One of my customers, Bob, approached me if it would be possible to connect nwts to this Jeff Thomas GPSII clock.
I answered that if it supported TTL or RS232 for the signal and NMEA messages, it should work...
Well, not so fast. As Bob noticed, it looked like nothing was happening after plugging nwts to the clock.
Contacting John Miktuk (oldvan.com) who designed the software of the GPSII clock, it was clear that my nwts device was not sending the NMEA string as required by this clock.
A small correction on the code, lot's of hardware work from Bob and now nwts is also syncing a piece of Nixie clock history!
Thanks Bob for the valuable input on nwts!
You can learn more about this piece of history at tubeclockdb.com