[time-nuts] Chronometer contest sponsored by IEEE Spectrum

[Max Robinson]

That's not good news.  I guess I'll have to get one of those atomic watches. 
I think they receive their time reference from the GPS rather than WWVB.

Regards.

Max.  K 4 O D S.

Email: max at maxsmusicplace.com

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----- Original Message ----- 
From: "Chuck Harris" <cfharris at erols.com>
To: "Discussion of precise time and frequency measurement" 
<time-nuts at febo.com>
Sent: Saturday, December 01, 2007 8:44 AM
Subject: Re: [time-nuts] Chronometer contest sponsored by IEEE Spectrum


> Hi Max,
>
> I haven't seen a quartz watch with a trimmer capacitor
> in something like 20 years.
>
> What they do now days is use a microprocessor with flash ram, and
> the timing machine reprograms the microprocessor's second counter
> to trip at the right time.
>
> -Chuck Harris (amateur watchmaker)
>
> Max Robinson wrote:
>> In my experience watches come from the factory adjusted to gain about 5
>> seconds a month.  The ones I have owned over the years seemed to be 
>> fairly
>> stable in that.  I have always wished there was a way for someone who is 
>> not
>> a watch maker to open up such a watch and turn the trimmer capacitor, 
>> there
>> has to be one, to set it right on.  Then it would be much easier to tell 
>> how
>> the crystal is aging.
>>
>> Regards.
>
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