Very Nice!!
What is mounted on top of the 10811?
Joe
-Original Message-
From: time-nuts [mailto:time-nuts-boun...@febo.com] On Behalf Of
cdel...@juno.com
Sent: Saturday, June 09, 2018 4:58 PM
To: time-nuts@febo.com
Subject: [time-nuts] HP5065C or the 5065Jr.
Hi,
Thought I'd share some
Don,
I am very pleased with the performance of my CITIZEN Eco-Drive SKYHAWK. It can
receive WWVB (USA), JJY (Japan), or DCF77 (Germany). I am convinced it is
accurate to within 1 second at all times. It is a 'Blue Angels' watch, part of
the NaviHawk series I think.
I agree with Bert.
I remember an issue with another OCXO where the output coupling capacitor
connection failed and outputs were low. Opening the OCXO and resoldering the
connection returned the output to normal. Morion I think.
I've never heard of this issue with the Trimble but not to say
Any idea what they are selling for at this time?
I see that some sold for the BIN price of $349.99 up until June 20. After
that, 'Offer Accepted' occurred up through October 5, with a BIN price now of
$649.99, all plus $40 shipping.
Joe
-Original Message-
From: time-nuts
I had a T-Bolt 'failure' when my -12V supply died.
I am aware of another event on the list when the solder connection at the -12V
connector to the t-Bolt failed.
Make sure the -12V is reaching the PCB for the T-Bolt.
Hope this helps.
Joe
-Original Message-
From: time-nuts
Corby,
Is it a 'pressure' seal or a 'vacuum' seal?
Vacuum should be much easier to achieve.
Joe
-Original Message-
From: time-nuts [mailto:time-nuts-boun...@febo.com] On Behalf Of
cdel...@juno.com
Sent: Thursday, May 18, 2017 3:34 PM
To: time-nuts@febo.com
Subject: [time-nuts]
Mark,
I did not find a datasheet specific for your number but I did find a data sheet
for the S29JL032H90TFI210, if that might be what you have. If so, I probably
have a programmer and socket adapter that can read and program it. I'll see if
I can find it this week.
Happy to help if I can.
Dave,
The 'value' of the unit may be that of the 'parts'. Are there any options?
I have nine 5061A'a and B's and it has been my experience that if it has the
'High Performance Cs Tube', option 004, it likely has a dead tube.
If it has option 001, 002, or 003 (clock, battery backup, or both),
Skip,
I've rebuilt the NiCd battery packs with tabbed half D NiCd cells that are
about $5 each (with tabs, shipped) and it takes 20 of them and some time to
disassemble the pack and solder the new cells together. They will eventually
die and you will have to replace them again. The half D
Dick,
The most reasonable place I was able to find to get these connectors (new) was
Galco.
https://www.galco.com/shop/Circular-Connectors
Hope this helps.
Joe
-Original Message-
From: time-nuts [mailto:time-nuts-boun...@febo.com] On Behalf Of
cdel...@juno.com
Sent: Sunday, January
Christopher,
Enjoyed the pictures.
You might want to look at these items on theBay.
381408412092
311736541103
I've had the same issue and broke down and bought a set of these small nut
drivers.
Good luck.
Joe
-Original Message-
From: time-nuts [mailto:time-nuts-boun...@febo.com]
Oh never mind.
MAJOR BF!!!
How I 'morphed' S30 into S05 I can't explain.
I suspect it is a 74S30 but I can't prove it.
Sorry.
Joe
-Original Message-
From: time-nuts [mailto:time-nuts-boun...@febo.com] On Behalf Of J. L. Trantham
Sent: Friday, October 28, 2016 5:57 PM
To: 'Discussion
Sorry.
74S05D.
Joe
-Original Message-
From: time-nuts [mailto:time-nuts-boun...@febo.com] On Behalf Of J. L. Trantham
Sent: Friday, October 28, 2016 5:50 PM
To: 'Tom Miller'; 'Discussion of precise time and frequency measurement'
Subject: Re: [time-nuts] Opening an Isotemp OCXO
I have
I have emailed Peter separately earlier today.
