somewhere indicates a lock.
http://www.ke5fx.com/heather/readme.htm
-=Bryan=-
From: time-nuts <time-nuts-boun...@febo.com> on behalf of Tom Koza
<wb6...@gmail.com>
Sent: April 19, 2018 1:47 PM
To: time-nuts@febo.com
Subject: [time-nuts] Introduc
Thanks, forgot I have a Jupiter-T (D-120?) in my parts box , on that note out
of the two Trimble vs Jupiter-T. I think the Jupiter has a jitter of around
15ns, not sure what the Jupiter-T specs but I believe 10-20ns.
-=Bryan=-
From: time-nuts <time-nuts-b
Which would be the preference as timing receiver Motorola Oncore or a Trimble
Resolution T ?
-=Bryan=-
From: time-nuts <time-nuts-boun...@febo.com> on behalf of Pete Stephenson
<p...@heypete.com>
Sent: January 26, 2018 12:48 PM
To: Paride Legovini
That is pretty slick. URL was truncated, this should work properly.
https://www.eevblog.com/forum/projects/led-display-for-hp-3457a-multimeter-i-did-it-)/
-=Bryan=-
From: time-nuts <time-nuts-boun...@febo.com> on behalf of cdel...@juno.com
<cdel...
BR
If you haven't already you may want to have a look at documentation available
on the K04BB web site for the 5680A, may luck out and get the serial port
working.
http://www.ko4bb.com/getsimple/index.php?id=manuals=02_GPS_Timing/FEI/FE-5680A
-=Bryan
Did the serial communication ever work?. There is so many variations of the
FE's that it's hard to know if it was even supported for that particular model
or option. I have one and it has a serial port, but does not respond to any
commands.
-=Bryan=-
From
the Keysight
standards lab in Melbourne Australia, with Peter Daly. Forum:
http://www.eevblog.com/...
-=Bryan=-
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Can second that, had a Tek 2465B scope with a faulty power supply. Only with
the help of others more experienced in these repairs it was found to be a
faulty opto-isolater that had degraded over time.
-=Bryan=-
From: time-nuts <time-nuts-boun...@febo.
Interesting video
https://www.youtube.com/watch?v=6m0xGwkYYy0
-=Bryan=-
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and follow the instructions there.
ttp://www.see.leeds.ac.uk/structure/dynamicearth/plates_move/active_tectonics/vlbi.htm>
(VLBI) and Satellite Laser
Ranging<http://www.see.leeds.ac.uk/structure/dynamicearth/plates_move/active_tectonics/slr1.htm>
(SLR)
All fascinating stuff
-=Bryan=-
_
How well would the Venus work as a receiver for a GPSDO project using the 1pps
output?
-=Bryan=-
From: time-nuts <time-nuts-boun...@febo.com> on behalf of Mark Sims
<hol...@hotmail.com>
Sent: May 10, 2017 8:03 AM
To: time-nuts@febo.com
Subject
-TL866CS-Programmer-6pcs-lot-/122478573676?hash=item1c844ab86c:g:hYwAAOSwtZJY-CTP
[cid:bdd0f56e-77c5-4d42-b15d-8a567ae837e1]
-=Bryan=-
From: time-nuts <time-nuts-boun...@febo.com> on behalf of Mark Sims
<hol...@hotmail.com>
Sent: May 8, 2017 2:45
GPS Monitor can be downloaded from my one drive account. Two files, not sure
which is which though as they are both GPS monitor.
https://1drv.ms/f/s!AmMj2HdT5zCUhLckfpNYGebG0Js-bw
-=Bryan=-
From: time-nuts <time-nuts-boun...@febo.com> on behalf of
garbage characters?
-=Bryan=-
From: time-nuts <time-nuts-boun...@febo.com> on behalf of Ed Armstrong
<eds_equipm...@verizon.net>
Sent: April 15, 2017 1:13 AM
To: Discussion of precise time and frequency measurement
Subject: [time-nuts] NTGS50AA No Serial
There is a pretty nice "How it Works" video on steam turbines. As Pete mentions
they use valving to control the speed of the turbines, interesting how they
reheat the steam for the high/medium/low stages.
https://youtu.be/SPg7hOxFItI
-=Bryan=-
sorry, what do you mean by "complete oscillator" have outnumbered loose
crystals?
