Hi Bill,
On 05/07/2012 05:12 AM, Bill Hawkins wrote:
Thanks for the analysis, Magnus.
Always happy to contribute.
A few other time constants might be interesting -
When a step change is made to the control voltage or current,
how long does it take for the oscillator to settle down to a
new
Magnus,
If you flip back and forth, then it makes sense because your phase
deviations will be less.
Can you further explain this? Thanks.
On Mon, May 7, 2012 at 8:57 AM, Magnus Danielson mag...@rubidium.dyndns.org
wrote:
Hi Bill,
On 05/07/2012 05:12 AM, Bill Hawkins wrote:
Thanks for
I once did a test with a audio expert and compared a CD and a digital copy.
He confirmed that the copy was the original and when I showed him which was
which
he still refused to believe.. I know a local guy who gold plated the PCBs for
his home brewed amp!
Raj
At 07-05-2012, you wrote:
These
On Mon, 07 May 2012 13:40:15 +0530
Raj vu2...@gmail.com wrote:
I once did a test with a audio expert and compared a CD and a digital copy.
He confirmed that the copy was the original and when I showed him which was
which
he still refused to believe.. I know a local guy who gold plated the
Let's expect the ultimate portable MP3 player with atomic clock
reference... :]
Also funny are the offerings with RbO CD-clocks... usually tweaked
FE-5680s, which are not exactly famous for a clean jitter/spurious free
output signal... The only reason is the easiness of output frequency
El 07/05/2012 11:20, Attila Kinali escribió:
But to bring this back to time nutty topics, have a look at
http://www.colorfly.eu/product.html It's an MP3 player with high
precision timing. It does not only use two TCXOs with 5ps Jitter..
No! It also employes a technique known as Jitter Kill for
An old saying: a fool and his money are often parted.
Sums things up nicely I feel.
Rob Kimberley
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
Behalf Of Javier Herrero
Sent: 07 May 2012 11:30
To: time-nuts@febo.com
Subject: Re: [time-nuts]
How does the fool get his money?
Chris Stake
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
Behalf Of Rob Kimberley
Sent: 07 May 2012 11:55
To: 'Discussion of precise time and frequency measurement'
Subject: Re: [time-nuts] Oh dear
An
But to bring this back to time nutty topics, have a look at
http://www.colorfly.eu/product.html
It's an MP3 player with high precision timing. It does not only use
two TCXOs with 5ps Jitter.. No! It also employes a technique known
as Jitter Kill for the ultimate mobile sound experience! :-)
Time nuts has turned in to a chat room to people that have diarrhea of
their fingers. The result is that many of us converse off list and do not
contribute to meaningful dialog.
Are there not rules and if yes, should they not be respected and adhered
to?
Bert Kehren
Hi Bert,
Couldn't agree more with you. On the other hand, and which is even worse,
questions from not-so-hardcore-time-nuts are simply ignored on a random
basis.
I'm leaving the group. If you ever come to or need something from Spain, let
me know.
Regards,
Roberto EB4EQA
-Original
amen
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
Behalf Of ewkeh...@aol.com
Sent: Monday, May 07, 2012 7:15 AM
To: time-nuts@febo.com
Subject: [time-nuts] Chat Room?
Time nuts has turned in to a chat room to people that have diarrhea of
I've not seen many questions ignored on this excellent group.
If they were, then maybe, just maybe no one had an answer at that time.
Rob Kimberley
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
Behalf Of Roberto Barrios
Sent: 07 May 2012
Yes, that is the case: if I have no clue than simply I don't write
nothing... Roberto, please, if you have any question, try now. I'm here.
You were trying to set up a lock identifier for the XOR type FLL. I
suggested a simple count the difference method: an UP-DOWN counter tied
to the two 10KHz
I suggest that the kind of techno-eliteism displayed in these comment, in
fact, breeds the kind of drivel in that eBay ad.
An average reader is simply not equipped to deal with piles of BS, whether
it is about Rubidiums and sampling rate stability or phase noise or Adev
and LadyHeather.
