In message <[EMAIL PROTECTED]>, Magnus Danie
lson writes:
>From: "Poul-Henning Kamp" <[EMAIL PROTECTED]>
>Subject: Re: [time-nuts] Near-perfect chip for Loran-C frequency receiver
>Date: Thu, 03 Jul 2008 21:38:41 +
>Message-ID: <[EMAIL PROTECTED]>
>
>> In message <[EMAIL PROTECTED]>, Magnus Da
In message <[EMAIL PROTECTED]>, Carl Walker writes:
>On Fri, 2008-07-04 at 01:02 +0200, Magnus Danielson wrote:
>There's more than meets the eye initially when you attempt a receiver
>design of this type - at least as far as the analog section goes.
I hate to say so, but actual experience proces
Poul-Henning Kamp wrote:
> In message <[EMAIL PROTECTED]>, Carl Walker writes:
>
>> On Fri, 2008-07-04 at 01:02 +0200, Magnus Danielson wrote:
>>
>
>
>> There's more than meets the eye initially when you attempt a receiver
>> design of this type - at least as far as the analog section go
In message <[EMAIL PROTECTED]>, Bruce Griffiths writes:
>Poul-Henning Kamp wrote:
>You've misunderstood the problem.
No, you have, and you are barking up a different tree than I'm climbing.
Look at the subject, it says "... frequency receiver".
>If one wishes to decode the AM time code broadcas
Poul-Henning Kamp wrote:
> In message <[EMAIL PROTECTED]>, Bruce Griffiths writes:
>
>> Poul-Henning Kamp wrote:
>>
>
>
>> You've misunderstood the problem.
>>
>
> No, you have, and you are barking up a different tree than I'm climbing.
>
> Look at the subject, it says "... frequenc
In message <[EMAIL PROTECTED]>, Bruce Griffiths writes:
>Poul-Henning Kamp wrote:
>> Look at the subject, it says "... frequency receiver".
>>
>The meaning diverged/became ambiguous after Magnus made his post.
>My comments apply to the extended capability receiver that Magnus
>envisaged and no
You can try to ask to IV3NWV (Nico Palermo), the One who developed Perseus:
maybe he can say something about the feasibility of such "broadband"
receiver ...
Elio.
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Dear Time-Nuts,
I have been reading the discussion about what is possible and impossible
with the ARM evaluation board. The proposed idea(s) to build a versatile
receiver which could be used for receiving various time/frequency
reference transmitter around the world sounds great!
It is my beli
For your amusement...
Sitting in a waiting room yesterday, I read an article in a
very-high-end audio magazine describing a $15K Rubidium frequency
standard for providing low jitter clocks to your audio system. It has
outputs at 44.1, 48, etc. kHz, as well as a 100kHz, which the person
wr
Hi,
The announcement of a leapsecond end of this year just came in.
See: ftp://hpiers.obspm.fr/iers/bul/bulc/bulletinc.dat
Regards
David
This e-mail message contains information which is confidential and may be
privileged. It is intended for use by the addressee only. If you ar
Two leap seconds in as many years!
It must be that global warming.
-Chuck Harris
David Stelpstra wrote:
> Hi,
>
>
>
> The announcement of a leapsecond end of this year just came in.
>
> See: ftp://hpiers.obspm.fr/iers/bul/bulc/bulletinc.dat
>
>
>
> Regards
>
> David
_
In a message dated 04/07/2008 14:51:19 GMT Daylight Time,
[EMAIL PROTECTED] writes:
Sitting in a waiting room yesterday, I read an article in a
very-high-end audio magazine describing a $15K Rubidium frequency
standard for providing low jitter clocks to your audio system. It has
out
http://www.antelopeaudio.com/en/products_iso_10m.html
At 09:49 AM 7/4/2008, you wrote:
>For your amusement...
>
>Sitting in a waiting room yesterday, I read an article in a
>very-high-end audio magazine describing a $15K Rubidium frequency
>standard for providing low jitter clocks to your audio s
Greetings, all,
I need any of the compatible Communication Modules for the TDS 2024 DSO.
Specifically, the TDS2CMA, TDS2CMAX, TDS2MEM or any of these variants.
Please check with all of your colleagues, associates, and constituents for me
if you would be so kind.
Thank you in advance for any he
Quoting [EMAIL PROTECTED], on Fri 04 Jul 2008 08:01:04 AM PDT:
>
> In a message dated 04/07/2008 14:51:19 GMT Daylight Time,
> [EMAIL PROTECTED] writes:
>
> Sitting in a waiting room yesterday, I read an article in a
> very-high-end audio magazine describing a $15K Rubidium frequency
> standard
At 6:49 AM -0700 7/4/08, Jim Lux wrote:
>For your amusement...