-=Bryan=-
From: time-nuts <time-nuts-boun...@febo.com> on behalf of Richard (Rick)
Karlquist <rich...@karlquist.com>
Sent: March 12, 2017 4:38 PM
To: Disc
Disappearing or manufacturing just moving overseas?. Video at the bottom is
interesting, classic.
http://hackaday.com/2017/03/11/so-long-and-thanks-for-all-the-crystals/
-=Bryan=-
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Thanks Mark, /ro=0 did the trick. It did leave a "r" at the end of the
corrected date, but after a restart of LH it is now just displaying the date.
Thanks again.
-=Bryan=-
From: time-nuts <time-nuts-boun...@febo.com> on behalf of
Perhaps something just went wonky in my setup but just noticed that the date
that LH 5 (TSIP) is displaying with my Nortel is very wrong. Any idea how to
correct. Could have happened after I did a cold reset a couple weeks ago.
-=Bryan=-
___
time
Not a bad mini-review on Kicad (3 parts), explores some of the good and bad.
https://hackaday.com/2016/11/17/creating-a-pcb-in-everything-kicad-part-1/
-=Bryan=-
From: time-nuts <time-nuts-boun...@febo.com> on behalf of Peter Reilley
<
Wouldn't designing circuitry and PCB's be easier with 10Mhz vs 100Mhz? Maybe
not so much now but then.
-=Bryan=-
From: time-nuts <time-nuts-boun...@febo.com> on behalf of Charles Steinmetz
<csteinm...@yandex.com>
Sent: January 19, 2017 4:13 AM
T
Thanks Pete, I have a Jupiter-T hooked up right now and wanted to see how the
plot compares to your, unfortunately my antenna position is poor, so will be
interesting. How many hours did you plot for?
-=Bryan=-
From: time-nuts <time-nuts-bounces+bpl
How do you display the survey plot in LH? i.e. the keyboard commands
-=Bryan=-
From: time-nuts <time-nuts-boun...@febo.com> on behalf of Peter Reilley
<preilley_...@comcast.net>
Sent: January 7, 2017 9:54 AM
To: Discussion of precise time a
assigned?.
-=Bryan=-
From: time-nuts <time-nuts-boun...@febo.com> on behalf of Mark Sims
<hol...@hotmail.com>
Sent: December 19, 2016 8:57 PM
To: time-nuts@febo.com
Subject: [time-nuts] Lady Heather 5.0 and COFS/Jupiter-T Receiver
All the Zodiac message
a ground level north view on the 49th parallel would this option
give me better precision when it comes to frequency.
-=Bryan=-
From: time-nuts <time-nuts-boun...@febo.com> on behalf of Mark Sims
<hol...@hotmail.com>
Sent: December 19, 2016 8:57 PM
T
Mode". Is
this correct or is it stuck, as it still shows Survey Data 2 Hours in grey (2
hours was the value I set).
Cheers
-=Bryan=-
From: time-nuts <time-nuts-boun...@febo.com> on behalf of Mark Sims
<hol...@hotmail.com>
Sent: December 19, 2016
in between the switching.
-=Bryan=-
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of the heather.cfg was installed. You
should be able to read/write this copy. At least that was my experience during
installing.
-=Bryan=-
From: time-nuts <time-nuts-boun...@febo.com> on behalf of Arnold Tibus
<arnold.ti...@gmx.de>
Sent: December 11, 2
I think the designation "UCCM" actually applies to the Symmetricom GPSDO
boards. Since most of these tend to come salvaged from China, tongue in cheek I
suspect "Unusable, Crushed, Cr_p, Mangled"
Do the Trimble units report UCCM from the ser
Sorry, meant the ARM pin on the picdiv not the ARM MCU's
-=Bryan=-
From: time-nuts <time-nuts-boun...@febo.com> on behalf of Bob Camp
<kb...@n1k.org>
Sent: November 17, 2016 2:07 PM
To: Discussion of precise time and frequency measurement
Subjec
to find anything
in the datasheet.
