Hi,
not exactly what you were asking, but I do know that Telefunken, and probably
some others, make chips that take care of all that stuff. You tell it which
continent you're on and they give you the proper time and so forth.
- Marcel

Jake Brownson <jbrownson@gmail.com> wrote:

> I was just reading about how the radio clock works, and the protocol
> used... seems like this would be a neat thing to do in a PIC project,
> anybody attempted this before? As far as I can tell.. Would need a
> 60KHz receiver and a timer to fire 3 (or probably more) times a second
> to check for high or low power, and some code to decode the signal.
> I'm actually working on a project involving a RTC, and do not want to
> allow the user to change the time manually, so this might be good if
> it doesn't involve to many external components...
> 
> For the receiver, Wouldn't a simple loop antenna tuned for 60KHz and a
> LC resonator, work? Then maybe use a cap to even out the signal, and
> transistor/opamp to amplify, maybe not in that order? Then just bring
> that into an analog input? Am I on the right track?
> 
> Here's some info on the signal:
> http://electronics.howstuffworks.com/question461.htm
> 
> Thanks for any guidance
> 
> ~Jake B




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