[time-nuts] LF time signal emulation

Tom Van Baak tvb at LeapSecond.com
Mon Apr 30 09:24:25 EDT 2007

> Because I like to stand on the shoulders of giants, has anyone actually
> done something like this? My skills are more in software development and
> hardware digital logic rather than in LF radio transmitters - so any
> help or pointing in the right direction would be appreciated.
> Regards,
> Jim Palfreyman

Yes, the following examples will generate a subcode:


Then use one of these TCO (time code output):


Then gate the output of a 60 kHz signal generator. I found
any piece of dangling wire was a sufficiently good antenna
to trigger reception in a WWVB radio clock.

I have untested versions for DCF77 also.


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