev:
David C. Partridge wrote:
Sort of related, but only just - however the signal to noise ratio here
is
so good that I feel impelled to ask.
For 'scope
Mike,
The biggest problem with Bruce's postings is that he does not leave any damn
space between the OLD data and his NEW data. So you spend an unusual amount of
time mentally separating what is going on. Very frustrating !
BillWB6BNQ
Mike Feher wrote:
I am now, and actually have been
something, it seems that there may have been a problem
with
tube from the start ? Out of curiousity, perhaps Corby can enlighten us on that
aspect ?
BillWB6BNQ
[EMAIL PROTECTED] wrote:
Corby,
AT what point would be approp to call symmetricom and complain about defective
tube?I still
that a measurement method was followed. It does not necessarily
mean a direct comparison was made with NIST. Many people I have talked to have
a misconception wrapped around this phrase.
BillWB6BNQ
Ed Palmer wrote:
Bill,
I agree with the comments made by you and everyone else. That's why
it would take to do a Josephson array and still have money
left over to fund that divorce.
BillWB6BNQ
Ed Palmer wrote:
It's nowhere near the idea of a Josephson array, but if a NIST-traceable 10V
+-10uV reference is good enough to satisfy your voltage-nut urges, you can
buy it from
at times, but you can still grasp some form of
understanding from them. The spec sheets for various ICs have quite a bit of
educational value, especially from the better companies like Analog Devices,
Maxim and others like them.
BillWB6BNQ
Patrick wrote:
Hi Everyone
I have consistently had
Yuri Ostry wrote:
Hello,
Sunday, November 2, 2008, 6:31:32, WB6BNQ wrote:
W Hi Yuri,
W Unless you need the longer term stability of an undisciplined Rb source, I
think
W you would be better served to get one of the Timenuts group Trimble
Thunderbolt
W GPS units to use as a home
Magnus Danielson wrote:
What else shines pink at all times when operated?
Cheers,
Magnus - lacks H-maser...
I think I will leave that one alone !
BillWB6BNQ
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GEEZ,
After all this discussion, it sounds like he should consider 2 Cs space devices,
one main and a secondary.
BillWB6BNQ
Poul-Henning Kamp wrote:
In message [EMAIL PROTECTED], Magnus Danielson writes:
Once doppler bin and phase has been achieved for each PRN, [...]
Just
measurement, extremely careful
adjustment and good records would allow it being used as high quality
portable standard if it is kept hot the
whole time during its use.
BillWB6BNQ
Richard W. Solomon wrote:
I am confused (a normal state).
Why would locking an external oscillator to the Trimble
Yuri,
Sorry about that, but I guess the Trimble Thunderbolts are out of stock all
ready.
BillWB6BNQ
WB6BNQ wrote:
Hi Yuri,
Unless you need the longer term stability of an undisciplined Rb source, I
think
you would be better served to get one of the Timenuts group Trimble
question ?
BillWB6BNQ
Bob Q wrote:
Do rubidium standards use an OCXO?
Bob Q.
- Original Message -
From: Rick Karlquist [EMAIL PROTECTED]
To: Discussion of precise time and frequency measurement
time-nuts@febo.com
Sent: Wednesday, October 22, 2008 2:23 PM
Subject: Re: [time-nuts
of the oscillator.
Of course, if you are a purist then nothing but the best is good enough.
BillWB6BNQ
Bob Q wrote:
So why would they not show the same kind of jumps as plain OCXO's? Rick K.
mentioned atomic standards avoid jumps.
Bob Q.
- Original Message -
From: WB6BNQ [EMAIL
it is a formal letter or an informal note. An
Email is a letter ! All the do - dad shorts for smiling and such
(none of which I have learned) allow people to forget how to describe,
more accurately with words, their ideas and feelings.
BillWB6BNQ
Paul,
Send me a photo as well please. I have a Sulzer 1150 5MHz oscillator and am
curious if it looks the same.
BillWB6BNQ
[EMAIL PROTECTED]
Rob Kimberley wrote:
Paul can you send me a photo of your oscillator?
Cheers
Rob Kimberley
-Original Message-
From: [EMAIL
. The only two places that I can think of, off hand, would
be televison and RADAR (systems with multiple terminals).
