AS early as 1929, The Christian Science Monitor was broadcasting on AM (Medium Wave) in the United States. Monitor shortwave broadcasts began in 1935; both continued until 1955.
Monitor radio broadcasting resumed in 1984 on the American Public Radio network weekends, with daily broadcasts beginning in 1985. With the completion of construction in 1987, WCSN in Scotts Corners, Maine, began broadcasting The World Service of The Christian Science Monitor (now Monitor Radio International) on shortwave to Europe and Africa. It was joined in 1988 by KYOI on Saipan, broadcasting to Asia and the Pacific, and in 1989 by WHSB in Cypress Creek, S.C., broadcasting to Latin America and Canada.
In the US, Monitor Radio broadcasts twice daily Monday through Friday, with one-hour programs in the morning and evening heard over more than 200 local public radio stations. It also offers a one-hour weekend program. In addition, five-minute newscasts are broadcast at the top of the hour and can be heard on another 29 stations. About 1.25 million listeners hear the programs weekly.
Monitor Radio International broadcasts a one-hour shortwave program Monday through Friday that is repeated hourly over various frequencies aimed at different parts of the world. During the weekend, five-minute newscasts are broadcast at the top of the hour. Estimates of listenership range from 9 million to 11 million people worldwide.