And a ton of older GPS-only hardware is still perfectly reliable and relevant. The recent week number roll-over forced some of the more decrepit junk to be repl

And a ton of older GPS-only hardware is still perfectly reliable and relevant. The recent week number roll-over forced some of the more decrepit junk to be replaced, but those with passable WNRO support are still in service despite being single-constellation. It'll be a long time before multi-constellation receivers are the norm, and even longer before they displace the majority of critical timing receivers and reference stations and stuff.