YMMV,
A friend of mine signed me up for a catalog from the Audio
Advisor. He said I deserved this - I was afraid to ask what he
meant by that! Spend a few minutes looking over this
site: http://www.audioadvisor.com/ Be sure to check out their
Power cords at:
I must get one of their line cords to see if it will improve my timing
system!!
You just have to laugh at this nonsense.
Rob K
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
Behalf Of Burt I. Weiner
Sent: 07 May 2012 15:39
To:
In message 226574.14407...@smtp104.sbc.mail.mud.yahoo.com, Burt I. Weiner w
rites:
Be sure to check out their
Power cords at: http://home-audio.audioadvisor.com/search?w=Power+Cords
I always wondered how the distortion could stop right at the power
outlet, but I see that somebody has cornered
Nope.
Any Audiophool knows green electricity sounds much better, without any
artifacts produced by those annoying carbon atoms in coal, oil, or natural
gas, rattling around producing annoying distractions.
-John
In message 226574.14407...@smtp104.sbc.mail.mud.yahoo.com,
On 5/7/12 7:39 AM, Burt I. Weiner wrote:
A friend of mine signed me up for a catalog from the Audio Advisor. He
said I deserved this - I was afraid to ask what he meant by that! Spend
a few minutes looking over this site: http://www.audioadvisor.com/ Be
sure to check out their Power cords at:
And for those who want a good debunking article to show to their
non-technical friends:
http://www.audioholics.com/education/cables/power-cables
On 5/7/2012 8:01 AM, Poul-Henning Kamp wrote:
In message226574.14407...@smtp104.sbc.mail.mud.yahoo.com, Burt I. Weiner w
rites:
Be sure to check
In message 52252.12.6.201.2.1336403114.squir...@popaccts.quikus.com, J. Fors
ter writes:
Any Audiophool knows green electricity sounds much better, without any
artifacts produced by those annoying carbon atoms in coal, oil, or natural
gas, rattling around producing annoying distractions.
Unless,
All this kerfuffle about that Rubidium Clock kind of misses the point.
This is not some Audiophool thing but a serious piece of gear used for
recording studios. I am not going to get into the pricing of it, but if
you add up the cost of a /new/ Rb unit, distribution amp, power supply
and
In message 4fa7e639.9090...@earthlink.net, Jim Lux writes:
Well.. this is where folks on this list can do the world a service..
The whole thing about timing, stability, phase noise, Allan deviations,
etc. *is* complex, and it's tricky to come up with easy to understand,
short, descriptions of
Roberto
you and I have already dialog off list that I value and we will continue.
Some legitimate questions get drowned out by off subject postings but in my
opinion there is room for techno elitism on subjects that are time and
frequency related I have learned a lot, and for
This is the most ridiculous discussion in the history of this group. If
anyone could sympathize with the need for super-timing on audio it should be
those of you who think you need cesium clocks in your homes.
-RL
---
Robert Lutwak | SymmetricomR, Inc.
Chief Scientist
-Original
Does anyone have any knowledge of a simple (just soldering a few connections
and maybe programming a hz/volt rate) PCB for synchronizing a precision OCXO to
a GPSDO? I am trying to improve short term stability with a high stability
OCXO and dont want to cut into my fury and replace the OCXO.
As an Audiophile and T-Nut I am often torn by what could affect sound quality,
but I have realized that there are many things that affect sound that as
engineers we have not learned to define. As a scientist I look forward to the
day we can accurately rate how equipment will sound in
A crummy crystal oscillator zero beated to WWV is good to 1 in 10E6, a Rb
disciplined to GPS maybe 1 in 10E11.
Do you seriously think you, or anybody, can hear a pitch difference of
0.001 Hz in the audio range?
A quartz crystal is plenty good for any audio application, IMO.
-John
=
In message 063ae10c-af96-4f39-9caf-9e5ecc96b...@gmail.com, Bill Dailey writes
:
Does anyone have any knowledge of a simple (just soldering a few
connections and maybe programming a hz/volt rate) PCB for synchronizing
a precision OCXO to a GPSDO? I am trying to improve short term
stability with a
In message 226574.14407...@smtp104.sbc.mail.mud.yahoo.com, Burt I.
Weiner w
rites:
Next step will be to try to sell them electricity produced on
turbogenerators aligned to the earths magnetic field in order
to deliver minimal low unharmonic distotion...