-=Bryan=-
From: time-nuts <time-nuts-boun...@febo.com> on behalf of Tom Van Baak
<t...@leapsecond.com>
Sent: November 16, 2016 3:27 PM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nut
The author of PicDiv publishes the ASM code for his dividers. If fluent in
assembley(er) it's probably quite doable. Many of the examples have a ARM or
SYNC feature
http://www.leapsecond.com/pic/picdiv.htm
-=Bryan=-
From: time-nuts <time-nuts-b
By far the easiest method.
https://youtu.be/3jxSKaIRhAQ
-=Bryan=-
From: time-nuts <time-nuts-boun...@febo.com> on behalf of Scott Stobbe
<scott.j.sto...@gmail.com>
Sent: November 6, 2016 1:10 PM
To: Discussion of precise time and frequency
If the SMD is small enough I have found it easy to remove by just applying a
blob of solder to one end, this will quickly gap over to the other lead, and
the SMD component and solder ball just slides off the board. Only works on the
very small components though.
-=Bryan
Surprisingly the 852D+ which is a very cheap rework station is quite good.
Quite a few reviews on the EEVblog.
-=Bryan=-
From: time-nuts <time-nuts-boun...@febo.com> on behalf of Bob Stewart
<b...@evoria.net>
Sent: November 5, 2016 12:18 PM
To:
ojects out there that can take the NMEA statements and display
on a LCD, GLCD. I am sure you probably saw a few on the EEVblog forum.
-=Bryan=-
From: time-nuts <time-nuts-boun...@febo.com> on behalf of Giuseppe Marullo
<giuse...@marullo.it>
Sent: Oc
Yes sorry, you are right it is at RS232 levels.
-=Bryan=-
From: time-nuts <time-nuts-boun...@febo.com> on behalf of Mark Sims
<hol...@hotmail.com>
Sent: October 30, 2016 10:48 AM
To: time-nuts@febo.com
Subject: [time-nuts] Has anybody checked
lay. Once you receive your unit and connect it to
your pc you will (should) see a stream of NMEA commands from one of the RS232
ports.
Hope this helps. I unfortunately toasted mine, and was contemplating about
picking up another one.
-=Bryan=-
From: t
ude , ...,
GPS:SATellite:TRACking:INCLude?
GPS:SATellite:TRACking::ALL
Command Complete
UCCM-P >
p.s. Looking forward to the latest Lady Heather release.
-=Bryan=-
From: time-nuts <time-nuts-boun...@febo.com> on behalf of Mark Sims
<hol...@hotmail.com>
Sent
with the voltages that may be quoted. The Trimble's are NOT
12v. search Time-Nuts for more info
-=Bryan=-
From: time-nuts <time-nuts-boun...@febo.com> on behalf of Bob Camp
<kb...@n1k.org>
Sent: October 23, 2016 6:56 AM
To: Discussion of precise time and frequency
And this one to show how safe and well designed they are.
https://youtu.be/g-NQSNoWlZ4
-=Bryan=-
From: time-nuts <time-nuts-boun...@febo.com> on behalf of Pete Lancashire
<p...@petelancashire.com>
Sent: October 12, 2016 10:58 AM
To: Discussio
Found another one that works quite well with NMEA sentences. U-Centre. It is
written for the U-Blox receivers but does give a lot of useful information from
the NMEA data it can interpret. Free as well.
https://www.u-blox.com/en/product/u-center-windows
-=Bryan
Hurricane I believe
-=Bryan=-
> From: jim77...@gmail.com
> Date: Sun, 2 Oct 2016 17:01:10 +1100
> To: time-nuts@febo.com
> Subject: Re: [time-nuts] Caroliine .. I need to move on
>
> Well I'm intrigued!