BillWB6BNQ
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of the FMS you mentioned, the only difference is the devices being
compared are not being moved. The same methodology still applies however.
BillWB6BNQ
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to see that it should be a group
effort. Otherwise you have 3 or 4 people duplicating the wheel so to speak. If
those 3 or 4 could channel their efforts into one project perhaps we would end
up
with the best out of all 3 or 4.
regards,
BillWB6BNQ
diatribe.
BillWB6BNQ
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To clarify item 3
Item 3 came across unclear after reading it again. What was meant was a third
channel to compare either of the two mentioned House Standards to a third device
without interrupting the two primary control channels referred to in item 1.
BillWB6BNQ
Hi Neville,
You said . . . I mounted a12V 1 watt 40mm brushless DC ball bearing fan, . .
Damn, is that thing turbo charged ?
BillWB6BNQ
Neville Michie wrote:
Hi,
I have just commissioned a temperature control for my LPRO rubidium
oscillator.
When I read the specs I noticed
Hi Neville,
In all seriousness, I thought the Rubidium physics package is heated for
reasons. Now that you are heat sinking it, what has happened to the current
draw
for the whole unit ? Or am I misunderstanding something ?
BillWB6BNQ
Neville Michie wrote:
Hi,
I have just commissioned
of these cubicles for access.
BillWB6BNQ
Lux, James P wrote:
In a message dated 05/09/2008 05:23:56 GMT Daylight Time, [EMAIL PROTECTED]
writes:
Trivia: The engineer who designed that chip for HP 35 years ago has the
cubicle next to me at Agilent Labs! It was considered very
.
Of course I have Googled and sure enough BPM is the Chinese time station.
Havent chased after QSL cards in a long time. This is one I sure am going to
request and see what happens.
BillWB6BNQ
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Hi Bill,
You're right there are two US stations on the HF band, WWV and WWVH. I was
generically referring to them both. Although in my mind I did not really think
of WWVH per se. In either case neither WWV or WWVH were not there in any
recognizable strength.
BillWB6BNQ
Bill Hawkins wrote
not found a manual or
even a reference to it anywhere on the WEB or at surplkus
places offering books.
BillWB6BNQ
Dave M wrote:
Phil,
I'm a new subscriber to this forum. I saw that you have a manual for the
Montronics 103A comparator. I have one of these and could use a manual
possible.
BillWB6BNQ
Mike Monett wrote:
Bruce Griffiths [EMAIL PROTECTED] wrote:
Max
A capacitance bridge using a transformer would be a lot
more
stable than merely using the capacitance to vary the frequency
of
an LC oscillator
. As for #1 or #2 questions, I would think
of those as a last ditch effort.
BillWB6BNQ
[EMAIL PROTECTED] wrote:
I am in the last stage of restoring a 1964 General Radio Frequency
Standard Model 1120-AB.
I'm having trouble getting the inner oven to work propoerly
easily handle that level. With care, a
crystal oscillator in a well designed circuit can reach parts in 10^-8
with a bit-bang oven control. HP did that in the late 1950's. From
that point the difficulty is logarithmic.
BillWB6BNQ
Philip Pemberton wrote:
Hi folks
on the Analog Devices program after setting the filter factors.
I certainly am no expert but the Elliptical filter, which I have some
small familiarity with, seemed to be the best choice for the frequency
range.
BillWB6BNQ
References
1. http://designtools.analog.com/dtDDSWeb/dtDDSMain.aspx
WB6BNQ
Mike S wrote:
At 05:42 PM 7/23/2008, Bruce Griffiths wrote...
Another approach is to divide the 10MHz by 5^7 (78125) and then use
an
injection locked multiplier chain to generate 32768 Hz from the
resultant 128Hz output.
It may even be possible to do
guess would be that the antenna might be working correctly.
So I would not be shorting anything out without getting a lot more information
first. Is there anyone else in your area that has such a system that you could
compare with ?
Good luck,
73BillWB6BNQ
Jose Manuel wrote:
Hello
Hi Bruce,
I looked at that also. Using OPERA browser I can zoom in really well and at
400 % you can just make out the trace under the coating and other stuff
obscuring the view.
