Fascinating.
1. Does anyone know if they have different models for 50 and 60 Hz regions (or
is the internal software smart enough to differentiate)?
2. Any else think this is a questionable approach for a watch that is heavily
advertised (at least around here) as being great for the boating
Ouch, $3k! My $50 watch that talks to WWVB does just as good a job when
measuring it with my eye.
-Bob
On Wed, Apr 20, 2011 at 11:01 PM, Raj vu2...@gmail.com wrote:
This looks good!
http://www.ablogtoread.com/citizen-satellite-eco-drive-watch-gets-time-from-space/
At 21-04-2011, you
share.
Robert G8RPI.
--- On Wed, 20/4/11, Bill Hawkins b...@iaxs.net wrote:
From: Bill Hawkins b...@iaxs.net
Subject: Re: [time-nuts] 60hz disciplined watch (really?)
To: 'Discussion of precise time and frequency measurement'
time-nuts@febo.com
Date: Wednesday, 20 April, 2011, 19:33
Group
My orignal post that 60hz light flicker received at citizen ecodrive solarcells
is used to
discipline the watchs rate, needs a little correction to my post as brought to
my attention by the replies.
Yes it is actually 120hz flicker 60 positive cycle flickers and 60 negative
cycle flickers per
My orignal post that 60hz light flicker received at citizen ecodrive solarcells
is used to
discipline the watchs rate, needs a little correction to my post as brought to
my attention by the replies.
Yes it is actually 120hz flicker 60 positive cycle flickers and 60 negative
cycle flickers per
In message 29c8a27967ae5343be5ad7a887c9bd1a0f74332...@esi-sbs08.esi.lan, Davi
d VanHorn writes:
Further complicate this with larger buildings getting their power
from three-phase, and that in a given room, you may have lights on
two or more of those phases.
Seems rather doubtful that they are
In message op.vt8v9bt2unb...@indignity.dillberg.com, Christian Vogel writes
:
It may be different in the NordPool area, but my measurements do not
indicate much interest in time-stability here.
Even if it did, I see no way your wrist-watch could use it, given that
you need very long integration
My estimate of the citizen ecodrives automatic rate adjustment occures at 10
day intervals.
That only works if you can track the signal continuously.
Suppose you lose the signal for a while. How many cycles was that? If it's
only a short while and your clock is stable enough, you can
Robert Atkinson wrote:
Hi,
I think this is incorrect,
1/ My ecodrive that I bought in the USA does not run 20% slow here in the UK
2/What about incandesent lamps and those with inverters?
As has been pointed out in an earlier post detecting the second harmonic
modulation in the light output
tom jones wrote:
My orignal post that 60hz light flicker received at citizen ecodrive solarcells
is used to
discipline the watchs rate, needs a little correction to my post as brought
to my attention by the replies.
Yes it is actually 120hz flicker 60 positive cycle flickers and 60 negative
Most if not all Citizen ecodrive watches are disciplined by 60hz light flicker
that average
the 60hz light flicker over approximately 10 days before a rate adjustment is
preformed.
I have four citizen ecodrives;
Plain jane quartz analogue ecodrive with mechanical calendar that is 60hz
Do they detect the light flicker or the ambient ac field. Light flicker is
120 Hz.
Very interesting,
John WA4WDL
--
From: tom jones epoch_t...@yahoo.com
Sent: Wednesday, April 20, 2011 9:43 AM
To: time-nuts@febo.com
Subject: [time-nuts] 60hz
flicker or the ambient ac field. Light flicker is
120 Hz.
Very interesting,
John WA4WDL
--
From: tom jonesepoch_t...@yahoo.com
Sent: Wednesday, April 20, 2011 9:43 AM
To:time-nuts@febo.com
Subject: [time-nuts] 60hz disciplined watch
Most if not all
Le 20/04/2011 16:17, John Ackermann N8UR a écrit :
I wonder if it's smart enough to have a sanity check to determine
whether the line frequency is 50 vs. 60 Hz?
