Jose Antonio Gracia Negre wrote:
>
>I have made clock/thermometer with 16f84 and I want that the hour this
fitting
>of automatic form
>
>That a system of synchronization of clocks by means of a radio signal
exists,
>but nonencounter Chips information or schemes.
>
>In Spain signals are received from French transmitters.
>
>It knows somebody of some direction or it has information on the
subject?

Give a look at   http://www.tapr.org/tapr/html/tac2.html
there is the project of a 'Totally accurate clock', along with links to
GPS related sites. It appears to be a very good but rather expensive
system.

Hope this helps

Greetings
Leonardo Perretti
leo.perretti@projectpp.it