The network consisted of WXYZ: Detroit, WIBM: Jackson, WKZO: Kalamazoo, WJIM: Lansing, WBCM: Bay City, WFDF: Flint, WELL: Battle Creek and WASH-FM-WOOD: Grand Rapids.
However, the ABS network launch immediately proved to be a public relations disaster, and Amalgamated went out of business on October 28, 1933.
The Michigan Regional Network was the first to broadcast the Lone Ranger radio series produced by WXYZ, either beginning with, or shortly after its first episode on January 30, 1933.
(Sources differ as to when the other stations in the Network began broadcasting WXYZ's Lone Ranger program, some indicate that it was with the first episode while many others indicate an unspecified later date).
In September 1934, WOR, WGN, WLW, and WXYZ formalized their relationship with a contract, and the following month, the Mutual Broadcasting System was established.