[time-nuts] WWVB d-psk-r down conversion method...

Alexander Pummer alexpcs at ieee.org
Tue Sep 23 17:55:13 EDT 2014

Hi Brooke,
I hope that you are right with that chip, and despite the name change of 
the company -- now Xtendwave -- and recovering  they will deliver 
something some times. I can see that with correlation and averaging 
schemes the signal to noise ratio of data, perhaps constant frequency 
could be improved, but I would be very interested to see of the 
mathematical model of improving the signal to noise ratio of timing.

On 9/23/2014 1:08 PM, Brooke Clarke wrote:
> Hi Alex:
> Sometime in the future there will be chips that will decode the new 
> signals (note the "s" on the end of that last word).  There are a 
> number of frame times the longest one of which takes 17 minutes and is 
> transmitted only once per day.  This format offers 23 dB modulation 
> gain compared to the 1 minute time frame transmission that the current 
> clocks use.  There are a total of 5 different modulation formats that 
> will be transmitted over different time frames.  In the end everyone 
> should have a clock with more frequent updates (on the West coast I 
> might need to wait overnight for a clock to sync after a battery 
> change) and more accuracy.
> http://prc68.com/I/Loop.shtml#PhaseMod
> Have Fun,

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