[time-nuts] WWV Clock

[Brooke Clarke]

Hi Bill:

My bad.

2 am is when the bars close.  Any change prior to then would be a problem.
After 2 pm there's not many who care.

Have Fun,

Brooke Clarke
http://www.prc68.com

Bill Hawkins wrote:
> Um, the time change takes place at 2 AM in the USA, springing ahead to
> 3 AM or falling back to 1 AM. This avoids repeating the date in the fall.
> 
> Surely, other cultures don't do it differently, do they?  ;-)
> 
> Bill Hawkins
> 
> It's widely true that the time of minimum human activity is 4:30 AM.
> Why not do it then?
>  
> 
> -----Original Message-----
> From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com] On
> Behalf Of Brooke Clarke
> Sent: Monday, November 02, 2009 9:50 AM
> To: Discussion of precise time and frequency measurement
> Subject: Re: [time-nuts] WWV Clock
> 
> Hi Mike:
> 
> Note that the way a clock checks to see of it has received the data
> correctly 
> is to compare two adjacent frames and check to see that they differ by one
> minute.
> 
> If the clock was smart it would start to listen a few minutes prior to
> midnight 
> and would recognize that there was going to be a DST change at midnight.
> 
> If the clock started at what it thought was midnight, but it was running a 
> second slow then it would miss the first frame, but the next minute it would
> 
> get the "new" frame and switch to/from DST.
> 
> I think your clock is just not receiving a good enough signal.  The key may
> be 
> you need to mount the clock on a wall that's 90 degrees from where it is
> now. 
> That's the problem I had with an atomic clock, i.e. the loopstick antenna
> has 
> deep nulls and if you point the null at the transmitter . . .  See:
> http://www.prc68.com/I/Shadow-Clock.shtml#WT5360U
> 
> I like the projection clock in my bedroom.  No glasses, no light needed to
> tell 
> the time.
> 
> Have Fun,
> 
> Brooke Clarke
> http://www.prc68.com
> 
> 
> 
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