[time-nuts] Nutty time-nuttery with WWVB

Ruslan Nabioullin rnabioullin at gmail.com
Thu Nov 10 16:52:03 EST 2016

On 11/10/2016 07:18 AM, Peter Reilley wrote:
> I have a few of those "atomic" clocks that receive WWVB to set the time.
> However since I live on the east coast they may only pick up the signal
> once or twice per year.
> Could I implement my own personal WWVB transmitter that would
> be powerful enough to be picked up by the clocks in my house?
> The signal at 60 KHz might be able to be produced directly by some
> sound cards.   With that and a ferrite rod antenna I might get
> reliable time elsewhere in my house outside of my lab.
> Has anyone tried this?
> Pete.

To be honest, this is very impractical and backward-thinking.  I would 
suggest instead upgrading to the Internet-of-things paradigm, replacing 
these time-of-day displays with full computers running NTP and connected 
to your LAN (Android smartwatches; repurposed old smartphones, tablets, 
laptops, etc.; and smartclocks [I'm certain that some Silicon Valley 
``genius'' has already come out with such an ``invention'' and the 
Chinese are churning out cheap knockoffs]), which will query your home 
metrology lab's NTP server(s), and instead using WWVB as an additional 
timing signal for diversifying your timing source portfolio (with a good 
antenna, of course), if you haven't done so already (though such 
products appear to be extremely sparse nowadays, for civilian-minded 
users have superficially reasoned that GPS is all that is necessary).


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