>
>
> On 2 October 2016 at 15:53, Ian Stirling <i...@op
May find this old video interesting.
https://youtu.be/Iy23Us3nrX8
-=Bryan=-
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http://www.rbarrios.com/projects/MV89A/
-=Bryan=-
> To: time-nuts@febo.com
> From: a...@pcscons.com
> Date: Tue, 20 Sep 2016 15:09:41 -0700
> Subject: Re: [time-nuts] Normal operating specs of a Morion MV89?
>
> Hi Brian
>
> which cap is failing in the MV89 oxco-s?
&g
Any tips on resoldering the can, special solder or flux required? Quite often
they can be found for a good price on Ebay, from what I have read they are a
good OCXO minus the issue of the one particular cap failing.
-=Bryan=-
> From: brayn...@gmail.com
> Date: Tue, 20 Sep 2016 20:06:59
May also want to check the output amplitude. If memory serves me correct it is
very common for a capacitor inside this model number to fail. It can be fixed
but requires a torch or a pretty heavy duty soldering iron to get the can open.
http://www.rbarrios.com/projects/MV89A/
-=Bryan
There is also winlabmon, but I could not get it to work on Windows 10.
http://www.gpskit.nl/downloads-nl.htm
-=Bryan=-
> From: bpl...@outlook.com
> To: time-nuts@febo.com
> Date: Wed, 14 Sep 2016 21:42:05 -0700
> Subject: Re: [time-nuts] N1JEZ GPSDO Monitor Softwa
http://infixtechnologies.com/products/GPSMonitor/GPSMonitor.php
-=Bryan=-
> From: w1...@earthlink.net
> To: time-nuts@febo.com
> Date: Wed, 14 Sep 2016 20:51:57 -0700
> Subject: Re: [time-nuts] N1JEZ GPSDO Monitor Software
>
> GPS Monitor is too vague to do a Google on, can
Let me try this again, for some reason my email strips out on this list
Lady Heather, WinOncore12, SirfOnCore, VisualGPSXP, GPS Monitor.
-=Bryan=-
> From: bpl...@outlook.com
> To: time-nuts@febo.com
> Date: Wed, 14 Sep 2016 18:22:35 -0700
> Subject: Re: [time-nuts] N1JEZ GPSDO Moni
Few that I have used
Lady HeatherWinOnore12SirfOnCoreVisualGPSXP
-=Bryan=-
> From: w1...@earthlink.net
> To: time-nuts@febo.com
> Date: Wed, 14 Sep 2016 09:00:16 -0700
> Subject: [time-nuts] N1JEZ GPSDO Monitor Software
>
> I found one that I built many years ago and
dumb question but
how are you calculating the oscillator spans, you reference the VCXO at around
30ppm. I suspect this is because the VCXO has a sensitivity of 600-1000hz/v and
the OCXO of 1.6ppm has a sensitivity of 2hz/v or 3.2/v at 8v. But how are you
arriving at the ppm values?
-=Bryan
ing of crystal oscillators, frequency synthesisers, and similar
applications.
-=Bryan=-
> Date: Mon, 12 Sep 2016 21:00:51 +
> From: b...@evoria.net
> To: nsa...@kfu.com; time-nuts@febo.com
> Subject: Re: [time-nuts] A new take on the all-hardware GPSDO concept
>
> Nick sai
for the EFC, but stated that R2 and C2 are
not needed when using this OCXO. Not sure why they are omitted, is it because
of the DC amplifier or because of different specs of the OCXO?
http://www.jrmiller.demon.co.uk/projects/ministd/dcamp.gif
-=Bryan=-
> Date: Mon, 12 Sep 2016 01:25:53 -0700
>
Hello:
I have been following the Jim Miller simple GSDO build project at
http://www.jrmiller.demon.co.uk/projects/ministd/frqstd0.htm I have a few
OCXO's kicking around, but wondering what would the appropriate components be
for for R1,R2, C1, C2 to provide the PLL filter. I assume the PLL
Hello:
For those who have or interested in the Trimble/Symmetricom units found on flea
bay, here is a link to a user who posted some information on the 50 pin header
pin.
http://tipok.org.ua/node/53
-=Bryan
interference, antenna
location, etc, but worse case what would a user expect assuming the unit isn't
in holdover.
