I apologize for my tone, I meant for that post to be off-list.
I understand that "this clock" keeps time by counting 60 Hz, and I have
heard that the power company works pretty hard to count cycles and tweak
a little to keep clocks accurate.
Many of the NIXIE kits I've seen offered on eBay have a GPS input for
those who don't like setting clocks.
In most of the world, 60 Hz more than good enough. It certainly is if
you want accurate time to the second, and don't mind going to a little
trouble to set to an accurate source, like WWV.
I like clocks that set themselves. I was simply stating that those
exist if someone wants a retro-technology clock with some new-tech features.
-- Lynn
On 12/27/2013 6:18 PM, Walter Underwood wrote:
Phil asked about "this clock", and since there is only one clock on that site
which is a kit, I am pretty sure that we're discussing the clock built from this manual.
Please read it before deciding how it keeps time.
http://www.tubeclock.com/manual.pdf
If there are other Nixie clock kits, please share the information on those. A
nice gallery of built Nixie clocks is here:
http://www.electricstuff.co.uk/nixiegallery.html
wunder
K6WRU
On Dec 27, 2013, at 6:02 PM, "Lynn W. Taylor, WB6UUT"
<[email protected]> wrote:
There is a difference between "some" and "this."
All of the clocks here get their time via some network, or from the GPS
constellation.
On 12/27/2013 5:47 PM, Walter Underwood wrote:
According to the assembly manual, it uses the power line 60Hz as a frequency
reference. Last I heard, the utilities actually manage the frequency so the
long-term average is very close to 60Hz.
If you want real-time data on power line frequency, check out the FNET
measurement network. It looks like my grid is currently at 59.990.
http://fnetpublic.utk.edu/
wunder
On Dec 27, 2013, at 5:38 PM, "Lynn W. Taylor, WB6UUT"
<[email protected]> wrote:
Some NIXIE clocks use GPS for time, which is good enough for most purposes. :-)
On 12/27/2013 3:57 PM, Phil Kane wrote:
Don't mean to reopen the topic, but what is the accuracy of this clock?
______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[email protected]
This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[email protected]
This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
