[Elecraft] OT: Nixie clock

[Mark Bayern]

>>"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.

... well, there appear to be at least two clocks on the tubeclock.com
website. One that uses the IN-12, and one that uses the IN-14 nixie
tube. There is also another totally separate business (KABtronics)
that sells a discrete nixie clock kit at tube-clock.com.

The tubeclock.com website is confusing. In the manual for the IN-12
clock, the utility 60Hz is used for the time base. The website's FAQ
says, "The IN-14 clocks use a crystal oscillator to keep track of
time. The default accuracy of the oscillator is 20 parts per million
(0.002%)."

The tube-clock.com website which has the totally discrete nixie clock
uses the utility 60 (or 50) Hz as a timebase.

Mark AD5SS

On Fri, Dec 27, 2013 at 8:18 PM, Walter Underwood <wunder at wunderwood.org> 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" <KX3 at ColdRocksHotBrooms.com> 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" <KX3 at ColdRocksHotBrooms.com> 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?
>>>
>>>
>>>
>
>
>
>
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