I've been thinking I should be
Time nuts has turned in to a chat room to people that have diarrhea of
their fingers. The result is that many of us converse off list and do not
contribute to meaningful dialog.
Are there not rules and if yes, should they not be respected and adhered
to?
Bert Kehren
Bert,
The
Doc contact me off list
Bert Kehren
In a message dated 5/7/2012 11:40:04 A.M. Eastern Daylight Time,
docdai...@gmail.com writes:
Does anyone have any knowledge of a simple (just soldering a few
connections and maybe programming a hz/volt rate) PCB for synchronizing a
precision
OCXO to
On Mon, 07 May 2012 08:20:55 -0700
Dan Rae dan...@verizon.net wrote:
I see nothing odd about wanting to get the best possible source for the
Master Clock for your master recordings.
My son does run a small studio and for him I was able to make a version
of that unit, for a lot less money
This is something I would also like to know. I'm sure many others
would be interested as well. Bert would it be possible for you to
share your thoughts on the matter with the group at large?
-Eric
On Mon, May 7, 2012 at 8:43 AM, ewkeh...@aol.com wrote:
Doc contact me off list
Bert Kehren
Actually the numbers are quite real, play with the math, a small amount of
jitter in a DAC (X) can
have a large difference (Y) when sampling a complex wave form especially
in the audiophile world where the sound of 24bit dac 16,777,216 discrete
levels is clearly superior to older 16 bit dac
On Mon, 07 May 2012 15:34:21 +, Poul-Henning Kamp
p...@phk.freebsd.dk wrote:
In message 063ae10c-af96-4f39-9caf-9e5ecc96b...@gmail.com, Bill Dailey writes
:
Does anyone have any knowledge of a simple (just soldering a few
connections and maybe programming a hz/volt rate) PCB for synchronizing
Actually in digital audio playback timing is just as important except that
there is no was to remove jitter during poor recordings.
Thomas Knox
Date: Mon, 7 May 2012 08:20:55 -0700
From: dan...@verizon.net
To: time-nuts@febo.com
Subject: Re: [time-nuts] Oh dear
All this kerfuffle
On Mon, 7 May 2012 10:02:25 -0600
Tom Knox act...@hotmail.com wrote:
Actually the numbers are quite real, play with the math, a small amount
of jitter in a DAC (X) can have a large difference (Y) when sampling a
complex wave form especially in the audiophile world where the sound of
24bit
Tried, no interest, some one has offered to in the future do a gate array
version, you may want to wait for that I am in the mean time using am analog
loop for less than 100 seconds between Rb and OCXO and a very modified
Shera for GPS/Rb. Works for me.
Contact me off list and we can talk.
On Mon, 7 May 2012 18:19:19 +0200
Attila Kinali att...@kinali.ch wrote:
Of course, you have
to keep the clock signal clean of any disturbance that might add modulations
to it. But that's a matter of keeping the power supply clean and having the
signal shielded. It's not an inherent property
Using the PPS as a sync source?
On Mon, May 7, 2012 at 6:24 PM, ewkeh...@aol.com wrote:
Tried, no interest, some one has offered to in the future do a gate array
version, you may want to wait for that I am in the mean time using am
analog
loop for less than 100 seconds between Rb and OCXO
The Vectron TRU-050 is a PLL with an integrated VCXO. You can sync a 10MHz
OCXO but not from a GPS receiver with the PPS only.
On Mon, May 7, 2012 at 6:29 PM, Azelio Boriani azelio.bori...@screen.itwrote:
Using the PPS as a sync source?
On Mon, May 7, 2012 at 6:24 PM, ewkeh...@aol.com wrote:
If you take into consideration that the best currently available DACs,
also true for analog circuits, have a dynamic range about 120-126dB, the
last 3-4 bits are quite irrelevant (random noise mostly)... a good 20bit
DAC already pushes the limits.
The marketingdroids swarming for the newest 32
It has nothing to do with engineering.
