KRRVsigned on the air on October 15, 1936 at 1310 AM (at 100 watts, then 250 watts,), moved to 880 AM in June 1940 (at 1,000 watts,), and finally settled at 910 AM by 1949. The call letters stood for "Red River Valley." During the 1950s, it played country music during the day and Top 40 at nights. The station shifted to full-time Top 40 by the 1960s and continued until October 1974, when KRRV shifted back to country.
The next year, in July 1975, the call letters were changed to KIKM, to match sister station, KIKM-FM. The station is owned by Albert W. Brown, who also operated McKinney's KAWB. reverted to an Adult Top 40 format until 1986, when country returned again briefly, then adult standards in 1988 as KBLN.
The KXEB call letters were assigned on March 16, 1990. For a number years following, the station went through several different formats.
KXEB debuted its current Catholic talk programming on October 1, 2006, ending its affiliation with Air America Radio. On January 23, 2007, the new owners changed the call sign from KXEB to KATH.