First station[]
- Date: ...April 22, 1927-October 10, 1977
- Frequency:
- 1375 kHz (...February 26, 1927-April 22, 1927)
- 1390 kHz (April 22, 1927-June 15, 1927)
- 1440 khz (June 15, 1927-March 1, 1928)
- 1410 khz (March 1, 1928-November 11, 1928)
- 1420 kHz (November 11, 1928-November 15, 1929)
- 1200 kHz (November 15, 1929-March 29, 1941)
- 1230 kHz (March 29, 1941-October 10, 1977)
- Location:
- Los Angeles, California (...April 22, 1927-October 10, 1977)
- Owner of license:
- Ben S. McGlashan (...June 30, 1927-June 30, 1928...)
- Subsequent call letters: KKTT
Second station[]
( NOTE: Actually same station as first, after two call letter changes)
- Date: October 15, 1979-May 1, 1996
- Previous call letters: KKTT
- Frequency:
- 1230 kHz (October 15, 1979-May 1, 1996)
- Location:
- Los Angeles, California (October 15, 1979-May 1, 1996)
- Subsequent call letters: KYPA