Joe,
On 11/14/2014 03:56 AM, Joe Leikhim wrote:
Looks like a clock to divide by 1000 and generate 59.99 Hz
A computer video card or monitor?
Some piece of Video gear?
You would have 60/1.001 in that case. This is more 60/1.000124 or so.
Someone tries to do 60 kHz but is 125 ppm south.
A
Hi
I have a Bolt that has a similar stuck EFC. In my case it’s not the OCXO
either. There is some sort of failure on the inputs to the summing op amp that
drives the output to the high end of the DAC’s range.
Bob
On Nov 13, 2014, at 9:06 PM, EB4APL eb4...@cembreros.jazztel.es wrote:
Hello
Hi
That OCXO is doing very well.
If you look at the plot, it’s doing a few LSB’s on the DAC over the time
period. That’s good performance.
Bob
On Nov 13, 2014, at 9:17 PM, paul swed paulsw...@gmail.com wrote:
Bob the actual pictures and files are large so here is the left screen and
List,
I’ve digitized and edited an article titled* Circuit DividesFrequency by N+1 by
Bert Erickson, Fayetteville, NY from EDN 7/11/2002*.
Essentially, this circuit is expandable and allows for adivision by any number
plus one.
Anyone who wants a PDF copy please send me an original
The EFC is probably not sick, it is still in the middle of it's range, and has
moved only a small amount. I would let it run for another week and see if it
starts to head back down. As I mentioned in a previous post, I had to run my
z3816a for several weeks before it settled down. After
Quad Driven Mixer 5 to 10 MHz Doubler Atricle
Hello,
I have a printout / .pdf file / about this article.
Please contact me off lone the I will send as an attached file.
Rgds Ernie.
-Original Message-
From: time-nuts-request time-nuts-requ...@febo.com
To: time-nuts
Hi
It could easily be a switcher in somebody’s video gear. Keeping the power
supply in sync with the video may / may not be a good idea. Some people do it
that way.
Bob
On Nov 13, 2014, at 6:23 PM, Doug Ronald d...@dougronald.com wrote:
I'm working on my WWVB BPSK receiver and am
In message 0b078d42-2bf0-48ae-a6e6-2399ff308...@n1k.org, Bob Camp writes:
Hi
It could easily be a switcher in somebody’s video gear. Keeping
the power supply in sync with the video may / may not be a good
idea. Some people do it that way.
Vertical retrace in NTSC ?
at a frequency of
Hi
Need to drink my coffee first and type messages second.
The Time is doing a “LSB” change of some sort. It’s not sick, there’s either a
problem with the string or something like that. The EFC is not moving at an
alarming rate based on the plot.
Simple things to do:
Unplug the software and
On 11/14/14, 4:28 AM, Bob Camp wrote:
Hi
The question kind of is: Is it really supposed to be 60kHz and slightly
off frequency? Or is it deliberately at that frequency because it's a
multiple/submultimple of something useful?
It could easily be a switcher in somebody’s video gear.
OK everyone. I am sorry I left my 60 Khz transmitter on in Boston. Good to
see its getting out to California. The antenna is a 90 foot tower.
I figured since the d-psk-r's been a long experiment I would just replace
wwvb with a constant phase no modulation Cs driven signal. Why fix the
problem?
Thanks everyone. My concern is did I need to reach out and get an exchange
before the 30 days is up. I sense ASI the vendor is actually a pretty good
company and will do the right thing.
Regards
Paul
WB8TSL
On Fri, Nov 14, 2014 at 7:35 AM, Bob Camp kb...@n1k.org wrote:
Hi
That OCXO is doing
No need to digitize, the article is available here:
http://www.edn.com/design/test-and-measurement/4347165/Circuit-divides-frequency-by-N-1
or here (in .PDF):
ftp://ztchs.p.lodz.pl/PRP/PRP_2006_2007/71102di.pdf
On Fri, Nov 14, 2014 at 8:02 AM, Perry Sandeen via time-nuts
time-nuts@febo.com wrote:
Hi
The people selling them do indeed stand behind the product. My only concern is
making sure there really is a problem before something gets swapped out.
The best thing (by far) is to get a second unit and compare their outputs.
