[ntp:questions] Re: WWVB 60kHz Receiver

Richard B. Gilbert rgilbert88 at comcast.net
Sat Apr 15 23:25:54 UTC 2006

Jonathan Buzzard wrote:
> On Sat, 15 Apr 2006 09:33:49 -0400, Richard B. Gilbert wrote:
>>Possible?  Yes.  Probable?  No!  If you want to invest about $35 in an 
>>"atomic clock" You can hang it on your wall and check the reception 
>>indication several times during the work day.  If you get solid 
>>reception during daylight hours a WWVB receiver just might give you 
>>sub-millisecond accuracy.  If you lose signal during daylight hours, 
>>forget it!
> Except the clocks use very simplistic methods for decoding the signal.
> Something not to dissimilar to the current versions of radioclkd. However
> you can do much better than this.
> If you employ some advanced (well not that advanced really but it looks
> very impressive) statistical filtering to the signal you can still decode
> a signal when the basic methods fail utterly. I know the clocks are not
> doing this because it would require way more CPU power than the
> micro-controllers in them have.
> JAB.

Does anyone still make this sort of hardware?  Other than the occasional 
antiques available on e-Bay, I have not heard of any.

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