[Animats]

How resistant is this to a GPS attack? It has an atomic clock, so it should be producing good data for days while sending alarms in the event the GPS data is bogus. You don't want to create a situation where someone aims a small dish at the roof of your data center and takes down the networking.

[abyagowi]

I have been working on a version with two GNSS receivers L1/L2 and L1/L5. The SA53 receives two PPS inputs and that allows you to detect Spoofing and Jamming. Again, I like to emphasize, this is not a done work. We shared whatever we had and we would love to have the community to contribute and help making it better. I love to have as many applications as possible for this Time Card. For example, I am looking for someone willing to port/write a Windows driver for the time card. With regards to the VHDL code; we are working with NetTimeLogic on a version without the need of any of theirs proprietary IPs. Meanwhile, we provided you with whatever we have and we look forward to working with you. Please feel free reach out to me if you like to collaborate on this project.