The station went on the air for the first time on July 10,1930 as WIS.. On January 23,1930, WIS was the last U.S. broadcast station to be assigned a previously unused call sign with three letters instead of four.
The station went on the air for the first time on July 10,1930 as WIS.. WIS was the last U.S. broadcast station to be assigned a previously unused call sign with three letters instead of four WIS.. This was on January 23,1930.