ge -
From: "Bob Camp"
To: "'Tom Van Baak'" ; "'Discussion of precise time and
frequency measurement'"
Sent: Friday, September 14, 2012 9:14 AM
Subject: RE: [time-nuts] RE; New Wrist watch
> Hi
>
> Seconds per 30 day month turned out
] On
Behalf Of Tom Van Baak
Sent: Friday, September 14, 2012 8:17 AM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] RE; New Wrist watch
> So, does this unit include an input for a external reference? I would
> be interested in knowing what they use for a
> So, does this unit include an input for a external reference? I would
> be interested in knowing what they use for a timing reference...
>
> :)
>
> Dan
Last I checked with Bryan, he has XO and TCXO and GPS options for the Microset
timer.
Realize that most traditional watch/clock people are c
On 9/14/2012 8:00 AM, time-nuts-requ...@febo.com wrote:
For those of you interested in timing mechanical clocks or watches, a wonderful
site to visit is:
http://www.bmumford.com/microset.html
/tvb
So, does this unit include an input for a external reference? I would
be interested in knowin
The accuracy of 32 kHz-based quartz wristwatches with analog hands can easily
be measured with magnetic pick-up. Even if the 32 kHz acoustic or EM field is
too low to sense, the tiny 1 Hz stepper motor creates a large sharp spike,
which is much easier to detect. Here's an example from my watch:
Hmm,
Imagine that!
And yet you still can detect its E-M field with a loop of wire,
or its sonic signature with a microphone.
-Chuck Harris
Bob Camp wrote:
Hi
A magnetically driven tuning fork is a *very* different beast than a modern
watch crystal….
Bob
On Sep 13, 2012, at 6:15 PM, Chuck
;
>> -Original Message-
>> From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
>> Behalf Of Azelio Boriani
>> Sent: Thursday, September 13, 2012 4:45 PM
>> To: Discussion of precise time and frequency measurement
>> Subject: Re
l Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
Behalf Of Azelio Boriani
Sent: Thursday, September 13, 2012 4:45 PM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] RE; New Wrist watch
OK, listening to the 32KHz EM field, not t
alf Of Azelio Boriani
> Sent: Thursday, September 13, 2012 4:45 PM
> To: Discussion of precise time and frequency measurement
> Subject: Re: [time-nuts] RE; New Wrist watch
>
> OK, listening to the 32KHz EM field, not to the acoustic 32KHz.
>
> On Thu, Sep 13, 2012 at 8:08 PM,
.@febo.com [mailto:time-nuts-boun...@febo.com] On
Behalf Of Azelio Boriani
Sent: Thursday, September 13, 2012 4:45 PM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] RE; New Wrist watch
OK, listening to the 32KHz EM field, not to the acoustic 32KHz.
On Thu, Sep 13,
On 9/13/2012 4:45 PM, Azelio Boriani wrote:
OK, listening to the 32KHz EM field, not to the acoustic 32KHz.
I'm impressed by your special powers.
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; From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
>> Behalf Of Christopher Quarksnow
>> Sent: Wednesday, September 12, 2012 5:39 PM
>> To: Discussion of precise time and frequency measurement
>> Subject: Re: [time-nuts] RE; New Wrist watch
>>
>
time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
Behalf Of Christopher Quarksnow
Sent: Wednesday, September 12, 2012 5:39 PM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] RE; New Wrist watch
There are many Wave Ceptor LCD versions such as W
You could try listening with an electromagnetic pickup, like the ones we
used to stick on telephone handsets to record conversations.
Ron
On 9/12/2012 5:21 AM, Azelio Boriani wrote:
Interesting: trying to "hear" a low frequency crystal using a microphone...
it should be hard: the crystal has t
om: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
Behalf Of Christopher Quarksnow
Sent: Wednesday, September 12, 2012 5:39 PM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] RE; New Wrist watch
There are many Wave Ceptor LCD versions such as WVM120J-1 (
There are many Wave Ceptor LCD versions such as WVM120J-1 (about $27) or
WV59A-1AV (about $49) that might not have the spin issue.
Chris
On Sun, Sep 9, 2012 at 4:34 PM, Robert Darlington wrote:
> The waveceptor's are okay but I can't wear mine much because I tend to
> cross timezones a lot.
The small microphone is not a problem: I've used a small mic from a
cellphone to make an audio downconverter used as a bat detector, I can try
with that hardware first.
