[jeffbee]

Slaving your clocks to GPS seems like it just gives the USAF space command a way to, eventually, wreck your operations. If you don’t have requirements for accuracy referenced to civil time (such as mifid 2) why wouldn’t you just go with the atomic clocks alone, with gps as an advisory-only monitoring reference?

[nullc]

Long term drift on these inexpensive secondary atomic clocks isn't that amazing, sadly.