BillWB6BNQ
Bruce Griffiths wrote:
Jose Manuel wrote:
Hello all,
I´d like to repair a HP58504A antenna
Did it occur to anyone that possibly these units where intended to be used in
some very cold country, like the top of Alaska or some similar place wheere a
little additional help was necessary ? ? ?
Just a thought . . .
BillWB6BNQ
Ed Palmer wrote:
Date: Sat, 19 Jul 2008 20:35:38 -0700
and stick out a panel.
Dave ? Dave ? Why are you unplugging my internet feee
BillWB6BNQ
David C. Partridge wrote:
As I've mentioned before, I've been working on the design of a frequency
divider to go with my TB.
The idea is 10MHz sine in from TB, output 2.5Vp-p 50% duty
Hi Phil,
I am curious about your statement, below, concerning the separate Fluke
comparator. Is it the Fluke Montronics model 100 ?
If so, I have one of those and am wondering if you have the manual for it ?
Thanks,
BillWB6BNQ
phil wrote:
Speaking of the 207, is there any demand
for your consideration.
BillWB6BNQ
phil wrote:
Going from memory, I think it's a 103. Yes I have the manuals for all that
stuff I have.
- Original Message -
From: WB6BNQ [EMAIL PROTECTED]
To: Discussion of precise time and frequency measurement
time-nuts@febo.com
Sent: Tuesday
. There are output BNC's for driving a scope or chart machine,
etc..
When you get the chance, I, and I'm sure, others would appreciate it, thanks.
BillWB6BNQ
phil wrote:
Bill,
Just looked and it's Fluke/Montronics model 103A
It's a big manual if I recall, about the same size as the 207. I could scan
Phil,
I had never seen a picture before. The 103 is much more envolved than the 100A.
The 100A does not have meters, for example.
Thanks for the link,
BillWB6BNQ
phil wrote:
Bill,
For specs, Tucker Still sells it.
http://www.planettest.com/java/jsp
Hi Phil,
Yes, I just got done with it. This unit looks very much like the TRACOR 527.
Quite nice !
BillWB6BNQ
phil wrote:
Bill did you click on that Download Specs link on that page. A PDF of more
detail.
- Original Message -
From: WB6BNQ [EMAIL PROTECTED]
To: Discussion
Bill,
The following URL should allow you to search the archives:
http://www.febo.com/pipermail/time-nuts/
BillWB6BNQ
wje wrote:
Actually, one more question - is there any way to search the list
archives? Either I'm blind, or there's not, or it's not obvious.
Thanks!
--
Bill Ezell
be possible to use cascading DDS chips,
one providing the clock for the other.
What are the thoughts on such an approach ?
BillWB6BNQ
Ulrich Bangert wrote:
Bruce,
Even a DDS followed by a PLL cleanup loop (10811 plus analog PD etc.)
should work well although with a binary tuning word
suggested before on this forum. However, I do not know
what
receiver would fit the scenario.
BillWB6BNQ
Brooke Clarke wrote:
Hi Rick:
10.23 MHz shows up in the ICD-200 spec on how the GPS signal is generated.
I've got a GPS sig gen see:
http://www.prc68.com/I/5001A.html
http://www.prc68.com
Gee Brooke,
If you made the picture any bigger it would not have fit on my screen.
73BillWB6BNQ
Brooke Clarke wrote:
Hi Randy:
Those appear to be the very common 14 pin dip IC oscillators.
pin 7 = ground
pin 14 = Vdd
pin 8 = Out
pin 1 may be no connection or may be inhibit
Hi Jim,
I would have to look in the manual to be 100%, but for 90%, I think the
synchronize button is just to synchronize the 1pps pulse with an external
1pps reference. It is a clock
(i.e., time) function NOT a frequency function.
BillWB6BNQ
Palfreyman, Jim L wrote:
Having got
well a measurement coincides with an acceptably
understood
and agreed upon reference.
BillWB6BNQ
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and follow
of this singular standard, but how long is it going to
stay there ? If the accuracy of the adjustment doesn't stay put, then that
adjustment means little.
So, the question is how do you make a stand-a-lone standard more accurate then
its level of stability ?
BillWB6BNQ
of this singular standard, but how long is it
going to
stay there ? If the accuracy of the adjustment doesn't stay put, then
that
adjustment means little.
So, the question is how do you make a stand-a-lone standard more
accurate then
its level of stability ?