The top side marking of the chip appears to indicate it is a TI 74LS05D.
The datasheet is here:
http://www.ti.com/lit/ds/symlink/sn74ls05.pdf
If it is indeed a 'HEX Inverter', perhaps another 'channel' can be wired in
place to see if it would
Pete,
I'm not familiar with your OCXO but I found one shown on 'theBay' (item
261920574725) and it appeared to have an option for 'mounting screws', four of
them, on the bottom. Interestingly, the 'link' to the datasheet for that unit
did not show threads for mounting screws.
If your unit
Another option for the UT+ (not sure it's applicable to the M12M) is to
remove/disconnect a SMT resistor that connects the (+) terminal of the
rechargeable onboard battery to pin 6 (IIRC) and use a non-rechargeable battery
of the same form factor. I've done that for one of my receivers and
Ulrich,
The connectors can be obtained reasonably inexpensively from Galco.
http://www.galco.com/shop/Circular-Connectors
They are a 3 pin circular connector, consisting of three parts, that are
purchased as an 'insert', 'shell', and 'clamp', IIRC. I don't have the part
numbers in front of
repairing it
as near as I can tell especially since replacement receivers abound from a list
member and on Evil-Bay at reasonable prices
Dave
NR1DX
On 2/25/2016 9:15 AM, J. L. Trantham wrote:
> Joe,
>
> I recently had a problem with my Z3816A where it reported an erroneous date,
&g
Joe,
I recently had a problem with my Z3816A where it reported an erroneous date,
2035 IIRC. However, the time was accurate.
It was only tracking 4 sats and the signal strengths were low. My TBolt was
tracking 8 sats with good signal strength. My antenna feeds a Symmetricom
58536A 4 way
I purchased three via PayPal about a month ago and they arrived promptly.
Joe
-Original Message-
From: time-nuts [mailto:time-nuts-boun...@febo.com] On Behalf Of Robert
Watzlavick
Sent: Saturday, February 20, 2016 2:17 PM
To: Discussion of precise time and frequency measurement
Subject:
I don't know if this related or not but my Z3816A (with Symmetricom SatStat) is
displaying the proper time but a date of 12 Sep 2035, tracking PRN 1, 7, 17,
19, 28 and 30.
My TBolt (with Lady Heather) is displaying proper time and date, tracking 1, 7,
11, 17, 19, 28 and 30
I 'cycled' power on
Jim/Anna,
I took the liberty of adding 'HP 5065A' to the subject line to help others.
Sounds like a nice 'find'. There are many experts here regarding the 5065A.
I'm a 'novice'.
There are several manuals on the net. You can find one manual here:
Bert,
I'm suspect you already know this but, depending on the age of the
installation, the outlets might be 'daisy chained' rather than 'home-runs'. If
'daisy chained' and there has been any renovations to the home, the abandoned
outlets may have been sheet-rocked over.
Good luck.
Joe
Corby,
I have two 5065A's with the battery back-up feature (that I have removed the
fuse from to, hopefully, preserve longevity of the battery pack), one 'white
face' without the clock and one 'black face' with the LED clock. I'll be happy
to open one (or both) and inspect the battery pack if
] [Bulk] 10811 unsoldered fuse
>
> That probably is an original thermal cutout. It matches ones I have
> found when repairing 10811As.
>
> David
>
>
> On 10/20/15 7:59 AM, J. L. Trantham wrote:
> > Dimitri,
> >
> > That clearly is not the 'original' thermal
/20/15 7:59 AM, J. L. Trantham wrote:
> Dimitri,
>
> That clearly is not the 'original' thermal fuse that I found in my 10811.
> Mine was a small, axial lead, cylindrical part.
>
> It looks like someone substituted a different part (is that a fuse or
> a
> cutoff?) and did
Gerhard,
Don't know if it would help much in your ultimate plan but the concept has been
done before as the 53132-60011 and 53132-60016 Optional Time Base Boards for
the 53132A counters. These boards will accommodate either an Isotemp OCXO33-46
(HP 1813-0931) OCXO for OPT 001, or either of
Dimitri,
That clearly is not the 'original' thermal fuse that I found in my 10811.
