Hit_Factor
Member
It's instantaneous if the GPS has a lock, it's also for analog repeaters, not just DStar.I would also not wait to perform a GPS search with the 5100 to find nearby D-Star repeaters either. Just program the nearby analog repeaters and be ready, regardless of radio. Contact one or two local amateur clubs and they should be able to provide an accurate list.
Either way this feature is probably not particularly useful in this use case.
I'm still puzzled why the Fire Chief thinks amatuer radio is a resource he needs to talk to.