Artists, and I use the word with a huge bag of salt, are often Prima
Donnas. They are under the illusion that their works are masterpieces,
because they sell millions of copies on iTunes or elsewhere, or theit
concerts are sold out in two minutes. So,
On 5/6/2012 7:39 PM, Jim Palfreyman wrote:
http://www.ebay.com.au/itm/Antelope-Audio-Isochrone-10M-Rubidium-Atomic-Clock-/270809581736?pt=LH_DefaultDomain_0hash=item3f0d8248a8
Make sure you read the description to discover what it's being sold for.
My chuckle for the day.
Jim Palfreyman
On Mon, May 7, 2012 at 8:59 AM, Attila Kinali att...@kinali.ch wrote:
On Mon, 07 May 2012 08:20:55 -0700
Dan Rae dan...@verizon.net wrote:
I see nothing odd about wanting to get the best possible source for the
Master Clock for your master recordings.
You are right about that. But there are
Hi
Be careful when you talk about jitter of any device, OCXO's included. There
is always an implied bandwidth in the conversion of phase noise to jitter.
If you extend the bandwidth down low enough (as in low audio) the jitter
goes up quite a bit. In the case of audio, jitter at low frequencies
Isn't long term stability an oxymoron? Or, put another way, a Murphy
Mantra?
Don
MailLists
Let's expect the ultimate portable MP3 player with atomic clock
reference... :]
Also funny are the offerings with RbO CD-clocks... usually tweaked
FE-5680s, which are not exactly famous for a clean
On 5/7/2012 2:20 AM, Attila Kinali wrote:
On Mon, 07 May 2012 13:40:15 +0530
Rajvu2...@gmail.com wrote:
I once did a test with a audio expert and compared a CD and a digital copy.
He confirmed that the copy was the original and when I showed him which was
which
he still refused to believe..
Suppose you have a perfect, ideal clock that puts out 'convert' pulses at
an exact rate is used to strobe a high precision A/D.
Now suppose you add jitter to that perfect clock so that the rate stays
the same but time interval between successive pulses varies randomly
between P(1-x) and P(1+x).
One of my other avocations is precision shooting. I would not like to
engage in a contest to see which bunch of aficionados has more
folklore
Don
Javier Herrero
El 07/05/2012 11:20, Attila Kinali escribió:
But to bring this back to time nutty topics, have a look at
On Mon, 7 May 2012 10:30:56 -0500
Bill Dailey docdai...@gmail.com wrote:
Does anyone have any knowledge of a simple (just soldering a
few connections and maybe programming a hz/volt rate) PCB for
synchronizing a precision OCXO to a GPSDO? I am trying to improve
short term stability with a
Nearly all modern recordings are multiple mono. One microphone per instrument
if not more. Multiple overdubs. If high ticket artists are collaborating, they
may be recorded at different times. (Bruce Springsteen and Rosanne Cash duet
for example.) They want a high bit depth so the final product
On Mon, 07 May 2012 08:11:53 -0700
Jim Lux jim...@earthlink.net wrote:
- the recent GPS filtering thing..
You mean the Don't GPS your Rb thread?
it took a YEAR for someone in the
PNT community to finally come up with a good, simple explanation of why
L^2 arguments were invalid. And it
My apologies if is missed it, but will there be official support of
the nortel version in some future release of LH?
On Thu, May 3, 2012 at 5:02 AM, Mark Sims hol...@hotmail.com wrote:
Recently Sam managed to poke and prod a Trimble/Nortel GPSTM (NTGS50AA)
enough to wake it up out of its
On 05/07/2012 07:01 PM, Attila Kinali wrote:
On Mon, 07 May 2012 08:11:53 -0700
Jim Luxjim...@earthlink.net wrote:
- the recent GPS filtering thing..
You mean the Don't GPS your Rb thread?
it took a YEAR for someone in the
PNT community to finally come up with a good, simple explanation
On Mon, May 7, 2012 at 9:54 AM, Attila Kinali att...@kinali.ch wrote:
What speaks against a simple design as used in the GPSDO by James Miller[1]?
Or if you want a better PLL than just an XOR gate, use a 74x4046.
They are still available in DIL, so building a complete PLL is possible
on a
I am patiently waiting for the code to drive the DAC.