Mine was a small, axial lead, cylindrical part.
It looks like someone substituted a different part (is that a fuse or a
cutoff?) and did a poor job soldering. I think the temperature is correct
though. I'd have
Chris,
I'm not in my shop right now but I think it is a standard cable. Don't recall
needing a 'null modem' cable for the TBolt. I needed one for the Z3816A.
Joe
-Original Message-
From: time-nuts [mailto:time-nuts-boun...@febo.com] On Behalf Of Chris Waldrup
Sent: Sunday, July 26,
Interestingly, the time is 23:59:60 but the UTC ofs is still 16.
I guess it increments to 17 at the end of that operation, i.e., at 00:00:00.
Joe
-Original Message-
From: time-nuts [mailto:time-nuts-boun...@febo.com] On Behalf Of Scott Newell
Sent: Tuesday, June 30, 2015 7:29 PM
To:
Looks like another shipment for those that might have missed them before.
Item 221777430088
No connection to seller except satisfied customer.
Joe
___
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to
On 5/20/2015 5:47 AM, J. L. Trantham wrote:
Looks like another shipment for those that might have missed them before.
Item 221777430088
No connection to seller except satisfied customer.
Joe
___
time-nuts mailing list -- time-nuts
I recently obtained a 53132A and added the HP Opt 010 High Stability Time
Base option with a 10811 variant OCXO.
I left it on for over a week and it, ultimately, seemed to slow down in its
drift, with the displayed frequency, as it 'read' my GPSDO, slowly
decreasing, suggesting that the Time
.
Please add these values to your schematics.
I'll see if I can make a modification to the schematic and upload the details
to Didier's site.
Hope this helps.
Joe
-Original Message-
From: time-nuts [mailto:time-nuts-boun...@febo.com] On Behalf Of J. L. Trantham
Sent: Sunday, April 19, 2015 3
some 'tutoring' on how to make
useful/helpful measurements.
Thanks again.
Joe
-Original Message-
From: Charles Steinmetz [mailto:csteinm...@yandex.com]
Sent: Monday, May 04, 2015 11:00 AM
To: Discussion of precise time and frequency measurement
Cc: J. L. Trantham
Subject: Re: [time-nuts
Base Options for 53132A
Hi Joe,
You might upload them to KO4BB.com with a short note on what they are. There is
a 53132 directory there.
Regards,
Tom
- Original Message -
From: J. L. Trantham jlt...@att.net
To: 'Discussion of precise time and frequency measurement'
time-nuts@febo.com
-
From: time-nuts [mailto:time-nuts-boun...@febo.com] On Behalf Of J. L. Trantham
Sent: Monday, April 13, 2015 7:04 AM
To: 'Discussion of precise time and frequency measurement'
Subject: [Bulk] Re: [time-nuts] [Bulk] Re: Ultra High Stability Time Base
Options for 53132A
Fuzzy page 13 is the 53132
Fuzzy page 13 is the 53132-60011, with the extra components not found on the
53132-60016, which is on page 45 and much clearer. It is an LM361M and is on
both boards.
Now that I have the 53132-60011 board, I plan to start with page 45 and
're-draw' a clear page 13.
Joe
-Original
Tom,
Unfortunately, it would appear that there is an 'older' version of circuits
(?CLIP as well).
My Osc Support Board for the Opt 010 version of the 10811 is a 53132-60011
which is populated with a number of components that are not present on the
53132-60016 board, the board that seems to be
process.
Bob
On Apr 11, 2015, at 8:01 AM, J. L. Trantham jlt...@att.net wrote:
Has anyone done any testing/comparison of the three aftermarket UHS
Time Base Options for the 53132A that are on theBay?
One is from Poland: 111643536543
Two are from China: 181698758773
Has anyone done any testing/comparison of the three aftermarket UHS Time
Base Options for the 53132A that are on theBay?
One is from Poland: 111643536543
Two are from China: 181698758773 and 331420737911
All use the Morion MV89A and all appear to be 'plug and play' with the
automated
I have a 'new to me' standard 53132A, S/N 3736Ax, Firmware Ver. 3703,
with a P/N 0950-2496 power supply, that I would like to add an HP Opt 010 HS
Oven OCXO reference to that consists of a 10811-60160 OCXO mounted on a
53132-60011 Osc Support Board.
