On Sunday (01/14/2024 at 09:55PM -0600), Chris Elmquist via cctalk wrote:
There are a number of WWVB simulator projects out
there that will transmit a weak but usable signal to your clock after getting sync’d from
ntp or GPS NMEA time messages. They were developed to help people develop receivers :-)
One in particular uses an AVR and it should be pretty simple to make it do the “old
protocol”. You’d then hide this behind your clock and it will sync to it instead of the
actual WWVB signal. Solves the protocol problem and the weak signal problem from real
WWVB with one little circuit.
If Google does not provide, I can dig up some links tomorrow.
Hmm. Strange. I did follow-up shortly after the above post with this
link,
https://www.instructables.com/WWVB-Simulator/
but I don't see that that made it to the list.
Chris
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Chris Elmquist