On Wed, Sep 12, 2012 at 6:55 PM, Randy D. Hunt wrote:
> On 9/12/2012 2:21 AM, Azelio Boriani wrote:
>
>> Interesting: trying to
On 9/12/2012 2:21 AM, Azelio Boriani wrote:
Interesting: trying to "hear" a low frequency crystal using a microphone...
it should be hard: the crystal has to make the case vibrate and this is
energy consuming (unless it resonates). I don't expect to pick up nothing,
except the step motor driving
t: Re: [time-nuts] RE; New Wrist watch
OK, I'll try but I think this is not a dark ages practice: hearing a very
small vibration is related to low noise and small signal techniques. It is
way easier to hear a mechanical escapement.
On Wed, Sep 12, 2012 at 2:30 PM, Bob Camp wrote:
> Hi
&
ssion of precise time and frequency measurement
Subject: Re: [time-nuts] RE; New Wrist watch
If I recall correctly it was in RF Design magazine many years ago that a
short article included a schematic for using an ultrasonic sensor and selective
amplifier (narrowband PLL?) to pick up the 32KHz vi
.com] On
> Behalf Of Azelio Boriani
> Sent: Wednesday, September 12, 2012 5:22 AM
> To: Discussion of precise time and frequency measurement
> Subject: Re: [time-nuts] RE; New Wrist watch
>
> Interesting: trying to "hear" a low frequency crystal using a microphone...
> it sho
If I recall correctly it was in RF Design magazine many years ago that a
short article included a schematic for using an ultrasonic sensor and selective
amplifier (narrowband PLL?) to pick up the 32KHz vibration and convert it to a
measurable signal. I'd expect a normal microphone to pick up way
ehalf Of Azelio Boriani
Sent: Wednesday, September 12, 2012 5:22 AM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] RE; New Wrist watch
Interesting: trying to "hear" a low frequency crystal using a microphone...
it should be hard: the crystal has to make
On Sun, Sep 9, 2012 at 10:34 PM, Robert Darlington
wrote:
> The waveceptor's are okay but I can't wear mine much because I tend to
> cross timezones a lot. The hands only run in one direction so when
> going to the west, it has to spin 11 hours forward. This takes 20
> minutes. I guess it's on
Interesting: trying to "hear" a low frequency crystal using a microphone...
it should be hard: the crystal has to make the case vibrate and this is
energy consuming (unless it resonates). I don't expect to pick up nothing,
except the step motor driving the hands.
On Wed, Sep 12, 2012 at 9:45 AM, H
> I have a $49 Casio Wave Ceptor, white face black numerals, analog hands
> including second hand, date, alarm and WWVB syncing in the middle of the
> night. Only had to replace the battery once and it ticks are closer than I
> can discern when comparing to WWV @ 10or 15 Mhz.
Has anybody "listen
On 9/11/2012 11:58 AM, David McGaw wrote:
Curious. Civil time is based on UTC, not GPS. Shouldn't the "smart"
phones account for the difference from GPS time? We have the technology.
The problem is, Google doesn't have a clue. The issue was first reported
to them almost 3 years ago -
http:
Curious. Civil time is based on UTC, not GPS. Shouldn't the "smart"
phones account for the difference from GPS time? We have the technology.
BTW, my Verizon CDMA "dumb" phone is currently only 1 second ahead, NOT
16 secs.
David
On 9/11/12 11:48 AM, James Tucker wrote:
On Mon, Sep 10, 20
On Mon, Sep 10, 2012 at 5:50 PM, Mike S wrote:
> On 9/10/2012 6:36 PM, Bob Smither wrote:
>>
>>
>> May not be redundant for time nuts! I have an NTP client on my Android and
>> it
>> shows the network time (Sprint in my case) is often as much as 2 seconds
>> behind UTC.
>
>
> So that makes it, wha
On 09/10/2012 06:36 PM, Bob Smither wrote:
May not be redundant for time nuts! I have an NTP client on my Android and it
shows the network time (Sprint in my case) is often as much as 2 seconds behind
UTC.
Anyone else noticed this?
It may not really be using network time, or not using it pro
On 9/10/2012 6:36 PM, Bob Smither wrote:
May not be redundant for time nuts! I have an NTP client on my Android and it
shows the network time (Sprint in my case) is often as much as 2 seconds behind
UTC.