I am confused about how to do this based
Did the oven 'controller' fail and 'over cook' the lamp?
Sort of looks like what happened to my 5065A when the heater turned on and
never turned off.
Joe
-Original Message-
From: time-nuts [mailto:time-nuts-boun...@febo.com] On Behalf Of Jürg Kögel
Sent: Sunday, February 22, 2015 9:44
Klaus,
It would appear that you are still acquiring sats.
I would not reach any conclusions about function until the survey is
'complete'. Currently, it is suspended.
I suspect it all goes back to a poor set of signals from your GPS antenna.
I don't know anything about how these units
For a man with two watches, he's not really sure what time it is...
Sorry. Couldn't resist.
I like the idea of having multiple GPSO's to compare with each other. If they
all agree, then likely, all are accurate.
The next level would be a CS or other primary standard.
I would favor
Forgot to mention to be sure and check the front panel bulbs. Frequently they
burn out and you get no indication when everything is OK.
Good luck.
Joe
-Original Message-
From: time-nuts [mailto:time-nuts-boun...@febo.com] On Behalf Of J. L. Trantham
Sent: Thursday, November 06, 2014 8
I agree. Plug it in and see what happens although I would probably disconnect
and remove the NiCd batteries and inspect for and clean up any leakage issues.
I would also remove A2, the battery charger board, until initial tests are
completed. A2 is the center board seen from the bottom.
I
3$?
Or is that too much?
Joe
-Original Message-
From: time-nuts [mailto:time-nuts-boun...@febo.com] On Behalf Of xaos
Sent: Thursday, November 06, 2014 12:10 PM
To: Discussion of precise time and frequency measurement
Subject: [Bulk] [time-nuts] There seems to be something missing from
Wayne,
Forgot to mention this on my first post.
On the front panel:
1. Set the MODE to 'CS OFF'
2. Set OSC FREQUENCY five turn pot to '250' (not COARSE).
3. Set MOD to 'ON'.
4. Set C FIELD to whatever the front door says it should be.
5. Set CIRCUIT CHECK to 'ION PUMP I'.
Plug it in and
Being lazy, I used two aluminum angle brackets, one 'on top' and one 'on the
bottom', mounted to a 19 rack, spaced vertically so that a Z3816A would just
fit between them. Then I used the Z3816A's mounting screws to 'mark' the
brackets, drilled 8 holes, 'tapped' the holes so that the threads
The original fuse, per the 10811 manual, is P/N 10811-80008 which Keysight
lists as obsolete.
The part description lists it as 'Fuse-Thermal 115C 1.0A 250V', which I
interpret to be 115 degrees C.
Hope this helps.
Joe
-Original Message-
From: time-nuts
Ed,
If I have the math correct, and you are measuring the voltage to ground
through a 10 MegOhm input impedance DMM, you have about 7.5 nA beam current
which seems a bit low compared to what I remember of the HP 5061A. However,
you still have a definable 'peak' with a 'peak to valley' voltage of
WinXP.
Joe
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
Behalf Of Larry McDavid
Sent: Saturday, April 26, 2014 12:29 PM
To: Time-Nuts Mail List
Subject: [time-nuts] SatStat on Windows 7
I just tried to run SatStat for the HP Z3801A on my new
Two other suggestions to open the can.
If you don't have a good 'suction' de-soldering station, you can try to
'wedge' some de-soldering braid in the seam to absorb the solder then
proceed as Tom suggests.
Also, if there is a way to 'grab' the can or the base, such as placing it in
a vise, you
I've never opened an OCXO but I have opened several sealed HV power supplies
used on HP 5061A and 5061B CS Standards. These supplies are mounted by four
6-32 screw studs which make for easy 'holding' in a lightly tightened vise.
I used a very focused hand held propane torch to go around the very
PM, J. L. Trantham jlt...@att.net wrote:
I recently acquired a Z3816A as a 'spare' and it does not work reliably.
