lling me a replacement disk. So,
can anyone help me with software for this or should I accept it is a door stop
& get rid? My plan was to use this to get consistent signals to test a few
GPSDOs I have acquired. Any advice gratefully received.
Phil
___
time-
Is your code posted anywhere? I've been meaning to do roughly the same.
-- Phil
On Oct 3, 2013 12:07 PM, Collins, Graham coll...@navcanada.ca wrote:
David,
Your raspberry-pi NTP clock is very cool.
I have put together something along the same line but is in reality just a
network connected
in this Zip archive, so
you can either run the program as-is, or modify it to suit your own
preferences.
On 10/3/2013 6:43 PM, Phil Genera wrote:
Is your code posted anywhere? I've been meaning to do roughly the same.
-- Phil
On Oct 3, 2013 12:07 PM, Collins, Graham coll...@navcanada.ca wrote
My goal is just to slow down any external thermal
transients so the oven loop has time to react gracefully.
Are you sure it is not thermal mass that needs to be increased and
not just insulation?
Phil
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The nearest data I can find is Vectron C4550 datasheet which is not
very helpful.
Does anyone have the spec. for the 63.8976 ocxo?
thanks
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Has anyone read this?
The high-precision user is going to be thrown under the bus because
we are the most difficult to accommodate (technically) and don’t have
a high profile nor are perceived as significant enough to accommodate.
The boss in this household has added
What he forgot was that the patient will have no concept of time in
the real world and frequently be late for any event including his
own funeral!
Phil
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Looking at the specific heat of metals:
http://www.engineeringtoolbox.com/specific-heat-metals-d_152.html
Wouldn't Beryllium be better instead of aluminium?
I could foresee a few problems though eg machining holes at home,
never mind where to get a block from.
Phil
seem to have
much laying around to be familiar with it)
As an aside, cuts from copper swarf can take a long time to heal.
Sorry if I've lowered the tone of a good list.
Phil
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Even defining when the sand timer is done is not a real
simple thing. Waiting for that very last particle to drop may
not be the best approach.
Bob
You could measure of the weight of the hourglass.
Phil
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Didn't some of the 5345 or 5328 manuals have schematics for the 10544. I
have no idea if it's in the on-line manuals but I recall seeing the
timebases in some.
Phil
- Original Message -
From: Bruce Griffiths bruce.griffi...@xtra.co.nz
To: Discussion of precise time and frequency
on epay!
Phil
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space based threats. That could conceivably render most of
the satellites useless. I would think that ground based backup of all
satellite systems would be mandatory.
Phil
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- Original Message -
From: David Smith w...@msn.com
To: Discussion of precise time and frequency measurement
time-nuts@febo.com
Sent: Thursday, November 12, 2009 2:31 AM
Subject: Re: [time-nuts] Rubidium standard
I'm new to the list. Having said that, I ran across a webpage from a
the equipment are ok.
Here is a super interesting short video of men inspecting live hi-voltage
power lines.
Just like that bird on the wire. http://www.youtube.com/watch?v=9tzga6qAaBA
Phil
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some 10-foot less in
elevation; however, various antennas and weather sensors are forty feet high
or still 30 foot higher than the ridge.
Phil
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- Original Message -
From: Poul-Henning Kamp p...@phk.freebsd.dk
To: Discussion of precise time and frequency measurement
time-nuts@febo.com
Sent: Monday, September 07, 2009 5:43 PM
Subject: Re: [time-nuts] HP 5071A Electron Multiplier of Cesium Beam Tube
In message
http://tron.aps.org/publications/apsnews/200203/loader.cfm?csModule=security/getfilepageid=14965
look at Page 2
If it is a direct quote, public domain ?
Phil
- Original Message -
From: J. Forster j...@quik.com
To: Discussion of precise time and frequency measurement
time-nuts
. There is a rubber o-ring seal that can be
rather tight but that is the only thing other than the 4 external screws
holding it together.
