wrong, wrong, wrong
The EH101 was civil certified WITH a 30 minute capability in 1994, (EH101-300 and -500 series aircraft) by the CAA, FAA and RAI.
This was amended in 1998 (?) for the -510 variant which the Tokyo police force are still flying as a civil registered aircraft that is fully comliant with the relevant civil regulations.
regardless the same transmission is in use with military 101s with the same 30 minute capability (anybody here got access to a set of Merlin FRCs?)
so it's not just the 139
DM