The ALARM LED sometimes comes on and sometimes doesn't. Sometimes
it tracks and locks appropriately and other times it goes into
HOLDOVER. The main PCB is very dirty
.
I guess the other point is to get a better feel for the gunk. Does
soap and water do it. The fact that IPA didn't is interesting. It may be
oil based.
Good luck
Paul
WB8TSL/1
On Thu, Jan 23, 2014 at 9:41 PM, J. L. Trantham jlt...@att.net wrote:
I recently acquired a Z3816A as a 'spare
All,
I had already set the local time zone offset from GPS to '0' so I can't
address the success or not of the following commands if the 'offset' has not
been set to '0'.
:DIAG:GPS:UTC 1
Worked great to set the system from GPS time to UTC time. However, nothing
changed on the display until I
will be very dark in color. Use RO water and the tea will
be amber and taste better. Same with coffee... My RO system gets a lot use!
Larry
On 1/24/2014 9:12 AM, J. L. Trantham wrote:
Larry,
Thanks for the info. What is 'RO'? I am not familiar with that
abbreviation.
Joe
...
--
Best
I recently acquired a Z3816A as a 'spare' and it does not work reliably.
The ALARM LED sometimes comes on and sometimes doesn't. Sometimes it tracks
and locks appropriately and other times it goes into HOLDOVER. The main PCB
is very dirty and has the appearance that it has been in a humid and
I have not tried Trimble Studio yet but I use TBoltMon and Lady Heather,
both with good success.
I have down loaded two different files, of the ones linked to, and have a
question.
The link below takes me to a file labeled 'TrimbleStudio'. When I down load
it, archive it, right click it, select
:-).
Other radios including VHF Nav have similar issues.
Robert G8RPI
(CEng MRAeS)
From: J. L. Trantham jlt...@att.net
To: 'Discussion of precise time and frequency measurement'
time-nuts@febo.com
Sent: Friday, 10 January 2014, 1:53
Subject: Re: [time-nuts
I have had loss of GPS position on a 'hand-held' unit (Garmin GPSMAP 396)
when flying into PNS. When I switch to tower frequency (119.9 MHz) the unit
loses its position. I think it is related to some 'spur' related to the #1
Nav/Com (King KY197) being tuned to that frequency. If I replace the
Suspicious for a dead tube.
Joe
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
Behalf Of Tom Miller
Sent: Wednesday, October 02, 2013 9:54 PM
To: time-nuts@febo.com
Subject: [time-nuts] Fw: FTS 4060 Cesium Time Frequency Standard, Datum
Tom,
I defer to Bert on these issues. He is the one that shepherded me through
the learning curve about the HP units.
I have a couple of HP 5061A's with FTS tubes and I agree with Bert that they
seem to 'work better' than the HP tubes. However, I would think that the
ion pump current would at
Tom,
I don't have any FTS CS units but I would be suspicious that the 'ion pump
voltage' of '0' really means that the ion pump current is 0. And, if so, I
would be very suspicious of a dead HV supply or a shorted tube.
If it's anything like the HP units, you should be able to disconnect the CS
I have a collection of about 12 HP CS units, a mixture of 5061A's and
5061B's, 9 of which work, a couple of which I think might be able to be made
to work and the others 'parts' units. I would love to get a spare CS tube
or two to check these out.
I paid anywhere from about $300 to about $1500
Tom,
Don't forget the 'stand-by' generator to keep that pump running.
If you have natural gas and can 'plant' a propane tank in the ground, you
can get an automatic transfer, dual fuel, generator with an automatic
transfer switch to power the entire house and automatically put the
generator and
Looks like Colorado's version of a hurricane.
I'm pretty much convinced that, no matter what you have or where you live,
Mother Nature can pretty much take it all away from you without much warning
using wind, fire, water, and/or earth quake.
Life is about the journey, not the destination. All
John,
I, too, use one of those 26 dB antennas. It's been mounted outside on the
corner of my workshop for several years with no problems.
Joe
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
Behalf Of Robert Atkinson
Sent: Sunday, September
The 26 dB antenna I use has a 'vertical spiral' element under the 'egg
shaped dome'.