BillWB6BNQ
that WWV also transmits on 2.5, 5 and 15 MHz. 15 MHz is good
during
mid day and 5 MHz is quite good at night time. 2.5 MHz is only good at night
and
a little tough to copy unless you have a good antenna or are living quite close
to it.
BillWB6BNQ
David Welch wrote:
I was wondering with so
WB6BNQ
Brian Kirby wrote:
The Motorola Timing 2000 and 3000 antennas are patch antennas. They
have a pointed radome. The have very little ground plane, which reduces
reception near the ground, which is desirable because of multipath
effects.They also have quite a bit of filtering, so
By the way,
If you do get a Garmin 15, make sure it is the H or L model which has WAAS.
The
regular model 15, which is cheaper, does not have WAAS.
BillWB6BNQ
WB6BNQ wrote:
If you go to the Garmin web site and look at their OEM page, you can order the
OEM versions for around $55 from
developed a
failure. I was using my main unit to drive my laptop software for mapping
purposes. The Garmin 15 will replace it.
BillWB6BNQ
Hal Murray wrote:
The GPS 18 from Garmin is ~130 list, since ti comes with some software
for a laptop.
You want the GPC 18 LVC rather than any
in a nice 8662A instead -- or even an 8640B! -- you
can use your *existing* 8596E to make measurements 30-40 dB below what even
the 8560E series can do.
--- snip ---
-- john, KE5FX
Hi John,
How does a HP-8660C compare to the HP-8662 and HP-8640B in your opinion ?
BillWB6BNQ
Hello Randy,
Can you give more information on the equipment you are trying to calibrate ?
For example the make and model
and what level of accuracy you expect to reach. What is your intended use of
this equipment, i.e., general
hobby use or more serious purposes ?
BillWB6BNQ
Randy
have, somewhere, the actual paper
article about the second one with schematics, etc..
BillWB6BNQ
Hal Murray wrote:
Here are 3 Hewlett Packard appnotes that are in the same vain as the
NBS 140 booklet. In many ways these HP items are better written. The
first one was written in 1961
and physical effort that may not be necessary, please read
through the 3 above references to determine if you really want to get involved
to the
level of additional hardware and expense.
BillWB6BNQ
Ronald Held wrote:
Since the moving option is out, perhaps I need to investigate whether
I currently
on the shelf.
http://cp.literature.agilent.com/litweb/pdf/5989-6171EN.pdf
http://cp.literature.agilent.com/litweb/pdf/5989-6183EN.pdf
http://cp.literature.agilent.com/litweb/pdf/5989-6247EN.pdf
BillWB6BNQ
WB6BNQ wrote:
Hi Ronald,
This list server is composed of three general classes
was needed. Or it
became way too passionate and scared him off.
Well Eric, what say you ? ? ?
BillWB6BNQ
Eric Fort wrote:
I'm looking for a fairly basic, relatively simple 10 Mhz PORTABLE
reference (probably quartz based) with enough stability over a period
of a week of outdoor temp extremes
to the
GPS provides the basics allowing for very inexpensive counters and other
inexpensive devices to provide a degree of comfort.
BillWB6BNQ
Michael J. Dyer wrote:
I've been researching an entry-level system for my own learning and
experimentation. Back in May of 2006 there was a thread
this at home. I find that completely
disingenuous.
BillWB6BNQ
Bruce Griffiths wrote:
John Miles wrote:
What are some of your favorite low-noise regulators? When I made the remark
about the uA723, I was specifically thinking of its performance compared to
the LT1762. With Cref=5 uF
drive source.
BillWB6BNQ
Eric Fort wrote:
I'm looking for a fairly basic, relatively simple 10 Mhz PORTABLE
reference (probably quartz based) with enough stability over a period
of a week of outdoor temp extremes to keep a 47Ghz transmitter locked
within 100hz while mountaintop
to some extent and are not paying attention to the
market.
BillWB6BNQ
Chuck Harris wrote:
The Spaceview is the Accutron model that everyone seems to want (even I want
one),
so much so that the Chinese are now making the necessary reproduction parts to
convert a model with a normal dial
they should be up front and put
their own name on the
product instead of those who they copy.
BillWB6BNQ
Chuck Harris wrote:
Hi Bill,
I guess it depends on what you think it is that the market is
desiring.
