I'm not a big fan of things that depend on batteries in an emergency. I
bought a "rescue whistle" from REI for five bucks...it is supposed to have a
one-half mile range.

Bob Gardner

wrote in message
ups.com...
I recently came across this electronic safety whistle and thought it to
be a no brainer for my (or any serious pilot's) flight bag. Thought I'd
share. http://www.davidsteele.com