Joe
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
Behalf Of Jim Lux
Sent: Sunday, September 15, 2013 6:55 PM
To: time-nuts@febo.com
Subject: Re: [time-nuts]
There also appears to be a ton of 'genuine' Agilent 82357B's from China some
selling for under $155 with free shipping (to US and UK).
Quite the 'dump' of technology. I wonder if there is a USB 3.0 version
coming out soon?
Joe
-Original Message-
From: time-nuts-boun...@febo.com
Good point.
Joe
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
Behalf Of Jim Lux
Sent: Tuesday, September 10, 2013 10:28 AM
To: time-nuts@febo.com
Subject: Re: [time-nuts] 82357B GPIB USB from China
On 9/10/13 7:23 AM, J. L. Trantham wrote
John,
I'm 'late' to this thread as well but I find it very interesting.
In the aviation arena, there are 'storm scopes' that use NDB
(non-directional beacon) technology to establish the direction and spectral
analysis technology to establish the distance (based on the assumption that
the
There was a recent, fairly long, 'conversation' about the 3325A and
resurrecting it from a failed EPROM (and other problems, I think) that
ultimately was resolved by replacing the four Synertek 32K EPROM's with two
MCM68766 64K EPROM's. From what I have been told, it was a simple matter of
for me after 3 years of hunting someone finally
put a good set on Diddiers site.
Regards
Paul.
On Tue, Sep 3, 2013 at 7:38 PM, J. L. Trantham jlt...@att.net wrote:
There was a recent, fairly long, 'conversation' about the 3325A and
resurrecting it from a failed EPROM (and other problems, I think
supposed to replace.
(Nothing against Vetco - they are a great source of NTE components and are
local to me. They are just quoting what NTE claim.)
Orin.
On Wed, Jul 24, 2013 at 8:42 PM, J. L. Trantham jlt...@att.net wrote:
The 2N6429 crosses to an NTE123AP, in stock at Allied for $0.80
The 2N6429 crosses to an NTE123AP, in stock at Allied for $0.80.
http://www.alliedelec.com/search/productdetail.aspx?SKU=70214870mkwid=szEc5
jMBIpcrid=23468365337pkw=nte123appmt=epdv=cgclid=CKyzu9_cybgCFWYV7AodJA
sAWQ
Good luck.
Joe
-Original Message-
From: time-nuts-boun...@febo.com
Corby,
Have you asked Agilent? Or asked on the Agilent Forum?
I've had some luck there in the past finding obscure documents.
Good luck.
Joe
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
Behalf Of cdel...@juno.com
Sent: Friday, July 05,
I saw that. AMAZING!!!
Joe
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
Behalf Of cdel...@juno.com
Sent: Thursday, June 27, 2013 4:53 PM
To: time-nuts@febo.com
Subject: [time-nuts] HP5065A prices!!!
Late model HP5065A an the bay
Sorry for the interruption but what is 'PFC'?
Thanks.
Joe
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
Behalf Of Poul-Henning Kamp
Sent: Saturday, June 15, 2013 4:09 PM
To: Robert Atkinson; Discussion of precise time and frequency
: [time-nuts] HP and other equipment failure
Although off-topic here, the PFC (or power factor correction) is a switching
mode front-end used to correct the cos-phi of the otherwise capacitive load
that every switching mode power supply is for the mains.
On Sat, Jun 15, 2013 at 11:52 PM, J. L
Well, it 'killed' my two. The website for the manufacturer of mine (both
SkyScan, cheap from Sam's) stated that there was a problem with WWVB.
I'll keep an eye out for a replacement.
Joe
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
Behalf
Burt,
I saw that earlier.
I am hoping to find a wall clock.
I wonder what it is about the SkyScan clock that makes them fail. I doubt
they phase lock the signal but they might. I think all the data is AM
modulated, IIRC.
Thanks.
Joe
-Original Message-
From:
. I suspect that
they all use the same chips.
Bob
On Jun 14, 2013, at 12:05 PM, J. L. Trantham jlt...@att.net wrote:
Burt,
I saw that earlier.
I am hoping to find a wall clock.
