Manitoba Hydro wanted an IRIG-B decoder unit. It would listen to modulated IRIG-B, decode the time, and provide details of the time on a serial port. Filipe Fernandes and I did the system architecture. Filipe designed the board, based on a Motorola MC68HC11 development kit, and did the programming in assembly language.
The project was a success, but he was moved off to another project just as it was finishing, so I completed the programming. The design was a success.
This was my first exposure to IRIG-B, and I was fascinated.