Radio broadcasting is an effectve vehicle for providing literacy and fundamental education for large numbers of people with a reasonable investment of time, money, and human energy. This monograph, addressed to literacy workers in the rural areas of the Third World, offers practical suggestions for establishing literacy programs based on radio production. Topics discussed include the following: reasons why radio is effective in reaching large numbers of learners; the audience--their basic needs, attitudes, and preferences; program planning and development; production and distribution; effective use of the radio, including prebroadcast activities and follow-up games and puzzles to expand basic skills; maintenance of literacy skills for new literates and inservice programs for field workers; evaluation and effective feedback; and sources of information on mass media in adult education. (MAI)