There is little or no apparent interest in a newly manufactured
Bulova Accutron
pages worth looking at as a
starter. The first would be the LORAN-C User handbook and then the LORAN-C
Signal Spec links.
BillWB6BNQ
Didier Juges wrote:
I get this (see picture) with the spectrum analyzer and my wire antenna.
That looks a lot cleaner than what I hear on the HP 3586
source adjusted to the same level of the
AC
signal on the scope screen. With careful comparison you could do a little
better
then 3 %. That may be all you need to check yourself for sanity.
BillWB6BNQ
An old, used and tired EX-metrologist
Joe McElvenney wrote:
Hi,
Excuse the topic
); SAEximRunCond expanded to false
Errors-To: [EMAIL PROTECTED] RETRY
Hi Brook,
You could try using a 74123 (or newer variants) retriggerable one shot to extend
the pulse width to a level that would allow you to see it on the scope.
BillWB6BNQ
Brooke Clarke wrote:
Hi:
While trying
, not counting the time base error.
BillWB6BNQ
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to a 5328A.
/tvb
Hi Tom in St. Louis,
I agree with TVB. It would be ashame to cannibalize a good counter, assuming it
is working. You could just run the EFC wires (proper shielding, etc.) out of
the
counter to your GPSDO box if there is not enough room for the GSPDO parts
inside.
BillWB6BNQ
); SAEximRunCond expanded to false
Errors-To: [EMAIL PROTECTED] RETRY
Hi brooke,
The Windows control program link did not work. Can you explain, a little bit,
about the program on your web page, besides here.
thanks
73BillWB6BNQ
Brooke Clarke wrote:
Hi:
Scott will convert
); SAEximRunCond expanded to false
Errors-To: [EMAIL PROTECTED]
Tom,
Very interesting concept ! But I do not think the business world is going to
buy it.
BillWB6BNQ
Tom Clifton wrote:
Just to stir the pot a little - I'm providing a link
to Discover magazine - a tome of great repute
Hey Brooke,
Do you think you could make that picture any smaller ?
73BillWB6BNQ
Brooke Clarke wrote:
Hi Daniel:
I have a CD-ROM set of manuals for a number of Austron instruments for sale,
see:
http://www.prc68.com/I/A2100F.shtml#Man
I'm attaching a photo I just took of my
antenna that Randy sold me and that worked
well also. Just decided to make a more permanent installation.
BillWB6BNQ
Jim Miller wrote:
I'm planning on getting a M12M and would like a recommendation for
an
antenna for timing purposes.
I'm just an amateur looking
OK -- sorry -- the clipped pic of the company logo did not come through.
Ridge Equipment company
1393 Progress Way, Suite 909
Eldersburg, MD 21784
410-549-7661
By the way, I have dealt with them several times and they are a very reputable
company.
BillWB6BNQ
Jim Miller wrote:
I'm
Hi Bill,
Silly question ! Are you using color mode to scan or the grey scale
mode (if there is one) ?
I use an inexpensive Canon scanner in the color mode and get reasonable
grey scale with the default settings, whatever they are.
Just a thought,
BillWB6BNQ
Bill Hawkins wrote:
Having
Hi Jack,
Is DPI the same as LPI ? I have always been confused on that point. If they
are the same, why are there two seemingly different specs used for the same
thing ?
I can do TIFF. How does that compare to the PNG ?
thanks,
BillWB6BNQ
Jack Hudler wrote:
Try scanning
the way they did.
I see that a range of comments have been already made, but I think they
are off base. The natural constants of the universe dictate the natural
phenomena of antenna systems and that is what dictated the course of
history.
I hope this helps explain the history a bit.
BillWB6BNQ
John Day wrote:
At 11:00 AM 5/10/2007, WB6BNQ wrote:
Hi Peter,
snipped
In an effort to standardize, the industry selected the mid point
between
the 35 Ohms and the 72 Ohms, that being 50 Ohms. This forced the
antenna
manufacturers
Jerry,
Do you have a heat sink mounted to the Rb source ? It sounds, possibly, like a
heater not reaching equilibrium.
Didier's suggestion of comparing against WWV would be a good start to find who
is
at fault. Your counter time base may have an unknown problem.
BillWB6BNQ
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