>
>Sitting in a waiting room yesterday, I read an article in a
>very-high-end audio magazine describing a $15K Rubidium frequency
>standard for providing low jitter clocks to your audio system. It has
>outputs at 44.1, 48, etc. kHz, as
> ESOTERIC - G-0Rb MASTER CLOCK GENERATOR (RUBIDIUM)
…“esoteric”…
While I realize the absurdity of hooking up such a thing to your
CD player at home, there can be merits of having a centrally generated
and extremely accurate clock in a professional audio/video production
facility. When you are pas
From: Christian Vogel <[EMAIL PROTECTED]>
Subject: Re: [time-nuts] Rb references for audiophiles?
Date: Fri, 4 Jul 2008 18:59:51 +0200
Message-ID: <[EMAIL PROTECTED]>
> > ESOTERIC - G-0Rb MASTER CLOCK GENERATOR (RUBIDIUM)
> …“esoteric”…
>
> While I realize the absurdity of hooking up such a thing
Try putting the output of a CD or FM radio signal into a FFT based waterfall
display. An amazing number of songs, etc have very prominent 15734KHz and/or
15.625KHz harmonics that are obviously from CRT monitors in the recording
booth. Recording engineers ain't what they used to be...
You can
Chuck Harris wrote,
"Two leap seconds in as many years!
It must be that global warming."
Well, yes. The Earth expands from the heat, rotation slows,
and we get another leap second - as we watch symptom after
symptom occur while being unable to come to consensus on
what to do.
Bill Hawkins
__
Jim Lux said, in part,
"Hey... here's a golden opportunity for a time nut. I suspect they
generate the various clocks using (gasp) digital dividers and such.
Now's your chance to design an incredibly complex all analog synthesis
chain with step recovery diodes, mix and add, etc. Everyone
At 11:59 AM 7/4/2008, Christian Vogel wrote:
> > ESOTERIC - G-0Rb MASTER CLOCK GENERATOR (RUBIDIUM)
>
âesotericâ
>¦
>
>While I realize the absurdity of hooking up such a thing to your
>CD player at home, there can be merits of having a centrally generated
>and extremely accurate clock in a pro
I just got that bulletin. I will have to adjust all of the programs
using the update data from the Astronautic Almanac when the next one
is issued.
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If there is something smaller than a nit to pick in the grand scheme of
things, this may be it. Anyway - these days WWVB is running the depth at
17dB. Interesting info at
http://tf.nist.gov/timefreq/general/pdf/2139.pdf
Ed
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTE
---Jim wrote:
...they had the special speaker cables with the arrows to indicate
preferred direction of power flow, too)
---clip---
Jim, "directional" audio interconnect cables typically have two conductors
for the signal path, plus a shield. The shield is connected at only the
"destination"
Bill Hawkins wrote:
> Jim Lux said, in part,
>
> "Hey... here's a golden opportunity for a time nut. I suspect they
> generate the various clocks using (gasp) digital dividers and such.
> Now's your chance to design an incredibly complex all analog synthesis
> chain with step recovery diod
Bill Hawkins wrote:
> Chuck Harris wrote,
>
> "Two leap seconds in as many years!
>
> It must be that global warming."
>
>
> Well, yes. The Earth expands from the heat, rotation slows,
> and we get another leap second - as we watch symptom after
> symptom occur while being unable to come to con
In message: <[EMAIL PROTECTED]>
"Ronald Held" <[EMAIL PROTECTED]> writes:
: I just got that bulletin. I will have to adjust all of the programs
: using the update data from the Astronautic Almanac when the next one
: is issued.
Yes, this is one of the problems with leap seconds.
Opin
No, no, no... you must use dekatrons for your dividers. Solves many
audiophile requirements at one time... vacuum tube, nifty spinning glowing
thingies you can watch though cutout windows, endless entertainment for dope
addled brains, err uhhh I forget the rest.
> Jim Lux said, in part,
No, I think it's just a vast conspiracy :-)
Didier KO4BB
> -Original Message-
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED] On Behalf Of Chuck Harris
> Sent: Friday, July 04, 2008 9:14 AM
> To: Discussion of precise time and frequency measurement
> Subject: Re: [time-nuts] New l
These are still available from Tektronix, even though last time I checked,
you can buy a working Tek 2430 storage scope on eBay for less.
I have one in my TDS-210, but I would not give it up for anything (oh well,
almost anything...)
Didier KO4BB
> -Original Message-
> From: [EMAIL PROT
On the 4th July it (the Sun) was actually at its furtherst point from earth
so we were getting less radiation .did your burghers take longer to cook
?? :-))
Alan G3NYK
- Original Message -
From: "Chuck Harris" <[EMAIL PROTECTED]>
To: "Discussion of precise time and frequency measurem
Chuck Harris commented
Two leap seconds in as many years!
It must be that global warming.
