Stealth Pilot wrote:
I dont know why you object so strongly. the new 406 machines are
encoded so that the rescue people can look up who's elt has gone off.

The issue isn't with regard to technical aspects of 406.0/.1 vs 121.5, but
that the grace period between the required-by date and announcement date is
so short. It seems probable there simply wouldn't be enough 406 ELTs on
hand in the U.S. to cover the short term demand, among other problems.