Bert Kehren
In a message dated 5/7/2012 12:54:54 P.M. Eastern Daylight Time,
att...@kinali.ch writes:
On Mon, 7 May 2012 10:30:56 -0500
Bill Dailey docdai...@gmail.com wrote:
Does anyone have any knowledge of a simple (just soldering
That was a big problem with the dynamic range of tape recorders, which
had to be solved with noise reduction circuits. Even good 16 bit ADCs
have a higher DR than the SNR of most instruments in quiet recording
studios. With the mixing of multiple dubs, the main problem is the
summed background
In message 4fa7fb9b.3040...@yahoo.com, Randy D. Hunt writes:
On 5/6/2012 7:39 PM, Jim Palfreyman wrote:
http://www.ebay.com.au/itm/Antelope-Audio-Isochrone-10M-Rubidium-Atomic-Clock-/270809581736?pt=LH_DefaultDomain_0hash=item3f0d8248a8
Make sure you read the description to discover what it's
On Mon, 07 May 2012 19:07:12 +0200
Magnus Danielson mag...@rubidium.dyndns.org wrote:
Uhm.. i don't understand at all. Could you give some pointers or explain
what L^2 and the rest is?
Ligthsquared and their LTE system that threatend to noise out GPS from
US. Loads of messages on that on
In message d2251f0f290d4b1ab54e1a4dba345...@vectron.com, Bob Camp writes:
If you extend the bandwidth down low enough (as in low audio) the jitter
goes up quite a bit. In the case of audio, jitter at low frequencies just
might be something to worry about.
Not with the kind of physical laws I
On Mon, 7 May 2012 12:17:02 -0500
Bill Dailey docdai...@gmail.com wrote:
Regarding the vectron tru-050 looks nice but requires me to come up with
a board and resistors and capacitors etc which is above my ability.
Uhmm... how far does your abilities go?
I looked at the miller thing but
In message 62172.12.6.201.2.1336409319.squir...@popaccts.quikus.com, J. Fors
ter writes:
Suppose you have a perfect, ideal clock that puts out 'convert' pulses at
an exact rate is used to strobe a high precision A/D.
Now suppose you add jitter to that perfect clock so that the rate stays
the same
Analog Devices and Linear Technology have application notes on this
subject. At least with sampling converters, jitter directly limits
dynamic range.
My back of the envelope calculation comes up with about 25ps of RMS
jitter for an ideal 16 bit sampling converter at audio frequencies but
most
In message 4fa80913.7000...@medesign.ro, MailLists writes:
That was a big problem with the dynamic range of tape recorders, which
had to be solved with noise reduction circuits. Even good 16 bit ADCs
have a higher DR than the SNR of most instruments in quiet recording
studios.
Not so fast
On Mon, 2012-05-07 at 18:15 +, Poul-Henning Kamp wrote:
We must start out by defining the acceptable level of total distortion,
if we choose 0.5% then we need 200 digital levels, roughly 8 of
your 16 bits for the signal.
That gives you a headroom of 7 bits (leaving one for the sign)
In message 1336415866.16321.14.camel@laptop, Dan Mills writes:
On Mon, 2012-05-07 at 18:15 +, Poul-Henning Kamp wrote:
16 bits is actually fine as a distribution format,
Yes, I agree with that, and lets use that agreement to stop the
topic :-)
--
Poul-Henning Kamp | UNIX since Zilog
On Mon, May 7, 2012 at 11:15 AM, Poul-Henning Kamp p...@phk.freebsd.dk wrote:
We must start out by defining the acceptable level of total distortion,
if we choose 0.5% then we need 200 digital levels, roughly 8 of
your 16 bits for the signal.
That gives you a headroom of 7 bits (leaving one
On 05/07/2012 08:15 PM, Poul-Henning Kamp wrote:
In message4fa80913.7000...@medesign.ro, MailLists writes:
That was a big problem with the dynamic range of tape recorders, which
had to be solved with noise reduction circuits. Even good 16 bit ADCs
have a higher DR than the SNR of most
In message cabbxvhuasdq-mwug6fmwc4ln-d3zkhegvpvvbpcprwxewgf...@mail.gmail.com
, Chris Albertson writes:
You are mixing recording and distribution. The 16-bit 44.1K CD
Quality is for distribution to consumers.