Phil
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- Original Message -
From: Peter Putnam pico.2...@sbcglobal.net
To: Time Nuts time-nuts@febo.com
Sent: Friday, September 04, 2009 1:30 AM
Subject: [time-nuts] OCXO sensitive to gravitational effects
You have all been a bit stingy with your gravitational inputs on the hp
18011
The Bidder Code letters also changes, it is not fixed on a given users id.
- Original Message -
From: Rex r...@sonic.net
To: Discussion of precise time and frequency measurement
time-nuts@febo.com
Sent: Tuesday, September 01, 2009 11:40 PM
Subject: Re: [time-nuts] Finding out who
. It's
not the same place anymore.
Doesn't apply to everything but if you find an item that tickles your fancy,
take the model and google it, you just may find it elsewhere cheaper or with
someone you could negotiate with.
Phil
- Original Message -
From: J. Forster j...@quik.com
are not used in the output on most UPS's any more, most use power FET's and
with it's lower resistance, doesn't dissipate as much heat. Running in a
lost power state is not the issue; it's when the power comes back on and
starts charging the batteries.
Phil
general replacement transistors rather than the
originals in direct coupled amplifiers.
http://store.americanmicrosemiconductor.com/2n1701.html
Phil
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in stock. It's readily available.
Phil
- Original Message -
From: Jim Palfreyman jim77...@gmail.com
To: Discussion of precise time and frequency measurement
time-nuts@febo.com
Sent: Monday, August 10, 2009 10:36 PM
Subject: Re: [time-nuts] HP 106B quartz frequency standard...the story
would
configure the com port with the data on boot as a mouse and the curser
bounced all over the screen. That program just modifies a registry entry. It
is executed on a command line.
Phil
- Original Message -
From: Ulrich Bangert df...@ulrich-bangert.de
To: 'Discussion of precise
application!
I though it worth the gamble for the cheap price.
Phil
- Original Message -
From: Demian Martin demian...@yahoo.com
To: time-nuts@febo.com
Sent: Thursday, July 23, 2009 3:48 AM
Subject: Re: [time-nuts] EFRATOM MFTD-AC4 FREQUENCY REFERENCE
DISTRIBUTIONAMP - update
I
Demain,
Apparently, in my rush I misread that data sheet. If it can't be easily
modified, some of the guys were offering a decent distribution board at a
reasonable price. I too need a sine wave rather than square. It still makes
one heck of a nice housing so nothing is lost.
Phil
Where windoz incorrectly detects a serial device that is connected to your
computer on boot.
check this out: http://support.microsoft.com/kb/819036
- Original Message -
From: Robert Darlington rdarling...@gmail.com
To: Discussion of precise time and frequency measurement
A few other reasons that come into play for not shipping outside of USA,
(1) With respect to items a seller may purchase from Federal auctions or a
company such as Honeywell that is under federal contract, the general
terms of the sale/auction is that the items will not be exported. Certainly,
isolated the problem to a board or section?
Phil
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for that, Phil. I have located a listing for a Fluke 203A manual,
but don't know yet if it's for the Fluke/Montronics Frequency Comparator
or something else from Fluke before they acquired Montronics. Waiting for
a reply from the vendor. If it's the right manual, I'll buy it rather
than
Advice ?
Dave M's question about that manual reminded me of a bunch of this old
stuff I have just occupying space. I have an old Fluke 207 VLF
Receiver/Comparator (I think 207-5) complete with manual/schematics as well
as the Fluke 103A with manual/schematics.
They haven't been hooked up or
to
install. I have 30 some servers and switching all to FreeBSD.
Phil
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for
some time.
Phil
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- Original Message -
From: Magnus Danielson mag...@rubidium.dyndns.org
To: Discussion of precise time and frequency measurement
time-nuts@febo.com
Sent: Tuesday, March 17, 2009 7:36 PM
Subject: Re: [time-nuts] Loran-C French Clocks
Arnold,
Arnold Tibus skrev:
Magnus and all,
Magnus,
The most comprehensive collection of time offset data and reference to each
countries latest laws might be found at:
http://www.twinsun.com/tz/tz-link.htm
Phil
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- Original Message -
From: Magnus Danielson mag...@rubidium.dyndns.org
To: Discussion of precise time and frequency measurement
time-nuts@febo.com
Sent: Wednesday, March 18, 2009 7:20 PM
Subject: Re: [time-nuts] Time offset
Phil,
phil skrev:
Magnus,
The most comprehensive
situations.
