Few people understand more about indigenous clandestine radio broadcasting than Owen Williamson. Since the late 1970's, he has followed developments in guerilla broadcasting and has even witnessed - through live radio programs - the Sandinista Revolution of Nicaragua in 1979, the civil war in El Salvador during the 1980's, and U.S. psychological warfare on Cuba.

A leader in the field, Mr Williamson has also written on clandestine radio for such publications as Military History and Popular Communications. He maintains an extensive collection of audio recordings spanning over six decades of opposition radio stations from around the world.

Mr Williamson obtained his Masters in English at the University of Texas, El Paso, is fluent in Spanish, and reads Portugese, French, Latin and Greek. With the help of his wife, Rose, he also works with audio material in Hindi, Bengali, Punjabi and Urdu.