KTMS was founded by Santa Barbara News-Press publisher Thomas More Storke (hence the station callsign). KTMS was located for many years at 1250AM (now KZER). Among the programs produced at the station include 1-2-5 Club, with disc jockey Bob Ruth. It debuted in 1947 and aired for many years. The call letters moved to 990 AM, formerly KTYD and many other call letters, in 1998 after 1250 was sold to the owners of the local ABC affiliate KEYT-TV and became KEYT. In the 1960s, 990 AM was called "KGUD" (K-Good Radio) and sported a country music format. It began simulcasting KTYD's AOR format in the early 1970s, but briefly returned to a country format in the 1980s. After that a number of formats (among them religion, Broadway show tunes and jazz) were tried but none were successful.