As a general rule, servicing electronics, or about anything is simply a
logic and deduction process. Basic knowledge of the components, theory of
operation, and of the circuit under test is still necessary.
Phil
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- Original Message -
From: Rick Harold [EMAIL PROTECTED]
To: time-nuts@febo.com
Sent: Sunday, November 23, 2008 9:34 PM
Subject: [time-nuts] position determination over short distance
All,
I'm planning doing some experiments in distance measurement. They don't
deal with atomic
??
bye,
Said
If the oscillator was placed inside a separate, locally created magnetic
field, would that stop or lessen that jump?
Phil
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, unless it was upgraded just prior to being obsoleted it
will have the gps week rollover problem. Time and frequency will be fine but
date and week will be wrong.
Phil
- Original Message -
From: John Miles [EMAIL PROTECTED]
To: Discussion of precise time and frequency measurement
time-nuts
Might it be possible a word of caution is in order?
Was not a downconverter used with the old GOES (L-band) Truetime satellite
equipment. That would not be the same as the down converters used on gps.
Just a thought.
Phil
- Original Message -
From: Scott McGrath [EMAIL PROTECTED
on ebay.
Phil
- Original Message -
From: Don E. Wisdom [EMAIL PROTECTED]
To: Discussion of precise time and frequency measurement
time-nuts@febo.com
Sent: Sunday, October 05, 2008 12:43 AM
Subject: Re: [time-nuts] Truetime Time server NTS-100 Downconverter
infowanted
Phil,
Its the GPS
- Original Message -
From: Neon John [EMAIL PROTECTED]
To: Discussion of precise time and frequency measurement
time-nuts@febo.com
Sent: Tuesday, August 26, 2008 1:10 PM
Subject: Re: [time-nuts] While we're discussing backups...
On Tue, 26 Aug 2008 03:34:11 +, Mark Sims [EMAIL
- Original Message -
From: Neon John [EMAIL PROTECTED]
To: Discussion of precise time and frequency measurement
time-nuts@febo.com
Sent: Tuesday, August 26, 2008 7:55 PM
Subject: Re: [time-nuts] While we're discussing backups...
On Tue, 26 Aug 2008 14:04:07 -0400, phil [EMAIL
a new thread on the better/best merits/design of
temperature control.
Makes it rather difficult to follow a thread as the subject has changed.
Respectfully
Phil
- Original Message -
From: Mike Monett [EMAIL PROTECTED]
To: time-nuts@febo.com
Sent: Friday, August 22, 2008 9:20 AM
Subject
- Original Message -
From: Magnus Danielson [EMAIL PROTECTED]
To: Discussion of precise time and frequency measurement
time-nuts@febo.com
Sent: Friday, August 22, 2008 5:25 PM
Subject: Re: [time-nuts] Restoring GR 1120-AB Frequency Standard
phil wrote:
Gentlemen,
Original poster
- Original Message -
From: phil [EMAIL PROTECTED]
To: Discussion of precise time and frequency measurement
time-nuts@febo.com
Sent: Wednesday, August 20, 2008 2:15 AM
Subject: Re: [time-nuts] FW: IIMorrow GPS units non-functional since Sunday
- Original Message -
From
there is something
between it and the heater. Though I had one, I don't think I ever looked
inside the thing.
I have seen some similar units (I think what you have) that use an almost
paper thin column of mercury. I would guess that is how they can achieve the
fine resolution/precision.
Phil
- Original
Although English is the worlds standard language for pilots.
intelligent perhaps, but not all, we put two pilots away for embezzling,
one was buying planes to rent and putting them in his name rather than the
company name. That's not very intelligent !
- Original Message -
From: Jim
Russ,
Also could it be a cold solder joint on the tubes connections, possibly look
good but have a high resistance. That could account for an intermittent as
you are describing. Sometimes we overlook the simplest of things.