-=Bryan=-
> From: kb...@n1k.org
> Date: Fri, 19 Aug 2016 20:03:59 -0400
> To: time-nuts@febo.com
> Subject: Re: [time-nuts] Expected 10 MHz offset from a GPSDO?
>
>
numbers.
Cheers
-=Bryan=-
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with the mfg. numbers as I mentioned
you will find them a lot cheaper if you want to roll out your own.
-=Bryan=-
> From: rch...@earthlink.net
> Date: Sat, 2 Jul 2016 21:28:12 -0700
> To: time-nuts@febo.com
> Subject: [time-nuts] Good GPSDO?
>
> I am just getting into the precise
Sorry to be so dense on this but doesn't the unit just default to the Jupiter-T
command set on power up. I should be able to just enter @@Cj and receive the
(manufacturer name, model, serial number and software revision ) shouldn't I?
-=Bryan=-
> From: hol...@hotmail.com
> To: tim
on power cycling by using the Navman binary
command 1331 (message protocol control) when in the Navman binary mode. When
set to the Navman binary mode, all of the standard Navman messages are
supported as well as additional commands relating to timing applications.
-=Bryan=-
> From:
a burst of data at power
up, but that is about it. Any help appreciated.
-=Bryan=-
> From: hol...@hotmail.com
> To: time-nuts@febo.com
> Date: Thu, 16 Jun 2016 01:02:05 +
> Subject: [time-nuts] TU60-D120-131 Specs?
>
> From the Zodiac binary message, mine reports 12 chann
Quartz Crystal motional movement...
https://youtu.be/y-rCgumTn4Q
-=Bryan=-
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-=Bryan=-
> From: hol...@hotmail.com
> To: time-nuts@febo.com
> Date: Thu, 16 Jun 2016 01:02:05 +
> Subject: [time-nuts] TU60-D120-131 Specs?
>
> From the Zodiac binary message, mine reports 12 channels, software ver
> 93.07 from 01/16/04, hardw
Yes, that's the seller. I think the firmware version is in one of the NMEA
commands.
-=Bryan=-
> From: hol...@hotmail.com
> To: time-nuts@febo.com
> Date: Wed, 15 Jun 2016 04:37:13 +
> Subject: [time-nuts] TU60-D120-131 Specs?
>
> Mine came from seller "electr
Mark:
Did you order yours from the same seller on Ebay. I tried contacting the seller
to enquire if he knew what the firmware version was. Unfortunately he did not,
was hoping they are v1.18 or greater.
-=Bryan=-
> From: hol...@hotmail.com
> To: time-nuts@febo.com
> Date: Tue, 14 Ju
I thought the same but it looks like there is only 4 holes and quite oversized
at that, more like mounting holes, so suspect it is a area for a sub board.
-=Bryan=-
> Date: Sun, 5 Jun 2016 11:44:05 +0800
> From: ba...@163.com
> To: time-nuts@febo.com
> Subject: [time-nuts] A Symm
There is a interesting hobbyist level GPS frequency generator project on utube.
Not time nuts level, but a neat project nonetheless. Uses the Neo-7M. Three
parts.
https://youtu.be/zZ6tc_ROdfU
-=Bryan=-
> Date: Mon, 14 Mar 2016 16:11:16 -0400
> From: t...@patoka.org
> To: time-nuts
a switch on the side
that will give you a 10Mhz output if there is no antenna present.
http://www.eevblog.com/forum/projects/a-look-at-my-symmetricom-gpsdo-(ocxo-furuno-receiver)/
-=Bryan=-
> Date: Sun, 21 Feb 2016 11:55:59 -0600
> From: wpxs...@gmail.com
> To: time-nuts@febo.com
> Subject
irons at each end of the resistor . If they are small enough
you can add a glob of solder to the whole resistor, so both ends will melt.
Cheers
-=Bryan=-
> To: time-nuts@febo.com
> From: cfhar...@erols.com
> Date: Tue, 26 Jan 2016 01:50:47 -0500
> Subject: Re: [time-nuts] low noise mu
Nick, can the Attiny25 divide down a 20Mhz input. I understand the 12fxxx pics
max out at 20Mhz on a input so not sure if they would be suitable for my
purpose. Can't seem to find anything in the datasheet for the tiny that
explains the maximum frequency on a input pin.
