"Dozens of previously dismissed radio signals were actually credible
transmissions from Amelia Earhart, according to a new study of the
alleged post-loss signals from Earhart's plane."
http://www.msnbc.msn.com/id/47653021.../#.T8lTjL-9Uto
Some of the signals thought by these researchers to be valid were heard
by both commercial and amateur radio operators.
Patty