I'm old enough to have listend to comparisons when 16 bit 44.1KHz
was _both_ recoding
New question about jitter in recording.I was reading some time
ago about non-uniform sampling. Basically the time between samples is
random (or as random as you can make it) But now you have to sample a
clock AND the signal. Or more likely use a psuedorandon sample
interval that can be
In message cabbxvhtad_ewe_ptrmkifkrywzjfhw3xmypfev6b5su3xw+...@mail.gmail.com
, Chris Albertson writes:
Advantages are that you
can sample higher frequency than 1/2 the average sample rate and
alieasing is less a problem.
Disadvantage: on playback you get both a sample and a standard deviation
j...@quikus.com said:
Suppose you have a perfect, ideal clock that puts out 'convert' pulses at an
exact rate is used to strobe a high precision A/D.
Now suppose you add jitter to that perfect clock so that the rate stays the
same but time interval between successive pulses varies randomly
OK, got it. Yes, something like the dithering with a DAC to increase the
resolution.
On Mon, May 7, 2012 at 6:52 PM, Magnus Danielson mag...@rubidium.dyndns.org
wrote:
Azelio,
On 05/07/2012 09:56 AM, Azelio Boriani wrote:
Magnus,
If you flip back and forth, then it makes sense because
Hi Azelio,
On 05/07/2012 10:13 PM, Azelio Boriani wrote:
OK, got it. Yes, something like the dithering with a DAC to increase the
resolution.
Indeed. Now, consider now that the variations can come from any form of
noise source.
Another thing I've learned is that the longer you wait with a
Yes, interesting, now I realize... but:
the larger the deviation becomes and lower frequency it will have... and
both makes it harder to suppress by filtering.
Filtering at what level? Lengthen the sampling time? The average build up?
That is, now I'm not aware and think that I have to correct as
OK, so 1 PPS GPS to Rb - need a TIC; 10MHz Rb to OCXO - need a PLL. Are
you interested in an all digital 10nS single shot TIC that gives you a 2's
complement number (negative at the left of the GPS PPS and positive at the
right)? Here it is. This is my TIC, I use it on all my GPSDOs.
LIBRARY
Regarding my abilities.. regarding electronics... poor soldering is about
my limit... through hole only. That is why I was hoping there was some
off the shelf method that I could wire up with 10 MHz in from the gspdo and
from the oscillator then wire up the EFC volatge and set the required
On 05/07/2012 10:59 PM, Azelio Boriani wrote:
Yes, interesting, now I realize... but:
the larger the deviation becomes and lower frequency it will have... and
both makes itharder to suppress by filtering.
Filtering at what level? Lengthen the sampling time? The average build up?
That is,
I'm running (although running isn't quite correct for VHDL) this on a
50Kgates Xilinx XC3S50 FPGA. Of course this can be compiled on whatever
brand of logic you prefer, I've not used any proprietary/strange (other
than local clocks, which are usually discouraged) property. Of course this
is only a
This is a note on a site about some experiments to transmit information
faster than light. It fiddles with some definitions in the speed of
light restrictions in quantum theory.
the reason I am posting here is that it used Rubidium beams. The actual
publications may be of interest to those
Well, so given the goal (stability at tau, for example) find the best
measure and adjust rates (maybe they are not the same) given the
oscillator-to-be-disciplined characteristics.
On Mon, May 7, 2012 at 11:44 PM, Magnus Danielson
mag...@rubidium.dyndns.org wrote:
On 05/07/2012 10:59 PM,
Summary: I found some, 50 or so, 20 cents each. Contact me off-list (at
k6...@arrl.net) if you are interested.
The longer version:
My travels had me near a surplus place I hadn't visited in a while. Wandering
the aisles, I thought to myself, Self, there's a part we need for the PICTIC
II --
great find! the best I could find was $2 at qty 100
On Mon, May 7, 2012 at 3:49 PM, Bob Martin k6...@comcast.net wrote:
Summary: I found some, 50 or so, 20 cents each. Contact me off-list (at
k6...@arrl.net) if you are interested.
The longer version:
My travels had me near a surplus
Wow! $1260 for a 4' power cord, but wait, there's more... It was named
'Power Cord of the Year'.
