@ldcd@social.treehouse.systems Symmetricom sa.22c. I also have two GPS sources (Stanford Research FS752 and Leo Bodnar LeoNTP, and gave my Leo Bodnar GPSDO to a friend but could probably borrow it back if I needed it). I've done some cool comparisons of the FS752 against the rubidium but I'm curious how much of the weird behavior I saw in some bits was the GPS disciplining loop and how much was just frequency drift of the rubidium