Bob
On Nov 14, 2014, at 9:17 AM, paul swed
Luciano,
I will put this in OrCAD/CADENCE PSPICE over the weekend
and see what it looks like.
-George
On 11/14/2014 02:53 AM, tim...@timeok.it wrote:
George,
you can replace the input transformer with the mini-circuits model
T2-613-1-KK81 or T662-KK81 for under 2 Dollars. The inductors L1
FYI, I found a source for the PLCC44 version of the STEL-1173 that's
used in some Datum FTS Cesium standards. I got mine from here:
http://www.aliexpress.com/item/Free-shipping-10PCS-STEL-1173-CM-PLCC/2023682701.html
I left positive feedback, not sure why it doesn't show.
Shipping was very
The ring counter has been re-invented! I'm pretty sure that particular
feedback network is in the TTL Cookbook (will have to find my copy).
Tim N3QE
On Fri, Nov 14, 2014 at 9:42 AM, Azelio Boriani azelio.bori...@gmail.com
wrote:
No need to digitize, the article is available here:
Are you sure you are measuring the 4065A against the Tbolt? TBolt
feeding the start and 4065A feeding the stop and a counter in time
interval mode?
On Fri, Nov 14, 2014 at 3:26 PM, Ed Palmer ed_pal...@sasktel.net wrote:
FYI, I found a source for the PLCC44 version of the STEL-1173 that's used in
Whatever the source for that signal, it may explain why all our wwvb clocks
have had receiving troubles over the last weeks syncing up here in NV...
Sent from my iPad
On Nov 14, 2014, at 6:10, paul swed paulsw...@gmail.com wrote:
OK everyone. I am sorry I left my 60 Khz transmitter on in
https://www.google.com/patents/US3109990
On Fri, Nov 14, 2014 at 10:54 AM, Tim Shoppa tsho...@gmail.com wrote:
The ring counter has been re-invented! I'm pretty sure that particular
feedback network is in the TTL Cookbook (will have to find my copy).
Tim N3QE
On Fri, Nov 14, 2014 at 9:42
My unit has been on for just over a week. I captured the data overnight - the
PPS TI plot is here
https://drive.google.com/file/d/0B5tlecUITRBLMVV4NzFTMnlNaDA/. I see a similar
PPS TI graph to yours, but my EFC is much different. Trouble is with that, I'm
not sure what I'm looking at and
Nigel, thanks for the manual. It helped immensely. This unit does run TSIP of
course, but with a smaller set of commands/reports than the Thunderbolt. As for
the internals, I only got as far as seeing that the GPS module is in fact a UT+
with a Synergy sticker on it and the OCXO has an Efratom
You may have to rig up a portable or mobile receiver to track it down.
Regards.
Max. K 4 O DS.
Email: m...@maxsmusicplace.com
Transistor site http://www.funwithtransistors.net
Vacuum tube site: http://www.funwithtubes.net
Woodworking site
Hi,
In my case, if the problem is the op-amp or some passive around, it can
be easily replaced. If not the only solution is to find a parts unit to
transplant the programmed Xilinx chip. Now I'm quite busy trying to get
the schematic of the op-amp zone.
Regards,
Ignacio
El 14/11/2014 a
Perry yes that would be handy.
I just received the si5351a chips mentioned on time nuts so may play with
those shortly. They would seem to take of messy numbers nicely. But that
may not be very true in reality.
Regards
Paul
WB8TSL
___
time-nuts mailing
Was thinking about another.
Regards
Paul
WB8TSL
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and follow the instructions there.
Have you contacted your local FCC office ?
It has been about 20 years, but the FCC use to be quite proactive when
interference tickets were opened
-pete
On Fri, Nov 14, 2014 at 10:54 AM, Max Robinson m...@maxsmusicplace.com wrote:
You may have to rig up a portable or mobile receiver to track
OK, its a mystery, and will be until its properties are known.
We have instrument capable of measuring those properties, but so far
we've had the typical exchange of ignorance so often found on the 'net.
Clever ignorance, but still not useful.
Is Said Jackson the only other person seeing
Thanks. You reminded me of the time when design ideas really had content. No
more, I'm afraid...