-=Bryan=-
> Date:
of the CMOS type , can be connected directly to a digital circuit (for example,
an input of a micro-controller ) . Thus, it is possible to measure the
frequency of the original signal by counting the number of rising or falling
flanks in the module output signal.
-=Bryan
Saw this on the Hackaday site if anyone is interested.
https://hackaday.io/project/6872-gps-disciplined-tcxo
-=Bryan=-
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I believe the author was looking into modifying his circuit to use a LTC6957
as a frontend. Not sure if he ever got around to it.
https://www.febo.com/pipermail/time-nuts/2015-May/092138.html
-=Bryan=-
> From: t...@leapsecond.com
> To: time-nuts@febo.com
> Date: Mon, 12 Oct 2015
How does the 58532A compare to some of the other antennas out there like the
Nokia 470290. Right out of the box the Symmetricom has a >30db vs the >20db of
the Nokia.
-=Bryan=-
> From: w...@icloud.com
> Date: Thu, 1 Oct 2015 14:19:23 -0500
> To: time-nuts@febo.com
> Subjec
e firmware driven.
Cheers
-=Bryan=-
> Date: Wed, 30 Sep 2015 11:45:49 +0100
> From: cjaysh...@gmail.com
> To: time-nuts@febo.com
> Subject: Re: [time-nuts] FE-5680B Rubidium and DDS
>
> Bryan, I think we do, bought from an eBay seller named Fluke.I?
>
> I also found that
E-5680A/FE-5680A_schematics_v0.1.pdf
I also note the same strange chip in the middle of the absent Max233, wonder if
it is some type of optoisolator to protect inputs/outputs?Although not sure why
one would be needed if the MAX232 is unpopulated.
-=Bryan=-
> Date: Tue, 29 Sep 2015 15:41:37 +0100
&
Thanks Hal, that's interesting, will try and see how far I can get.
-=Bryan=-
> To: time-nuts@febo.com
> From: hmur...@megapathdsl.net
> Date: Fri, 25 Sep 2015 23:40:40 -0700
> CC: hmur...@megapathdsl.net
> Subject: Re: [time-nuts] FE-5680B Rubidium and DDS
>
>
Clint, where are you seeing a 10Mhz output from the XC9752. That may be the
easier approach if 10Mhz is the desired frequency. just send it to a buffer/
amplifier. Likely most users will want to do that anyways to add additional
outputs.
-=Bryan=-
> Date: Sat, 26 Sep 2015 07:36:30 +0
/testgear/fe-5680b-1pps-to-10mhz/msg556800/#msg556800
I as well wish there was a quick way of converting it back to 10Mhz. I am sure
it can be done, just not sure how or where to look
-=Bryan=-
> From: kb...@n1k.org
> Date: Fri, 25 Sep 2015 17:45:08 -0400
> To: time-nuts@febo.com
>
, firmware
issue, who knows.
p.s. I believe you need a minimum of three satellites to work through the
standard or precision survey.
-=Bryan=-
To: time-nuts@febo.com
From: hmur...@megapathdsl.net
Date: Wed, 12 Aug 2015 11:29:58 -0700
CC: hmur...@megapathdsl.net
Subject: Re: [time-nuts] Has
from the Antenna
Survey command. (S)-(A) toggle options.
Cheers
-=Bryan=-
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Just on my OP is there a command line to change from dbc to AMU. Everyone in a
while it pops up, but no sure how I managed to change it. Restarting an it
reverts to dbc
-=Bryan=-
From: bpl...@outlook.com
To: time-nuts@febo.com
Date: Tue, 11 Aug 2015 00:44:49 -0700
Subject: [time-nuts] LH
In LH what is your setting for AMU and elevation, they could inadvertently be
set so high you are not seeing any satellites (depending where you live). I
have to set the elevation down to 15 degrees and a AMU of 3.0
-=Bryan=-
Date: Fri, 7 Aug 2015 13:14:17 -0700
From: kd4...@gmail.com
Did you do 48 hour precision first survey first to get an accurate Lat/Long/
altitude?. You will probably need to start with a cold reset to erase any
previously stored data and then perform the survey.