Mike
On 5/7/2012 9:39 AM, Burt I. Weiner wrote:
A friend of mine signed me up for a catalog from the Audio Advisor.
He said I deserved this - I was afraid to ask what he meant by that!
Spend a
Hi, Guys I just purchased two Motorola UT+ Oncore GPS Timing Receiver 1pps
R5122U1154 pcb's. Does anyone have any information such as a schematic or
software on these.
Thankyou
Ken Kubick
kenkub...@hotmail.com
As usual you can find the UT+ manual but don't expect to find any
commercial GPS receiver schematic.
Try here:
www.tapr.org/gps_oncoreut.html
On Tue, May 8, 2012 at 1:01 AM, Ken Kubick kenkub...@hotmail.com wrote:
Hi, Guys I just purchased two Motorola UT+ Oncore GPS Timing Receiver
1pps
Guys,
this thread and the un-countable emails it has generated so far is the
exact type of discussion that TVB just sent out an email about that should not
be on time nuts.
bye,
Said
In a message dated 5/7/2012 16:00:54 Pacific Daylight Time,
mbla...@satx.rr.com writes:
Wow! $1260
On Mon, May 7, 2012 at 4:01 PM, Ken Kubick kenkub...@hotmail.com wrote:
Hi, Guys I just purchased two Motorola UT+ Oncore GPS Timing Receiver 1pps
R5122U1154 pcb's. Does anyone have any information such as a schematic or
software on these.
Some good links here
So it is not scientific information..just pseudo science.. like I
travelled back in Time yesterday !! But then I woke up.
Another cold fusion..
Alan G3NYK
- Original Message -
From: jim s j...@jwsss.com
To: time-nuts@febo.com
Sent: Monday, May 07, 2012 11:16 PM
Subject:
Ken,
You can find the UT+ Engineering Notes and the complete UT+/GT+ User's
Guide here:
http://www.synergy-gps.com/index.php?option=com_contenttask=viewid=35;
Itemid=60
We should have the legacy UT+ and M12+ firmware history and Firmware
Application Notes up at the same location in a couple of
not at all. read the summary, they are playing with group delay.
oh and by the way, there is some effect working with cold fusion. we
don't know what it is.
that's why it's called basic research. if we knew what we were doing
it wouldn't be called research
one more thing, people need to
Or here:
http://gpsd.berlios.de/vendor-docs/motorola/toc.pdf
http://gpsd.berlios.de/vendor-docs/motorola/ch1.pdf
http://gpsd.berlios.de/vendor-docs/motorola/ch2.pdf
http://gpsd.berlios.de/vendor-docs/motorola/ch3.pdf
http://gpsd.berlios.de/vendor-docs/motorola/ch4.pdf
On Mon, May 07, 2012 at 08:28:41AM -0700, J. Forster wrote:
A crummy crystal oscillator zero beated to WWV is good to 1 in 10E6, a Rb
disciplined to GPS maybe 1 in 10E11.
Do you seriously think you, or anybody, can hear a pitch difference of
0.001 Hz in the audio range?
A quartz crystal
It's kinda a trick question.
The important thing is 'before anyone could detect any differences in the
sound?'
I was involved in making a decision to go with brand A or B speakers in a
roughly 1200 seat auditorium. There was a lot of political pressure to
choose brand B. IMO, brand A sounded
MMmmm I still thing that NIST should know better it obviously getting
near appropriations time I think you call it !! It is not a connector that
is loose this time!
I may have access to Phys Rev Letters.
Alan
- Original Message -
From: Cliff Sojourner c...@employees.org
To:
On 05/08/2012 01:19 AM, Art Sepin wrote:
Ken,
You can find the UT+ Engineering Notes and the complete UT+/GT+ User's
Guide here:
http://www.synergy-gps.com/index.php?option=com_contenttask=viewid=35;
Itemid=60
We should have the legacy UT+ and M12+ firmware history and Firmware
Application
David,
I haven't been following this thread so I suppose it has already been
answered, but how are you measuring zero beat?
Lee Mushel
- Original Message -
From: David I. Emery d...@dieconsulting.com
To: j...@quikus.com; Discussion of precise time and frequency
measurement
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