I wonder what it is about the SkyScan clock that makes them fail. I
doubt they phase lock the signal
In a slightly different direction, are there any commercially available 'PSK
Compliant Atomic Clocks' out there for those of us used to looking at the
'correct time'?
Also, what, exactly, was the advantage of changing modulation formats? That
'killed' all the existing 'Atomic Clocks'?
I have
about how you sell it.
Regards
Paul
On Thu, Jun 13, 2013 at 10:32 AM, J. L. Trantham jlt...@att.net wrote:
In a slightly different direction, are there any commercially
available 'PSK Compliant Atomic Clocks' out there for those of us used
to looking at the 'correct time'?
Also, what
of precise time and frequency measurement
Subject: Re: [time-nuts] Spectracom 8170 Time of Day grief...(WWVB Clock)
On 6/13/2013 9:02 AM, J. L. Trantham wrote:
However, as a 'modern art' piece, I might have a chance. :^)
Joe
Like this?
http://www.rfcafe.com/references/electrical/images/Bob
So, probably means that it is 'flashing', on and off. :^).
Joe
So, it's been sitting there for a couple of hours before the Lock LED came
on.
Interestingly enough, I woke up (its 3am here) and I thought, Hmm wonder if
its locked.
I walked down stairs to the workshop and looked at the front
Mark,
I have been inside two different variants of the Ovenaire oscillators but
not the one you describe.
One was defective due to a low output amplitude, solved by changing a
resistor in the amplifier on the oscillator board, and the other was
defective by virtue of being off frequency,
Can you tell me what program will open the .SCH files?
Thanks.
Joe
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
Behalf Of paul swed
Sent: Monday, May 20, 2013 5:24 PM
To: paul swed; Time-nuts
Subject: [time-nuts] WWVB D-PSK-R updated 12 Mhz
up. There is a known failure mode in the power supplies
of the 89XX series. I will probably just do an exchange for a re-built
supply.
It looks like I will have a new project for next weekend!
Fred
On 5/19/2013 9:10 AM, J. L. Trantham wrote:
Good to hear.
I love it when magic happens
My guess is that there is a 'test case' that the unit (foam enclosed units
minus the metal case) is placed into that has a hole through which
adjustments can be made. Then, it is removed and installed in its 'final
resting place' before sealing the unit.
Joe
-Original Message-
From:
Fred,
Be careful about the 'tweaking'. It can become very addicting. Short of a
GPSDO, you'll always have to tweak from time to time. The problem is being
able to define what tolerance you are willing to accept and how often you
don't mind tweaking.
Otherwise, you never get any work done,
I forgot to mention in my earlier email, a +/- 25 Hz range for the OCXO is
fairly large. I have an OVENAIRE OCXO in an EIP 545A that has a range (by
20 turn pot) of about +/- 2.5 Hz.
I suspect you are adjusting a capacitor, not a pot.
Joe
-Original Message-
From:
Fred,
What I do is to apply the GPSDO to the trigger input of a scope and the
output of the OCXO to be adjusted to the vertical input of the scope. Set
the time base to something line 100 nSec or faster and watch the output of
the OCXO after it has warmed up for 30 minutes or so.
This is an
The OCXO is a 'double oven' 10811 and that is the serial number. I have a
'spare' and can probably find more information in my 'files' if needed.
Good luck.
Joe
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
Behalf Of Brooke Clarke
Sent:
Is this part of an HSI (horizontal situation indicator), ADI (attitude
director indicator), INS (inertial navigation system), or autopilot? Are
the bearings dust?
Sounds like fun to play with though. What do you plan to do with it?
Joe
-Original Message-
From:
Bert,
Sorry to hear that. He was very kind to help me with my first 'Shera Board'
with parts and helping to get it up and working with an HP 105B. I wrote a
note to his wife a couple of months ago.
I agree with your thoughts. He went out of his way to help a stranger and I
appreciate it.
Joe
If I am not mistaken (and I could be), the Lat/Long suggests that you are in
China. Is that correct?
Joe
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
Behalf Of Garren Davis
Sent: Monday, February 25, 2013 11:00 AM
To: Discussion of precise
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