WEDC, and its sister shared-time radio stations, WCRW and WSBC, are an important part of United States radio history. They operated as "shared time stations" for their entire existence; this was not uncommon in the early days of radio, but very rare in more modern times. They were also foreign language stations, catering to "niche markets". In October 1926, WEDC signed on and was operating at 1240 on the AM dial in Chicago; in the same year, the station began sharing the frequency with WCRW and WSBC.
Foreign-language broadcasters were always under government suspicion, especially during years when the US was at war, because of the possibility of "un-American", traitorous or "coded" information being broadcast. A nationwide council of owners of foreign language stations, including WEDC, was formed during World War II to uphold the good name of foreign-language radio stations and insure foreign propaganda was banned from being broadcast.
The Broadcasting Yearbook notes that WEDC operated 11 hours daily. The three stations on 1240 were each authorized 8 hours, but according to Ed Jacker, owner of WCRW, "no one listened overnight" so WCRW sold its 3 overnight hours to WEDC.