Phil
- Original Message -
From: phil [EMAIL PROTECTED
. Seems like it was driven by 1
KC. My old standard was complete, a 5 or 6 foot rack and came out of an old
Hamerland Radio plant.
phil
- Original Message -
From: [EMAIL PROTECTED]
To: time-nuts@febo.com
Cc: [EMAIL PROTECTED]
Sent: Wednesday, August 20, 2008 4:16 AM
Subject: Re: [time-nuts
Bruce,
nuf said, in that case it's the expansion of toluene, not the mercury. Can
easily see how that would work, actually rather ingenious. As always, more
than one way to do something.
Thanks, Phil
- Original Message -
From: Bruce Griffiths [EMAIL PROTECTED]
To: Discussion
to talk to it. I'm not 100 percent on pinouts
but tried enough combinations that I should have hit on it !
Any help would be appreciated
Thanks,
Phil
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For Info:
Importing 2 TBolts into the UK costs $29.11 duties and fees.
Phil G4FXY
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Why an 8082A, that's a 250MHz unit. Would not an 8015A 50MHz work. I think
it's the same only with a lower bandwidth.
- Original Message -
From: wje [EMAIL PROTECTED]
To: Discussion of precise time and frequency measurement
time-nuts@febo.com
Sent: Thursday, June 19, 2008 9:01 AM
I Didn't look at pulse bandwidth. 2.4ns compared to 10 ns
Other than that about the same unit.
- Original Message -
From: phil [EMAIL PROTECTED]
To: Discussion of precise time and frequency measurement
time-nuts@febo.com
Sent: Thursday, June 19, 2008 9:48 AM
Subject: Re: [time-nuts
large pull-out schematics.
Phil
- Original Message -
From: WB6BNQ [EMAIL PROTECTED]
To: Discussion of precise time and frequency measurement
time-nuts@febo.com
Sent: Tuesday, June 17, 2008 2:14 AM
Subject: Re: [time-nuts] Phil's Fluke Monotronics equipment
Phil,
Would it be possible
Subject: Re: [time-nuts] Phil's Fluke Monotronics equipment
Phil,
My unit is a model 100A and is in working condition. So no hurry in that
regard. I am not sure what the difference is between it and the 103,
although I
think they may be similar.
The model 100A is a simple panel with the 2
Monotronics equipment
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
Fluke comparator, and a Motorola standard we
used with it. Just wondered if perhaps I should put it on ebay or is it a
waste of time.
Phil
- Original Message -
From: Bob Martinson [EMAIL PROTECTED]
To: Discussion of precise time and frequency measurement
time-nuts@febo.com
Sent: Tuesday
I know you guys like to drill holes through hairs, but
As I follow the discussions on merits of 50/75 ohm cable, cable length
changing with ambient temperature, tuning cable to a fraction of wavelength,
power supply noise etc.
Does not the weakest link determine it's best accuracy? If
- Original Message -
From: Bruce Griffiths [EMAIL PROTECTED]
To: Discussion of precise time and frequency measurement
time-nuts@febo.com
Sent: Saturday, June 14, 2008 2:16 AM
Subject: Re: [time-nuts] Non-impedance matched antenna cables
phil wrote:
I know you guys like to drill
- Original Message -
From: [EMAIL PROTECTED]
To: Discussion of precise time and frequency measurement
time-nuts@febo.com; time-nuts@febo.com
Sent: Monday, May 19, 2008 3:49 AM
Subject: Re: [time-nuts] Trimble Thunderbolt EOL
While the mini-T is obviously not the same, the -E version
about half size to that trimble
photo. It's a good unit, at least I've been happy with them. I'm sure you
can always do better though.
Phil
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Wobble. Some believe it is the
cause of the earthquakes rather than the effect. This is an extremely
interesting subject. I haven't seen anything on the present quake but it
usually takes a while for anything to be published.
You might find more searching Chandler Wobble
Phil
as to how to get the Tbolt to
display a more correct altitude?
