http://docs.google.com/viewer?a=v&pid=explorer&chrome=true&srcid=1rcwEHlOK-VOaqox9Iwezhtmi1Kq7j7NUw9Ot-KQN7m27HVeAqoeebFpY5UoN&hl=en - FD SOPs - 2008 / 2011 - radio usage is somewhat complicated