After shifting its previous format and call letters to 100.3, Journal Broadcasting has launched "Classic Hits 93.1" WNOX Karns/Knoxville, TN. Debuting at 9am today, the new format is focusing on pop hits from the late 1960's through early 1980's. The station fills the musical niche left open by the flip of 95.7 WQJK from Variety