So that makes it, what, 21 seconds off? It should be 19 seconds ahead of
UTC, since Spri
On 09/10/2012 10:02 AM, Tom Knox wrote:
>
> I think any Time Nut worth his salt should own a tourbillon watch, or
> several. Some would consider these a bargain compared to a new Hydrogen
> Maser. If a tourbillon does fit your budget Citizen makes many great watches.
> After breaking my third $100
GUT (Gallifree Universal Time) of course.
Dave
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf
Of Don Latham
Sent: 10 September 2012 18:39
To: Tom Van Baak; Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] Re
.
Thomas Knox
> Date: Mon, 10 Sep 2012 11:39:29 -0600
> From: d...@montana.com
> To: t...@leapsecond.com; time-nuts@febo.com
> Subject: Re: [time-nuts] Re; New Wrist watch
>
> Oh Boy. Just occurred to me; what reference is used in the Tardis
> Don
>
> Tom Van Baa
Hello!
El 10/09/2012 19:33, Tom Van Baak escribió:
Ah, "done with it" you say? No, that only begins a whole new set of problems.
Setting to UTC begs the question: what time frame are you in and whose definition of a
second is your watch counting.
Some time ago we supplied a customer in Germa
Oh Boy. Just occurred to me; what reference is used in the Tardis
Don
Tom Van Baak
>> Bob;
>>
>> Being this is Time-Nuts and all, shouldn't you be using UTC anyway? ;)
>>
>> Rich
>
>> He's making a joke - If you are traveling across time zones, why not
>> just set it to UTC and be done with it
> Bob;
>
> Being this is Time-Nuts and all, shouldn't you be using UTC anyway? ;)
>
> Rich
> He's making a joke - If you are traveling across time zones, why not
> just set it to UTC and be done with it? :-)
>
> David
Ah, "done with it" you say? No, that only begins a whole new set of proble
On 9/10/12 6:57 AM, David McGaw wrote:
He's making a joke - If you are traveling across time zones, why not
just set it to UTC and be done with it? :-)
David
This is a bigger deal than one might think. Especially since calendaring
software tries to be helpful and adjust things. So while y
t; To: n1...@alum.dartmouth.org; time-nuts@febo.com
> Subject: Re: [time-nuts] Re; New Wrist watch
>
> On Mon, Sep 10, 2012 at 4:04 PM, David McGaw wrote:
> > It was mentioned a while back that there are watches that are temperature
> > compensated. I would be interested in knowing which are.
As with the original chronometers, it is not the drift that is
important, but the stability of the drift. If you know that then getting
the correct time is simple arithmetic. That said, if you want to get low
drift numbers, a number of movements have been and are available to
improve on the ave
On Mon, Sep 10, 2012 at 4:04 PM, David McGaw wrote:
> It was mentioned a while back that there are watches that are temperature
> compensated. I would be interested in knowing which are. The self-setting
> ones are nice and I have one, but I am often in places that are not in range
> the transmi
It was mentioned a while back that there are watches that are
temperature compensated. I would be interested in knowing which are.
The self-setting ones are nice and I have one, but I am often in places
that are not in range the transmitter (Greenland, Antarctica for
instance) and I would lik
He's making a joke - If you are traveling across time zones, why not
just set it to UTC and be done with it? :-)
David
On 9/10/12 7:57 AM, Azelio Boriani wrote:
Precision is precision, whatever time scale you use. UTC, CET, TAI, use
what you want but stability and accuracy is the must.
On M
Precision is precision, whatever time scale you use. UTC, CET, TAI, use
what you want but stability and accuracy is the must.
On Mon, Sep 10, 2012 at 1:22 PM, Rich and Marcia Putz wrote:
> Bob;
>
> Being this is Time-Nuts and all, shouldn't you be using UTC anyway? ;)
>
> Rich
> _
Bob;
Being this is Time-Nuts and all, shouldn't you be using UTC anyway? ;)
Rich
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I have a Junghans. I can't say it is easy on the batteries. Otherwise they
work. I regret not getting the glows in the dark version.
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The waveceptor's are okay but I can't wear mine much because I tend to
cross timezones a lot. The hands only run in one direction so when
going to the west, it has to spin 11 hours forward. This takes 20
minutes. I guess it's one way to kill time on an airplane.
-Bob
On Sun, Sep 9, 2012 at 1:
I have a $49 Casio Wave Ceptor, white face black numerals, analog hands
including second hand, date, alarm and WWVB syncing in the middle of the night.
Only had to replace the battery once and it ticks are closer than I can discern
when comparing to WWV @ 10or 15 Mhz.
Rich, W9ENG
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