The station first signed on the air in 2000 as WMMF-TV, which carried programming from FamilyNet, under the ownership of Pappas Telecasting. It shared transmitter facilities with WWRS-TV (channel 52), north of Iron Ridge in Dodge County. WIWN is the second television station to be licensed to Fond du Lac. KFIZ-TV (channel 34), an independent station that was co-owned with KFIZ (1450 AM) and WFON (107.1 FM) and had operated from 1968 to 1972. The station changed its call letters to WWAZ in late 2004, in anticipation for a change in affiliation to the Spanish-language Azteca América network; however the station never did join Azteca and Pappas ended up dropping almost all of its affiliations with the network from its stations in July 2007 during a conflict with the network, replacing it with its own new Spanish-language service, TuVision. During TuVision's life, the network was never carried by WWAZ.