BTW -- I have an Ecodrive watch, but it's radio controlled (as well as
solar charging), so haven't seen any reference to this
-nuts] 60hz disciplined watch
Sent by:
time-nuts-boun...@febo.com
Le 20/04/2011 16:17, John Ackermann N8UR a écrit :
I wonder if it's smart enough to have a sanity check to determine
whether the line frequency is 50 vs. 60 Hz?
BTW -- I have an Ecodrive watch, but it's
In message banlktimuxps8gbxp99ra8ijzvheotp8...@mail.gmail.com, paul swed writ
es:
Thats what I also thought though did not plan to test it.
As for mains stability. They are indeed stable over time weeks and months
and are corrected.
Are you sure ?
Here in europe that was lost in the
On 4/20/11 8:26 AM, Poul-Henning Kamp wrote:
In messagebanlktimuxps8gbxp99ra8ijzvheotp8...@mail.gmail.com, paul swed writ
es:
Thats what I also thought though did not plan to test it.
As for mains stability. They are indeed stable over time weeks and months
and are corrected.
Are you sure ?
Hi Poul-Henning,
On Wed, 20 Apr 2011 17:26:15 +0200, Poul-Henning Kamp p...@phk.freebsd.dk
wrote:
In message banlktimuxps8gbxp99ra8ijzvheotp8...@mail.gmail.com, paul
swed writ es:
...
As for mains stability. They are indeed stable over time weeks and
months
and are corrected.
...
On 4/20/11 8:53 AM, Jim Lux wrote:
On 4/20/11 8:26 AM, Poul-Henning Kamp wrote:
In messagebanlktimuxps8gbxp99ra8ijzvheotp8...@mail.gmail.com, paul
swed writ
es:
Thats what I also thought though did not plan to test it.
As for mains stability. They are indeed stable over time weeks and
In message 4daf0b0d.4080...@earthlink.net, Jim Lux writes:
I found this in a generator interconnection agreement:
This frequency response control shall, when enabled at the direction of
CAISO, continuously monitor the system frequency and automatically
reduce the real power output of the
On 04/20/2011 05:26 PM, Poul-Henning Kamp wrote:
Are you sure ?
Here in europe that was lost in the privatization of the grid: Nobody
was charged with paying for the extra power needed to capture lost
cycles, so now they just try to keep it close to 50.0Hz and don't
care about the
On 4/20/11 9:39 AM, Poul-Henning Kamp wrote:
In message4daf0b0d.4080...@earthlink.net, Jim Lux writes:
I found this in a generator interconnection agreement:
This frequency response control shall, when enabled at the direction of
CAISO, continuously monitor the system frequency and
On 4/20/11 9:44 AM, Kasper Pedersen wrote:
The mainland Europe grid (which you are not on, I know..) looks like this:
http://n1.taur.dk/grid/plt.png
http://n1.taur.dk/grid/pltw.png (very large with grid)
y axis is phase in seconds, x axis is time
The plot is 130 days long, 60sec/130d= 5ppm
Group,
Google can't find anything for citizen ecodrive watch time sync 60 hz
except a few where the k was left out of 60 khz. All of the watches
that synched received WWVB at 60 KHz.
The claim of 13 millisecond accuracy from line frequency is suspect. There
is no control of the power grid to
On Wed, Apr 20, 2011 at 10:00 AM, Jim Lux jim...@earthlink.net wrote:
On 4/20/11 9:39 AM, Poul-Henning Kamp wrote:
In message4daf0b0d.4080...@earthlink.net, Jim Lux writes:
I found this in a generator interconnection agreement:
This frequency response control shall, when enabled at the
This looks good!
http://www.ablogtoread.com/citizen-satellite-eco-drive-watch-gets-time-from-space/
At 21-04-2011, you wrote:
Group,
Google can't find anything for citizen ecodrive watch time sync 60 hz
except a few where the k was left out of 60 khz. All of the watches
that synched received
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