My thought with the list is that it would form a core kit that you would carry with you on all hikes, overnight or day. Obviously, some things might change depending on whether your staying out overnight or just going for the day.

Good thought on the radio. If you're using an FRS or GMRS, not only should you list that on the trip plan you leave with your check-in person, but you should also list what channel you'll be monitoring and possibly even a back up channel.

HJ