Don
Azelio Boriani
No need to digitize, the article is available here:
http://www.edn.com/design/test-and-measurement/4347165/Circuit-divides-frequency-by-N-1
or here (in .PDF):
The premise of higher than normal click speed is false in the article too
because the complex NOR gate is slow with that many inputs, and its tpd needs
to be added to the Tsu and Tco of the flip flop chains, as well as the pcb
propagation delays through the worst case trace..
It would have
List,
Wrote [Snip] The chain in the Z3810 / 3811 / 3812 Lucent
boxes is *much* different than the setup in the earlier parts. The phase noise
and ADEV on the Z3810’s is better than what you got on the earlier versions.
That’s good to know. I only have the older style units. It
will be
Also, simon the plls can be entirely bypassed. The circuits aren't clearly
exposed but I believe you could get the peripheral clock covered and
definitely the Ethernet clock - interesting from a 1588 perspective.
On Friday, November 14, 2014, Simon Marsh subscripti...@burble.com wrote:
Most
This is fantastic. If anyone is interested i would be happy to share my
design for a couple of PLL/oscillator boards in cape form factor that would
feed this perfectly. I've been waffling on my choice of microcontroller
but in the spirit of this application I'll likely go with an msp430.
On
Yes! I did find a patent that illustrated the exact same feedback circuit
as in the EE times article. But most self-decoding ring counters in
mass-produced applications use simpler lower propagation-delay gate
arrangements to ensure the counter self-corrects any defective sequences.
e.g. look at
I'd certainly be interested, and any suggestions for doing a time-nut
suitable 10 to 24mhz step up gratefully received.
Cheers
Simon
On 14/11/2014 18:50, Neil Schroeder wrote:
This is fantastic. If anyone is interested i would be happy to share my
design for a couple of PLL/oscillator
Hi:
The Twisted Johnson Ring Counter may be the one your looking for.
The individual stages are not clocked at the input frequency, but rather
something like N/5.
http://en.wikipedia.org/wiki/Ring_counter#Four-bit_ring_counter_sequences
It's decodes using 2-input gates.
The last one I made used
Thanks to all who responded with suggestions and comments. Here is the latest...
At great effort, I moved the loop-stick antenna and preamp, now mounted on a
pole, from the rear of the house to a midpoint of the house toward the front.
The old position had the antenna about 10 feet off the
Isn't the 10i/p gate to do the divide by N+1?? not just to avoid an all
zeros switch on which does not need all 10 stages fed back if all you want
is an N stage ring counter??
Alan
G3NYK
- Original Message -
From: Tim Shoppa tsho...@gmail.com
To: Said Jackson saidj...@aol.com;
Doug
Great absolutely the fact that small of move made that much of a difference
and that you can not null it does say nearfield. Seems very nearfield.
You can prove that, cut the feed lines. Hmmm maybe not.
I used the analog approach using mc 1496 chips and also the analog devices.
Was not crazy
Ouch! some circuits just sound too painful to think about... ;-)
---
The Twisted Johnson Ring Counter...
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Anthony
Had a chance to compare my image with yours and the blue behaviors the same
as far as peak to peak goes. Yours however has far fewer jumps then mine.
You EFC has various jumps but is fairly constant while mine as Bob and
others have said is baking in. I am feeling better about my Lucent.
I'm pretty sure that there is nothing the in the neighbor's satellite
receiver that is allowed to interfere with licensed services, such as
WWVB. More usually, they contain a label, that says they must not cause
any interference, and must suffer all interference.
Reduce your loop to something
Hi Doug:
Can you power your WWVB receiver from batteries and shut down your house AC?
That way it's not something inside your house.
http://www.prc68.com/I/Loop.shtml
Mail_Attachment --
Have Fun,
Brooke Clarke, N6GCE
http://www.PRC68.com
http://www.end2partygovernment.com/2012Issues.html
You might be able to notch it out with a Q multiplier.
Regards.
Max. K 4 O DS.
Email: m...@maxsmusicplace.com
Transistor site http://www.funwithtransistors.net
Vacuum tube site: http://www.funwithtubes.net
Woodworking site
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