[time-nuts] Homebrew WWVB TX simulator?

Hal Murray hmurray at megapathdsl.net
Tue Sep 14 21:49:42 UTC 2010

> Maybe a PIC to do the modulations trains and a serial interface to set  it
> up. In all about 3-4 chips. Should not be too hard. 

Why do you need more than one chip?

Why can't the PIC generate the 60 KHz signal by bit banging a couple of pins? 
 I'm thinking of a 2 or 3 bit D/A with 2 or 3 more pins for the low power 
portion of the signal.

1 bit might be enough with a good external filter.

I wonder what the range would be using 2 feet of wire for an antenna.  Do you 
want to fix your neighbors clocks too?

These are my opinions, not necessarily my employer's.  I hate spam.

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