-Chuck Harris
UT1 is the time measured with respect to the stars, while UTC and TAI
are based on the rate of laboratory atomic clocks; I like to say that
UT1 is the time you would
What about a chain of E1T tubes? A lot nicer! ;)
And... why mess with noisy Rb references? A true audiophile has a
H-maser, of course ;)
Mark Sims escribió:
> No, no, no... you must use dekatrons for your dividers. Solves many
> audiophile requirements at one time... vacuum tube, nifty spin
Bahhh, a TRUE audiophile has three H-masers. You just can't trust your
favorite recording of Thick as a Brick to a single reference clock. You need a
realtime thee-cornered hat voter/selector to chose the best one. But masers do
meet the number one audiophile requirement of a having a glowi
On Jul 3, 2008, at 7:16 PM, Carl Walker wrote:
> On Fri, 2008-07-04 at 01:02 +0200, Magnus Danielson wrote:
>>> The analog side would need to allow for those signals also then.
>>
>> Naturally. The antenna-amplifier design will need to be more wideband
>> oriented. Should not be too hard thought.
In message <[EMAIL PROTECTED]>, "Bill Hawkins" writes:
>Well, yes. The Earth expands from the heat, rotation slows, [...]
You're right, but from my back of the envelope calculation, it's
negligble.
Most of the expected expansion is the water in the oceans, which
expand roughly 10^-4 per Kelvin i
In message <[EMAIL PROTECTED]>, "Thomas A. Frank" wr
ites:
>In as much as we know exactly the frequencies of interest, perhaps
>the analog front end could consist of multiple signal paths with very
>narrow band filters to separate out the signals of interest (a 60 kHz
>channel, a 100 kHz cha
Quoting Mark Sims <[EMAIL PROTECTED]>, on Fri 04 Jul 2008 04:02:49 PM PDT:
>
> Bahhh, a TRUE audiophile has three H-masers. You just can't trust
> your favorite recording of Thick as a Brick to a single reference
> clock. You need a realtime thee-cornered hat voter/selector to
> chose
Quoting Greg Burnett <[EMAIL PROTECTED]>, on Fri 04 Jul 2008 11:54:35 AM PDT:
> ---Jim wrote:
> ...they had the special speaker cables with the arrows to indicate
> preferred direction of power flow, too)
> ---clip---
>
> Jim, "directional" audio interconnect cables typically have two conducto
Another one from the old 36 foot NRAO telescope files - the HP 113BR
analog clock unit.
http://www.nixiebunny.com/hp113br.pdf
Enjoy.
Does anyone think Agilent is interested in a manual for something
this old, or is this more of an HP Archives sort of boatanchor?
I also have a 103AR manual to s
Jim Lux wrote:
>
> That one I'm familiar with.. (SpaceWire cables, for instance, have 4
> shielded twisted pairs, 2 in each direction, with the shields grounded
> at the sending end for each pair of pairs)...
>
>
> These were just plain old two (gold/palladium plated) pins for each
> "cable"
Quoting Bruce Griffiths <[EMAIL PROTECTED]>, on Fri 04 Jul
2008 05:47:53 PM PDT:
> Jim Lux wrote:
>>
>> That one I'm familiar with.. (SpaceWire cables, for instance, have 4
>> shielded twisted pairs, 2 in each direction, with the shields grounded
>> at the sending end for each pair of pairs)...
Poul-Henning Kamp wrote:
> In message <[EMAIL PROTECTED]>, "Thomas A. Frank" wr
> ites:
>
>
>> In as much as we know exactly the frequencies of interest, perhaps
>> the analog front end could consist of multiple signal paths with very
>> narrow band filters to separate out the signals of int
Talking about magnets and skin depth, I recall an incident back in the early
to mid 60's. I was living on Long Island at the time and had many friends
who worked at Brookhaven National Laboratory. Needless to say I had numerous
tours of the facility. At one time I was given a tour of the cryogenic
On Friday 04 July 2008 03:07:47 pm Chuck Harris wrote:
> > Well, yes. The Earth expands from the heat, rotation slows,
> > and we get another leap second - as we watch symptom after
> > symptom occur while being unable to come to consensus on
> > what to do.
>
> I say that we take up the issue wit
[EMAIL PROTECTED] said:
>In case anyone is interested, here is the actual UT1-UTC data
> produced by the group I headed for many years (until I
> retired in 2001):
Nice graphs. Thanks.
What is cusaing the bumps? Why are they now big enough to see easily but
much smaller a while ago. Th
David, I forwarded your announcement to the same Agilent friend (who works
at the Agilent U.S. Technical Call Center and who handled your 105A/B manual
contribution). ...And I asked if Agilent is interested in manuals for the
very old, rare items like the 113BR.
I'll also ask if Agilent has an
In message <[EMAIL PROTECTED]>, Bruce Griffiths writes:
>Poul-Henning Kamp wrote:
>> Look at:
>> http://phk.freebsd.dk/misc/L6/
>>
>Nonsense, although it may work in favourable cases where the signal
>levels arent too disparate, in the more general case this isnt true.
Bruce, you are inp
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