-=Bryan=-
Date: Wed, 5 Aug 2015 19:16:23 -0700
From: kd4...@gmail.com
To: time-nuts
Chris:
If you did a cold reset I *think* it should have already done that, you would
have known because it would have said conducting survey or something like that
as opposed to Overdetermined clock. To be safe and force it,use the following
keystrokes in LH
S and then P
-=Bryan
Interesting video.
http://hackaday.com/2015/08/01/everything-you-wanted-to-know-about-oscillators/
-=Bryan=-
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But wouldn't normal watch wear just balance itself over time, one wears their
watch for say 12 hours and the rest it sits on a counter at a much colder
temperature. So wonder if Casio would actually go to such lengths to
compensate. Maybe, interesting though.
-=Bryan=-
From: kb...@n1k.org
to be a correlation to doppler readings and
signal strength. I have seen both negative and positive numbers.
Cheers
-=Bryan=-
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to logic).
Thus the need for a divider circuit to divide down to 10Mhz. The purpose is to
create a bench standard for hobby use and a external 10MHz reference for a HP
53131A
Pics of the waveforms (not my pics but my results are the same)
http://1drv.ms/1HB0Nwn
-=Bryan=-
From: kb
the existing circuitry. I would assume this would offer a
greater improvement in phase noise?
Cheers
-=Bryan=-
From: kb...@n1k.org
Date: Fri, 8 May 2015 17:19:59 -0400
To: time-nuts@febo.com
Subject: Re: [time-nuts] Divider circuit for Rubidium Standard
Hi
I guess the simple answer
Hi Rick:
Any suggestions for a circuit with better performance. Purpose will be a
external standard for a frequency counter.
-=Bryan=-
Date: Mon, 4 May 2015 21:09:51 -0700
From: rich...@karlquist.com
To: time-nuts@febo.com
Subject: Re: [time-nuts] Divider circuit for Rubidium Standard
as I don't need all the
dividers, but it has the circuitry for the amplifiers and buffers as well wave
shaping the input.
Cheers
-=Bryan=-
From: kb...@n1k.org
Date: Sun, 26 Apr 2015 09:56:17 -0400
To: time-nuts@febo.com
Subject: Re: [time-nuts] Divider circuit for Rubidium Standard
Hi
David partridges web site
http://www.perdrix.co.uk/FrequencyDivider/index.html
Cheers and thanks in advance.
-=Bryan=-
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Bob from the screenshot what is it that shows the GPS reception as very wrong.
just curious.
-=Bryan=-
From: kb...@n1k.org
Date: Wed, 22 Apr 2015 18:33:09 -0400
To: time-nuts@febo.com
Subject: Re: [time-nuts] Tuning a Trimble Thunderbolt
Hi
Looking at that screen shot, something
The repair guide for the Efratom LRPO 101 on the K04BB website recommends all
the tantalums be replaced.
http://www.ko4bb.com/manuals/index.php?dir=02_GPS_Timing/Efratom
-=Bryan=-
Date: Sun, 22 Feb 2015 16:44:06 +0100
From: j.koeg...@gmail.com
To: time-nuts@febo.com
Subject: [time-nuts
Off topic somewhat, but an interesting project .
http://www.dalton.ax/hpdisk/
-=Bryan=-
Date: Thu, 22 Jan 2015 23:06:53 +0100
From: iov...@inwind.it
To: time-nuts@febo.com
Subject: [time-nuts] R: Re: Racal Dana 1992 universal counter
I' ve used for a while a National Instruments RS232
-/291273421415?pt=US_Ham_Radio_Receivershash=item43d13fb267
Some info on converting to 10Mhz by tracing a 20Mhz output on the board and
sending to a divider from the Ebay listing.
http://www.eevblog.com/forum/testgear/fe-5680b-1pps-to-10mhz/msg557064/#msg557064
Thank you
-=Bryan
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