[time-nuts] RE; New Wrist watch

Thu Sep 13 22:15:33 UTC 2012

It turns out that watch timing machines are available that
sense the watch crystal both ways.  The same was true in
the days of the Accutron tuning fork watch... thought the
more reliable timing machines used a loop to sense the
magnetic field of the drive coils.

The big problem is most such watches no longer use trimmer
capacitors to adjust the timing, but rather store counter
values in a tiny bit of flash ram... absent the manufacturer's
blessing, and a bit of equipment they sell to their authorized
service centers, you probably won't be adjusting the watch's
timing constants.

-Chuck Harris

Bob Camp wrote:
> Hi
>
> A watch module is *very* low power. There's not much EM field running
> around. What there is relates to many things going on, not just the crystal.
> It's *much* easier to pick up the acoustic signal and use it to drive a
> counter.
>
> Bob
>
> -----Original Message-----
> From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at 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, 2012 at 8:08 PM, Ron Frazier (TImeN) <
> timenutslist at techstarship.com> wrote:
>
>> My watch is also digital, but I wanted to put a word in for my Casio.
>>   It's the G-Shock MT-G, module 2638.  Auto sets, auto charges, 200 M water
>> resist if I ever need it.  I love it.  It was around $ 100.  I live in GA
>> in the USA.  It sets very reliably but can only receive the signal well
>> enough in the middle of the night.  It's only ever missed one or two
>> setting times.  I've had it since January 2012.  I don't know how it
>> handles time zone changes.  I would probably have to look in the manual to
>> figure out how to tell it.
>>
>> Ron
>>
>> On 9/13/2012 12:23 PM, Bob Camp wrote:
>>
>>> Hi
>>>
>>> The WV-58A at $28 takes care of the time zone thing pretty well. It's
> also
>>> cheap enough to be a throw away if it's damaged. Since it's pure digital,
>>> it's really not going to meet the "I need a second hand" requirement...
>>>
>>> Bob
>>>
>>> -----Original Message-----
>>> From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at 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 (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
>>> <rdarlington at gmail.com>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 one way to kill time on an airplane.
>>>>
>>>> -Bob
>>>>
>>>> On Sun, Sep 9, 2012 at 1:12 PM, Rich and Marcia Putz<rputz at bnin.net>
>>>>
>>>> wrote:
>>>>
>>>>
>>>>> 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
>>>>>
>>>>> _______________________________________________
>>>>> time-nuts mailing list -- time-nuts at febo.com
>>>>> To unsubscribe, go to
>>>>>
>>>>>
>>>> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
>>>>
>>>>
>>>>> and follow the instructions there.
>>>>>
>>>>>
>>>> _______________________________________________
>>>> time-nuts mailing list -- time-nuts at febo.com
>>>> To unsubscribe, go to
>>>> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
>>>> and follow the instructions there.
>>>>
>>>>
>>>>
>>> _______________________________________________
>>> time-nuts mailing list -- time-nuts at febo.com
>>> To unsubscribe, go to
>>> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
>>> and follow the instructions there.
>>>
>>>
>>>
>>> _______________________________________________
>>> time-nuts mailing list -- time-nuts at febo.com
>>> To unsubscribe, go to
>>> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
>>> and follow the instructions there.
>>>
>>>
>>>
>>
>> --
>>
>> (To whom it may concern.  My email address has changed.  Replying to
> former
>> messages prior to 03/31/12 with my personal address will go to the wrong
>> address.  Please send all personal correspondence to the new address.)
>>
>> (PS - If you email me and don't get a quick response, don't be concerned.
>> I get about 300 emails per day from alternate energy mailing lists and
>> such.  I don't always see new messages very quickly.  If you need a
>> reply and have not heard from me in 1 - 2 weeks, send your message again.)
>>
>> Ron Frazier
>> timekeepingdude AT techstarship.com
>>
>>
>> _______________________________________________
>> time-nuts mailing list -- time-nuts at febo.com
>> To unsubscribe, go to
>> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
>> and follow the instructions there.
>>
> _______________________________________________
> time-nuts mailing list -- time-nuts at febo.com
> To unsubscribe, go to
> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
> and follow the instructions there.
>
>
>
> _______________________________________________
> time-nuts mailing list -- time-nuts at febo.com
> To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
> and follow the instructions there.
>