December 1926: the station signs on as KMAC. It broadcasts at 100 watts on 1370 kilocycles, sharing time with KONO.[4]
1941: With the enactment of NARBA, KMAC moves to 1240, powered at 250 watts.[5]
1948: KMAC moves to 630 kHz, powered at 5,000 watts and carrying programming from the Mutual Broadcasting System.[6]
1975: Salem Communications purchases KMFM on FM 96.1 and Mel Taylor is hired as GM.
1977: John Walk is hired as KMFM's Program Director and hosts daily music show.
1982: KMFM changes call sign to KSLR-FM and becomes known as SonLight Radio. Car window stickers displaying the new call letters are given away throughout San Antonio.
1983: Salem Radio purchases KMAC – Mel Tailor GM, John Walk Program Director. Salem sells the KSLR-FM, with those call letters moving to AM. KMAC's call sign changes to KSLR. Roy Butler hired for music shift.
1988: Salem sold KSLR to Communicom Corporation of America based in Denver. Bob Lepine GM, Mary Dockery GSM, John Walk Operations Mgr.
September 1990: Dave Gordon is hired as Program Director.
July 1992: Bob Lepine resigns and joins Family Life Today with Dennis Rainey. Carl Dean is hired as GM, John Walk debuts as host of "Crosscurrents," a daily one-hour talk show.
1993: Mary Dockery resigns as GSM.
August 1994: Salem re-acquires KSLR, Carl Dean stays with Communicom of America. John Walk promoted to interim GM.
January 1995: John Walk resigns after 18 years with KSLR. Jeff Crabtree becomes new GM.
July 1997: Jeff Crabtree resigns, Dave Gordon promoted to interim GM. Adam Macmanus talk show debuts on KSLR.
February 1998: Mary Dockery is hired as GSM.
July 1998: Dave Gordon resigns as GM, Mary Dockery is promoted to GM.
1999: Pat Rogers is hired.
February 2000: Dave Gordon is hired as OM.
September 2000: Salem acquires 930 KLUP, Pat Rogers assigned to morning show.
January 2002: Sonny Melendrez is hired for KLUP.
February 2002: Mary Dockery resigns, Dave Gordon is promoted to GM.
July 2002: Pat Rodgers resigns, Sonny Melendrez hosts KLUP morning show
2002: Baron Wiley is promoted to Operations Manager/Program Director
September 4, 2004: KLUP The Loop flips to News Talk 930 KLUP.