Thanks!
Mike Baker
WA4HFR
Micanopy, FL
For what it's worth, I have two of these units and they are horrible on
altitude but otherwise seem to be ok.
Just a thought !
Phil
___
time
http://www.trimble.com/tmg_thunderbolt_ts.asp?Nav=Collection-2356
Link to the manual (ThunderBoltBook2003.pdf about 1 meg in size)
There is a section of the manual that explains and guides you through the
monitor program.
Phil
- Original Message -
From: Ken Winterling [EMAIL
don't have the only web colors checked. That color picker box will
then show the RGB values as well as the hex value.
Phil
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do it, you have to sample printer output and match (tweak), to even to
calibrate the printer using calibration standards. This gets you very close
unless you have a super cheap scanner and printer and even with cheap
hardware this allows you to accomplish the intended results.
Phil
. To that end, I'm looking at a LT1761 for the +12v
OSC voltage and an LT3080
for the 24v heater supply..
You might try ebay for a +24 / +12 volt switching supply, problem/s solved.
I have bought them for as little as 3 bucks.
Phil
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- Original Message -
From: Bruce Griffiths [EMAIL PROTECTED]
To: Discussion of precise time and frequency measurement
time-nuts@febo.com
Sent: Thursday, December 13, 2007 6:08 PM
Subject: Re: [time-nuts] need recomendation for a portable 10mhz reference
oscilator
Magnus Danielson
scoured Google
and the data sheet is as close as I have found.
Many Thanks,
Phil
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it is a variation on nmea, but
that remains to be seen.
Phil
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Hi Tim (swingbyte)
The continuous sends continue even with computer off and ADSL unplugged.
I've mailed ISP to see if they can sort it out.
I'm getting continuous mail delivery failed: returning message to sender
Sorry about all this.
Phil
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Hi
The link to replace the broken one is
http://www.k3pgp.org/pts160.htm
Phil
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); SAEximRunCond expanded to false
Errors-To: [EMAIL PROTECTED] RETRY
Just to let anyone interested know,
I've uploaded an M100.pdf to Ko4BB.com.
Phil
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); SAEximRunCond expanded to false
Errors-To: [EMAIL PROTECTED] RETRY
John
It's probably still in the upload section
Phil G4FXY
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); SAEximRunCond expanded to false
Errors-To: [EMAIL PROTECTED] RETRY
The complete article is available at
http://www.hparchive.com/Journals/Low-Resolution/HPJ-1981-03-Low-
Resolution.pdf
(4.5 MB)
http://www.hparchive.com/Journals/HPJ-1981-03.pdf (38.2 MB)
previously referenced by
/tvb
at 20MHz and 100Bt has one at 125MHz.
If the entire network could be locked to a master clock, say in one
hub, how would the repeaters be locked?
A modified hub presumably? I will continue reading and experimenting
(wrecking!) on my home network.
Phil G4FXY
bent by other users while experimenting.
Phil
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); SAEximRunCond expanded to false
Errors-To: [EMAIL PROTECTED] RETRY
cont.
The broadcast address 255.255.255.255 ip4 or whatever in ip6 could
send the timestamp (one way)
and the two way could be used for calibration.
Now to try it out somehow.
Phil
with my findings of ignores 10MHz (no Rb)
Phil
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Add me in for one unit
Cheers all
Phil G4fxy
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Finally found my notes (hint: look on both sides of the page!)
24V 410mA
RS485 / 1PPS socket (F)
pin 1 +ve going 1PPS ~4v
pin 6 -ve going 1PPS ~4v
pulses ~4mS wide
data (same connector)
pin 9 and 5
pin 9 and gnd works for serial input to a terminal 9600 8 N 1
my 15MHz was low to start with
is to take it to pieces)
Phil G4FXY
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Briefly:
Leave it running for at least 24hrs.
The 15MHz will slowly get on freq.
Countup is available on 1pps socket.
more when I have time
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I have one of these units and after various trial and error seem to
have lock and working with stable 15MHz output.
I will look up my notes and post more. (assuming I've got this right)
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