[ChuckMcM]

This is a pretty neat thing and kudos for them open sourcing it. Typically, you'd have to hand over $5K - $25K for this card! This can hopefully make them available at a lower price.

I built something similar (although I didn't use a CSAC[1] since it was too expensive but I did have a nice OXCO which is pretty stable. I use a Raspberry Pi to distribute plain old TOD via NTP to my local network, but the 10 MHz output I send to my bench where I can use it for radio projects. It is actually a better clock source (frequency stability wise) than the precision time source in my HP spectrum analyzer but it has worse phase noise (jitter) because it does get corrected by up to +/- 20nS periodically.

[1] Chip Scale Atomic Clock - Microsemi -> Microchip https://www.microsemi.com/product-directory/clocks-frequency...